This document provides a service manual for ERP20ALF, ERP25ALF, ERP30ALF lift trucks. It contains sections on maintaining and repairing various parts of the lift truck including the frame, motors, axles, steering, brakes, hydraulics, controls, cylinders, electrical systems, mast, fasteners, diagrams, and specifications. The overview section describes the main components of the lift truck frame and related parts like the overhead guard, battery compartment, hood, seat, and instrument panel.

1. ERP20ALF, ERP25ALF, ERP30ALF (D216) (ERP040-060DH) (D216)
SERVICE MANUAL CONTENTS
SECTION
PART
NUMBER
YRM
NUMBER
REV
DATE
FRAME............................................................................................................................ 524179935 0100 YRM 0582 07/05
DC MOTOR MAINTENANCE.......................................................................................... 524158039 0620 YRM 0294 03/08
AC MOTOR MAINTENANCE.......................................................................................... 524183080 0620 YRM 1053 03/10
DRIVE AXLE, SPEED REDUCER, AND DIFFERENTIAL............................................. 524179938 1400 YRM 0575 03/03
STEERING AXLE............................................................................................................ 524158752 1600 YRM 0316 08/06
STEERING CONTROL UNIT.......................................................................................... 524158753 1600 YRM 0720 11/06
STEERING SYSTEM...................................................................................................... 524183081 1600 YRM 1054 11/06
BRAKE SYSTEM............................................................................................................ 524179943 1800 YRM 0566 03/03
HYDRAULIC SYSTEM.................................................................................................... 524179945 1900 YRM 0559 04/09
MAIN CONTROL VALVE................................................................................................ 524179946 2000 YRM 0562 02/09
TILT CYLINDERS........................................................................................................... 524150790 2100 YRM 0103 03/07
ELECTRICAL SYSTEM.................................................................................................. 524183082 2200 YRM 1055 10/09
AC MOTOR CONTROLLER DESC/CHKS/ADJ/TRBSHT/REP&THEORY OF
OPERATION/DISPLAY PANEL................................................................................. 524183083 2200 YRM 1056 03/09
TROUBLESHOOTING AND ADJUSTMENTS USING THE AC CONTROLS
PROGRAM................................................................................................................. 524183085 2200 YRM 1058 04/11
INDUSTRIAL BATTERY................................................................................................. 524158040 2240 YRM 0001 09/14
MAST - DESCRIPTION................................................................................................... 524158890 4000 YRM 0521 03/06
MAST - REPAIR.............................................................................................................. 524158891 4000 YRM 0522 07/10
METRIC AND INCH (SAE) FASTENERS....................................................................... 524150797 8000 YRM 0231 10/13
DIAGRAMS..................................................................................................................... 524183086 8000 YRM 1059 08/12
PERIODIC MAINTENANCE............................................................................................ 524183087 8000 YRM 1060 02/10
CAPACITIES AND SPECIFICATIONS........................................................................... 524183088 8000 YRM 1061 01/05
PART NO. 524183079 (09/14)

