HYDRAULIC CHARACTERISTICS AND

10 SPECIFICATIONS
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 HYDRAULIC SCHEMATIC DIAGRAMS

pages

ME 315 / 316 / 318 / 320 SERIES 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2

– KEY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
– HYDRAULIC DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

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 2 HYDRAULIC SCHEMATIC DIAGRAMS

ME 315 / 316 / 318 / 320 Series 2 KEY

Item Designation
CA Suction strainer
D 3 component distributor
EA Attachment component
EAV Front axle
EAR Rear axle
EDL Side-shift component
EE Inlet element
EI Tilting element
EL Lifting element
DD Steering system
FR Return filter
Pump electric motor
MP Power (ME425) 11 kW
Power (ME430) 12,8 kW
Hydraulic pump
P Capacity (ME425) 16 cm3/rev.
Capacity (ME430) 20 cm3/rev.
R Hydraulic tank
RD Flow reducer
V Steering wheel ( Ø 350 )
VD Steering cylinder
VDDP Priority flow divider valve
VI Tilting cylinder
VL Lifting cylinder
TLL Triple mast with free-acting lift
DVT Double mast with all-round vision
VDL Side-shift cylinder
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1,5T / 2T MASTS

DVT DLL TLL

Distributor calibration
Side cylinders

Ø rod Ø 35 Ø 32

Body Ø int. Ø 45 Ø 45

Reducer flow rate ± 10%

cylinders

Ø rod Ø 70
acting
lifting
Free

Body Ø int. Ø 80

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 HYDRAULIC SCHEMATIC DIAGRAMS 3

HYDRAULIC DIAGRAM ME 315 / 316 / 318 / 320 Series 2

VL

TLL DVT

VI

RD RD RD
VCD VDL
A1
A1
A1

FT

A1 A2 B2 A3 B3 A4 B4
D
62l/min
T

T
P
155b 1T5
180b 1T6 0 2T

EE EL EI EDL EA

OPTION OPTION

L
FT
125cm3
V R
EAV
10

70
DD
190b
EAR
T LS P

LS CF EF
VDDP
VD

FT
250b
P MP
M
FT
FR

CA
R

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 4 HYDRAULIC SCHEMATIC DIAGRAMS
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 HYDRAULIC COMPONENTS LOCATION

pages

– POSITION OF OTHER HYDRAULIC PARTS.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

– CONTROL DISTRIBUTOR COMPONENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

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 2 HYDRAULIC COMPONENTS LOCATION

POSITION OF OTHER HYDRAULIC PARTS.

O-ring

Inlet filter collar

Nuts: 4 - M6x16 Fill here
Tightening torque: 8 to 10,2 Nm

Replace the O-ring seal

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Breather To the lifting cylinder

each time it is removed.

Seal

Oil tank

Screw: 12-M6x12
Tightening torque: 8 to 10,2 Nm

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 HYDRAULIC COMPONENTS LOCATION 3

CONTROL DISTRIBUTOR COMPONENTS

Side-shift lever
Tilting lever
Lifting lever

Case rod

Return spring

Return
spring

70
Distributor
Pump motor
ON/ OFF
switch.

Lift the rod, then tilt it to open the battery cover; otherwise the cover will
obstruct the handle of the control distributor lever.

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 4 HYDRAULIC COMPONENTS LOCATION
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 HYDRAULIC CONTROL AND ADJUSTMENT

pages

HYDRAULIC PIPING DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2

REMOVING THE PUMP MOTOR AND PUMP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
REMOVING THE OIL PUMP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
– PRECAUTIONS FOR FITTING AND USE (PUMP). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
– EXPLODED VIEW OF THE OIL PUMP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
CONTROL BLOCK DIS-ASSEMBLY. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
STEERING COLUMN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
STEERING CIRCUIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

70
REAR AXLE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

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 2 HYDRAULIC CONTROL AND ADJUSTMENT

HYDRAULIC PIPING DIAGRAM

Description:

The oil under high pressure goes from the main pump to the distributor, then towards the lifting or the
tilting cylinder. When the lifting or tilting cylinder spool is in the neutral position, the lifting pump is at
rest. Pulling on the lifting spool causes the high pressure oil to enter the bottom of the lifting cylinder,
then pushes on the piston rod while the translation movement is performed. When the lifting spool
is pushed, the bottom of the lifting cylinder connects to the low pressure line, and the piston rod is
lowered under the effect of the counterweight and the weight of the load. At that moment, the oil goes
from the lifting cylinder through the unidirectional flow reducer to control the rate of decent and to
place the lifting pump at rest. While the tilting spool is in operation, one chamber of the tilting cylinder
is connected to the high pressure line and the other to the low pressure line to tilt the mast backwards
or forwards.

