OPERATOR'S MANUAL

FORD"
F-SERIES
TRUCKS

FORD DIVISION
FORD MOTOR COMPANY

Car Manuals Direct

 OPERATOR'S
MANUAL
FORD
"dJ." St!!/Ue4
TRUCKS
Copyright 1952
FORD MOTOR COMPANY
Dearborn, Michigan
All rights reserved

FORD DIVISION
FORD MOTOR COMPANY
SERVICE DEPARTMENT
3651.52 January I, 1952

Car Manuals Direct

 FOREWORD
The Ford Motor Company has exercised every care in the
designing, .election 01 material., and the building 01 this
vehicle, and you may expect it to lIerve you economically for
many thousands 01 miles. Maintenance 01 the vehicle in gootl
working order depends on the skiH 01 the driver in its opera-
tion., and the prompt application 01 corrective measures as
soon as the need for adjustments and lIervi.ce is apparent.
The information presented here as indicqted in the Table
01 Con tell" is divided int.o Six Chapters as follOws:
Chapter I contains information and instructions ' that will
be 01 assistance in the opert/tion 01 the vehicle. In this Chapter
you will find the shift pattern for each 01 the various types 01
tran¥missiolls that are used on Ford trucks.
Chapter II contains lubrication and inspec';o,. instructions.
Discuu and plan a maintenance schedule with your Ford
Dealer.
Chapter III contains detailed instructions for nlakillg the
various adjustments that will be required from time to time.
Chapter IV containll information pertaining to care 01 tires
as well asinstrucrions for changing tires.
Chapter V contain. various trouble shooting procedures that
,,,illprove 01 aSllistance should trouble occur ."hen professional
aid i. not available. Authorized Ford dealers are prepared alld
equipped to take care 01 any 01 these services.
Chapter VI contain. specifications 01 the entire vehicle and.
its components.

FORD DiVISION
FORD MOTOR COMPANY
SERVICE DEPARTMENT

Car Manuals Direct

 TABLE OF CONTENTS
Chapter I
Controls and _Operation
Section Page
1. Truck Identification . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 6
2. Break-in Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3. Driver's Controls.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 9
4.. Instruments and Gauges . . . . . . . . . . . . . . . . . . . . . . . .. 12
3$. · Switches, Keys, and Miscellany ... . . . .. . . . . ... . ... 15
;6} Starting the Engine. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
f Driving :Hints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . 19
.!l. Operl,ltion Under Unusual Conditions . . . . . . . . . . . . .. 23
Chapter II
Lubrication aud Inspection
'-. Engine Oil. .... . ....... .. . . . ~ . . . . . . . . . . . . . . . . . ..
1. 26
:-2• . 1000-Mile Lubrication and Inspection ... . ... ... .... 28
3. i §000-Mile Lubrication and Inspection . . . . . . . . . . . . •. 34
4. 'to,OOO-Mile Lubrication and Inspection. . . . . . . . . . . . 37
5. Special Instructions for Power Brakes ... . ..... . . . 39
Chapter III
Adjustments
1. Ignition System ... .. .. ' . . . . . . . .. .. . . .. . .. . ... . .. 44
~ :Carburetor Adjustment ...... ' . . . . . . . . . . . . . . . . . . . 46
_:f: 'clutch Adjustment .. . . .. . , . . . . . . . . . . . . . . . . . . . . .. 50
4. Hydra\llic Brake Adjustment ... . . . ; . .. . ,. . .... . . . .. 51
5. Air Bntke Adjustment .. . . ...... . . .. .. . . . . .. . ... _ 52
6. . Parking Brake Adjustment :... . . . . . . . . . . . . . .. 53
7. Steering AdjustlJlent and Wheel Alignment . . 55

Car Manuals Direct

 TABLE OF CONTENTS (Cont.)
Section Page
8. Headlight Alignment. . . . . . ....... .. 58
9. Fan and Generator Belt Adjustment . . . .... . ... ... 61
Chapter IV
Wheels and Tires
1. Tires . ...... . ................ ,. 64
2. Drop-Center Wheel Tire Replacement
(F-landF-2)...... ...... . .... .... .. 66
3. Semi-Drop Center Wheel Tire Replacement
(F-3 Parcel Delivery) ................. . 67
4. Two-Piece Rim Tire Replacement
(F -3 Through F -6, and F -7 Disc Wheel) . 70
5. Three-Piece Rim Tire Replacement (F-7 and F-B) . 73
·€Jtapter V
Trouble Shooting
1. Engine . .... ....................... 76
2. Generating System. . ........ 80
3. Cooling System. 80
Chapter VI
Specifications
1. Rear Axle Types, Ratios, and Tread . 83
2. Transmission Types and Ratios ........ .. . .. :~ 84
,3. Load Capacity and Tire Pressures .. . 85
4. Wheel Alignment .... ,. . . . . . . . . . . . . . . ..... . 86
5. Engine, Ignition, Fuel System, and Cooling System 87
6. Electrical (Except Ignition) . ... (>·"'/'F . 90
7. Brakes . . .. , .. . . ... ;. ,,:•. 91
B. Capacities. . . ....... . . 93
9,. General Specifications. 94

Car Manuals Direct

 3351

Fig. l-Three-Quarter Front View of Conventional Truck.

Fig~ 2-Cab-Over-Engine Truck.

Car Manuals Direct

 Chapter
'I
CONTROLS AND OPERATION
Section Page
1. Truck Identification . . . . . . . . . . . . . . . . . . .. 6
2. Break-In Precautions . . . . . . . . . . . . . . . . . .. .7
3. Driver's Controls ...................... 9
4. Instruments and Gauges ................ 12
5. Switches, Keys, and Miscellany ........... 15
6. Starting the Engine ....... : .......... ,. 17
7. Driving Hints . . . . . . . . . . . . . . . . . . . . . . . .. 19
8. Operations Under Unusual Conditions. . . . .. 23
This chapter is designed to acquaint you with the
things you should know to secure the utmost in economy
and satisfaction from your new truck. We hope you will
take the few minutes required to read it.

1. TRUCK IDENTIFICATION.
Your identification of the truck is by the series number
which appears on all trucks except the parcel delivery.
This number is located on the side of the hood. Each
truck is also provided with a serial number. The number
is located in three places, the patent plate in the engine
compartment,the rating plate on the dispatch com part-

Car Manuals
6 Direct
 Section 2-Sreak.-in Precautions 7

ment door, and on the top of the right frame side rail
above the front axle.
On the parcel delivery the rating plate is located on
the right-hand side of the dash.

2. BREAK·IN PRECAUTIONS.
Every Ford truck is thoroughly inspected before de-
livery. However, proper care of your new truck during
the first 2000 miles is generally the basis of trouble free
operation during the life of the truck.
a. Break·In Speeds. Avoid continuous high speeds
for the first 500 miles. Do not exceed 40 miles per hour
for the first 500 miles. In lower transmission speed ranges,
the road speed should be correspondingly less.
b. Cooling System. During the break-in period, a close
check of the cooling system is important. Operating tem-
peratures should be watched and proper coolant and rust
inhibitors should be used.
c. Lubrication. Particular attention should be given
to the lubrication of the truck during the first 2000 miles.
Follow the recommendations outlined in the Lubrication
section.
d. Engine Oil. After the first 300 miles of operation,
the engine oil should be changed. Use the correct oil
viscosity for the prevailing temperature as described in
the Lubrication section.
e. Fuel. The ignition timing on a new truck is adjusted

Car Manuals Direct

8 Chapter I-Controls and Operation

to obtain the best performance with the grade of fuel used

by the manufacturer. During the break-in period, observe
the performance of the engine to determine the necessity
of readjusting the distributor manual advance to suit the
grade of fuel used.
NOTE: On F-7 and F-8 trucks, be sure the governor
throttle stop has been removed from the governor. The
throttle stop is located under the governor cover plate
(fig. 3). Replace the mounting screw after removing the
governor stop.

THROTTLE STOP

3349
Fig. 3-Throttle Stop Removal.

f. Wheel Nuts. Special attention should be given to

the tightening of the wheel nuts on a new , truck, to the
proper torque. This is particularly important on trucks
using the cast-type wheel.
g. Spring "U" Bolts. During the break-in period the
Car Manuals Direct
 Sed ion 3-Driver's Controls 9

ADJUSTMENT LEVER
CONVENTIONAL C.O.E. SEAT
SEAT .4 930 4295
Fig. 4-Seat Adjustment, Fig. 5-Seat Adjustment,
Conventional Trud(. C.O.E. Truck.

springs will settle slightly. It is important that the spring

"U" bolts are tightened to the specified torque as listed
in the Specification section. The spring "u" bolts should
be tightened with the truck loaded.
3. DRIVER'S CONTROLS.
Your safety, convenience, and comfort were the prime
considerations in determining the design, location, and
type of controls in your new truck. The use of the various
controls aI)d their location are described in this section.
a. Seat Adjustment. The driver's seat is adjustable to
provide a comfortable position for the driver. Conven-
tional truck seats are equipped with two adjustments
.
Car Manuals Direct
10 Chapter I-Controls and Operation

(fig. 4). The lever at the left-hand front corner is used

for positioning the seat "fore" or "aft:' For tilting the
seat back to the position desired, an adjusting screw is
provided.
The cab-over-engine driver's seat is adjusted for resili-
ency by turning the adjustment screw knob on the front
of the seat (fig. 5). The parcel delivery and panel delivery
truck I!jeats are adjustable only "fore" or "aft:'
h. Service Brake Pedal. To apply the brakes, depress
the brake pedal (fig. 6). '
c. Parking Brake Lever. On F-l series trucks, the
parking brake lever is mounted on the left-hand side of
the steering column below the instrument panel. On all
other F-series trucks the lever is located to the right of
the gearshift lever. Pulling the lever back applies the
parking brake. Always re-
lease the parking brake
before attempting to move
the truck.
d. Clutch Pedal. When
the clutch pedal is de-
pressed (fig. 6), the clutch
is released and the engine is
disengaged from the trans-
FOOT ACCElERATOR
mission. Avoid driving with HEADLIGHT BEAM
your foot resting on the CONTROL SWITCH OM-590
clutch pedal,..otherwise pre- Fig. 6-Foot Controls.

Car Manuals Direct

 Section 3-Driver's Controls II

mature wear of the clutch

may result.
e. Accelerator Pedal.
The accelerator pedal (fig.
6) is connected to the car-
buretor throttle shaft by
linkage, and is used to open
and close the carburetor
throttle plate;
4928
f. Gearshift Lever. The
Fig. 7-2-Speed Axle gearshift lever is used to
Shift Control. shift the transmission .gears
to the desired gear ratios. Always be sure the gearshift
lever is in the neutral position before starting the engine.
g. 2.Speed Axle Shift Control. Trucks equipped with
a 2-speed axle have a shift control button located on the
instrument panel (fig. 7). This button operates a valve
which shifts the rear axle 'gears by vacuum. The axle is
in low ratio when the button is pushed in, and in high
ratio when the button is pulled out. Always shift the axle
to the low 'ratio before parking the truck.
NOTE: On F-7 and F-8 trucks the 2-speed axle is elec-
trically operated. The control button is clamped to the
gearshift lever. The axle is in low when the button is
pushed down, and in high when the buttonis pulled up.
h. Windshield Wiper. To operate the windshield
•
Car Manuals Direct
12 Chapter I-Controls and Operation

wiper (fig. 9), rotate the

wiper control knob clock-
wise. The speed of the wind-
shield wiper is controlled
by the degree the control
knob is turned.
i. Hood Lock. To open
the hood, pull out the
handle until the hood is
HOOD LOCK HANDLE 3353 raised sufficiently to expose
Fig. 8-Hood Lock. the auxiliary catch (fig. 8).
Pull on the lower end of the
auxiliary catch, then raise the hood.
4. INSTRUMENTS AND GAUGES.
The various instruments and gauges provided are all
located where they can be seen quickly without taking
your eyes from the road for more than an instant. Form
the habit of observing the instruments frequently to
check the performance of your truck during operation.
The location of the various instruments and gauges is
shown in (fig. 9).
a. Charge Indicator. The charge indicator indicates
whether the battery is being charged (C) or discharged
(D). The voltage and current are limited by the generator
regulator to protect the circuit. The strength of the
current below this maximum will vary with the electrical
load and the ,.condition of the battery. When the voltage

Car Manuals Direct

 ~
!l.
g'
.c:.
-..
I
;:,
!!l.
c:
3
CD
;:,
c;;-
Q
;:,
Q.
Gl
Q
c:
(Q
CD
III

COWL VENTIlATOR CONTROl HANDLE

Fig. 9-/nstrument Panel. .....