2. 100 YRM 582 Description
General
This section has a description and the service procedures for the parts of the frame. These parts include the frame,
counterweight assembly, overhead guard, hood and seat assembly, access panels, and label positions. The proce-
dure for removing the traction motor is also described in this section.
Description
MAIN FRAME
The main frame is a single weldment. See Figure 1.
The main frame has mounts for the following:
• Counterweight
• Overhead guard,
• Battery restraint and hood
• Tilt cylinders
• Steering axle
• Drive axle assembly
• Cowl assembly
• Floor pedals and floor plates
• Side step and fender weldments
• Hydraulic tank
• Pump and motor assemblies (steer, lift, and traction
motors)
• Control valves, and the levers
The hood is part of the operator and battery restraint
system. The seat is part of the operator restraint sys-
tem. The floor plates can be removed for access to
the traction motor. The panels on the sides of the bat-
tery compartment can also be easily removed. The hy-
draulic tank, lift pump motor assembly, and the steer-
ing pump motor assembly are in a compartment be-
tween the battery and the counterweight. The SCR
(silicon controlled rectifier) or transistor electronic con-
trollers and contactors are in the top of the counter-
weight. The top cover of the counterweight can be re-
moved for access to the controllers and contactors for
early model ERP20-30ALF (B216) lift trucks. See Fig-
ure 2. The rear cover of the counterweight can be re-
moved for access to the controllers and contactors for
later model ERP20-30ALF (B216) trucks and ERP20-
30ALF (ERP040-060DH) (D216) trucks. See Figure 3.
There are two main frames for lift trucks made for use in
North America and two main frames for lift trucks made
for use in Europe. The frames are different because
of the different battery compartment sizes. There are
two battery compartment lengths. The battery com-
partment widths are also different for Europe and North
America. See Battery Specifications, at the back of this
manual.
WARNING
The battery must fit the battery compartment so
that the battery restraint will operate correctly. A
loose battery can cause serious injury and property
damage if the lift truck overturns. Adjust the spacer
plate to prevent the battery from moving more than
13 mm (0.5 in.) forward or backward.
WARNING
Maximum clearance between the battery and bat-
tery compartment width is 13 mm (0.5 in.). Maxi-
mum clearance between the battery and the spacer
plate is also 13 mm (0.5 in.). The Battery Specifica-
tions chart shows the minimum size compartment
allowed.
The weight of the battery is a large part of the coun-
terweight system on an electric lift truck. Make sure
that the battery is within the weight limits indicated on
the nameplate. Each model of lift truck has a cast-iron
counterweight that provides the additional weight nec-
essary for the indicated capacity.
OTHER FRAME WELDMENTS
These frame parts are the right-hand and left-hand side
step and fender weldments, and the cowl weldment.
See Figure 1. Each part is a weldment fastened to
the main frame to make the frame assembly. The cowl
weldment is a mount for the front of the overhead guard
(see Figure 2 and Figure 3), the steering column as-
sembly (see Figure 4, Figure 5, and Figure 6), the re-
lease linkage of the parking brake, and the instrument
panel with light switches. The display panels for these
models of lift trucks are mounted into the instrument
panel. See Figure 4, Figure 5, and Figure 6.
1

3. Description 100 YRM 582
1. COWL
2. BATTERY SPACER PLATE
3. BATTERY RETAINER ROD
4. FRAME
5. SIDE STEP AND FENDER WELDMENT
6. ACCESS PANEL
7. FLOOR PLATES
Figure 1. Lift Truck Main Frame
Legend for Figure 2
1. OVERHEAD GUARD
2. COVER OF ELECTRONICS
COMPARTMENT
3. COUNTERWEIGHT
4. TOW PIN AND HANDLE
5. CAPSCREW
6. LOCKWASHER
7. WASHER
8. HANDLE
9. SCREW
10. NUT
11. FOAM TAPE
2

4. 100 YRM 582 Description
Figure 2. Overhead Guard and Counterweight Early Model ERP20-30ALF (B216) Trucks
3

5. Description 100 YRM 582
OVERHEAD GUARD
WARNING
Do not operate the lift truck without the overhead
guard and cowl correctly fastened to the lift truck.
The overhead guard is a weldment that fastens to the
main frame and cowl to help protect the operator from
falling objects. For early model ERP20-30ALF (B216),
see Figure 2. For later model ERP20-30ALF (B216)
and ERP20-30ALF (ERP040-060DH) (D216) trucks,
see Figure 3. A slot in the overhead guard permits
removal of the battery without removing the overhead
guard.
Legend for Figure 3
A. OVERHEAD GUARD USED ON LATER MODEL ERP20-30ALF (B216) TRUCKS
B. OVERHEAD GUARD USED ON ERP20-30ALF (ERP040-060DH) (D216) TRUCKS
1. OVERHEAD GUARD
2. HANDLE
3. ROLLING THREAD SCREW
4. NUT
5. WASHER
6. CAPSCREW
7. COVER
8. TOW PIN
9. TAPE
10. COVER
11. SOCKET CAPSCREW
12. LOCKWASHER
13. COUNTERWEIGHT
14. FOAM TAPE
15. SPACER
16. BRACKET
17. SELF RETAINING NUT
4

6. 100 YRM 582 Description
Figure 3. Overhead Guard and Counterweight Later Model ERP20-30ALF (B216) Trucks and ERP20-30ALF
(ERP040-060DH) (D216) Trucks
5

