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Manifolds and Hydraulic Pumps
5.8-11 Test Forward Drive Pressure on
Drive Pump
NOTE
Make sure the charge pump pressure test is
completed first.
1. Locate test port TP1
2. Connect a pressure gauge (700 bar / 10000 psi)
to test port TP1.
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3. Start the engine from the platform control
console.
4. Unplug the brake solenoid power cable (26) on
the brake valve.
5. Activate the drive function slowly forward with
the engine at high speed. The wheels should not
turn.
NOTE
Activating the drive function too quickly will stall
the engine.
6. Check the reading on the gauge. The standard
pressure should be 345 bar (5000 psi).
7. Replace the pump if the pressure is not
achieved.
8. Turn the engine off.
9. Remove the pressure gauge from the port, cap
the port, and re-plug the brake solenoid power
cable.
SJ85 AJ
on the drive pump.
1
5.8-12 Test Reverse Drive Pressure on
Drive Pump
NOTE
Make sure the charge pump pressure test is
completed first.
1. Locate test port TP2
2. Connect a pressure gauge (700 bar / 10000 psi)
to test port TP2.
WARNING
To protect the gauge, do not activate any controls
during this procedure.
3. Start the engine from the platform control
console.
4. Unplug the brake solenoid power cable (26) on
the brake valve.
5. Activate the drive function slowly in reverse with
the engine at high speed. The wheels should not
turn.
NOTE
Activating the drive function too quickly will stall
the engine.
6. Check the reading on the gauge. The standard
pressure should be 345 bar (5000 psi).
7. Replace the pump if the pressure is not
achieved.
8. Turn the engine off.
Section 5 – Procedures
on the drive pump.
2
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229044ADA
201
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