~

Car Manuals Direct

14 Chapter I-Controls and Operation

of the battery reaches a predetermined value, the indi-

cator pointer should indicate a lower charging rate. The
indicator pointer may fluctuate slightly at this point due
to the action of the generator regulator.
h. Fuel Gauge. The fuel gauge is an elecrically oper-
ated gauge of the delayed action type, and is actuate<:t
by a float in the fuel tank. The ignition switch must be
turned to the "ON" or "ACCESSORY" position before
the gauge will register.
c. Engine Temperature Gauge. The engine temper-
ature gauge is of the electrical type and registers the
water temperature in the cooling system. The gauge
registers when the ignition switch is turned to "ON" or
"ACCESSORY" position. When the ignition is turned off ,
the indicator hand will rest at the "H" hot end of the gauge.
NOTE: The radiator cap is of the pressure type. When
you remove the cap, turn it slowly to the first notch to
allow the vapor pressure to escape. After the pressure has
been released, remove the cap.
el. Oil Pressure Gauge. The oil pressure gauge is of
the electrical type, and indicates the oil pressure to the
engine bearings. ·Normal oil pressure is approximately
50 pounds (approximately 42 pounds on F-7 and F-8)
with a truck speed of 45 miles per hour in high gear or
with the engine running at 2000 revolutions per minute
at normal operating temper~ture. The oil pressure gauge
does not indic<!te the quantity of oil in the engine oil pan.

Car Manuals Direct

 \
Section 5-Switches, Keys, and Miscellany 15

If at any ti~e the gauge fails to show pressure, stop the

engine immediately and investigate the cause of the
trouble.
e. Oil Level Gauge. The oil level gauge (dip stick) is
located on the left side of the engine (right side F-7 and
F-8), and is accessible from under the hood on the con-
ventional truck and through the floor plate in the cab on
C.O.E. trucks.
On the parcel delivery truck, the oil level gauge is
accessible after the engine cover has been removed.
f. Speedometer. The speedometer indicates the speed
at which the truck is traveling. The mileage covered is
recorded by an odometer incorporated in the speedometer.
g. Air Pressure Gauge. On trucks equipped with air
brakes, the air pressure gauge is mounted to the left of
the steering column on the upper part of the instrument
panel. This gauge indicates the air pressure in the air
brake system.
WARNING: Do not attempt to move trucks th'at are
equipped with air brakes until at least 60 pounds of air
pressure is registered on the air pressure gauge.
5. SWITCHES, KEYS, AND MISCELLANY.
In addition to the instruments and controls described
on the preceding pages, you should be familiar with the
following items:
a. Headlight Switch. The headlight switch · has three
positions. When the knob is pulled out to the first posi-
Car Manuals Direct
 16 Chapter I-,-Contro/s and Operation

tion, the parking lights and taillight are turned on. When
the knob is pulled out to the second position, the parking
lights are turned off, and the headlights and taillight are
turned on. When the switch knob is pushed in to the stop,
all lights are turned off.
h. Headlight Beam Control Switch. The headlight
beam control switch is located on the floorboard to the
left of the clutch pedal (see fig. 6). After the headlights
have been turned on, the switch is operated to change to
either the country (upper) or the traffic (lower) beam
of the headlights. The upper beam is used for country
driving where maximum illumination is desired. The
lower beam is used when approaching oncoming cars or
~:, when driving in the city. A l)eadlight beam indicator is
":/ " - .
1'0Fated on the speedometer face. This indicator is a small
red jewel which glows when the headlig~ts are switched
to the upper beam.
c. Instrument Panel Light Switch. The i ristrument
panel light switch is integral with the headlight switch.
The intensity of the light is controlled by turning the
headlight switch knob. The instrument panel lights can
be controlled only after the headlight switch is in one of
the two "ON': positions.
d. Ignition Switch. The ignition switch is provided
with three positions. When the key is in the switch in the
vertical position, the ignition circuit is turned off. With
the key turned to the right-hand position, the ignition,
..
Car Manuals Direct
 Section 6-Starting the Engine 17

accessory, and gauge circuits are completed. When .the

key is turned to the left-hand position, the accessory and
gauge circuits are complete, but the ignition is off.
e. Starter Button. When the starter button is pressed,
it completes the circuit to the starting motor relay caus-
ing the starting motor to cr~nk the engine.
f. Keys. Duplicate keys are supplied for the locks. The
same key that is used to lock the door operates the igni-
tion switch. A key code number is stamped on a metal
tag attached to the keys. Keep a record of the code num-
ber so that in case of los·8, new keys can be ordered by
code number.
g. Choke Control. The choke control button is
connected to the carburetor choke plate by a cable. An
explanation of its use is given under "Starting the Engine."
h. Hand Throttle. The hand throttle. is connected to
the carburetor throttle shaft by linkage and is used to
set the engine at any given engine speed.
6. STARTING THE ENGINE.
Before you start the engine, make sure that the function
of each control and the significance of the readings of
tlfEl ,iartous . instruments are thoroughly understood. Be
sure the gearshift lever is in neutral position.
a. Warm Weather Starting (Temperature Above
Freezing). Thrn the ignition switch on. Hold the clutch
ped~l down, and press the starter button. If the engine

Car Manuals Direct

18 Chapter I-Controls and Operation

does not start promptly,

pull the choke button part-
way out. This will give a
richer fuel mixture.
NOTE: If the engine is hot
or flooded with fuel and
H 1 3

3-SPEED SYNCHRO·SILENT

~
does not start promptly,
hold the foot throttle all 2 N 4 R
the way down while the
engine is being cranked. 4·SPEED SPUR GEAR
Do not use the choke.
h. Cold Weather Start·
ing (Temperature Below
Freezing). Thrn the igni~
tion switch on. Pull the
W 2 4

4·SPEED SYNCHRO·SILENT

~
choke button all the way
out to increase the fuel mix-
ture. Hold the clutch pedal
3 4 1
down, and press the starter
button. As the engine starts, 5.SPEED OVERDRIVE

push the choke button in

~
gradually, as far as possible,
without disturbing the
3 5 1
smooth running of the en-
gine. As soon as the engine 5·SPEED DIRECT 5TH
is warmed up, push the 4904
choke button ~ll the way in. Fig. 10-Shift Patterns.

Car Manuals Direct

 Section 7-Driving HiiJts 19

A void racing the engine before it reaches normal oper-

ating temperature.
7. DRIVING HINTS.
Successful and economical operation of the truck de-
pends largely upon the skill of the driver. This section
gives the essential driving principles and illustrates the
different transmission shift patterns (fig. 10).
a. Setting the Truck in Motion. Ford trucks are
equipped with several different types of transmissions
with different shift patterns. First study the shift pattern
for your particular transmission, see fig. 10. The type of
transmission used in your truck is listed in the Specifica-
tion section.
If the truck is equipped with a 4 or 5 speed spur gear
transmission it is advisable to double clutch when shift-
ing gears to avoid gear clash. However, if the truck is
equipped with a 4-speed synchronized transmission, it
is not necessary to double clutch.
The first gear on 4 or 5 speed transmissions need not
be used unless starting the truck up steep inclines or on
hard pulls.
Start the engine. If equipped with air brakes, do not
attempt to move the truck until at least · 60 pounds of
air pressure is registered on the air pressure gauge.
Release the hand brake lever. Fully depress the clutch
pedal, and move the gearshift lever into the first gear
position. Depress the accelerator pedal to slightly in-

Car Manuals Direct

20 Chapter I-Controls and Operation

crease the engine speed, and at the same time gradually

start to release the clutch pedal. As the truck starts to
move, increase the pressure on the accelerator pedal and
release the clutch fully, so that the engine will pick
up the load. After the truck is moving approximately
10 miles per hour, depress the clutch pedal, and at the
same time release the pressure on the accelerator pedal.
Move the gearshift lever out of the first gear position
into neutral.
If double clutching is used, release then depress the
clutch pedal as quickly as possible before completing
the shift to the next gear.
Complete the shift to second gear position. After this
shift is completed, release the clutch without any hesi-
tancy, and at the same time accelerate the engine to pick
up the load. After the truck has attained a speed between
10 to 20 miles per hour, repeat the clutch and accelerator
operation (double clutching if necessary), and shift the
transmission into third or high gear position.
h. Stopping the Truck. Avoid sudden stops except in
cases of emergency. When preparing to stop, remove
your foot from the accelerator pedal. Except in emer-
gency stops, this should be done at some distance before
reaching the point where you are planning to stop the
truck so that the compression of the engine will be
utilized to slow down the truck.
(1) HYDRAULIC BRAKES. Apply the brakes by
pressing dow%! on the brake pedal. When the speed has
Car Manuals Direct
 \
Section 7-Driving Hints 21

been Teduced to approximately 7 miles per hour, depress

the clutch, and move the transmission gearshift lever
into the neutral position, maintaining pressure on the
brake pedal until the truck stops. Apply the parking
brake if the truck is to be parked.
(2) AIR BRAKES. When stopping a truck equipped
with air brakes, remove your foot from the accelerator
pedal. Except in emergency stops, apply the brake pedal
hard at first and then gradually decrease the pressure
on the pedal as the speed of the truck decreases to make
a smooth stop. The brake pedal should not be applied
lightly at the start and then hard, as the truck speed is
decreased, as this will result in a rough stop. Do not
fan the pedal (apply and release), this merely wastes the
compressed air.
c. Shifting the Two-Speed Axle. Start the truck in
the usual manner, making sure the rear axle shift control
button is pushed in (down on F-7, F-8) to the low ratio
position. When desiring to shift to the high speed ratio,
keep the accelerator pedal down, and pull out (up on
F-7, F-8) on the shift control button. Drive with the
accelerator pedal down until you desire to complete the
shift. To complete the shift, release the accelerator pedal,
and at the same time disengage and engage the clutch.
When approaching a hill and it becomes necessary to
shift to the low ratio, push the shift control button in,
.
(down on F-7, F-8), keeping the accelerator pedal down.
Car Manuals Direct
22 Chapter I-Controls and Operation

Drive with the accelerator pedal down until you desire

to complete the shift. To complete the shift continue to
hold the accelerator pedal down, then disengage and
engage the clutch as quickly as possible.
(1) SPLIT SHIFTING. When shifting the trans-
mission to the next higher gear and at the same time
shifting the rear axle to a lower gear, shift the transmis-
sion in the usual way, and just before releasing the clutch
pedal, push the rear axle control button in (down on
F-7, F-8). When shifting the transmission to the next
lower gear and at the same time shifting the rear axle to
the high gear, pull out (up on F-7, F-8) on the rear axle
control button, release the accelerator pedal, and shift
the transmission in the usual way.
(2) HEAVY LOAD, UP INCLINE, OR NON-
HIGHWAY. If the truck is equipped with a two-speed
axle, make sure it is in low ratio. Depress the clutch
pedal and move the gearshift lever into the first gear
position. Accelerate the engine slightly, and as the engine
speed increases, release the clutch pedal. As the truck
starts to move, increase the pressure on the accelerator
so that the engine will pick up the load.
d. Good Driving Practices. Never lug the engine at
wide open throttle. Always shift the transmission to a
lower gear before the engine begins to labor. To shift the
transmission to the next lower gear or "down shift;' de-
press the clutch pedal, and move the shift lever to the
.
Car Manuals Direct
 Section 8-0peration Under Unusual Conditions 23

neutral position. Release the clutch and accelerate the

engine to synchronize the transmission gears, again de-
press the clutch .pedal, accelerate the engine and move
the gearshift lever to the next lower gear position and
re~ase the clutch. Repeat this operation each time when
down shifting to lower gears.
NOTE: Do not force gears, instead, accelerate the engine
to synchronize the gears, and again t,ry to shift the gears.
(1) USE OF GAUGES. You should be familiar
with all the gauges, and should note their readings fre-
quently while operating the truck. The temperature gauge
and the oil pressure gauge give the most satisfactory in-
dications of the engine's performance. When the readings
of these instruments appear to be abnormal, stop the
engine and determine the cause. Check the 6il pressure
and the water temperature gauge readings frequently.
(2) BACKING THE TRUCK. To avoid possible
damage . to the transmission gears, the truck must be
brought to a complete stop before shifting into reverse
gear. Refer to the shift pattern illustrations (fig. 10) for
references to the correct position for the transmission
being used. With the clutch pedal depressed, move the '
gearshift lever in reverse position, and slowly release the
clutch pedal, at the same time accelerate the engine to
pick up the load smoothly.
8. OPERATION UNDER UNUSUAL CONDITIONS.
The following paragraphs contain information for the
Car Manuals Direct
24 Chapter I-Controls and Operation

operation of trucks in different seasons and altitudes.

a. Operation in Cold Weather. Cold weather usually
presents problems that are not experienced during warm
weather. However, these problems can be prevented if
the proper precautions are taken prior to am~ during cold
weather operations.
(1) ENGINE OIL. When temperatures of 10° F.
below zero or lower prevail, you should use SAE SW in
the engine.
(2) ANTIFREEZE SOLUTION. At the approach
of freezing weather, an antifreeze cooling solution should
be used. Ford antifreeze may be obtained from Ford
dealers. Ethylene Glycol, radiator glycerine, or alcohols
containing proper rust inhibitors are also satisfactory
antifreeze solutions.
(3) DRAINING COOLING SYSTEM. A drain
cock is provided on the lower front of the radiator, and
is accessible from the front of all trucks excepting
the cab-over-engine, which is accessible from under the
radiator. For draining the coolant trapped in the engine,
a pet cock is provided on the left side of the 6-cylinder
engine block and on both sides of the 279 and 317 cubic
inch V-8 engine blocks.
When the cooling system is refilled · with fresh water
after draining (when antifreeze is not being used), it is
important that a rust inhibitor be added. This inhibitor

