Page 12
902-002-11 Rev 6
Parts & Service 21/09/2015
SECTION 4:
Troubleshooting
4.0 TROUBLE SHOOTING GUIDE
PROBLEM
CHECK
REMEDY
1. I-Lock Safety Knuckle will not
retract when activated
Check hydraulic line to I-Lock Safety
Knuckle
If damaged or leaking repair or
replace
Check electrical circuit between
solenoid and I-Lock Controller
Repair connections or replace loom if
required
Check function of solenoid spool
valve for I-Lock Safety Knuckle circuit
Remove spool valve, clean and
clear any debris. Replace spool if
necessary
Check mechanical function of
solenoid coil for I-Lock Safety
Knuckle circuit
Replace solenoid coil if required
Check in-cab switch is functioning
See instructions below
2. I-Lock Safety Knuckle remains in
retracted (up) position
Check Safety Knuckle & housing for
damage
Repair or replace parts if necessary
Check Safety Knuckle and housing
for lodged debris
Remove debris
Check hydraulic lines
Repair or replace if required
Check I-Lock spring assembly for
damage
Replace if required
Check I-Lock shaft assembly for
damage
Replace if required
3. The I-Lock Safety Knuckle is slow
to or partially activates.
Check the system pressure being
supplied to the I-Lock piston during
operation
Crowd the bucket cylinder to
overcome low idle pressure
Check condition of wiring loom
between the in-cab I-Lock Controller
and the solenoid
Replace or repair as necessary
NOTE: Should this problem occur it must be investigated and remedied
immediately