7. Description 100 YRM 582
A. CURTIS METER
B. GE METER (OPTIONAL)
C. STEERING CONTROL UNIT USED ON EARLY
MODEL LIFT TRUCKS
D. STEERING CONTROL UNIT USED ON LATER
MODEL LIFT TRUCKS
1. STEERING WHEEL
2. STEERING CONTROL UNIT
3. LATCH MECHANISM
4. COLUMN COVER
5. COLUMN FRAME
6. HORN SWITCH CONNECTOR
7. ON-DEMAND STEERING COMPONENTS (NOT
ALL UNITS)
8. OPTIONAL BASIC DISPLAY PANEL
9. STANDARD DISPLAY PANEL (WITH CURTIS OR
GE METER)
10. PREMIUM DISPLAY PANEL
11. HORN BUTTON
12. STEERING COLUMN
13. STEERING COLUMN NUT
Figure 4. Steering Column and Instrument Panel Early Model ERP20-30ALF (B216) Lift Trucks
6

8. 100 YRM 582 Description
1. STEERING WHEEL
2. SHIFT LEVER MECHANISM
3. COLUMN COVER
4. STEERING CONTROL UNIT
5. COLUMN FRAME
6. ON-DEMAND STEERING COMPONENTS
7. DISPLAY PANEL (PREMIUM DISPLAY PANEL
SHOWN)
8. LATCH MECHANISM
9. HORN SWITCH CONNECTOR
10. HORN BUTTON
11. STEERING COLUMN
12. STEERING COLUMN NUT
Figure 5. Steering Column and Display Panel, Later Model ERP20-30ALF (B216) Trucks
7

9. Description 100 YRM 582
Figure 6. Steering Column and Display Panel, ERP20-30ALF (ERP040-060DH) (D216) Trucks
8

10. 100 YRM 582 Description
Legend for Figure 6
1. ON-DEMAND STEERING COMPONENTS
2. SHIFT LEVER MECHANISM
3. STEERING WHEEL
4. DISPLAY PANEL
5. COLUMN COVER
6. COLUMN FRAME
7. STEERING CONTROL UNIT
8. COWL WELDMENT
9. DASH
10. COLUMN MOUNT
11. LATCH MECHANISM
12. HORN SWITCH CONNECTOR
13. HORN BUTTON
14. STEERING COLUMN
15. STEERING COLUMN NUT
BATTERY AND OPERATOR RESTRAINT,
HOOD, AND SEAT ASSEMBLY
Battery Restraint
WARNING
The hood and battery restraint, as well as the latch
for the hand lever assembly, must operate correctly
before a lift truck is operated. These parts are part
of the battery restraint system. The battery restraint
system must operate correctly to help provide rea-
sonable protection to the operator if the lift truck
tips over.
A battery restraint system is installed as a safety device.
See Figure 7. The function on the battery restraint sys-
tem is to hold the battery in the battery compartment in
case of a tip over. Part of the battery restraint system
is a battery restraint rod at the rear of the battery com-
partment. See Figure 7. This restraint rod extends over
the rear edge of the battery case to help hold the bat-
tery within the battery compartment during a tip over. A
handle is used to move the restraint rod. The handle
of the battery restraint must be in the DOWN position to
close the hood. The handle can be moved to the DOWN
position only after the restraint rod is extended over the
battery. The restraint rod can only be retracted when
the hood is in the UP position.
WARNING
The battery must fit the battery compartment so
that the battery restraint will operate correctly. A
loose battery can cause serious injury and property
damage if the lift truck overturns. The battery must
not be able to move more than 13 mm (0.5 in.) for-
ward, backward, or side to side.
An adjustable spacer plate is used at the front of the
battery compartment to prevent forward and backward
movement of the battery. See Figure 8. The adjustable
spacer plate is used inside the battery compartment.
See Figure 8. The spacer plate must be adjusted for
a maximum clearance of 13 mm (0.5 in.) with the bat-
tery against the rear bulkhead. There must be some
clearance to allow battery removal. See the section
Periodic Maintenance 8000 YRM 552 for both early
and later model ERP20-30ALF (B216) trucks and Peri-
odic Maintenance 8000 YRM 1060, for ERP20-30ALF
(ERP040-060DH) (D216) models, to remove the battery
and adjust the spacer plate.
A. RETRACTED B. EXTENDED
1. BATTERY RESTRAINT WARNING LABEL
2. HOOD
3. BATTERY RESTRAINT HANDLE
4. BATTERY
5. STEEL WELDMENT
Figure 7. Battery Restraint Rod
9