..
can be obtained from Ford dealers.
Car Manuals Direct
 \
Section 8-0peration Under Unusual Conditions 25

h. Operation at High Temperature. When you are

operating your truck in high temperatures, observe the
water temperature gauge frequently. Add water to the
cooling system as often as required to prevent overheat-
ing. The viscosity of the various oils used decreases at
higher temperatures, see Lubrication section. Engine oil
thinned by high . temperature is used up more rapidly.
Check the engine oil level frequently.
c. Operation at High Altitndes. High altitudes result
in the lowering of compression due to lowered atmos-
pheric pressure and a corresponding lowering of the
developed horsepower. Due to the rarefied atmosphere,
a smaller quantity of air is taken into each cylinder
while the quantity of fuel remains practically the same
as at sea level. This results in the fuel air mixture being
too rich. This can be remedied by installing smaller car-
buretor jets if the truck is to be operated continually at
high altitudes. If operational trouble is encountered at
high altitude, consult your Ford dealer.
d. Operation Under Dusty Conditions. When driving
the truck over dusty roads, the crankcase breather screen
in the oil filler cap and the carburetor air cleaner should
be frequently cleaned.
The F-7 and F-8 trucks have a filter in the road draft
tube which should also be cleaned (see Lubrication sec-
tion). Change the engine oil and oil filter cartridge as
often as necessary to keep the oil free from dust.
Car Manuals Direct
 Chapter
II
LUBRICATION AND INSPECTION
Section Page
1. Engine Oil ........................... 26
2. 1000-M\le Lubrication and Inspection ...... 28
3. 5000-Mile Lubrication and Inspection. . . . .. 34
4. 10,000-Mile Lubrication and Inspection. . .. 37
5. Special Instructions for Power Brakes. . . . .. 39
The service that you obtain from your new truck
throughout the years will be controlled by the care exer-
cised in its operation and by the periodic attention to
lubrication and inspection.
Your Ford dealer, or any Ford dealer, has both trained
personnel and the equipment necessary for the handling
of these operations. Whether these services are performed
by a Ford dealer, by yourself, or by someone else, the
important thing is that your truck receives this regular
care.
L ENGINE OIL.
On new trucks or after engine overhaul, the engine oil
should be changed after the first 300 miles. Drain the
oil from the engine by removing the crankcase drain plug.

26
Car Manuals Direct
 \

Section r-Engine Oi' 27

Reinstall the plug, and fill the crankcase to the specified

level with oil of the proper viscosity. See the capacity
chart in the Specifications section.
a. Subsequent Oil Changes. Drain and refill the en-
gine crankcase every 2000 miles, or not less than four
times each year, or at . any time when the' oil becomes
excessively diluted or dirty.
Use the specified engine oil as listed below:
SAE30 oil fortemperatures above + 32°F.
SAE 20 or 20W oil for temperatures above + lOoF.
SAE lOW oil for temperatures above - lOoF.
SAE SW for temperatures below - lOoF.
Each time the oil is changed, remove the oil bath air
cleaner and clean the sump, refilling it to the level mark
with the same grade of engine oil used in the engine.
Occasionally wash the filter element in cleaning fluid.
If the truck is operating under severe dusty condi-
tions, the air cleaner should be checked daily and cleaned
if necessary.
It is advisable to use the accumulated mileage indi-
cated on the speedometer as a guide for oil changes.
Replace the oil filter cartridge every 4000 miles. Add
1 quart of oil to the crankcase for filter absorption.
b. Type of Oil to Use. In commercial service the
crankcase oil is frequently subjected to higher tempera-
tures than in passenger car service, consequently it is
more subject to deterioration. Varnish on the pistons,
Car Manuals Direct
28 Chapter II-Lubrication and Inspection

valve stems, and tappets cause sluggish operation of the

engine. Sludge may eventually clog the oil pump screen,
oil passages, and the oil control rings.
REGULAR or straight mineral motor oil is satisfactory
for use in average light commercial vehicle engines under
normal driving conditions.
PREMIUM motor oil can be used in commercial
service where operating conditions are normal or average,
and thus ensure satisfactory operation if occasional heavy
duty service is requited.
While premium oil will give satisfactory results under
most conditions, HEAVY DUTY oil, which is recom-
mended for use in heavy duty truck operations, will give
equally satisfactory results in all types of service. The
heavy duty motor oils contain detergent compounds and
tend to hold in suspension the foreign contaminants which
normally would deposit on the engine parts.

2. lOOO-Mile LUBRICATION AND INSPECTION.

The clutch release bearing, clutch pilot bearing, water
pumps, fans (except F-l through F-6 8-cylinder engines),
and starting motor bearings are pre-lubricated and re-
quire no lubrication service.
a. Water Pumps. Inspect the water pumps for leak-
age. Check the belt for correct adjustment, and adjust
the belt deflection if required.
h. Accelerator Cross Shaft. Lubricate the accelerator
Car Manuals Direct
 \

Section 2-JOOO-Mile Lubrication and Inspection 29

Fig. J -Accelerator
Cross Shaft. Fig. 2-Breather Cap.

cross shaft (fig. 1) with DRIPLESS PENETRATING

OIL.
c. Breather Cap. Wash the breather cap screen (fig. 2)
with cleaning fluid, allow to dry, and wet with *ENGINE
OIL. Check daily under
severe dust conditions, and
perform the cleaning oper-
ation if necessary.
d. Steering Gear Case.
Add SAE 90 GEAR OIL
to the steering gear case
(fig. 3) as required. Before
removing the filler plug,
clean all dirt from around OM-557
the 'plug. Fig. 3-Steering Gear.
*Same grade as used in engine.
Car Manuals Direct
30 Chapter II-Lubrication and Inspection

4905
Fig. 4-Hood Hinges. Fig. 5-Spring Shackles.

e. Hood Hinges and Latch. Lubricate the hood hinges

and latch operating linkage with ENGINE OIL (fig. 4).
f. Spring Pins and Shackle Pins. Lubricate the spring
pins and shackle pins (fig.
5) with PRESSURE GUN
GREASE. Make sure the
grease is forced out each
end of the spring bushing
and shackle.
g. Spindle Bolts. Lubri-
cate the spindle bolts (fig.
6) with PRESSURE GUN
GREASE. Make sure the
grease is forced out around
the spindle. Fig. 6-Spindle Bolt.
Car Manuals Direct
 Section 2-l000-Mile lubrication and Inspection 31

OM-566
Fig. 7-Drag link and Fig. 8-Clutch Release
Tie Rods. Equalizer Shaft.

h. Spindle Connecting Rods. Lubricate the spindle

connecting rods with PRESSURE GUN GREASE.
i. Drag !.ink. Lubricate the drag link with PRES-
SURE GUN GREASE (fig. 7).
j. C I u t c hR e 1 e a s e
Equalizer Shaft. Lubricate
the clutch release equalizer
shaft with PRESSURE
GUN GREASE (fig. 8).
k. Clutch aud Brake
Pedal Shaft. Lubricate the
clutch and brake pedal
shaft with PRESSURE
GUN GREASE (fig. 9). OM-562
Check the clutch pedal for Fig. 9-Clutch and
free. travel. Adjust the Brake Pedal Shaft.

Car Manuals Direct

32 Chapter II-Lubrication and Inspection

OM-573

Fig. IO-Universal Joints. Fig. I I-Coupling Shaft

Support Bearing.

pedal free travel if necessary.

l. Universal Joints and Slip Joint. Lubricate the uni-
versal joints with SAE 140 GEAR OIL. Lubricate the
slip joint with PRESSURE GUN GREASE (fig. 10).
m. Coupling Shaft Sup-
port Bearing (All F Series
Except F-I 110 inch
C.O.E. and 104 inch Par-
cel Delivery). Lubricate
coupling shaft support
bearings and slip joint with
PRESSURE GUN
GREASE (fig. 11).
n. Transmission. Check Fig. 12-Transmission .
•
Car Manuals Direct
 Section 2-JOOO-Mi'e Lubrication and Inspection 33

transmission oil level and add GEAR OIL to level of filler

plug if required (fig. 12). Use SAE-140 in summer (SAE-
90 if equipped with remote shift) and SAE-80 in winter.
Inspect the transmission for oil leaks at the oil.seal. Re-
place the oil seal if it is leaking.
o. Rear Axle. Check the lubricant and add lubricant
to level of filler plug if required (fig. 13).
(1) F-l , F-6, F-7, F-8, AND F-S (WITH TWO
SPEED). In summer, use hypoid or multi-purpose lubri-
cant SAE-90 (SAE-140 for temperatures above lOO °F).
In winter, use hypoid or multi-purpose lubricant SAE-90
(SAE-80 for temperatures below -lOOF).
(2) F-2, P-3, F-4, AND F-S (WITH SING~E
SPEED). In summer use
mild E.P. or multi-purpose
lubricant SAE-140. In win-
ter, use mild E .P. or multi-
purpose lubricant SAE-90
(SAE.-80 for temperatures
below -lO oF.).
p. Springs. Spray the
springs with DRIPLESS
PENETRATING OIL
(fig. 14).
~ Linkage. Spray
clutch linkage, parking
brake cables, and equal- Fig. J 3-Rear Axle.

Car Manuals Direct

34 Chapter II-Lubrication and Inspection

lzers with DRIPLESS

PENETRATING OIL.
r. Door Hinge and Lock
Striker Plate. Lubricate
the door hinge with DRIP-
LESS PENETRATING OM-567
OIL, and use stainless wax Fig. 14~Springs.
on the door striker plate.
s. Remote Control Gearshift Levers. Lubricate gear-
shift levers with PRESSURE GUN GREASE.

3 . 5000·MILE LUBRICATION AND INSPECTION.

All of the lOOO-Mile Lubrication and Inspection should
be included with the following:
a. Brake Master Cylinder. Check the master cylinder
brake fluid level (correct levell/2" from top) and add
FORD BRAKE FLUID, 8A-19542, if required (fig. 15).
CAUTION: Always clean
any dirt from around the
filler plug before remov·
ing it from the master
cylinder.
OM·572 h. Distrihutor. Lubri-
Fig. 15-Srake Master cate the distributor with a
Cylinder. few drops of *ENGINE
*Same grade as used in engine.
Car Manuals Direct
 Section 3-5000-Mile Lubrication and Inspection 35

Fig. I6-Distributor. Fig. I7-Generator.

OIL (fig. 16). When the distributor contacts are serviced,

lubricate the cam with a light coating of Ford distributor
grease 8A-19575.
CAUTION: Do not allow any lubricant to get on the
face of the points.
c. Generator. Lubricate
the generator (fig. 17) with
a few drops of *ENGINE
OIL. Use care not to drip oil
on the generator brushes.
Do not over-lubricate the
generator.
d. Crankcase Ventila- 3362
tion Extension Tnbe. On Fig. I8-Crankcase Venti-
F-7 aQd F-8 trucks, clean lation Extension Tube.
*Same grade as used in engine.
Car Manuals Direct
36 Chapter II-Lubrication and Inspection

the tube filter screen (fig. 18). When operating under

severe dusty conditions, the filter screen should be
checked at least every 1000 miles.
e. Accelerator Cross Shaft. Check the accelerator
cross shaft eye bolts for looseness, and tighten if necessary.
f. Spindle Bolts. Check the spindle bushings for wear.
g. Spindle Connecting Rods. Check the spindle con-
necting rods for looseness or wear. Tighten or replace
if necessary.
h. Drag Link. Check the drag link ball joints for loose-
ness or wear. Tighten the ball joints or replace the drag
link.
i. Clutch Release Equalizer Shaft. Check the clutch
release equalizer shaft for excessive looseness. If the bush-
ings are worn, it will be necessary to replace them.
j. Brake Pedal Free Travel. Check the brake pedal
free travel. If the free travel is more or less than V4 to 1f2
inch, adjust the pedal linkage. J

k. Universal Joints and Slip Joints. Check the uni-

versal joints for looseness. Repair or replace the universal
joints as required.
I. Coupling Shaft Support Bearings. (All "F" Series
Except F-I no inch C.O.E. and 104 inch Parcel
Oelivery.) Check the coupling shaft support bearing for
exceSSIve looseness. Tighten the bearing support cap
screws.
Car Manuals Direct
 \

Section 4- IO,OOO-Mi'e Lubrication and 'nspection 37

m. Springs. Check the spring "U" bolts for looseness

and tighten them as required to the specified torque (see
torque specifications).

n. Linkage. Check the clutch linkage, pins, and park-

ing brake cables for wear. Tighten or replace as required.

4. IO,OOO.MILE LUBRICATION AND INSPECTION.

Both the 1000 and 5000-Mile Lubrication and Inspec-
tion should be included with the following:

a. }'ront and Rear Wheel Bearings. Repack the wheel

bearings (except F -1 truck
rear bearings) with FORD
WHEEL BEARING
LUBRICANT, 8A-19585,
once a year or at least every
10,000 miles. Inspect the
bearings and replace them
if they are pitted or dis-
colored from overheating
(figs. 19 and 20).
h. Transmission. 1\vice
yearly, or at least every
10,000 miles, drain, flush, OM-571
and refill the transmission Fig. 19-Front Whee'
with GEAR OIL (fig. 21). Bearings .
•
Car Manuals Direct
38 Chapter II-Lubrication and Inspection

OM-588
OM-594
Fig. 20-Rear Wheel Bear- Fig. 2 I-Transmission.
ings (Except F-l trucks).