This hydraulic circuit uses the LS UNIT AND PRIORITY VALVE technology. The application presents the
LS circuit, the priority valve with steering unit is called a BOPV. The complete system comprises an LS
unit and priority valve. When the steering wheel is turned, the LS port transfers the pressure signal to
the priority valve, then pushes the priority spool to transfer oil to into the steering unit circuit so that
it can start to operate. If the steering wheel is not turned, the spool of the priority valve shifts and the
steering circuit stops. When the steering unit operates, the oil from the priority valve passes into the
rotor pump unit via a sleeve spool. At the same time, the star will turn with the steering wheel. The oil will
enter the L or R port, then push the piston, and the steering wheel moves. The other lateral piston drives
the return oil towards port T of the steering unit to return the oil to the oil tank, completing one cycle.
70

HYDRAULIC HOSE DIAGRAM Hydraulic motor

Oil tank Oil filter

Lifting cylinder

Steering cylinder

Distributor

Switch

Tilting cylinder
Pump motor Pump

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 HYDRAULIC CONTROL AND ADJUSTMENT 3

REMOVING THE PUMP MOTOR AND PUMP

1 - Remove the floor mat and the floor plate.

Brake pedal 2 - Disconnect the pump motor connection
cable.
3 - Remove the brake pedal control assembly
from the frame.
4 - Disconnect the oil pump inlet and outlet
hoses.
5 - Disconnect the other oil hoses.
6 - Loosen the motor fastening screws and
straps.
7 - Attach a hoist ring to the pump motor
and lift the pump/motor assembly.
8 - To remove only the pump, undo the two
screws attaching it to the motor and then
remove the pump from the motor.

2-M10x30
screws

Oil hose
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Hoist attachment
hole

Fastening screw
and strap

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 4 HYDRAULIC CONTROL AND ADJUSTMENT

REMOVING THE OIL PUMP

1 - When removing the pump, clean the surface of the pump and the drive shaft. Set the dismantled
components down on a clean cloth or sheet of paper. Take care not to stain, scratch or damage
the components.
2 - Secure the pump in a vise with the pump's mounting flange facing downwards. Cover the jaws of
the vise with a soft material, such as a piece of wood, an aluminum or copper plate.
3 - Remove the hexagonal head bolts and the clamping washers.
4 - Remove the casing by pulling it straight off along its axis. Tap with a wooden mallet if it is difficult
to remove. Remove the flat seals and the anti-extrusion ring.
5 - Remove the pressure plate. This can be easily removed by slightly lifting the drive sprocket / driven
gear shaft.
6 - Mark the ends of the sprocket shaft and the driven gear, then remove the gears.
7 - Remove the pressure plate from beneath the gear plate, taking care not to tilt the pressure plate.
8 - Before removing, mark the gear plate to identify the cover side and the mounting flange side of
the gear plate.
9 - Remove the seal and the anti-extrusion ring from the mounting flange. Remove the circlip, followed
by the oil seal. Remove the seal by passing it from the inside with the help of a standard screwdriver.
Take care, during this operation, not to damage the connection port or the oil seal bearing port.
10 - Set down the dismantled components in such a way that their original location and orientation
can be easily understood.

PRECAUTIONS FOR FITTING AND USE (PUMP)

1 - Before starting-up, carefully check the oil ports a,d ensure that the direction of rotation of the
pump matches that shown on the label, otherwise damage will occur.
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2 - Use a flexible coupling between the shaft and the pump drive. Out-of-alignment must not exceed
0,1 mm.
3 - The pump shaft must offer no resistance along its axis or under radial force. Mount the pump with
care to avoid damage.
4 - The suction head must be less than 0,5 mm.
5 - The oil port flange must not be damaged. The inlet seal must be well sealed to prevent any intake
of air that could cause noisy vibrations, air bubbles and a loss of volumetric efficiency.
6 - The inlet pipe must be such that the speed of the fluid circulating within it is less than 1,5 m/s.