11. Description 100 YRM 582
1. BATTERY
COMPARTMENT
2. BATTERY
3. BULKHEAD
4. SPACER PLATE
5. ADJUSTMENT
CAPSCREW
6. JAM NUTS
Figure 8. Battery Spacer Plate
Hood
WARNING
The gas springs for the hood can raise the hood at
a rapid rate and cause an injury. DO NOT get over
hood when raising hood.
WARNING
The batteries for these lift trucks must fit the bat-
tery compartment width with a maximum of 13 mm
(0.5 in.) clearance. The Battery Specifications at
the back of this manual, shows the minimum sizes
of the battery compartments.
Another important part of the battery restraint system
is the steel weldment that is also the hood frame. See
Figure 7. This hood frame is connected to the lift truck
frame with hinges at the rear of the hood (see Fig-
ure 13). The front of the hood and frame is locked in the
closed position by the assembly for the hydraulic hand
levers. A latch releases the assembly to tilt forward and
allow the hood to raise. See Figure 9. Gas springs help
lift the hood assembly. The seat and other parts of the
operator restraint system fasten to the hood assembly.
A. CLOSED OVER HOOD B. OPEN
1. HAND LEVER ASSEMBLY
2. HOOD
3. SEAT
4. LATCH HANDLE
5. LATCH
Figure 9. Hood and Hand Lever Assembly with Latch
10

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13. 100 YRM 582 Overhead Guard Replacement
Operator Restraint System and Seat
Assembly
The operator restraint system has the seat, hip re-
straints, and the seat belt. The system helps the
operator stay within the lift truck in case of a tip over.
See Figure 10.
Make sure that the seat is not loose on the rails. Make
sure the seat rails are not loose. The seat rails must lock
securely in position, but move freely when unlocked.
The seat rails must be securely attached to the mount-
ing surface.
Legend for Figure 10
1. SEAT
2. HIP RESTRAINT
3. SEAT BELT AND MOUNT
4. SEAT RAILS
5. CAPSCREW
Figure 10. Seat Assembly and Operator Restraint
Overhead Guard Replacement
REMOVE
WARNING
Do not weld, drill, grind, or cut the overhead guard
for mounts of lights or accessories. The strength
of the overhead guard can be reduced.
1. Remove the battery as described in the section Pe-
riodic Maintenance 8000 YRM 552 for both early
and later ERP20-30ALF (B216) model lift trucks
and Periodic Maintenance 8000 YRM 1060 for
ERP20-30ALF (ERP040-060DH) (D216) lift truck
models.
2. Access to the capscrews that hold the rear legs of
the overhead guard to the frame is from the battery
compartment. See Figure 11 and Figure 12. Re-
move the capscrews, washers, and nuts that fasten
each leg.
3. Remove the capscrews, washers, and nuts that
hold each front leg of the overhead guard to the
cowl. Disconnect any electric wires from under the
cowl that go through the front legs of the overhead
guard. When the overhead guard is lifted from the
frame, make sure these electric wires move through
the holes in the frame at the front and rear so that
they are not damaged.
4. Use a lifting device or another person to help lift the
overhead guard from the lift truck.
INSTALL
Put the overhead guard on the lift truck. Install any
electric wires from the overhead guard legs through
the holes in the frame. Install the capscrews, washers,
and nuts that hold each front leg to the frame. See
Figure 11 and Figure 12. Tighten the capscrews to
102 N•m (75 lbf ft). Install the capscrews, washers,
and nuts that hold the rear legs to the frame. Tighten
the capscrews to 102 N•m (75 lbf ft). Install the battery
as described in the section Periodic Maintenance
8000 YRM 552 for both early and later ERP20-30ALF
(B216) model lift trucks and Periodic Maintenance
8000 YRM 1060 for ERP20-30ALF (ERP040-060DH)
(D216) lift truck models.
11

14. Overhead Guard Replacement 100 YRM 582
Figure 11. Overhead Guard and Counterweight Early Model ERP20-30ALF (B216) Trucks
12

15. 100 YRM 582 Overhead Guard Replacement
Legend for Figure 11
1. OVERHEAD GUARD
2. COVER OF ELECTRONICS COMPARTMENT
3. COUNTERWEIGHT
4. TOW PIN AND HANDLE
5. CAPSCREW
6. LOCKWASHER
7. WASHER
8. HANDLE
9. SCREW
10. NUT
11. NUT
12. FOAM TAPE
13