STINAR 25781, Operation & Maintenance Manual

Page: 66 / 112

Disabled Passenger Lift DPT-512 | 66
SECTION 2 | SERVICING THE HIGH LIFT TRUCK
TROUBLE PROBABLE CAUSE SOLUTION
Hydraulic pump will
not engage.
Defective pump clutch
or coil. Repair or replace
clutch.
Defective body or
stabilizers control
switch.
Replace switch.
Defective relay K13. Repair/replace relay.
Defective circuit
breaker CB5. Replace circuit
breaker.
No control power.
Defective parking brake
switch.
Replace switch.
Relay K10 is defective. Replace relay.
Circuit breaker CB4
defective. Replace the circuit
breaker.
Stabilizer legs will
not extend when
stabilizers down
switch is engaged.
Body not fully lowered. Lower van body.
No control power.
Set parking brake, put
transmission in park,
and check stop switch
in van body.
Defective control
valve stabilizers down
solenoid.
Replace solenoid.
Defective stabilizers Replace switch.
control switch.
Stabilizer legs extend,
but will not retract.
Body not fully lowered. Lower van body.
Defective body position
switch.
Repair/replace switch.
Defective control valve
stabilizers up solenoid.
Replace solenoid.
Cab and van
stabilizers down
indicators do not
function properly.
Stabilizer limit
switch(es) improperly
adjusted or defective. Adjust, repair,
or replace limit
switch(es).
Defective indicator
light. Repair or replace
indicator.
Cab and van
stabilizers set
indicators do not
function properly.
Stabilizer pressure
switch improperly
adjusted or defective.
Adjust or replace
switch. See
Chapter 2, Section 3.
Defective indicator
light. Repair or replace
indicator.
NOTE:
The truck cannot be driven
when the stabilizers down
indicator is lit.