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 HYDRAULIC CONTROL AND ADJUSTMENT 5

EXPLODED VIEW OF THE OIL PUMP

PUMP COMPONENTS

1 - Locking ring
2 - Shaft seal (2)
3 - Front casing
4 - Seal 1 (2)
5 - Seal 2 (2)
6 - Seal 3 (2)
7 - Drive gear

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8 - Driven gear
9 - Body
10 - Bearing (2)
11 - Plug (4)
12 - Rear casing
13 - Flat washer (4)
14 - Spring washer (4)
15 - Socket head screw (4)

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 6 HYDRAULIC CONTROL AND ADJUSTMENT

CONTROL BLOCK DIS-ASSEMBLY

Safety valve
Using a wrench, undo the safety valve unit from the valve housing.

Comment:
If the safety valve is faulty, replace as a complete unit.
Clean the inside of the distributor before reuse.

Main safety valve pressure adjustment

The main safety valve pressure is already set in the factory and does not, therefore, generally require
adjustment.

Pressure adjustment procedure based on the example of a 1,6 T vehicle.

1 - Place 125% of the rated load (2000 kg) securely on the fork.
2 - Apply the parking brake and stop the vehicle on flat, level ground. Pull the lifting lever. If the lift
truck can raise the load to a height of 300 mm, the safety valve is operating correctly. If not, adjust
as indicated in step 3.
3 - If the lift truck will not lift, increase the pressure of the main safety valve, remove the front shoe,
undo the main safety valve retaining nut. If the lifting height exceeds 300 mm, reduce the pressure
by turning the adjustment nut anti-clockwise.
4 - Check that the forklift truck can raise goods to a height of between 0 and 300 mm. If not, adjust
it as indicated in step 3.
5 - Re-tighten the retaining nut, refit the front shoe.
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WARNING
The load must be made stable. Do not alter the pressure if it is already correctly set.

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 HYDRAULIC CONTROL AND ADJUSTMENT 7

STEERING COLUMN

Bolt: M8x25
Pinion locking nut. T: 22 - 29 Nm Articulation

Steering
shaft Bearing seat supports

Apply grease to the bearings and shafts

before refitting the column.
Apply grease here!

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 8 HYDRAULIC CONTROL AND ADJUSTMENT

STEERING COLUMN

Splined shaft

M6x6 screw
T: 8,5 - 10,2 Nm

Bearing seat supports

Apply grease here!

70

Bracket

CHECK

After assembly:
1. Check that the splined shaft turns smoothly and without obstruction.
2. Check that there is a clearance of approximately 1 to 2 mm.

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 HYDRAULIC CONTROL AND ADJUSTMENT 9

Power-assisted steering system - Mounting the steering column on the front protection panel

PROCEDURE :

1 - Mount the column assembly on the front

protection panel of the vehicle (as shown
Screw and
in the figure of the left). Next, check the
clamping
force of the steering to ensure that it turns
washer
smoothly and does not stick. The steering
force at the wheel center button is of the
order of 9 to 12 N for an unladen vehicle
with power steering enabled.

2 - After mounting the steering column onto

the front protection panel, fit the steering
switch, the steering wheel, the dashboard
assembly, etc. onto the column support.

Locking Screw and

handle locking ring
on each side

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 10 HYDRAULIC CONTROL AND ADJUSTMENT

STEERING CIRCUIT

(Double super-elastic rubber guide wheel)

The steering shaft is produced by BORGHI IVAN of Italy.

This special steering shaft is widely used in three-wheel forklift trucks.

Characteristics

A - The design of the steering shaft is simple, but no less precise.

B - Made of one piece, with cast steel power-assisted steering pistons and housings, the J series FLT
three-wheel steering shaft ensures prolonged, smooth operation. The rack and pinion gearing is
immersed in oil to minimize wear.
C - The sealed system will never require lubrication or adjustment.
D - Its hinge-free design ensures that it is maintenance- and repair-free.
E - The closed system provides leak-free operation.
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Cross sectional view of the steering shaft

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 HYDRAULIC CONTROL AND ADJUSTMENT 11

REAR AXLE
Assembled

Disassembled axle

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 12 HYDRAULIC CONTROL AND ADJUSTMENT
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 HYDRAULIC COMPONENT SECTIONS AND
DIAGRAMS

pages

LIFTING CYLINDER (DOUBLE MAST, LEFT/RIGHT) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2

FREE-ACTING LIFTING CYLINDER (TRIPLE, MIDDLE). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
LIFTING CYLINDER (TRIPLE, LEFT/RIGHT)/ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
EXPLODED VIEW OF REAR AXLE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

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 HYDRAULIC COMPONENT SECTIONS AND
2 DIAGRAMS

LIFTING CYLINDER (DOUBLE MAST, LEFT/RIGHT)

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 HYDRAULIC COMPONENT SECTIONS AND
DIAGRAMS 3

FREE-ACTING LIFTING CYLINDER (TRIPLE, MIDDLE)

