SECTION 35 - HYDRAULIC SYSTEM
35-19
Foot or hand control and control valve spool
lock solenoids:
Pretest instructions:
* Hydraulic oil reservoir oil at proper oil level
* Operator in seat
* Service/Run switch in “RUN” position
* Seat belt fastened
* Ignition switch in the “ON” position
STEP
TEST RESULT PROBABLE CAUSE AND CORRECTION
1
Solenoid
Solenoid plunger should
move from valve spool.
YES
NO
System OK
Check for battery voltage at solenoid wire
connection, if OK replace solenoid. If not OK go to
next step.
Set in seat and buckle seat belt in sequence, if not
OK check operation of seat belt buckle. If OK go to
next step.
Check wires from solenoid to EIC board, if OK go to
next step.
Check EIC board operation
Electronic instrument cluster (EIC) hydraulic oil
temperature light:
Pretest instructions:
* Hydraulic oil reservoir oil at proper oil level
* Operator in seat
* Service/Run switch in “RUN” position
* Seat belt fastened
* Ignition switch in the “ON” position
* Engine running half throttle, 1500 RPM
STEP
TEST RESULT PROBABLE CAUSE AND CORRECTION
1
Electronic instrument cluster
(EIC)
Hydraulic oil temperature light
should be off
YES
NO
System OK
Check hydraulic oil temperature, if OK go to step 3.
If not OK go to next step.
2
Check oil cooler and radiator for restricted air flow.
3
Check oil temperature sender for proper
operation.
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