Summer SAE 140 (SAE 90 with remote shift); winter

SAE BO.
c. Rear Axle. Drain, flush, and refill the rear axle (fig.
22) at least twice yearly, or every 10,000 miles. The lubri-
cant to be used for the various truck models is as follows:
(1) F-l, F-6, F-7, F-8, AND F-S (WITH TWO-
SPEED). In summer, use Hypoid or Multi-Purpose lubri-
cant SAE-90 (SAE-140 for temperatures above lOO°F).
In winter, use Hypoid or Multi-Purpose lubricant SAE-
90 (SAE-BO for temperatures below -lOOF).
(2) F-2! F-3, F-4, AND F-S (WITH SINGLE
• Car Manuals Direct
 \

Section 5-Spec:ial Instructions for Power Brakes 39

SPEED). In summer, use Mild E.P. or Multi-Purpose

lubricant SAE-140. In winter, use Mild E.P. or Multi-
Purpose lubricant SAE-90 (SAE-80 for temperatures
below -10°F).
(3) TWO-SPEED ELECTRIC AXLE SHIFT
UNIT. Add engine oil to level of filler plug. Use SAE-IO
above O°F; use three parts SAE-IO plus one part kerosene
below O°F.
d. Wheel Alignment. Check the wheel alignment and
steering controls. This type of work should be done by
your Ford dealer, who has both trained personnel and
the equipment for handling these operations.

5. SPECIAL INSTRUCTIONS FOR POWER

BRAKES.
NOTE: On trucks
equipped with air brakes
or vacuum brakes, in-
clude the following lubri-
cation points at the time
intervals as outlined be-
low when lubricating the
chassis.

a. Brake Camshaft.
OM-555
Lubricate the brake cam-
Fig. 22-Rear Axle. shaft (fig. 23) with PRES-
Car Manuals Direct
40 Chapter II-Lubrication and Inspection

Fig. 23-Bralce Camshaft.

SURE GUN GREASE every 1000 miles, using care not
to over-lubricate. Whenever wheels and drums have been
removed, lubricate the cams with WHITE WATER-
PROOF GREASE 8L-19586-A.

h. Slack Adjuster. Remove Allen plug and fill cavity

with PRESSURE GUN
GREASE every 10,000
miles. Check the slack ad-
juster for looseness on the
camshaft and tighten it if
necessary (fig. 23).

c. Anchor Pins. When-

ever drums are removed, or OM-582
every 10,000 "miles, lubri- Fig. 24-Bralce Valve Roller.
.
Car Manuals Direct
 Section 5-Special Instructions for Power Brakes 41

cate the brake anchor pins with PRESSURE GUN

GREASE using care not to over-lubricate.
d. Brake Valve Roller. Lubricate the brake valve
roller and actuating arm with *ENGINE OIL every
1000 miles (fig. 24).
e. Air Compressor. Wash the air compressor intake
strainer element (fig. 25) in a solvent every 2000 miles.
Under dusty conditions, clean daily if required.
f. Air Compressor Crankcase Breather Filter
Screen. Wash the crank-
case breather filter screen
in a cleaning solvent every
2000 miles. Under dusty
conditions, clean daily if
required.
g. Air Compressor
Crankcase. Drain and re-
fill the air compressor
crankcase with 1 pint
*ENGINE OIL every 2000
miles. Check oil level daily,
add oil if required (fig. 25).
h. Vacuum Brake
Booster Air Cleaner.
OIL lEVEL GAUGE DRAIN PLUG
Wash the brake booster air 3361
cleaner element in cleaning Fig. 25-Air Compressor.
.
"'Same grade as used in engine.

Car Manuals Direct

42 Chapter II-Lubrication and Inspection

4929
Fig. 26-Vacuum Brake Fig. 27-Vacuum Brake. >
Baoster Air Cleaner.

solvent. Dry the element, and wet with *ENGINE OIL

every 10,000 miles (fig. 26).
i. Vacuum Brake Booster. Remove the filler plug.
Fill the booster cylinder to level of filler plug with AIR
CYLINDER OIL M-4856 once a year or at le~st every
20,000 miles (fig. 27). Check the vacuum lines for leaks.
Repair or replace the lines if required.

•
*Same grade as used in engine.
Car Manuals Direct
 Chapter
III
ADJUSTMENTS
Sectic>n Page
1. Ignition .System ....................... 44
2. Carburetor Adjustment . . . . . . . . . . . . . . . .. 46
3. Clutch Adjustment .................... 50
4. Hydraulic Brake Adjustment . . . . . . . . . . .. 51
5. Air Brake Adjustment . . . . . . . . .. . . . . . . .. 52
6.. }>arking Brake Adjustment . . . . . . . . . . . . .. 53
7. Steering Gear Adjustment ...... " . . .. . .. 55
~. / Headlight Alignment. . . . . . . . . . . . . . . . . .. 58 '-
9. Fan and Generator Belt Adjustment ....... 61
Prompt detection of the need for adjustments and the
immediate application of corrective measures will keep
your truck on the job.
Like any machine, it requires regular and efficient
service if peak performance is to be maintained.
To assist you in these measures, this Chapter is de-
voted to presenting information on the various adjust-
ments that are essential if peak performance is to be
maintained.

Car Manuals
43 Direct
44 Chapter III-Adjustments

1. IGNITION SYSTEM.
The operation of the en-
gine in your truck will be
seriously affected if the dis-
tributor points and spark
plug gap are not kept prop-
erly adjusted and the igni-
tion correctly timed. The
317 CUBIC INCH TIMING
results of improper ignition MARK (6' B.T.C.) 3360
maintenance are sluggish Fig. J -Timing Marks.
engine performance, poor
pick-up and excessive fuel consumption.

a. Ignition Timing with Timing Light. When chEick-

ing the timing with a light, always disconnect the ¥~cu:um
line at the distributor. Connect a timing light to t~'el1gine
with the high tension lead on the No.1 spark plug and
the other two leads to the proper battery terminals. Start
th~ engine and position the timing light so that it flashes
on the crankshaft pulley timing mark and pointer (fig. 1).
The pointer and mark should lin~ up. If they do not line
up, loosen the distributor hold down screw slightly
rotate the distributor until the proper timing is achieved.
Tighten the hold down screw and recheck the timing.

NOTE: On F·7 and F·8 engines there are two timing

marks. Use the correct mark for each engine as shown
in fig. 1. Other engines have one timing mar".
~ ~0'-

Car Manuals Direct

 \

Section I-Ignition System 45

h. Spark Plugs. Spark

plugs may be cleaned with
conventional sand blasting
equipment. Plugs with
cracked or excessively
burned electrodes should
be replaced. Proper spark
plug gap is from 0.025 to
0.028 inch. To set the gap
use a standard round feeler
gauge (fig. 2). Fig.2-Setting
Spark Plug Gap.
c. Distributor Points.
Maintenance of distributor points is one of the most
important items in the ignition system. Cleaning of the
points, replacing when excessively worn, and the proper
spaciqg of the points is essential for peak efficiency.
(1) ADJUSTMENT. Remove the distributor cap.
Crank the engine until the breaker arm rubbing block is
the
screws. Insert an adjusting tool
or "r,".."..""I.1""'"'' JU~!t.~!,erlt slot and move the point
assem IV' I11n1:n1the't.-j:f..:o.,'b~,..er."".,.~~.,.~ established (fig. 3). The
point spacing!'is' ... ,.,.~.~. the 6-cylinder and
0.014 to 0.016inch·for the lS-c'YllnC1~~r engine.
,-. -.-.. -' ,

Tighten the poiJta.ssernblyl()ck. screws after making

the .adjustm.ent. Car Manuals Direct
46 Chapter III-Adjustments

(2) REP LAC E -

MENT. Remove the dis- CONDENSER
Adjusting Wrench
tributor cap. Remove the
point assembly lock screws
(fig. 3). Lift the point
assembly off the breaker
plate, then disconnect the
condenser and primary
wires. When installing new
points make certain the
ground wire is properly in-
stalled under the lock
screw.
y
SLOT LOCK SCREWS
2. CARBURETOR
4917
ADJUSTMENT.
Before making the car- Fig.3-Point
buretor adjustment, run Replacement.
the engine until it reaches normal operating temperature.
a. 6-Cylinder Engine. Turn the idle fuel adjusting
screw"B" (figs. 4, 5, or 6) clockwise until it seats lightly,
then back it off one turn. Start the engine and adjust the
idle speed screw "A" (figs. 4, 5, or 6) until the engine runs
at approximately 500 revolutions per minute. Thrn the
idle fuel adjusting screw "B" in until the engine begins
to run uneven, or rough, then slowly turn the adjusting
.
screw out until the engine begins to "roll:' Finally turn the
Car Manuals Direct
 Section 2-Carburetor Adjustment 47

"8" IDLE FUel ADJUSTMENT

ACCElERA TlNG
PUMP LINK
3357
Fig. 4-6-Cylinder Carburetor Used on F-J Through F-5 .

adjusting screw in again just enough .so the engine runs

smoothly. Reset the idle speed adjustment if necessary.
h. V -8 Engine. Thrn the idle fuel adjusting screws "B"

"A" IDLE SPEED

ADJUSTMENT
" 8" IDLE FUEL
ADJUSTMENT
1_ _ _ _ "("

ACCELERATING
PUMP LINK

4912
Fig. 5-Updraft 6-Cylinder Carburetor Used on F-6 C.O.E .
•
Car Manuals Direct
48 Chapter III-Adjustments

"8" IDLE fUEl ADJUSTMENT

PUMP LINK
"A" IDLE 4910

Fig. 6-6-Cylinder Carburetor Used on F-6 Conventional.

(figs. 7 or 8) clockwise until they seat lightly, then back

off each adjusting screw approximately one turn. Start
the engine and adjust the idle speed screw "A" (figs. 7
or 8) until the engine runs at approximately 500 revolu-
tions per minute. Thrn both adjusting screws "B" in the
same amount until the engine begins to run uneven or
rough, then slowly turn the adjusting screws out until the
engine begins to "roll!' Finally turn the adjusting screws
in again until the engine runs smoothly. It may be neces-
sary to turn one adjusting screw slightly more than the
other as a final adjustment. Reset the idle speed adjust-
ment "A" if necessary.
c. Accelerating Pump Adjustment. The accelerating
pump is provided with an adjustment for varying the
quantity of fuel discharged into the engine upon accel-
•
Car Manuals Direct
 Section 2-Carburetor Adjustment 49

Fig. 7-Dual Downdraft Carburetor F-7 and F-B.

eration. Adjustment is made by changing the position of

the pump link "C" (figs. 4, 5, 6, 7, and 8). The center
hole is. the average setting for medium temperatures.
For hot weather, set the link pin in the hole nearest the
throttle shaft and for cold weather use the outer hole.

Fig. B-Dual Downdraft Carburetor Used on F- J through

F-6 (Except Parcel Delivery).
Car Manuals Direct
50 Chapter III-Adjustments

Fig. 9-Clutch Adjustment.

3. CLUTCH ADJUSTMENT. '

The clutch pedal free travel (fig. 9) must be kept
within specifications to provide proper clutch operation.

Excessive free travel will prevent the clutch from

completely disengaging, making gearshifting difficult and
also causing gear clash. Insufficient free travel will cause
clutch slippage and result in premature clutch wear.

To adjust the clutch pedal free travel, remove the clevis

pin from the clutch equalizer lever (fig. 9) on the left-
hand side of the clutch housing. Adjust the length of the
pedal rod by turning the clevis until the clutch pedal free
travel is within limits. Connect the clevis to the equalizer
lever, and inst~ll the clevis pin.
Car Manuals Direct
 Section 4-Hydraulic Brake Adjustment 51

4. HYDRAULIC BRAKE ADJUSTMENT.

The hydraulic brakes require a minimum of attention.
Minor adjustments to compensate for natural lining wear
can readily be made.

Because of the variety of trucks, four types of brakes

dre used. Each model is equipped with a brake system
designed specifically for that particular truck.

a. F-I, F-2, F-3 and F-3 Parcel Delivery (Rear).

Jack up the wheel. Remove the cover from the adjusting
slot in the brake back plate. Insert a screw driver or
adjusting tool through the adjusting slot engaging the
adjusting screw. Moving the handle of the screw driver
or tool up will expand the brake shoe. Expand the shoes
until the wheel can just be
turned by hand, then back CAM ADJUSTMENT
off the adjusting screw
about 8 clicks or until the
wheel .turns freely. Make
this adjustment at all
wheels. Install the adjust-
ing slot covers.

h. F-4, F-5, F-6 amI F-3

Parcel Delivery (Front) . .
Each service brake is pro-
vided with two adjusting
cams on the brake back Fig. IO-Brake Adjustment.
Car Manuals Direct
(

52 Chapter III-Adjustments

plate (fig. 10) to compensate forJining,wear. 'furneach .

adjusting cam in the direction shown in figure 10 until
the brake shoes drag against the brake drum, then back
off the adjusting cam until the shoe dOes not drag against
the brake drum. Repeat this'operation at each adjusting
cam.
c. F~7 and F·8 Brakes. The front wheel brakes differ
from the rear brakes.
To adjust the front wheel brakes, turn the adjusting
cam in the direction as shown by the arrows in figure 10
until the brake shoe drags against the brake drums, then
back off the adjusting cam until the·shoe does not drag.
To adjust the rear brakes, remove the adjusting slot
covers from the brake back plate. Insert a % inch Allen>
wrench through one of the adjusting slots, engaging the
adjusting worm screw. 'furn the wrench in the direction
oOorward wheel rotation until the brake shoe begins to
drag on the drum. Press the pedal to center the brake
shoes, then recheck to make certain the brake is still
drag~ing.'furn the wrench in the opposite direction until
the drag is relieved, then turn the wrench an additional
turn to allow working clearance. Repeat this operation
on the second shoe. Install the adjusting slot covers.
5. AIR BRAKE .ADJUSTMENT.
Slack adjusters are provided at each wheel to adjust
the brake shoes, see fig. 11. Before adjusting the brake,
apply the brakes and measure the travel of the brake
Car Manuals Direct
 \
Section 6-Parking Brake Adjustment 53

SLACK
ADJUSTER
BRAKE CHAMBER
FRONT BRAKE REAR BRAKE 4914

Fig. J J -Air Brake Adjustment.

chamber push rod. The maximum travel at whith. time

the brakes should be readjusted is 1% inches fOt-the
front and 1 % inches for the rear brakes. To adjp.¢~the
rear brake slack adjuster, depress the lock sleeve (fig.
1 I
!