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 HYDRAULIC COMPONENT SECTIONS AND
4 DIAGRAMS

LIFTING CYLINDER (TRIPLE, LEFT/RIGHT)/

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 HYDRAULIC COMPONENT SECTIONS AND
DIAGRAMS 5

EXPLODED VIEW OF REAR AXLE

70
1. Screw 21. Steering pivot pin
2. Bracket 22. Shaft
3. Nut 23. Tube
4. Screw 24. Shim
5. Washer 25. Seal
6. Locknut 26. Bearing
7. Lock washer 27. Hub
8. Cover 28. Bearing
9. Seal 29. Washer
10. Bearing 30. Pin
11. Rack and pinion 31. Nut
12. Seal 32. Cap
13. Guide bush 33. Plug
14. Seal
15. Cylinder body
16. Seal
17. Cylinder head
18. Center body
19. Bearing
20. Seal

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 HYDRAULIC COMPONENT SECTIONS AND
6 DIAGRAMS
70

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 HYDRAULIC TROUBLESHOOTING

pages

MAIN OIL PUMP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2

DISTRIBUTOR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
STEERING CIRCUIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

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 2 HYDRAULIC TROUBLESHOOTING

MAIN OIL PUMP

CONDITION LIKELY CAUSE CORRECTIVE ACTION

Low oil level in oil tank Add oil to the specified level

No oil coming from the oil pump

Clean the oil line and the tank. If the
Clogged inlet pipe or strainer
oil is dirty, change it.

Defective anti-extrusion ring, O-ring

seal or pressure plate with worn Repair defective parts
bearing

Reset to the specified pressure using

Incorrect safety valve adjustment
Low discharge pressure on the oil a pressure gage
pump
Re-tighten the suction side line. Add
oil. Check the pump's oil seal. Do not
Presence of air in the circuit
operate the pump until all bubbles
have disappeared from the tank.

Cavitation due to a blocked inlet pipe Clean the strainer and repair the
or strainer clogged hose.

Air drawn in through a loose seal on

Re-tighten the seals
the suction side

Replace the oil with one of suitable

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Noisy oil pump

viscosity for the temperature at
Cavitation due to high oil viscosity
which the pump is required to
operate

Determine and correct the cause

Bubbles in the hydraulic fluid of the bubbles. It may be due to air
leakage. Change the oil.

Defective pump oil seal, defective

O-ring seal on the body, defective
Oil leak from the oil pump Replace defective parts
plate seal or worn pump rubbing
surfaces

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 HYDRAULIC TROUBLESHOOTING 3

DISTRIBUTOR

ANOMALY LIKELY CAUSE CORRECTIVE ACTION

Loosen the pressure adjustment

Adjust and re-tighten
screw
Deformed or damaged pressure
Replace
adjustment spring
Unstable or low safety valve pressure
Worn or blocked safety valve core Replace or clean

Pump reduced Examine and repair the pump

Replace the tilt lock valve and valve

Worn or damaged tilt lock valve
core as a unit
Fork tilts forward when the control
lever is operated with the motor
stopped. Broken tilt lock spring Replace the spring

Damaged tilt valve plunger O-ring

Replace the O-ring seal
seal

Mast unstable in forward tilt position Tilt safety valve malfunction Replace complete tilt safety valve

Worn valve body and distributor

Replace the distributor spool with the
spool with an excessive gap between
specified gap
them

Distributor spool not centered Hold it in the center

70
Mast lowered a long way when
distributor spool is centered
Reduced valve seal Examine and repair the cylinder

Plunger valve worn or blocked by dirt Replace or clean plunger valve

Damaged or deformed re-positioning

Replace the spring
spring

Presence of dirt between the valve

Distributor spool does not return to Clean
body and the distributor spool
neutral position
Control system jammed Adjust

No coaxial component repositioned Reinstall. Make coaxial.

