Skyjack SJ61T Service Manual

Page 218 December 2007
Telescopic Boom Series
Models SJ61T & SJ66T
194312
Section 5 - ProceduresService and Maintenance
5.8-9 Test Forward Drive Pressure on
Drive Pump
NOTE
Make sure charge pump pressure test is
completed rst.
1. Locate test port TP1 on the drive pump.
2. Connect a pressure gauge (10000 psi) to
test port TP1.
TP1
Drive Pump - TP1
3. Start the engine from the platform control
console.
4. Unplug brake solenoid power cable (26) on
brake valve.
5. Activate the drive function slowly forward
with engine at high speed. Wheels should
not turn.
NOTE
Activating drive function too fast will stall
the engine.
6. Check the reading on the gauges. Standard
pressure should be 5000 psi. Go to step 8 if
pump pressure is achieved.
7. Replace pump if pressure is not achieved.
8. Turn engine off.
9. Remove pressure gauge from port, cap
the port and re-plug brake solenoid power
cable.
5.8-10 Test Reverse Drive Pressure on
Drive Pump
NOTE
Make sure charge pump pressure test is
completed rst.
1. Locate test port 2 on the drive pump.
Drive Pump - TP2
TP2
2. Connect a pressure gauge (10000 psi) to
test port 2.
WARNING
Do not activate any controls during
procedure to protect gauge.
3. Start the engine from the platform control
console.
4. Unplug brake solenoid power cable (26) on
the brake valve.
5. Activate the drive function slowly reverse
with engine at high speed. Wheels should
not turn.
NOTE
Activating drive function too fast will stall
the engine.
6. Check the reading on the gauges. Standard
pressure should be 5000 psi. Go to step 8 if
pump pressure is achieved.
7. Replace pump if pressure is not achieved.
8. Turn engine off.

Skyjack SJ61T Specifications

General

Brand	Skyjack
Model	SJ61T
Category	Lifting Systems
Language	English