The following is a list of problems, and possible solutions, which might occur to the room extension systems.
1. HYDRAULIC PUMP WILL NOT ACTIVATE WHEN ROOM
TROUBLE SHOOTING
MP55.03
05MAY99
B. A JACK WARNING LIGHT is not on.
E. 12 VOLT power to pump relay not present.
D. PUMP RELAY and/or HYDRAULIC PUMP are not
F. Faulty wire, electrical connection, KEY SWITCH,
2. HYDRAULIC PUMP ACTIVATES, BUT ROOM WILL NOT
A. EXTEND SOLENOID VALVE is not properly grounded.
B. Reservoir oil supply is low.
C. Hydraulic line is pinched or broken.
D. Faulty wire, electrical connection, ROOM CONTROL
PUMP, or HYDRAULIC CYLINDER.
3. HYDRAULIC PUMP ACTIVATES, BUT ROOM WILL NOT
A. RETRACT SOLENOID VALVE IS NOT properly
B. Reservoir oil supply is low.
C. Hydraulic line is pinched or broken.
D. Faulty wire, electrical connection, ROOM CONTROL
PUMP, or HYDRAULIC CYLINDER.
4. ROOM CREEPS OUT AFTER CLOSING.
A. "T" HANDLE on EXTEND SOLENOID VALVE is not
B. EXTEND SOLENOID VALVE has an internal leak.
C. HYDRAULIC CYLINDER has an internal leak.
A. "T" HANDLE on RETRACT SOLENOID VALVE is not closed
B. RETRACT SOLENOID VALVE has an internal leak.
ROOM EXTENSION
CONTROL SWITCH IS PRESSED.
properly grounded.
ROOM CONTROL SWITCH, PUMP RELAY, or PUMP
EXTEND.
SWITCH , EXTEND SOLENOID VALVE, HYDRAULIC
RETRACT.
SWITCH , RETRACT SOLENOID VALVE, HYDRAULIC
closed completely.
completely.
A. KEY SWITCH is in the "OFF" POSITION.
C. FUSE is blown.
D. The MANIFOLD CHECK VALVE is leaking.
NOTE :
MOTOR.
grounded.
5. ROOM CREEPS IN AFTER BEING EXTENDED.
Only qualified technicians should install or repair room systems. A knowledge of hydraulic, welding, the vehicle,s sus-
pension and electrical systems is required. In addition, an understanding of the room extensions system,s hydraulics and elec-
tronics is required.