Damaged O-ring Replace

Seal not leak-tight Check and re-tighten

Leak Clean the sealing plate and re-tighten

Loose sealing plate
the screws

Loose safety valve locknut and

Re-tighten
fastening nut between plates

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 4 HYDRAULIC TROUBLESHOOTING

STEERING CIRCUIT

CONDITION PROBABLE CAUSE CORRECTIVE ACTION

Re-tighten the nuts and

1. Oil leak between sections
replace the seals

2. Damaged seal in offset constriction Replace

Steering system leak
6. Damaged seal in check valve Replace

Grind down or replace

4. Set screw limiting shim not flat
the shim

1. Insufficient oil taken by the pump Adjust the distributor

2. Air inside the steering unit piping Remove air

3. Insufficient oil level in the tank Add oil

4. Pressure adjustment of the safety valve in the separating Adjust the pressure or
valve or valve blockage remove the dirt

5. Oil too viscous Change the oil

Large steering force
required or impossible
to turn the steering 6. Steering cannot return to its natural position due to a broken Replace the defective
lock spring or insufficient spring pressure spring
70

system

7. Failure or deformation of the pivot pin Replace

8. Failure or deformation of sleeve Replace the sleeve

9. Spring or valve defect Replace the spring

Replace the seal or the

10. Excessive steering cylinder leakage
cylinder

11. Deformed steering shaft Repair

1. Damaged pivot pin bearing Replace the bearing

Play in the steering 2. Excessive play in the wheel rim Adjust

wheel and wheels out-
of-alignment
3. Excessive play between the sleeve and the body of an obitrol Replace sleeve and
and reduction of volumetric efficiency body

The front left and front

right wheels do not
Incorrect controller parameter Adjust
correspond to the rear
wheel

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 ELECTRICITY

- ELECTRICAL CHARACTERISTICS AND

SPECIFICATIONS

- ELECTRICAL SCHEMATIC DIAGRAMS

- ELECTRICAL COMPONENTS LOCATION

- ELECTRICAL CONTROL AND ADJUSTMENT

- ELECTRICAL TROUBLESHOOTING

80
 ELECTRICAL CHARACTERISTICS AND
SPECIFICATIONS

pages

ELECTRICAL AND ELECTRONIC SYSTEM OVERVIEW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2

ELECTRICAL AND ELECTRONIC COMPONENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

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 ELECTRICAL CHARACTERISTICS AND
2 SPECIFICATIONS

ELECTRICAL AND ELECTRONIC SYSTEM OVERVIEW

Brake pedal
Parking brake
Levier de Frein à main

Forward / reverse
lever

Dashboard

Accelerator pedal
CAN potentiometer

ACS 23 P ACS 35 P
Controllers
Front right-hand
Front left-hand wheel motor Driver presence
wheel motor
Pump motor
80

Steering
Hydraulic
distributor
DC - DC

Hydraulic function

Driver presence

Transmission function
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 ELECTRICAL CHARACTERISTICS AND
SPECIFICATIONS 3

ELECTRICAL AND ELECTRONIC COMPONENTS

COMPONENTS PHOTOGRAPH CHARACTERISTICS

Voltage: 24V
Front working light Standard: GB10485-89/SEA
Power rating: 12W

Voltage: 28V
Position light Standard: GB10485-89
Power rating: 0,84W/0,14W

Voltage: 28V
Power rating: 0,56W(Flashing)/
0,84W (Braking)/
Rear light
0,10W (Position)/
0,56W (Reversing)
Standard: GB10485-89/SEA

Voltage: 10 to 30V
Rotating beacon light Service life: min. 1 x 107 times
Standard: GB/T13954-92

Voltage: 24V
Road sound alarm

80
105 - 125 db (A)

Voltage: 24V
88 dB (A)
Reverse warning indicators
70 - 90 / MIN
< 60 mA

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 ELECTRICAL CHARACTERISTICS AND
4 SPECIFICATIONS

ACS 23 P ACS 35 P CURTIS

Front left-hand traction Front right-hand traction Hydraulic pump speed

Model
controller controller controller

ME 315 Series 2

ME 316 Series 2
ACS48S-35 P ACS48S-23 P 1253-4801
ME 318 Series 2

ME 320 Series 2
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80-01-M227EN (10/31/2013)
 ELECTRICAL SCHEMATIC DIAGRAMS

CODES ON THE ELECTRICAL DIAGRAMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2

ME 315 / 316 / 318 / 320 SERIES 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A2
– KEY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A2
– ELECTRICAL DIAGRAM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A3

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 2 ELECTRICAL SCHEMATIC DIAGRAMS

CODES ON THE ELECTRICAL DIAGRAMS

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
1 11

A 5

S1

III II I O P
30 30 17 17 50 19 19 54 15 58 R R
F21
J J V BC BC

7
C
R

C
4
F27

9
5 9

F23 F25 F26 F4 S15

1 0
E 1 10
G1 K1 BC BC
N J N
5 OR
8
S12 V 7

F
Y1 6
J L
10
G K7
N 3 M1 G2 M
N
M8 8
M
3 7

K7
R1 R1 R1 R1 E15 E16
10 7
80

Example of marking on cables and components on an electrical diagram

Key:
1 - Vbat supply 7 - Splice
2 - Post contact supply (APC) 8 - Wire color
3 - Electrical component 9 - Electrical connector PIN N° designation
4 - Electrical connector 10 - Grounds
5 - Electrical component designation 11 - Marking grid
6 - Electrical connector designation

