INDEX

SPECIFICATIONS ............................................................................. 36-2

STRUCTURE AND OPERATION

1. Components and Parts ................................................................ 36-3
2. Parking Brake Lever .................................................................... 36-3
3. Parking Brake .............................................................................. 36-4

TROUBLESHOOTING ....................................................................... 36-5

ON-VEHICLE INSPECTION AND ADJUSTMENT

1. Adjustment of Parking Brake Shoe Clearance ............................. 36-6
2. Inspection and Adjustment of Parking Brake Lever ..................... 36-7

PARKING BRAKE CONTROL ........................................................ 36-10

PARKING BRAKE
<MANUAL TRANSMISSION> ...................................................... 36-14
<AUTOMATIC TRANSMISSION> ................................................. 36-16

36-1
SPECIFICATIONS
Item Specifications
Type Internal expanding type acting on propeller shaft
Brake
Operation type Mechanical cable type
Type Duo servo type
Brake drum I.D. mm {in.} φ190 {7.48} φ203.2 {8.00}
Parking brake
45 × 4.0 50 × 4.0
Lining width × thickness mm {in.}
{1.77 × 0.16} {1.97 × 0.16}

36-2
STRUCTURE AND OPERATION 36
1. Components and Parts

2. Parking Brake Lever

• Pulling the parking brake lever makes
the parking brake work, at which point
the ratchet pole engages with the
ratchet plate and the lever is locked.
• To release the parking brake lever,
slightly pull it up while pushing the re-
lease knob. This disengages the
ratchet pole from the ratchet plate, al-
lowing the parking brake lever to re-
turn to the released position.

36-3
STRUCTURE AND OPERATION
3. Parking Brake
3.1 Duo servo type <Manual transmission>

• The camshaft lever, which is used to actuate the shoes/linings, is built into the parking brake unit. Pulling the park-
ing brake lever actuates the camshaft lever via the parking brake cable.
• Actuation of the camshaft lever causes the camshaft to rotate, which expands both shoes/linings onto the brake
drum. In this case, both shoes/drums function as a leading shoe.
• As the parking brake lever (camshaft lever) is released, the forces of shoe and camshaft lever return springs re-
store the components to their home positions. This releases the parking brake.

3.2 Duo servo type

• The parking lever that actuates the shoe and lining is a built-in component of the parking brake body. Pulling the
parking brake lever pulls the parking brake cable, which in turn pulls the parking lever.
• When the parking lever is pulled, one shoe and lining is forced to expand with the medium of strut. At the same
time, the parking lever directly expands the other shoe and lining. Thus, each shoe and lining assembly works as
a leading shoe.
• When the parking brake lever (parking lever) is returned to the released position, the repercussive force of the
shoe return spring releases the brake.

36-4
TROUBLESHOOTING 36
Symptoms

Parking brake lever operating physical

Parking brake lever operating physical

Parking brake release not smooth
Parking brake does not work
Reference
Gr

force insufficient

force excessive
(dragging)
Possible causes
Inner cable stretched or damaged O O O O
Inner cable improperly adjusted O O O O
Parking brake cable Front parking cable and rear parking cable improperly
O O O O
connected
Front parking cable and rear parking cable joints in poor
O O O O
contact
Ratchet pole and ratchet plate pawl engaged improperly O
Parking brake lever Pulling stroke insufficient O O
Pulling stroke excessive O O
Shoe clearance insufficient O O
Shoe clearance excessive O O
Parking brake drum inner surface deformed or warped O O
Lining worn unevenly O O
Parking brake Brake drum inner surface greasy or oily O
Lining surface greasy or oily O
Camshaft lever return spring fatigued or fractured
O
<Manual transmission>
Shoe return spring fatigued or fractured O

36-5
ON-VEHICLE INSPECTION AND ADJUSTMENT
1. Adjustment of Parking Brake Shoe Clearance
Service standards (Unit: mm {in.})
Location Maintenance item Standard value Limit Remedy
Manual transmis- 0.1 to 0.25
–
sion {0.0039 to 0.0098}
– Brake shoe clearance Adjust
Automatic trans- 0.2 to 0.25
–
mission {0.0079 to 0.0098}

• Chock the front wheels and raise the rear wheels with a jack be-
fore adjusting the shoe clearance.
• Operate the parking brake lever to release the parking brake.
(The parking lever or camshaft lever is released from locking.)
• Using a standard screwdriver inserted through the shoe adjust-
ing hole in the parking brake drum, turn the adjusting screw in
the C direction (expansion) shown to bring the shoe into close
contact with the brake drum.
• Turn the adjusting screw 8 notches in the B direction (contrac-
tion) shown from the position where the shoe is in close contact
with the drum. The shoe clearance should be adjusted to the
standard value.

