JLG 20VP (3120728) Service Manual - Manual (Page 38)

SECTION 2 - SERVICE PROCEDURES
2-20 – JLG Lift – 3120728
nector from the touch pad switch through the slot at
the top of the housing. Before pressing the touch
pad adhesive side to the upper housing mounting
surface, visually align the touch pad edges with the
edges of the recess in the housing mounting sur-
face.
5. Once the touch pad is installed, on the underside of
the housing apply just enough silicone sealant to fill
the small slot around the ribbon cable to help seal
the slot and also strengthen the ribbon cable con-
nection at the touch pad surface.
6. Re-install the circuit board and plug the ribbon cable
connector into the circuit board cable socket.
Lower Half Housing Installation
1. Before installing the lower half housing apply a non-
conductive grease to the square holes of the wiring
harness connector socket on the inside of the hous-
ing socket. This will help keep out dirt and moisture.
2. Carefully slide the lower housing onto the upper half
of the platform control box assembly until seated
completely against the upper housing edges.
3. Secure lower half housing to the upper half housing
using the six (6) screws removed during dissassem-
bly.
2.7 BATTERY CHARGER ASSEMBLY AND
DISASSEMBLY
General Information
DO NOT ATTEMPT TO DISASSEMBLE THE BATTERY CHARGER
IF MACHINE IS STILL UNDER WARRANTY. OPENING THE BAT-
TERY CHARGER WHILE THE MACHINE IS UNDER WARRANTY
WILL VOID THE CHARGER WARRANTY. IF UNDER WARRANTY
REQUEST A REPLACEMENT CHARGER FROM THE FACTORY.
A LS O BE FOR E R E P L AC I NG A N Y C OM P O NE N T, U S E TH E
CHARGER MANUFACTURERS TROUBLESHOOTING GUIDE
INCLUDED WITH THE MACHINE FOR CHECKING THE INTERNAL
AC AND DC CIRCUITS TO DETERMINE WHICH COMPONENT HAS
FAILED. COMPLETE WIRING DIAGRAMS PERTAINING TO YOUR
MODEL CHARGER ARE ALSO INCLUDED IN THE MANUFACTUR-
ERS CHARGER MANUAL.
The VP Series battery charger allows for replacement of
the following internal components. Consult your Illustrated
Parts Manual for part numbers of these components
which are available from the JLG Parts Department:
• Transformer
• Printed Circuit Board
• Shunt Assembly
• Interlock Relay
• SCR Rectifier
• AC Circuit Breaker
• DC Circuit Breaker
Replacement and troubleshooting of these components
requires removal of the battery charger from it’s mounting
position on the machine.
Battery Charger Removal
1. Remove the rear cover from the machine.
2. Unbolt and lower the MC-1 Controller Box.
3. Remove the four (4) capscrews securing the charger
to it’s mounting plate.
4. Disconnect the DC wiring from the positive/negative
battery terminals and interlock connector from the
wiring harness.
5. Remove the charger from the machine.
WIRING HARNESS
CONNECTOR SOCKET