80-02-M227EN (10/30/2013)
 ELECTRICAL SCHEMATIC DIAGRAMS A1

80
(10/30/2013) 80-02-M227FR
 A2 ELECTRICAL SCHEMATIC DIAGRAMS

ME 315 / 316 / 318 / 320 Series 2 KEY Electrical components

Connectors Item Designation Position on diagram Hydraulic equivalence code

Hydraulic equivalence ACS23P Right wheel controller and variable speed drive I26
Item Designation Position on diagram
code
ACS35P Left wheel variable speed drive I32
P1 Diagnostic plug M24
EVC255-4803 DC pump motor I38
S1 Ignition switch G23
E1 Rear left position light M4
S2 Sidelight / working light stalk switch I5
E2 Rear right position light M5
S3 Forward/reverse shuttle I14 / I24
E3 Front left position light M6
S4 Indicator light stalk switch I13
E4 Front right position light M7
S5 Seat switch I24
E5 Front left working light M9
S6 Brake pedal switch I24
E6 Rear right working light M10
S7 Handbrake switch I24
E7 Front left indicator light M10
S8 Road sound alarm switch I19
E8 Rear left indicator light M11
S9 Rotating beacon light switch I20
E9 Front right indicator light M12
S10 Accelerator off-neutral * K24
E10 Rear right indicator light M13
S11 Tilting switch I35
E11 Left hand reverse light M14
S12 Steering switch I35
E12 Right hand reverse light M15
S13 Lifting switch I35
E13 Left hand brake light M16
S14 Emergency stop switch C22
E14 Right hand brake light M17
S15 Lowering cut-off valve control switch I24
E15 Rotating beacon light M20
S16 TDL switch I35
G1 Battery M2
M1 Reverse warning indicators M14
Electrical component codes Color codes
M2 Road sound alarm M18
Item Designation Item Colours
M3 Accelerator Potentiometer K23
1 Battery BC White
M4 Steering potentiometer K23
2 Rear left position light BL Blue
M5 Pump motor M39
3 Rear right position light G Grey
M6 Right traction motor K29
4 Front left position light J Yellow
M7 Left traction motor K34
5 Front right position light M Brown
M8 Seat cut-off time delay I22
6 Front working headlight relay N Black
M9 Charging circuit C24
7 Front left working light O Orange
OPT10 Display O23
8 Front right working light R Red
Y1 Mast lowering cut-off electrovalve G29
9 Front left indicator light RE Pink
80

10 Rear left indicator light VT Green

11 Flashing unit V Purple
FUSES
12 Front right indicator light
Item Designation Position on diagram
13 Rear right indicator light
FP1 Hydraulic control motor (300A) G41
14 Left hand reverse light
FP2 Front right-hand wheel motor (250A) E26
15 Right hand reverse light
FP3 Front left-hand wheel motor (250A) E32
16 Reverse warning indicators
F1 Control circuit (10A) E21
17 Left hand brake light
F2 Main circuit (10A) E22
18 Right hand brake light
F3 Lighting (10A) G6
19 Road sound alarm
F4 Spare (10A) E25
20 Reverse warning relay
RELAYS
21 Rotating beacon light
Item Designation Position on diagram
22 Emergency stop
K1 Start-up authorization relay G41 / I35
23 Steering potentiometer
K2 Reverse warning relay I18 / I19
24 Accelerator potentiometer
K3 Front working light relay I9 / M8
25 Display
K4 Flashing unit G12
26 Right wheel controller and variable speed drive
K5 Line breaker C24 / I28
27 Left wheel variable speed drive
28 DC pump motor

80-02-M227FR (10/30/2013)
 ELECTRICAL SCHEMATIC DIAGRAMS A3
ELECTRICAL DIAGRAM ME 315 / 316 / 318 / 320 Series 2

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42

A A

C K5 C

S14

M9 F P2 F P3 FP1

F4
E E

F1 F2
F3
r/bc

r/bc r/bc r/bc r/bc r/bc r/bc r/bc

G S1 G
1 J1
2
3

ACS35P
4
B+
3 KEY 5

K4 K2 S5 HIGH SIDE IN 28
M8 12 DI1
S12
6
HIGH SIDE OUT 29 7
bl/o S3 19 DI2
Open Drain Out 1 4
K5 S13
23 DI3 8