11), and turn the slack adjuster adjusting screw clock-

wise. Adjust the rear brake chamber push rod travelto
3/4 inch. 1Urn the screw on the front slack adjuster to
adjust the front brakes. Adjust the front brake chamber
push rod travel to % inch.
6; PARKING BRAKE ADJUSTMENT.
1\vo types of parking brake systems are used..On some

Car Manuals Direct

54 Chapter III-Adjustments

models, the rear service brakes are used and are manually
operated by a hand lever , through cables. On heavier
models, an external brake band is mounted directly be-
hind the transmission, and is operated -either by a hand
lever rpounted over the transmission or by cable.
a. F·l Trucks. Adjust the service brakes before
attempting to adjust the j:).ar\cing brake. Release the
parking brake lever, and apply the foot brake. With the
foot brake applied, adjust each rear wheel brake cable
at the clevis until the excess slack is removed from the
cable (fig. 12). The cables should be so adjusted that
when the parking brake lever is applied, the equalizer
bolt will be in the center of the equalizer slot (fig. 12).
Adjust the hand lever cable at the clevis so that, with the

BRAKE CABLE ADJUSTMENT CLEVIS EQUALIZER

Fig. J2-Parking Brake Cable Adjustment .

. Car Manuals Direct
 \
Section 7-Steering Adjustment and Wheel Alignment 55

foot brake applied, 1;2 inch movement of the parking

brake lever is possible before the slack of the cables is all
taken up.
h. F·2 Through F·8 Trucks aud F-3 Parcel Delivery
Trucks. Release the parking brake. Observe the .position
of the cam (fig. 13) to make sure the flat portion is rest-
ing on the brake band bracket. If the cam is not flat with
the bracket, remove the clevis pin from the upper part
of the cam and adjust the clevis rod to allow the flat por-
tion of the cam to rest on the brake band bracket. Install
the clevis pin and cotter pin.
Remove the lock wire from the anchor adjusting screw,
and turn the adjusting screw clockwise until a clearance
of 0.010 inch is established between the brake lining and
the brake drum at the anchor bracket.
Loosen the lock nut on the adjusting screw for the
lower half of the brake band, and adjust the screw to
establish a 0.010 inch clearance between the lining and
the brake drum for the lower half of the brake. Tighten
the lock nut. Tighten or loosen the adjusting nut for the
upper half of the brake band to establish a clearance of
0.010 inch between the lining and the brake drum. Install
the locking wire in the anchor adjusting screw.
7. STEERING ADJUSTMENT AND WHEEL
ALIGNMENT.
Proper alignment of the front wheels must. be main-
tained to assure ease of steering and satisfactory tire life.
Car Manuals Direct
56 Chapter III-Adjustments

ADJUSTING NUT FOR LOWER

PORTION OF BRAKE BAND

ADJUSTING SCREW NUT LOCK

USE ON PARCEL DELIVERY 4919
Fig. 13-External Type Brak.e Band.

Front end alignment should be checked periodically with

precision equipment. Correction should be made by me-
chanics thoroughly
. familiar with alignment procedures .
Car Manuals Direct
Section 7-Steering Adjustment and Wheel Alignment 57

a. Toe-In. Usually the

toe-in of the front wheels
will not change except for
some mishap that bends
either one, or both, of the
spindle arms, or the spindle
connecting rod. The toe-in
of the front wheels is cor-
rect when, after the truck
Fig. J4-Toe-in has been pushed forward
Adjustment. to take up any looseness,
the distance between the
front of the front tires is 0 to 1/ 16 inch less than the
distance between the rear of the front tires. The setting
is obtained by adjusting the length of the spindle con-
necting rod (fig. 14). To adjust the spindle connecting
rod length, loosen the clamp nut at each end of the rod,
and turn the rod until 1/ 16 inch toe-in is obtained.
Tighten the clamp nuts.
h. Steering Gear Lash
Adjustment. Turn the
steering wheel so that the
front wheels are in the
straight ahead position.
Raise the truck until the LOCK NUT LOCK 4946
weight is removed from the Fig. J 5-Steering Gear
wheels. Remove the sector Lash Adjustment.
Car Manuals Direct
58 Chapter III-Ad;ustments

shaft thrust screw lock nut and lock (fig. 15). Thrn the
thrust screw clockwise until it is tight, then back it off
approximately 1fs turn.Thrn the steering wheel to the
right and to the left to make sure the sector shaft does
not bind in the mid position. If the steering is binding,
it will be necessary to back off the thrust screw just
enough to eliminate the bind. Install the lock and lock nut.
8. HEADLIGHT ALIGNMENT.
With the vehicle empty and the tires inflated to the
recommended pressure, locate the vehicle on a level sur-
face 25 feet from a wall or screen. Measure the distance

t--_ _-t-VERTICAL CENTER

LINE OF TRUCK

" B" LINE OF

ADJUSTMENT

<fOF LEfT q;OF RIGHT

HEADLIGHT HEADLIGHT
HEADLIGHT 25 FEET FROM WAll
(HIGH BEAM DIAGRAM) 4921

Fig.J6-Headlight Alignment Diagram.

Car Manuals Direct
 \

Section 8-Headlight Alignment 59

from the center of the headlight lens to the floor, and

draw a horizontal line on the wall or screen the same
height. Measure 3 inches below this line and draw an-
other horizontal line parallel to it as shown in figure 16,
dimension "B!'
Locate the center of the vehicle and draw a vertical
center line, see fig. 16. To locate the center of the vehicle
in relation to the wall or screen, first locate the center
of the rear window. Then sight through the rear window
and along the top of the hood. On C.O.E. trucks, place
a straight edge exactly at the center of the hood so that
it is visible from the rear window.
Thrn on the headlight upper beam. Adjust the light
so the centers of the two beams of light extend straight

HEADLIGHT BULB RETAINING SCREWS 4922

Fig. 17-Headlight Adiusting Screws.
Car Manuals Direct
60 Chapter III-Adjustments

forward and center on the lower line as shown in figure

16. To tilt the headlight beam up or down, remove the
headlight trim ring, and turn the vertical adjusting screw
(fig. 17) located at the top of the headlight, in or out.
The side movement of the beam is accomplished by turn-
ing the horizontal adjusting screw located at the side of
the headlight (fig. 17).
a. Headlight Bulb Replacement. Remove the retain-
ing screw from the headlight trim ring and remove the
ring (fig. 18). Loosen the bulb retaining ring screws (fig.
17). Thrn the retaining ring to the left to remove. Dis-
connect the headlight bulb from the socket. When install-
ing the new bulb be sure it is properly positioned with
"top" marking up.

BULB RETAINING RING

Fig. IS-Headlight Disassembled.

Car Manuals Direct
 Section 9-Fan and Generator Se't Adjustment 61

9. FAN AND GENERATOR BELT ADJUSTMENT.

To assure satisfactory generator, fan, and water pump
operation, proper belt adjustment must be maintained.
a. 6-Cylinder Engine Belt Adjustment. The 6-cyl·
inder engine uses two belts, both of which are adjustable
Loosen the generator mounting bracket pivot bolts, and
the adjustment arm lock bolt (fig. 19). Move the gener-
ator either toward or away from the engine until the
proper belt tension is obtained. Proper adjustment is %
inch belt deflection under normal thumb pressure (fig.
19). While holding the generator in this position, tighten

Fig. 19-6-Cylinder Se't Adjustment.

Car Manuals Direct
62 Chapter III-Adiustments

the adjustment arm lock bolt and pivot bolts.

To adjust the fan belt, loosen the fan bracket mount-
ing bolts, raise or lower the fan bracket until 112" belt
deflection is obtained under normal thumb pressure
(fig. 19).
b. V -8 Engine Belt Adjustment. The V~8 engines are
equipped with two belts. Each of these belts is adjustable.
On F-7 and F-8 trucks, the fan bracket is mounted
separately on the engine block. To adjust, loosen the
adjusting screws at the fan bracket, then raise or lower
the bracket until 112" belt deflection is obtained under
normal thumb pressure (fig. 20).
To adjust the generator belt, loosen the generator
FAN BELT ADJUSTMENT BOLT

Fig. 20..Belt Adiustment F-7 and F-8 Trucks.

Car Manuals Direct
 Section 9-Fan and Generator Belt Adjustment 63

f-1 THROUGH F-6 8-CYLINDER ENGINE

Fig. 2J--Belt Adjustment, F-J Through F-6 Trucks.
mounting bracket pivot bolts and the adjustment arm
lock bolt, (fig. 20). Move the generator away from or
toward the engine until %" belt deflection is obtained
under normal thumb pressure (fig. 20). Tighten the
adjustment arm lock bolt and pivot bolts.
On F-l through F-6 the fan bracket is mounted to the
generator bracket (fig. 21). To make the adjustment,
loosen both the fan and generator adjustment screws.
First raise the generator bracket u!ltil % . inch belt de-
flection is obtained under normal thumb pressure, then
tightE:,tl the generator bracket screws.
Car Manuals Direct
 Chapter
IV
WHEELS AND TIRES
Section Page
1. Tires .......................... . ..... 64
2. Drop-Center Wheel Tire Replacement (F-l
and F-2) ............................. 66
3. Semi-Drop Center Wheel Tire Replacement
(F-3 Parcel Delivery) ................... 67
4. 1\vo-Piece Rim Tire Replacement (F-3
through F-6, and F-7 Disc Wheel) ......... 70
5. Three-Piece Rim Tire Replacement (F-7
and F-8) ............ . ......... .. ..... 73
I. TIRES.
The condition and care of the tires on your truck should
be one of your greatest concerns. Today's tires, if given
reasonable care, will give you many thousands of miles
of trouble-free service. But if you abuse them, even the
finest tires may fail you prematurely.
a. Tire Pressure. Over-inflation, particularly if com-
bined with an overload, makes tires more subject to im-
pact breaks and cutting, also, an unnecessary hard ride
is experienced. In addition to reducing deflection, over-
inflation results in rapid wear due to less tire contact area
with the road surface:
64
Car Manuals Direct
 Section '-Tires 65

When tpe tire pressure is below the recommended

pressure, tires will overheat and rapid wear and pre-
mature tire failure will result. See Specifications for
proper pressures.
Therefore, tire pressure should be checked regularly.
Once a week is not too often. The valve cap should also
be kept tight on all tires.
Always check the air pressure of the tire ·when the
tire is cool. The tire temperature increases when the tire
is used, which causes the air pressure to rise. The .air
pressure may increase as much as 30% without damage
to the tire. Never bleed air from hot tires. Always reduce
the load or the speeds when the increase is greater
than 30%.
h. Tire Rotation. If the front and rear tires on your
truck are the same size, it is recommended that you cross-
switch them about every 5,000 miles for maximum tire
life (fig. 1). It is not necessary to remove the tires from
the rim, but cross-switch the complete wheel and tire.
On trucks with dual wheels, tire rotation is not
required. However, it .is im-
portant that the .dual tires
be matched so that the
diameters are within %"
with the smallest tire on
the inner side to conform 4927
to road contour. Fig. J -Tire Rotation .
• Car Manuals Direct
66 Chapter 'V~Whee's and Tires

New tires should always be installed on the front

wheels.
2. DROP·CENTER WHEEL TIRE REPLACEMENT
(F.l ANDF.2).
Remove the wheel. Remove the valve core to deflate
the inner tube completely.
a. Remove Tire from Wheel. Loosen both tire beads
from the wheel rim, using a tire iron if necessary. With
the wheel lying flat on the floor, stand on the tire with
the feet about 15 inches apart opposite the valve, then
force the tire bead off the rim ledge and into the drop
center part of the wheel rim.
Insert two tire irons about 8 inches apart between the
tire bead and the wheel rim near the valve, .and pry the
bead over the wheel rim. Leaving one tire iron in position,
follow around the wheel rim with the other tire iron to
remove the remainder of the bead. Remove the tube.
Stand the wheel in an upright position with the bead
in the drop-center part of the rim at the bottom. Insert
the tire iron between the bead and the wheel rim at the
top side of the wheel, and pry the wheel out of the tire.
h. Install Tire on Wheel. Install the valve core in
the inner tube valve stem. Inflate the tube until it is barely
rounded out, and insert it in the tire casing. The valve
stem is off-center on the inner tube. Be sure the valve
stem is in line with the valve hole in the wheel.
Place the. tire on the wheel rim with the balancing
Car Manuals Direct
 Section 3-Semi-Drop Center Tire Replacement 67

mark on the casing in line with the valve stem. Guide

the valve stem through the valve hole. Push the bottom
bead down into the drop center part of the rim at the
valve, and force the remaining portion of the bead over
the rim ·using a tire iron if necessary.
Insert a tire iron between the top bead and the wheel
rim at the valve, and pry the bead over the rim. Hold
the iron in this position and continue to pry with another
iron around the rim until the top bead is in place.
Inflate the tube. slowly, and see that the tire is centered
on the rim on both sides. This "centering" may be done
by bouncing the tire after approximately 15 pounds of
a~r pressure has been added. Finish inflating the inner
tube to the recommended pressure.
3. SEMI-DROP CENTER WHEEL TIRE REPLACE-
MENT (F-3 PARCEL DELIVERY).
Remove the wheel. Remove the valve core to deflate
the inner tube completely.
a. Remove Tire from
Wheel. Place the wheel on
the floor with the side ring
up. Insert the straight end
of the rim tool in the notch,
and pry the side ring down
to unseat the tire beads
(fig. ~). Fig. 2-Prying Side Ring.
Car Manuals Direct
68 Chapter IV-Wheels and Tires

With the help of the tire

iron, continue around the
rim until the tire bead is
loose.
To remove the side ring,
insert the straight end of
the rim tool into the notch.
Hold the opposite . side of
the ring in the gutter groove
then pry the ring out and
up with the rim tool. Work
the rim tool and the tire
iron around the rim to re- fig. 3-Prying Wheel Out
move the ring; of Tire.