36-6
 36
2. Inspection and Adjustment of Parking Brake Lever
Service standards
Location Maintenance item Standard value Limit Remedy
Parking brake lever pulling stroke (with operating physi-
– 7 to 9 notches – Adjust or inspect
cal operating of 300N {67 lbs, 31 kgf})

Tightening torque (Unit: N·m {ft.lbs, kgf·m})

Mark Parts to be tightened Tightening torque Remarks
– Lock nut <Automatic transmission> 18.7 to 27.5 {14 to 20, 1.9 to 2.8} –

Lubricant and/or sealant

Mark Point of application Specified lubricant and/or sealant Quantity
Camshaft lever (on sliding face with parking brake cable
Chassis grease
– and on contact face with ball bushing) <Manual transmis- As required
[NLGI No. 1 (Li soap)]
sion>

[Inspection]
• Pull the parking brake lever from the released position with an
operating physical force of 300N {67 lbs, 31 kgf} and count the
number of cleared notches.
• If the count of notches deviates from the specified range of stan-
dard values, adjust the length of the parking brake cable.
• If the count of notches (pulling stroke) is still out of the specified
range after cable length adjustment, check the parking brake
shoe clearance.

[Adjustment]
<Manual transmission>
• Pull on the parking brake cable end with a force of 100 N {22 lbs,
10 kgf} to remove any slack from the cable.
• Apply grease onto the camshaft lever, on the sliding face with
the parking brake cable and on the contact face with the ball
bushing.
• While pulling the cable end of the camshaft lever in the direction
of the arrow with a force of 45 to 50 N {10 to 11 lbs, 4.6 to 5.1
kgf}, rotate the ball bushing until it contacts the cable end of the
camshaft lever.
CAUTION
• Do not rotate the ball bushing so much as to cause the cam-
shaft lever to move.

• Pull the parking brake lever 3 times with a force of 500 N {110
lbs, 51 kgf}.
• This operation causes the cable to extend. Rotate the ball bush-
ing again until it contacts the camshaft lever. Then, pull the park-
ing brake lever with a force of 45 to 50 N {10 to 11 lbs, 4.6 to 5.1
kgf}. The camshaft lever should not move more than 1mm
{0.039 in.}.

36-7
ON-VEHICLE INSPECTION AND ADJUSTMENT
• Pull the parking brake lever from the released position with a
force of 300 N {67 lbs, 31 kgf}. The lever should travel past the
specified number of notches. Tighten the nut.

<Automatic transmission>
• Pull the outer cable of the parking brake cable with a force of 60
to 100 N {13 to 22 lbs, 6.1 to 10 kgf} to zero the parking brake
shoe clearance.
CAUTION
• When pulling the outer cable, take care not to move heat in-
sulator on the parking brake cable out of place.

• While pulling the parking brake cable, tighten the adjust nut until
it seats the cable support end.
• Lock the adjust nut with the lock nut.
• Operate the parking brake lever several times with the force of
500 N {110 lbs, 51 kgf}.
• Pull the outer cable of the rear parking brake cable again with
the force of 60 to 100 N {13 to 22 lbs, 6.1 to 10 kgf}.
CAUTION
• When pulling the outer cable, take care not to move heat in-
sulator on the parking brake cable out of place.

• Holding the parking brake cable in the pulled state, turn the ad-
justing nut until its distance from the casing cap becomes 3 to 5
mm {0.12 to 0.20 in.} as shown in the illustration.
• Return the parking brake cable to the original position.
• Tighten the lock nut to the specified torque.

36-8
 36
M E M O

36-9
PARKING BRAKE CONTROL

Removal sequence
1 Push nut 7 Front parking brake cable
2 Push turn rivet <Automatic transmission>
3 Cover 8 Ball bushing <Manual transmission>
4 Parking brake switch 9 Parking brake cable <Manual transmission>
5 Parking brake lever Rear parking brake cable
6 Cap <Automatic transmission> <Automatic transmission>

Installation sequence
Follow the removal sequence in reverse.

CAUTION
• Perform the adjustment of the parking brake lever after installation. (See ON-VEHICLE INSPECTION and
ADJUSTMENT)

36-10
 36
Tightening torque (Unit: N·m {ft.lbs, kgf·m})
Mark Parts to be tightened Tightening torque Remarks
Nut (parking brake cable attaching) 4 to 6 {3.0 to 4.4, 0.4 to 0.6} –
Bolt (parking brake lever mounting)
12 to 15 {8.9 to 11, 1.2 to 1.5} –
Bolt (parking brake cable attaching)
Rear parking brake cable to front parking brake cable
62.5 ± 7.5 {46 ± 5.5, 6.4 ± 0.8} –
connection <Automatic transmission>
Bolt (parking brake cable attaching)
19 to 28 {14 to 21, 1.9 to 2.9} –
<Manual transmission>

Lubricant and/or sealant

Mark Point of application Specified lubricant and/or sealant Quantity
Contact surfaces of parking brake lever
Chassis grease
Spherical face of ball bushing As required
[NLGI No. 1 (Li soap)]
<Manual transmission>

Removal procedure
Removal: Front parking brake cable <Automatic transmis-
sion>
• Loosen the nut connecting the front and rear parking brake ca-
bles, then separate the front parking brake cable case from the
rear parking brake cable.
• Remove the cap and pull out the clevis from the front parking
brake cable case and remove it at the steps of 1, 2 and 3 in that
order as shown.