S6
Open Drain Out 2 16
Y1 1
B+
ACS23P S11 9 EVC255-4803
I 11 DI4 Open Drain Out 3 25 KEY
S16 I
S7 18 DI5 Open Drain Out 4 24 10

30 ID6 Open Drain Out 5 27 11

S2 K3 S4 S3 S6 K2 S8 S9 34 ID8 Open Drain Out 6 13 12
35 ID9
0 1 2 L 0 R Motor temp 26 1
2 ID10
S15 1 ID11
2 J2
m bl/bc r bl bc r vt bc/n bl/bc Encoder 12v 5 1
Encoder CH1 7 2
M6 16
S10 17 ID7 8
Motor temp
17
1
Encoder CH2 3 Motor temp GND 2
M3 32 Alim ANA Encoder GND 6 4 Encoder 12v
3
1
K U
5 M7 B- M- B+ K
M3 20 INANA1 Encoder CH1 2
6
V Encoder CH2 3
r M4
M4 9 INANA2 W Encoder GND
4
4
23
CAN_H2 33
DC-DC 31 GNDANA CAN_H1
CAN_L1
U A2
CAN_L2 21 15
V
8
+ 48V
120 Ω CAN_GND2 10 CAN_GND1 120 Ω W D2
CAN_120 15 9 CAN_120

80
- B- B-
M5
M M
G1

- E1 E2 E3 E4 K3 E5 E6 E7 E8 E9 E10 M1 E11 E12 E13 E14 E15 7

CAN_H

M2 P1 2
CAN_L

CAN_GND
3
9

O O

B+
n n n n n n n n n n n n n n n n n n n 1
0v
2
CAN_GND
OPT10 3
CAN_L
5
CAN_H
6

Q Q

1 2 3 4 5 6 7 8 9 10 11 12 13 16 14 15 17 18 19 20 21 22 25 23 24 26 27 28

S S

(10/30/2013) 80-02-M227FR
 A4 ELECTRICAL SCHEMATIC DIAGRAMS
80

80-02-M227FR (10/30/2013)
 ELECTRICAL COMPONENTS LOCATION

80

(10/3/2013) 80-03-M227EN
 2 ELECTRICAL COMPONENTS LOCATION

Front left-hand traction

controller

Front right-hand
Charging circuit
traction controller

Hydraulic pump
speed controller

Line breaker

Front left-hand
wheel motor
80

Front right-hand
wheel motor

Pump motor

DC-DC
transformer
80-03-M227EN (10/3/2013)
 ELECTRICAL COMPONENTS LOCATION 3

Steering
switch
Driver presence
module

Handbrake
switch

Positioning
switch Lowering
switch

Brake switch

80

(10/3/2013) 80-03-M227EN
 4 ELECTRICAL COMPONENTS LOCATION
80

80-03-M227EN (10/3/2013)
 ELECTRICAL CONTROL AND ADJUSTMENT

pages

DASHBOARD - OPT 10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A2

– PRINCIPLE OF BDI OPERATION (3 WHEELS AND 4 WHEELS): . . . . . . . . . . . . . . . . . . . . . . A3
CONTROL PANEL SET-UP AND OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A4
– EXTERNAL VIEW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A4
– NORMAL OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A4

VARIABLE SPEED DRIVES: 6TH GENERATION ACS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .B

PUMP VARIABLE SPEED DRIVE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .C

80

(10/4/2013) 80-04-M227EN
 A2 ELECTRICAL CONTROL AND ADJUSTMENT

DASHBOARD - OPT 10

Supply voltage: 24 to 80 V DC
Current: 90 mA (at 24V
DC)
P
Temperature: -30 / +55°
(in operation)
D 12 k m/h -30 / +70°
B AT% 80
(in storage)
Protective glass: IP65 (front)
1 2 3 4 5 Connector: AMPSEAL (8 pins)

1 - Wide 24V to 80V operating voltage range with built-in protection against undervoltage, overvoltage
or polarity reversal.
2 - Standard mode can open an interface allowing simple and reliable communication.
3 - Two feature levels for standard users and maintenance staff.
4 - System of configurable diagnostics and parameter settings menus.
5 - Management of performance modes in conjunction with the user.
6 - Password management.
7 - Buzzer.