Turn the wheel over, and loosen the tire bead from
the rim by hammering the hook end of the rim tool be-
tween the rim flange and the tire bead. Pry the tire
bead away from the taper until the tire is loose in the
well of the rim.
Stand the tire upright, and pry the upper part of the
bead over the edge of the rim with the tire iron (fig. 3).
h. Install Tire on Wheel. Place the inner tube and
the flap in the tire So that the valve stem is at the balanc-
ing mark on the tire. Place the wheel on the floor with
the gutter side up. Place the tire on the rim and insert
the valve steip into the valve hole.
Car Manuals Direct
 \
Section 3-Semi-Drop Center Tire Replacement 69

4934

Fig. 4-Prying Tire Over Fig. 5-Installing Side

Rim Gutter. Ring.

Using the tire iron and the rim tool, start at the valve
and work around the tire until the lower bead is in the
well (fig. 4).
Force the upper bead over the rim gutter with the tire
iron starting at the valve.
Place half the side ring opposite the notch in the rim
gutter groove so that the scalloped or cutaway portions
of the ring span the rim gutter. Insert the straight end
of the rim tool into the ring notch, and pull the ring on
the rim; at the ,same time forcing the ring over the gutter
with a soft hammer (fig. 5).
CAUTION: The side ring must be entirely seated
beneath the entire circumference 01 the gutter, other•
•
Car Manuals Direct
70 Chapter IV-Wheels and Tires

wise it will blow off during

inflation or when the ve·
hicle is in operation. When
inflating the tire, do not
stand in Jront oj side ring.
When remounting the
wheel, the nuts should be
tightened to 65·75 foot·
pounds torque.

4. 2·PIECE RIM TIRE

REPLACEMENT (F.3
THROUGH F-6, AND
Fig. 6-Removing Ring F·7 DISC WHEEL).
from Rim.
To remove the ring from
a rim without a tire, stand the wheel on end so that
the tool slot of the ring is at the top, and the lower
portion of the ring is in the
rim well. Insert the rim tool
between the ring slot and
the gutter of the rim, and
lift the ring over the gutter
(fig. 6).
a. Remove Tire from
Wheel. To remove the tire
from the wheel remove the Fig. 7-1oosening Tire
wheel. Remove the valve Bead.
•
Car Manuals Direct
 '\

Section 4-2..Piece Rim Tire Replacement 71

4936
Fig. a-Removing Ring Fig. 9-Removing Tire
from Gutter. Bead from Rim.

core to completely deflate the inner tube.

Place the wheel on the floor with the ring side up.
Insert the hook end of the rim tool between the ring
flange and the tire bead, and pry the tire away from .the
tapered seat of the ring (fig. 7).
Insert the straight end of the rim tool into the notch
between and below the double embossing. Force the tool
downward to' disengage the ring from rim gutter (fig. 8).
Work the tool around the rim until the ring is free from
the rim and remove the ring. 'Ibrn the wheel over and
loosen the opposite tire bead from the rim (fig. 9). Re-
move the tire from the rim. '
h. In8tall Tire on Wheel. Place the inner tube and
the flap in the tire so that the valve stem is at the bal-
ancing mark on the tire. Place the tire on the . rim with
the valve inserted in the valve hole and pointing down-
ward. Place the side ring in position with the notch about
3 inches from the valve stem (fig. 10) .
• Car Manuals Direct
72 Chapter IV-Wheels and Tires

Fig. IO-Placing Ring in Fig. I I -Driving Ring in

Position. Place on Gutter.
Insert the straight end of the nm tool in the notch, and
pull the side ring on the rim, at the same time forcing the
ring over the gutter with a soft hammer (fig. 11).
CAUTION: Press down on the ring as shown in figure
12, and make sure the
ring will rock or teeter.
This is your assurance
that the ring is properly
and completely seated
around the gutter. If a
portion of the ring is rid-
ing on the top of the gut-
ter, it will become cocked,
and will blow off during
inflation, or after the
Fig. 12-Checking Ring. vehicle is in operation•
•
Car Manuals Direct
 \

Section 5-3-Piece Rim Tire Replacement 73

When inflating the tire do not stand in front oj the

locking ring.
When re-mounting 17-inch wheels, the wheel nuts
should be tightened to 65-75 foot-pounds torque. Wheel
nuts on 18-and 20-inchwheels should be tightened to
400-500 foot-pounds torque~ After a short run re-tighten
the wheel nuts making sure to back-off the outer nuts to
tighten inner nuts where dual wheels are used.
5. 3·PIECE RIM 'fiRE REPLACEMENT (F.7 AND
F.8).
The F-7 and F-8 trucks are equipped with cast wheels
with a removable rim as shown in fig. 13. The rim is
fastened to the wheel with six clamps evenly spaced
around the rim. Although the cast type wheels are
standard equipment on F-7 and F-8 trucks, the tire re-
moval is identical on the disc type wheels which are
available as optional equip-
ment.
a. Remove Rim and
Tire from Wheel (Cast
Type Wheel). Remove the
nuts from the rim clamps
and remove the clamps.
Lift the rim and tire from
the wheel.
With dual rear wheels, Fig. J 3-Cast Wheel Used
lift Qff the outer rim and on F·7 and F-8.
Car Manuals Direct
74 Chapter IV-Wheels and Tires

tire, remove the spacer rim, and the inside rim and tire
assembly.
h. Remove Tire from Rim. Remove the valve core
to deflate the inner tube. Insert the straight end of the
rim tool in the depression in the locking ring, and press
down on the side ring to loosen the tire bead from the
tapered seat (fig. 14).
Insert the straight end of the rim tool in the notch
provided in the locking ring and pry the locking ring out
of the gutter (fig. 15).
Lift out the locking ring, and remove the side ring
(fig. 16). Thrn the wheel over and pry the tire bead away
from the taper until the tire is free. Remove the tire from
the rim.
c. Install Tire on Rim. Always place the inner
tube and flap in the tire so that the valve stem is at
the balancing mark on the tire. Place the tire on the
rim with the valve stem inserted in the slot with the
valve pointing upward.
Place the solid side ring
in position on the tire, and
insert the tapered toe of
the split locking ring be-
tween the rim and the side
ring (fig. 17). 4941
Using a soft hammer, Fig. J 4-Loosening Side
drive the lockjng ring into Ring from Tire Bead.
Car Manuals Direct
 \

Section 5-3-Piece Rim Tire Replacement 75

Fig. 15-lnserting Tool Into Fig. 16-Removing Locking

Removing Notch. Ring.
place, starting at one end of the split ring and progres-
sively driving the ring into the gutter until the entire
ring is seated (fig. 18).
CAUTION: Rings must be entirely seated around the
entire circumference of the rim. Be sure the split ends
are engaged in the gutter, otherwise it will be blown
011 during inflation or after the vehicle is in operation.
When inflating the tire, do not stand in front of the
locking ring.

4944 4945
Fig. 17-Placing LOCking
Ring Between Side Ring Fig. J 8-Starting Lock Ring
and the Bead. with Hammer.
Car Manuals Direct
 Chapter
V
TROUBLE SHOOTING
Se,ction Page
1. Engine................ . . . . . . . . . . • . .. 76
2. Generating System ... . ..... . .......... 80
3. Cooling System ....................... 80
As the operator of your truck you are naturally inter-
ested in carefree and economical operation, and freedom
from road failures. The best way to obtain this freedom
from trouble is to follow a regular lubrication and main-
tenance schedule. As in the case of all mechanical devices,
some trouble is experienced at one time or another regard-
less of the precautions you have taken. This chapter is
designed to assist you in these problems. The information
in this chapter includes trouble symptoms which might
be encountered and their probable cause.
1. ENGINE.
The trouble shooting procedures. outlined in this section
are used to isolate troubles suspected to be in the engine.
a. Engine Will Not Start. If the engine will not start
while being cranked, the trouble in . most cases is either
, a lack of fuel. at the carburetor, or faulty ignition.
NOTE: If the engine is hot and will not sta.rt, it may be
flooded. Open the throttle wide ami attempt to start
the engine.

76
Car Manuals Direct
 Section I -Engine 77
CIRCUIT BREAKER

CIRCUIT BREAKER TO
VO LTAGE REGULATOR CIRCUIT BREAKER TO
1#10 Yellow I -----.~ STARTING MOTOR RelAY
IGNITION SWITCH -...;.~~~----,'\ (#10 Yellow)
TO COIL
(# 16 Red -Green Tr.) TO STARTER BUTTON
(#18 Red-Blue Tr.)
IGNITION SWITCH - - - -
CIRCUIT BREAKER TO
IGNITION SWITCH (#14 Yellow) CIRCUIT BREAKER TO
VOLTAGE REGULATOR
STARTING MOTOR RELAY--_ _ _ _ _ _1!2\ (#10 Yellow)

TO STARTER - - -_ _ _ _ _ _ _ ~

(#10 Yellow)

(#18 Red-Blue Tr.)

6

DISTRIBUTOR

(#16 Red-Green Tr.)

'---".~-- COIL TO DISTRIBUTOR
(#16 Block )

COIL fiRING ORDER

1-5- 3-6- :2-4
OM·516
Fig. 1-6·Cylinder Ignition Circuit.
(1) CHECK FUEL SYSTEM. Check the fuel tank
to see if there is fuel available. Disconnect the fuel l!ne
at the carburetor and crank the engine. If fuel spurts
from the line, check the ignition system. If no fuel comes
from the line, the fuel pump is faulty or the supply line
•
Car Manuals Direct
 78 Chapter V-Trouble Shooting

from the tank is blocked. Repair or replace.

WARNING: Fuel spilled on the engine is a fire hazard.
When work is being performed on the fuel system, be
sure to have a fire extinguisher immediately available.
(2) CHECK IGNITION. Remove a spark plug
wire from the spark plug and hold it 3/16 inch from the
cylinder head while the engine is being cranked.
If the spark jumps this gap, the trouble lies in the
engine and repairs must be made in the shop.
If there is a weak, thin spark, the trouble is in the points
or condenser and either must be replaced.
If there is no spark at all, check the ignition primary
and secondary wiring to see that all cables are in good
condition and connections are clean and tight (fig. lor 2).
If there still is no spark, remove the distributor cap
and observe the contacts as they make and break. If a
slight sparking is observed, the primary circuit is prob-
ably OK. Remove the coil lead from the cap and hold it
3/16 inch from cylinder head while opening and closing
contacts.
If a good spark occurs, either the cap or rotor is shorted
to ground and must be replaced.
If no spark occurs, a thorough check of the ignition
system must be made in the- shop.
c. Engine Will Not Run. If the engine will start, but
will not continue to run, the most probable cause is that
not enough fuel is reaching the carburetor.
If the engine will not pull a load, it may be due to
• Car Manuals Direct
 Section I-Engine 79
CIRCUIT BREAKER

CHARGE INDICATOR
CIRCUIT BREAKER TO
VOLTAGE REGULATOR
(#10 Yellow)
CIRCUIT BREAKER TO
STARTING MOTOR RELAY
(#10 Yellow)
IGNITION SWITCH TO COIL ~~_ _ _ _"TO STARTER BUTTON
(#16 Red· Green Tr.) - -_ _.I (#IB Red· Blue Tr.)
VOLTAGE CIRCUIT BREAKER TO
IGNITION SWITCH - - - . . " . , REGULATOR VOLTAGE REGULATOR
CIRCUIT BREAKER TO (#10 Vellow)
IGNITION SWITCH (#14 Yellow)

BATTERY

COIL TO DISTRIBUTOR (#16 Black ) - _ _..,.....-__~

COIL ---4..l---1

COIL TO IGNITION SWITCH

(116 Red Green Tr.) - - - - - - - \
FIRING ORDER
1-5- __ 8_6_3_7_ OM-513
Fig. 2-8-Cylinder Ignition Circuit.

overheating, insufficient fuel supply at the carburetor, or

faulty ignition.
If the engine is overheating, check the coolant level
•
Car Manuals Direct
80 Chapter V-Trouble Shooting

in the radiator. Inspect the radiator fins to see that they

are not clogged. Check for collapsed coolant hoses.
If enough fuel is being delivered to the carburetor, the
float level may be low or the carburetor passages may
be dirty. The carburetor will have to be disassembled,
cleaned and adjusted.
Check the ignition system. If the ignition system is
in good condition, a thorough check of the engine must
be made in the shop.
2. GENERATING SYSTEM.
Check the condition of the wires in the generating
circuit (fig. 3). Make sure all connections are clean and
tight. If the wiring and connections are in good condition,
check the generator and the regulator.
a. Check Generator and Regulator. Disconnect the
field wire from the FIELD terminal of the regulator and
connect it to the ARM terminal (fig. 3). Start the engine
and observe the reading on the charge indicator as the
engine speed is increased. If the generator charge does
not increase, the generator is at fault and must be repaired
or replaced. If the generator charge increases as the
engine is speeded up, the regulator is at fault and must
be replaced.
3. COOLING SYSTEM.
The various units that control engine cooling are
designed to provide a liberal margin of safety and, in
most cases, correction or adjustment of the units will
.
reestablish adequate cooling. The following procedures
Car Manuals Direct
 \

Section 3-Cooling System 81

will help in locating the cause of trouble in the system.

