Heavy Duty Machine Repair Guide: JCB Backhoe Loader Power Shift

This article describes JCB Backhoe Loader Power Side Shift - Chain Adjustment

03.2024 JCB ServiceMaster4 v24.3.1 Diagnostic Software with SW Files

The chain tension should be checked at the initial 100 hours
service and every 500 hours.
Check and Adjust
1
Park the machine on firm level ground, engage the
parking brake and set the transmission to neutral.
Lower the loader arms to the ground.
2
Position the carriage centrally and rest the bucket on
the ground, remove the starter key.
3
Check the chain tension which should be 5 to 10mm
(0.19 to 0.39in) deflection A at the mid point. The
tension should be equal for all chains.
4
If adjustment is required, slacken locknuts C and adjust
on nuts B as required, tighten locknuts C on
completion.
5
Repeat steps 3 and 4 for the opposite pair of chains.
Note: When there is no thread left for adjustment fit new
chains.
6
Operate the carriage side to side several times and
recheck the deflection.

JCB Heavy Duty Truck Diagnostic Tool JCB Electronic Service Tool with JCB ServiceMaster42023.09
Removal
1
Park the machine on firm level ground, engage the
parking brake and set the transmission to neutral.
Lower the loader arms to the ground.
2
Position the carriage centrally and rest the bucket on
the ground, remove the starter key.
3
Undo and remove nuts B.
4
Remove split pins D and pin E.
5
Withdraw chains from the machine.
Assembly
1
Thread the chains around the pulley and secure to the
carriage with pin E, fit new split pins D.
2
Connect chain adjusters, tension chains as required,
see Check and Adjust.
Power Sideshift - Chain Adjustment
The chain tension should be checked at the initial 100 hours
service and every 500 hours.
Check and Adjust
1
Park the machine on firm level ground, engage the
parking brake and set the transmission to neutral.
Lower the loader arms to the ground.
2
Position the carriage centrally and rest the bucket on
the ground, remove the starter key.
3
Check the chain tension which should be 5 to 10mm
(0.19 to 0.39in) deflection A at the mid point. The
tension should be equal for all chains.
4
If adjustment is required, slacken locknuts C and adjust
on nuts B as required, tighten locknuts C on
completion.
5
Repeat steps 3 and 4 for the opposite pair of chains.
Note: When there is no thread left for adjustment fit