ED EPT20-15EHJ User manual

Service Manual
EPT20-15EHJ
Semi-electric Pallet Truck
MANUAL NO. SM1121 01.16

CONTENTS
Table of contents
1.LOAD WHEELS...............................................................................1
1.1 Disassembly and Assembly.......................................................1
2.DRIVE UNIT....................................................................................2
2.1 Disassembly and Assembly.......................................................2
3. TILLERHEAD .................................................................................4
4. HYDRAULIC SYSTEM...................................................................7
4.1Disassembly and Assembly........................................................7
4.2 Commissioning..........................................................................8
4.3 General Failures and Troubleshooting......................................9
4.4 Oil Seal Replacement..............................................................12
4.5 Other Issues............................................................................15
5. ELECTRICAL ...............................................................................17
5.1 Disassembly and Assembly.....................................................17
5.2 Electrical Schematic Diagram..................................................19
5.3 Power Cables..........................................................................20
5.4. Controller Troubleshooting .....................................................21
5.4.1. Fault Detection .................................................................21
5.4.2. Hand Held Programmer (Optional)...................................21
5.4.3. Fault Recording................................................................21
5.4.4. General Checkout.............................................................21
5.4.5. Diagnostic History.............................................................23
5.4.6. Test the Fault Detection Circuitry......................................23
5.4.7. Programmable Parameters ..............................................23
5.4.8. Diagnostics and Troubleshooting.....................................24
5.4.8.1. LED Diagnostics.........................................................24
5.4.9. Programmer Diagnostics...............................................24

1
REV. 03/2015
LOAD WHEELS
1.LOAD WHEELS
Place hardwood block under the Frame as shown in
Figure 01101.Remove the riser pivot shaft (index 2)
after extracting roll pin (index 1).
Remove the riser pivot shaft (index 4) after
extracting roll pin (index 3) as shown in Figure
01102.Then the wheel bracket assembly (index 5)
can be replace.
If the load wheel (index 9) is only replaced, the
riser pivot shaft (index 7) will have to be removed
after extracting roll pin (index 6) as shown in Figure
01103.Remove the bearings (index 8) and change
the load wheel (index 9).
CAUTION
In order to avoid scratching the surface of vehicle,put
a piece of rubber mat on the hardwood block.
1.1 Disassembly and Assembly

2
REV. 03/2015
DRIVE UNIT
2.DRIVE UNIT
Place hardwood blocks under the Frame as shown
in Figure 01201.Make the drive wheel hang in the air
Unfasten the four screws (index 1, Figure 01202) by
using a wrench and remove the upper cover (index 3)
and the lower cover (index 2) .
Dismantle the motor cable box (index 4) and remove
the two cables (index 5).Unscrew the three screws
(index 6) and take down the brake (index 7).Unfasten
the eight screws (index 8) and remove the gear box
cover (index 9) and the gears (index 10) .Note the
number and position for reference at assembly.Then
knock out the assembly (index 12) after unscrewing
the five screws (index 11).Refer to Figure 01203.
CAUTION
Put the hardwood block as neer the drive wheel as
possible.
2.1 Disassembly and Assembly