36-11
PARKING BRAKE CONTROL
Installation procedure
Installation: Front parking brake cable or parking brake ca-
ble
• Connect the front parking brake cable to the rear parking brake
cable by following the removal procedure in reverse. <Automatic
transmission>
• Attach the parking brake cable to the parking brake lever by fully
tightening nut A, then tightening nut B to the specified torque.

CAUTION
• Cable bending radius must be at least 100 mm.
• The cable must not be bent at clamped portions.
• There must not be torsion in the boot.
• Avoid any interference with other components when routing
the cable.

Installation: Cap <Automatic transmission>

• Attach the cap to the clevis of the rear parking brake cable from
the direction shown in the illustration.
• Fit the cap into the clevis all the way so that the flange of the cap
comes out at the other side of the clevis.

36-12
 36
M E M O

36-13
PARKING BRAKE <MANUAL TRANSMISSION>
Disassembly sequence
1 Shoe return spring
2 Anchor pin brace
3 Adjust wheel return spring
4 Adjust screw
5 Shoe & lining
6 Camshaft lever return spring
7 Support plate & dust cover

Assembly sequence
Follow the disassembly sequence in re-
verse.

CAUTION
• To prevent poor working of the brake, do not smear the surface of shoe and lining with grease or oil.
• When the shoe and lining has been replaced with a new one, always check it for contact with the parking
brake drum.

NOTE
• Refer to Gr22 for parking brake removal and installation procedures.

Service standards (Unit: mm {in.})

Location Maintenance item Standard value Limit Remedy
145 ± 15 N 115 N
Shoe return spring installed load (installed length: 57.5
1 {33 ± 3.3 lbs, {26 lbs, Replace
{2.26})
15 ± 1.5 kgf} 12 kgf}
63 N
Adjust wheel return spring installed load (installed 78 ± 7.8 N
3 {14 lbs, Replace
length: 59 {2.32}) {18 ± 1.8 lbs, 8 ± 0.8 kgf}
6.4 kgf}
1.4
5 Brake lining thickness 4.0 {0.16} Replace
{0.055}
62 ± 5.9 N 49 N
Cam shaft lever return spring installed load (installed
6 {14 ± 1.3 lbs, {11 lbs, Replace
length: 85 {3.35})
6.3 ± 0.6 kgf} 5.0 kgf}

Lubricant and/or sealant

Mark Point of application Specified lubricant and/or sealant Quantity
Adjust screw ends’ contact faces with shoe & lining
Contact faces between support plate, camshaft and shoe
& lining Brake grease (AKB100) As required
Contact faces between support plate, anchor pin and
shoe & lining
36-14
 36
Inspection procedure
Inspection: Brake lining thickness of shoe and lining
• If the measured value is lower than the limit, replace the shoe
and lining.

36-15
PARKING BRAKE <AUTOMATIC TRANSMISSION>
Disassembly sequence
1 Shoe return spring
2 Washer
3 Strut spring
4 Shoe holddown cup
5 Shoe holddown spring
6 Shoe holddown cup
7 Shoe holddown pin
8 Adjuster
9 Adjuster spring
10 Strut
11 Retainer
12 Shoe and lining
13 Parking lever
14 Backing plate

*a: Retainer
: Non-reusable parts

Assembly sequence
Follow the disassembly sequence in re-
verse.

CAUTION
• To prevent poor working of the brake, do not smear the surface of shoe and lining with grease or oil.
• When the shoe and lining has been replaced with a new one, always check it for contact with the parking
brake drum.

NOTE
• Refer to Gr23 for parking brake removal and installation procedures.

Service standards (Unit: mm {in.})

Location Maintenance item Standard value Limit Remedy
58.8 ± 5.9 N 49 N
Installed load of shoe return spring
1 {13 ± 1.3 lbs, {11 lbs, Replace
(installed length: 67.1 {2.64})
6.0 ± 0.6 kgf} 5.0 kgf}
29.4 ± 2.9 N 26 N
3 Installed load of strut spring (installed length: 49 {1.93}) {6.6 ± 0.7 lbs, {5.8 lbs, Replace
3.0 ± 0.3 kgf} 2.7 kgf}
78.5 ± 7.9 N 71 N
Installed load of shoe holddown spring
5 {18 ± 1.8 lbs, {16 lbs, Replace
(installed length: 15.5 {0.61})
8.0 ± 0.8 kgf} 7.2 kgf}
58.8 ± 5.9 N 49 N
Installed load of adjuster spring (installed length: 78.2
9 {13 ± 1.3 lbs, {11 lbs, Replace
{3.08})
6.0 ± 0.6 kgf} 5.0 kgf}
12 Brake lining thickness of shoe and lining 4.0 {0.16} 1.4 {0.053} Replace

36-16
 36
Lubricant and/or sealant
Mark Points of application Specified lubricant and/or sealant Quantity
Adjuster ends in contact with shoe and lining
Backing plate anchor pin and surface in contact with Brake grease (AKB100) As required
shoe and lining

Inspection procedure
Inspection: Brake lining thickness of shoe and lining
• If the measured value is lower than the limit, replace the shoe
and lining.

36-17