First check the fan belt adjustment and condition.
Make sure there is sufficient coolant in the radiator. If
the coolant level is low check the system for leakage.
Tighten the hose connections and repair leaks where
necessary. Check the radiator for restrictions to normal
CIRCUIT BREAKER - -_ _ _ _...,
CHARGf INDICATOR
CIRCUIT BREAKER TO-_ _- - '
TO CIRCUIT BREAKER
VOLTAGE REGULATOR
1#10 Yellowl
(#10 Yellow I
VOlTAGE
REGULATOR

r----FROM
CIRCUIT BREAKER
STARTING MOTOR
RelAY TO REGULATOR
(#10 Yellowl

TO GENERATOR FielD
TUMINAL
(#16 Block · White Tr.1

FROM GENERATOR ARMATURE

TO VOLTAGE REGULATOR

~
1#10 Yellow·Btock Tr.}
GENERATOR ARMATURE
TO REGULATOR
(#I O·Yellow . Block Tr.)
GROUND WIRE
TO GENERATOR
(#12 Btock· Red Tr.)
[
CHARGE INDICATOR TO ·ClRCUIT BREAKER GENERATOR
1#10 Yeltow)
GENERATOR FielD TERMINAL
(#16 Block _ Whit. Tr .l

OM-517
Fig. 3-Generating System.
Car Manuals Direct
82 Chapter V-Trouble Shooting

air flow. Clean the air passages when necessary. Check

the operation of the temperature indicator, and correct
it if necessary. If all of the above units are in good con-
dition, follow the procedure below.
a. Check Proper Driving Habits. Heavy duty truck
operation requires the use of the proper transmission
gear ratio to prevent overload of the engine. By using
higher engine to road speed ratios, the engine speed is
increased, consequently the fan and water pump circu-
lation is increased, thus providing more cooling for the
engine.
b. Check Exhaust System. Inspect the exhaust pipes,
exhaust thermostat valve, muffler, and tail pipe for
restrictions. Make any necessary corrections.
c. Check Ignition Timing. Check the distributor
timing and adjust if necessary.
d. Check Thermostats. Remove the thermostat(s)
and place in hot water with a thermometer. Standard
thermostats should start to open at approximately 150 0
F. and be fully open at 170 0 F. Replace any faulty ther-
mostats.
e. Flush Cooling System. Use "Regular" cooling
system cleaner 1A-19527-A or "Heavy Duty" cleaner
1A-19527-B according to instructions on the container.
f. Check For Lime Deposits. Remove a cylinder head
and check the water openings for excessive lime deposits
restricting the openings. Clean the cylinder block and
head(s), if deposits are present.
• Car Manuals Direct
 Chapter
VI
SPECIFICATIONS
Section Page
1. Rear Axle Types, Ratios, and Tread . . . . . . . . 83
2. Transmission Types, and Ratios .. . .. .. . ... . .... . . 84
3. Load Capacity, and Tire Pressures. . . . . . . . . . . . . . .. 85
4. Wheel Alignment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 86
5. Engine, Ignition, Fuel System, and
Cooling System. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 87
6. Electrical (Except Ignition) .. .... . . . . . . . . .... . ... 90
7. Brakes ........ . .. ........ . ... . .. . ........ . .. . .. 91
8. Capacities ... . .. . . ... . . .... . . . . " . . . .. . ...... . . . 93
9. General Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . 94
1. REAR AXLE TYPES, RATIOS AND TREAD.
Tread for Max.
REAR AXLE Tire Equip.
Truck Std. Opt.
Series Type Ra tio Ratio Front Rear
F-l Hypoid Geart 3.92 4.27 58%4 60
F-2 Spiral Bevel Gear 4.86 4.11 571%; 62
F -3 Spiral Bevel Gear 4.86 4.11 57 23,.{z 62
F-3 "'.1.1 Spiral Bevel Gear 4.86 4.11 61 62
FA Spiral Bevel Gear 5.83 5.14 596 ~ 67
F-5 Spiral Bevel Gear 6.67 *5.14 or 5.83 596 ~ 67
F-5 C.Il. Spiral Bevel Gear 6.67 *5.14 or 5.83 23 67
65 6"
F -5 ScUu Spiral Bevel Gear 6.67 *5.14 or 5.83 59 !i4 67
F -6 Hypoid Gear 7.2 *6.2 or 6.8 58 2?i'z 67
F-6 C.I.E. Hypoid Gear 7.2 *6.2 or 6.8 64;{6 67
F-6 sa. lis Spiral Bevel Gear 6.67 *5.14 or 5.83 58 2%2 67
F-7 Hypoid Gear 7.2 #6.8 66 2%J 6931
F-8 Spiral Bevel Gear 7.17 t6.5/ 8.87 65 1l{6 71 %,
*OptIonal 2-Speed Planetary Axle available WIth ratios of: 5.83/8.11 or 6.33/8.81.
tsemi-Floating, all other. are Full Floating. ~2 -Speed Axle.
HOptional 2-Speed Planetary Axle available with ratio of 6.5/9.04.

83
Car Manuals Direct
2. TRANSMISSION TYPES AND RATIOS. ~
3-SPEED 4-SPEED S-SPEED
114~avy Jleuoy SYllchro .. Dire~t
Remote Huly Uuly Cenle. Silent Over- In
Type Shifl Center Remote Shift Center Hrivc Fifth
USAGE
F-l Std. Opt. Opt.
F-2 Std. Opt.
F -3 Std. Opt. t'\
::r-
F-3 Par. Del. Std_
.g
F-4 and F -5
F -SCOE,F-5 S. Bus
Opt.
Opt.
Std_
Std.
Opt.
Opt. ..
CD

t-
F-6,cF=6" COE Std_ Opt.*
F:-i Std. Opt.
F-8 Opt. Std.
GEARS
RATIOS 1st 2.78 3.714 3.714 6;400 6;400 6;060 7.580 ;;
1\
2nd 1.62 1.871 1.871 3 .090 3.090 3.500 4.380 Q

3rd 1.00 1.000 1.000 1.690 1.690 1.800 2;400 Cr

::s
4th 1.000 1.000 1.000 1;480 III
5th 0.7990 1.000
Rev. 3.63 4.588 4.588 7.820 7.820 6.000 7_51
Helical Gears All 2nd-3rd 2nd-3rd 2nd,3rd,4th 3rd,4th,O.D . 3rd,4th,5th
Spur Gears 1st-Rev. 1st-Rev. All 1st-Rev. Ist,2nd,Rev. 1st,2nd,Rev.
Synchronizers 2nd-3rd 2nd-3rd 2nd-3rd 2nd,3rd,4th
Lub. Cap. (Pts.) 2% 571 571 5
.;Standard with 254 cu. in., 6-cylinder Engine in F-6 and F-6 C.O.E.
8 811 871

Car Manuals Direct

 Section 3-Load Capacity Chart 85

3. LOAD CAPACITY AND TIRE PRESSURES.

Load
Capacity Tire Pres. Lbs
Wheel Ti~e Size and Per Tire
Serie. Base Ply Rating Lbs. Front Rear
F·l 114" 6.00 X 16-4 PT 915 28 28
6.00 X 16·6 PT 1065 36 36
6.50 X 16·6 PT 1215 36 36
6.50 X 16· 6 PT 1215 36 36
F·2 122" 7.00 x 16·6 PT 1395 36 36
7.00 X 16·6 1440 45 45
7.50 X 16·6 PT 1560 36 36
7.50 X 16·6 16S0 4S 45
7.50 X 16·8 1860 55 55
7.00 X 17·6 1575 45 45
F·3 122" 7.00 X 17·8 1775 5S 55
7.50 X 17·8 2100 60 60
7.00 X 16·6 1440 45 45
F·3 104" 7.50 X 16·6 1650 45 45
Parcel 122" 7.50 X 16·8 1860 55 55
DeilY'
ery 7.00 X 17·6 1575 45 45
7.50 X 17·8 2100 60 60
6.50 X 20·6 1700 50 50
F·4 134" 7.00 X 20·8 2000 55 55
7.00 X 18·8 D 1850 5S 55
6.50 X 20·6 D 1700 50 55
6.50 X 20·8 D 1950 t 65
F·5 and 15S" 7.00 X 20·8 D 2000 55 55
F·5, 176" 7.00 X 20·10 D 2250 t 70
C.O.E. 7.50 X 20·8 D 2375 60 60
7.50 x 20·10 D 2700 t 75
*8.25 x 20· 10 2900 65 65
F·5 158" 6.50 x 20·6 D 1700 50 50
Schill Ius 7.00 x 20~8 D 2000 55 55
7.50 x 20·10 2700 t 75
PT-Panenier Car Type Tire-Other. Truck Type.
D-Dual Rear Tire •.
*Optional Rear Tires for F·S with 2.Speed Rear Axle.
tHish pre•• ure tires not recommended for front wheels , The above tire
inflation pre.aure. are based on trucka with normal loading. Where overloadini,
odd load distribution, or liiht load. occur, the tire load inflation chart. available
at loce! Ford dealers and Tire Distributors should be consulted.
(Cont'd)

Car Manuals Direct

86 Chapter VI-Specifications

3. LOAD CAPACITY & TIRE PRESSURES (Cont.)

Load
Capacity Tire Pres. Lbs
Wheel Rear Tire Size and Per Tire
Series Base Ply Rating Lb•. Front Rear
F-6 194" 7.50 X 20-8 D 2375 60 60
SOIl'11S 7.50 X 20-10 2700 t 75
8.25 X 20-10 D 2900 65 65
F-6 and 110" 7.50 X 20-8 D 2375 60 60
F-6. 134" 7.50 X 20-10 D 2700 t 75
C.O.E. 158" 8.25 x 20-10 D 2900 65 65
176" 8.25 x 20-12 3150 t 75
135" 8.25 x 20-10 D 2900 65 65
147" 8.25 x 20-12 D 3150 t 75
F-7 159" 9.00 x 20-10 D 3450 65 65
178" 9.00 x 20-12 D 3850 t 80
195"
135" 9.00 x 20-10 D 3450 65 65
147" 9.00 x 20-12 D 3850 t 80
F-8 159"
178"
195" 10.00 x 20-12 D 4000 70 70
D-Dual Rear Tires.
tHiAh pressure tires not recommended for front wheels. The above tire
inflation pressures are based on trucks with normal loading, Where overloading,
odd load distribution, or light loads occur, the tire load inflation charts available
at local Ford dealers and Tire Distributors should be consulted.

4. WHEEL ALIGNMENT.
King Pin
Model Calter· Camber# Toe-In Inclination

F-l. F-2. F-3 2%0 to 4~0 ~o to 1 0 0" to J{6" 80 == ~o

F-4. F-5. F-6 1 0 to 3%0 ~o to 1 0

0" to J{6" 8~o
== ~o

~11 Others 1 0 to 3 0 ~o to 1 0 0" to J{6" 80 == ~o

*Maximum Variation Between Wheels )10. On F-2 and F-3 without Caster Wedge
Caster limits are ("'- }1i0 to 1 )10).
#Maximum Variatipn Between Wheels ~o.
Car Manuals Direct
5. ENGINE, IGNITION, FUEL SYSTEM AND COOLING SYSTEM.
~ Engines are identified as follows: "e"-21S eu. in. 6-cy1.; "J"-279 ell. in.
8-cyl.; "K"-317 cu. in. 8-eyl.; "M"-,2S4 eu. in. 6-cyl.; "R"-239 eu. in. 8-cyl.
a. Engines. iCr
:a
F-I THROUGH F-6
F-6Only
R
F-7 F-8

K
Qt:a
:a
C M J Q.CO
S·
rrype t\

!Bore (Inches)
6-cyl.