Press twice on the "*" key. The instruction

* "INPUT PASSWORD" will appear.
* Enter the password
80

PASSWORD: 55555

80-04-M227EN (10/4/2013)
 ELECTRICAL CONTROL AND ADJUSTMENT A3

PRINCIPLE OF BDI OPERATION (3 WHEELS AND 4 WHEELS):

Press on the green curve to asses the BDI when the key switches from OFF to ON and the measured BDI
value according to the voltage. As follows: 51,0V --100%; 47,0V --0%. If the selected value is not correct,
the previously saved value is chosen.
Press on the red curve to assess the BDI when the key switches to ON. Check the voltage per second and

80
take the average value. Renew the BDI every 5 seconds. If the value of the BDI is less than the current
value, lower by 5%, but not more than 5% each time. When lowered by 5%, the value of the BDI must
not rise again.
You will be warned when the discharge level reaches 25%. The alarm will sound with a reading of 20%,
while operating at reduced speed.

(10/4/2013) 80-04-M227EN
 A4 ELECTRICAL CONTROL AND ADJUSTMENT

CONTROL PANEL SET-UP AND OPERATION

EXTERNAL VIEW
M D
A B C E
F

D 12 k m/h
B AT% 80

1 2 3 4 5

G L
H J K
I

A - Communication indicator LED H - Switch to low speed button

B - Anomaly indicator LED I - Acceleration button
C - Low battery indicator LED J - Backup button
D - Reduced speed indicator LED K - Steering angle indication button
E - Acceleration indicator LED L - Time display button
F - Parking indicator LED M - LCD screen
G - Menu button

NORMAL OPERATION

DESCRIPTION OF THE SIX FOLLOWING INDICATORS:

80

LED A: Communication
Flashes only during software download.

LED B: Anomaly
Lights if an incorrect operation is performed or in, the even,t of a problem with
the forklift truck. The LCD screen then displays the error codes, together with a
brief explanatory sentence.

LED C: Low battery

Lights when the battery's state of charge reaches 20% of full charge. The driver
will then hear the buzzer and the message "Low Battery" will appear on the LCD
screen. The battery requires charging.

LED D: Reduced speed

If lit, the lift truck is operating at less than slow mode, i.e. the lift truck's maximum
driving speed is reduced. Button "1" allows switching between slow and fast modes.

80-04-M227EN (10/4/2013)
 ELECTRICAL CONTROL AND ADJUSTMENT A5

LED E : Acceleration
If lit, the lift truck is operating at less than slow acceleration mode, i.e the lift
truck's maximum driving acceleration is reduced. Button "2" is used to switch
between slow and fast acceleration modes.

LED F: Parking
Lit when parked.
P
Button G: Menu
Only used in diagnostic mode.

Button H: Switch to low speed

Used to switch between fast and slow
driving modes.
1
Button I: Change of acceleration
Used to switch between fast and slow
acceleration modes. 2

Button J: Backup
Spare button.

Button K: Change to steering angle

3
display
Used to switch to the steering angle
display menu. The following image
may appear on the LCD screen.
4

The squares on the first line indicate the guide wheel steering angle. The black square moves to the left
when the guide wheel turns to the left and the the right when it turns to the right.

80
Time display button L
Used to display the total KEY on time.

5
The following display appears after
pressing the button once.

The following display appears when the button is pressed a second time.

The display is returned to the original image by pressing the button one more time.

LCD SCREEN M
Each time that KEY is activated, the lift truck performs a self-check, and the six LEDs (A to F) flash in turn.
The drive speed and the BDI are displayed on the LCD screen after start-up. The LCD screen provides
information on the operating characteristics.
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 A6 ELECTRICAL CONTROL AND ADJUSTMENT
80

80-04-M227EN (10/4/2013)
 ELECTRICAL CONTROL AND ADJUSTMENT B1

VARIABLE SPEED DRIVES: 6TH GENERATION ACS

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 B2 ELECTRICAL CONTROL AND ADJUSTMENT
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 ELECTRICAL CONTROL AND ADJUSTMENT B3

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 ELECTRICAL CONTROL AND ADJUSTMENT B5

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 B6 ELECTRICAL CONTROL AND ADJUSTMENT
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 ELECTRICAL CONTROL AND ADJUSTMENT B7

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 B8 ELECTRICAL CONTROL AND ADJUSTMENT
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 ELECTRICAL CONTROL AND ADJUSTMENT B9

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 B10 ELECTRICAL CONTROL AND ADJUSTMENT
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 ELECTRICAL CONTROL AND ADJUSTMENT B11

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 B12 ELECTRICAL CONTROL AND ADJUSTMENT
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