3.56
6-cyl.

3.5
V-890°

3.1875
V-890°

3.56 ,3 .80 Q
--
S ~It
S·CO
:!.
~troke (Inches) 3.6 4.4 3.75 3.5 3.5 1_
'" :!".
,,<0 ~:a

It ...
Displacement (cu. in.) 215 254 239 279 317 :I c
!.
145 1.55
Max. Brake H.P.
at specified R.P .M.

lNet H.P.at
101 @3500

91 @3400
112 @3500

101 @3200
106 @3500

96 @3400
@
3800

128
@
@
3900

141
@
1
specified R.P.M. 3600 3500
,-
~--- - -- -- - - - - -- -

(Coot'd) ...
co

Car Manuals Direct

 , 8. Engines (Cont.) ~

F-l THROUGH F-6 F-7 F-B

F-60nly
C M R J K

244 @ 284@
Max. Torque ft . Ibs. 185 @ 217 @ 194 @ 1900 to 1700 to n
::r
at specified R.P.M. 1300 to 1700 1400 to 1700 1900 to 2100 2100 2000 Q

~et Torque (ft. Ibs.) 183 @ 212 @ 189@

236 @ 276 @
1700 to 1600 to
.
:
at specified R.P.M. 1200 to 1700 1200 to 1500 1700 to 2000 2100 1900 ~
I
~ompression Ratio _

~alve Lifters
7.0 to 1
Adjustable
6.8 tol
Adjustable
6.8 to 1
Pre-set
7.0 to 1
Adjustable
'1
'ft
:;;
Valve Clearance Intak~
(cold) (Inches)
0.013 to oms 0.009 to 0.011 0.013 to 0.015 0.010 ..Bo·
:.
fExhaust (Inches) 0.015 to 0.017 0.014 to 0.016 0.017 to 0.019 0.020
'"
~ompression Pressure 130 @ 110 110 @ 60 110 @ 90 115 @ 90
(P.S.I.) at Cranking
Speed
~ormal .Oi1 Pressure 45 @ 2000 SO @ 2000 57 @ 2000 40 to 44
(P.S.!.) at specified @2000
R.P.M.

Car Manuals Direct

 \
Section 5-Engine, 'gnition, Fuel System,
and Cooling System 89

h. Ignition, Fuel System and Cooling System.

6-c)'I. 6-cyl. 8it l • 8 -c),1 .
C M J K

Ignition
Firing Order 1-5-3-6- 1-5-3-6- 1-5-4-8- 1-5-4-8-
2-4 2-4 6-3-7-2 6-3-7-2
0 0
Initial Timing 2° BTC TDC 2° BTC 10 :1] 6
BTCBTC
Maximum Total 29°_ 0
1872 0- 22 °_ 32 0 _
Advance 31 72 0 20 72 2472
0
34 72 0
AtW.O.T.
Breaker Contact 0.024 to 0.024 to 0.014 to 0.014 to
Spacing (Inches) 0.026 0.026 0.016 0.016
Breaker Ann Spring 17 to 20 17 to 20 17 to 20 17 to 20
Tension (OZ8.)
Spark Plug Size 14mm 14 mm 14mm 14mm
Spark Plug Gap 0.025- 0.025- 0.025- 0.025-
(inches) 0.028 0.028 0.028 0.028

Fuel System
Single Single Dual Dual
Carburetor Down- Updraft Down- Down-
draft draft draft
Idle Fuel Adjustment 1 screw 1 screw 2 screws 2 screws
Fuel Pump
Pressure (P.S.I :) 4 to 5 4 to 5 3.5 to 4.5 3.5 to 4.5

Cooling System
Thermostat * l48° to 148 0 to l48 ° to 148 0 to
Starts to Open 153 0 153 0 153 0 153 0
Thermostat * 168 0 to 168 0 to 168° to 168 0 to
Fully Open 173 0 173 0 173 0 173°
Fan 4 blade 4 blade 4 blade 4 blade
*Stanclarct Thermostat. only.
Car Manuals Direct
90 Chapter VI-SpeciIJcations

6. ELECTRICAL (EXCEPT IGNITION).

a. Generator.
'IYPe ..... Belt driven, air cooled, 2-brush shunt wound
Capacity .. All except F-7, F-8, 35 amps, 250 watts, 7.1
volts; F-7, F-8, 40 amps, 285 watts, 7.1 volts

b. Generator Regulator.
Voltage ~egulation* ................. 7.2 to 7.6 volts
Current Limitation, F-Ithrough F-6 .... 34 to 38 amps.
Current Limitation, F-7, F-8 ........... 38 to 42 amps.
Cutout closing voltage* .............. 6.0 to 6.6 volts
*Volt..., .ettinp are for reau!ator at normal operatinc temperature in 75· F.
aurroundinc air temperature.

c. Battery.
'tYpe:
F-l, F-2, F-3, F-3 Par. Del.,
and F -4 •............... 15 prate- 90 ampere hour
F-S, F-5 C.O.E., F-6,
F-6 C.O.E. .............. 17 plate-IOO ampere hour
F-7, F-8, and Schoolbus ..... 17 plate-l 20 ampere hour

.
Ground ................................. Positive
Car Manuals Direct
 Section 7 -Brokes 91

7. BRAKES.
a. Service Brakes (Hydraulic).
Pedal free travel ........................ 1/4 to 1h in.
Lin- Ma8-
iilg ter Wheel
Area Cyl. Brake Lin. Cyl.
(Sq. Dia. Size Thk. Dla.
Truck In.) (In8.) (Inches)' (Ina.) (In8.) Type and Adjust.

F-l 178 IH6 F-ll x2 ~ 1116 Single Anchor,

R-ll x 1~ YJ6 1 Star Wheel
between Shoes
F-2& 196 174 F-12 x2 ~ lYs Single Anchor,
F-3 R-12 x 2 ~ lYs Star Wheel
between Shoes
F-3 205 1~ F-13Ys x 2 ~ 1% Double Anchor
Par. R-12 x 2 ~ lYs and Cams, Frt.
Del. Single Anchor,
Star Wheel
between Shoes,
Rear.
F-4 302 1~ F-14 x 2 ~ 1~ Double Anchor,
5,6* R-15 x 3~ %; 1~ and Cams
F-7** 444 1~ F-16 x 2~ ~ 1~ Double Anchor,
and Cam, Frt.
R-15 x 5 % 1% Dbl. Cyl., Allen
Screw, Rear
F-S** 485 1~ F-16 x 2~ ~ 1~ Double Anchor,
and Cam. Frt.
R-16 x 5 % l~ Db!. Cyl., Allen
Screw, Rear
#NOTE: First filUl'e denotea brake drum inner diameter;
Last fi&u:re denotea brake liniDii width.
*Diaphralllll type vacuum booster 7 Yo in. effective diameter standard.
**Piston type v~cuum booster 9 Yo in. effective diameter .tandard.
F-Fr;.<>nt; R-Rear.

Car Manuals Direct

92 Chapter VI-Specifications

h. Service Brakes (Air).

Front Rear
Brake Size (In.) 16 x 274 16Yz x SYz
Brake Lining
Length per Shoe (In.) 16%: 8.7 (per block)
Width (In.) 274 SYz
Thickness (In.) %; %:
Brake Chamber
Type E B
Overall Dia.-(In.) 6 9:j{6
Effective Area (Sq. In.) ....... 9 24
Adjust when Stroke is (In.) 1% I%:
Adjust Stroke to (In.) % %:

c. Air Compressor.

1)rpe ...................... 2-cyl. water cooled

Bore & Stroke (In.) .................. 2/6 X 1 %
Capacity ..•.... 71;4 cu. ft. per min. at 1250 R.P.M.
Oil Capacity .......................... 1 pint
Oil ~pe ................... Same Oil as Engine
Air Compressor Unloader Valve
Clearance (In.) ................... 0.010-0.015
Air Compressor Governor
Cutout Pressure ................. 100-105 P.S.I.
Cut-in Pressure ................. 80-25 P.S.I.
Pressure Range 15-25 P.S.I .
•
Car Manuals Direct
 \
Section 8-Capacities 93

8. CAPACITIES.
a. Fuel Tanks.
Model Location (:apacity
All trucks with standard or Behind Driver's
C.O.E. Cabs Seat 20 gals.
F-1, F-2, F-3, & F-3 Par. Del. Inside Left
trucks except those with CABS Frame Rail 17 gals.
F-4, F-5, F-6, F-7, F-8 trucks Outside Left
except those with CABS Frame Rail 25 gals.
F -5, & F -6 Schoolbus Chassis Outside Right
Frame Rail 30 gals.

h. Engine Oil Pan, Cooling System, Rear Axle

and Transmission, and Fuel.
Jo.ng.
Truck Oil Cooling Rear
Series Pan# System.· Axle TranRmi88ion
(Qu.) (Qt8.) (Pu.) (Pt8.)
F-1 5 15 (6-cyl.) 3 2% (3-speed)
23 (8-cyI.) 5 (4-speed)
5Yz (3-speed H.D.)
F-2 5 15 (6-cyI.) 3 5 (4-speed)
23 (8-cyI.) 5Yz (3-speed H.D.)
F-3 5 15 (6-cyI.) 3 5 (4-speed)
23 (8-cyl.) 5Yz (3-speed H.D.)
F-3 5 15 3 5Yz
Par.
Del.
F-4 5 16 (6-cyI.) 5 5 (4-speed)
5Yz (3-speed H:D.)
23 (8-cyI.) 8 (4-speed Synchro-Silent)
F-5 5 16 (6-cyI.) 5t 5 (4-speed)
5Yz (3-speed H.D.)
23 (8-cyI.) 8 (4-speed Synchro-Silent)
F-6 5** 19~ (6-cyI.) lOt 5 (4-speed)
23 (8·cyI.) 8 (4-speed Synchro-Silent)
F-7 8 24% nt 8Yz
F-8 8 24% 22x 8Yz
#Add one qUllrt 011 when new filter 18 Installed. **M·engtne. 6 quarts.
*Add one quart if equipped with heater. tF·7, 2-Speed Axle Cap. 19 pints.
~l·s..and F-6, 2·SpeeQ Axle Cap. 15 pints. xF·8, 2·Speed Axle Cap. 20 pints.

Car Manuals Direct

94 Chapter VI-Specifications

9. GENERAL SPECIFICATIONS.
Fan and generator belt ........ 1fz inch deflection under
normal thumb pressure
Brake reservoir fluid level ............ 1fz inch from top
Brake pedal reserve. . . . . . .. not less than 1fz total travel
Brake pedal free travel ................. % to 1fz inch
Clutch pedal free travel
F-l thru F-6 ...................... Ills-llis inch
F-7 and F-8 ...................... 1%-1 % inch
(F-7, F-8) Governor no load cut-off ..•... at 3250 r.p.m.
Part Torque (ft. Ibs.)
F~I,
F-2, F-3, F-3 Par. Del................... 65-75
F-3, F-4, F-5, F-6 (with 2-Pc. Wheels) and
(F-7 and F-8 with Disc Wheels) ......... 400-500
F-7, F~8 Cast Wheel .................... 130-140
Front spring "U" bolt nuts
F-l, F-2, F-3, F-4, F-5, F,-6 ................ 108-125
F-5 C.O.E., F-6 C.O.E., F-7, and F-8 ......... 165-185
Rear spring "U" bolt nuts
F-l .................................. 108-125
F-2, F-3 .............................. 165-185
F-4, F-5, F-6, F-7, and F-8 ................ 285-310
Engine oil pan bolts ......................... 15-18
Steering gear to frame bolts .•................. 45-60
Steering gear arm 'nut ..................... 115-125
Cylinder head bolts ............•............ 65-70
Manifold bolts ............................ 25-30
Spark plugs .' .............................. 24-30
Car Manuals Direct
 NOlES

95
Car Manuals Direct
 WARRANTY
The Ford Motor Company warrant. all ,uch part. 01 new
automobiles, trucks and chassis, except tires, for a period 01
ninety (90) days from the date 01 original delivery to the pur-
chaser 01 each new vehicle or before such vehicle has been driven
4,000 miles whichever event shall first occur, as shall, under
normal use and service, appear to it to have been defective in
workmanship or material. This warranty shall be limited to
shipment, to the purchaser without charge, except for trans-
portation, 01 the part or parts intended to replace those ac-
knowledged by the Ford Motor Company to be defective. The
Ford Motor Company cannot, hOH1ever, and does not accept
any responsibility in connection with any 01 its automobiles,
trucks or chassis when ther have been altered outside 01 its
own factories or branch plants. II the purchaser shall u.e or
allow to be used in the automobile, truck or chassis, parts not
• made or ."pplied by the Ford Motor Company, then this
warranty shall become void. This warranty ill expres.ly in
lieu 01 all other warranties expre.sed or implied and all other
obligations or liabilitie. on the part 01 Ford Motor Company,
and no person including any dealer, agent, or representative
01 the Ford Motor Company is authori:red to make any repre-
sentation or .varranty concerning Ford Motor Company prod-
ucu on behall 01 the Company except to refer purchasers to
this warranty.
The Ford Motor Company reserves the right to make change.
in the design and changes or improvemenu upon its produc,.
without imposing any obligation upon itsell to install the .ame
upon its products theretofore manufactured.
Car Manuals Direct