TM 10-3930-675-24-2
HYDRAULIC SYSTEM TEST POINT PROCEDURES - CONTINUED
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TEST POINT NO. 5: BRAKE CIRCUIT NO. 1
NOTE
1.
Connect hydraulic test gage to test point no. 5.
2.
Start engine. Press brake pedal. Pressure will jump to 1,450 psi (100 bar).
3.
Shut engine off. Release brake pedal. Disconnect hydraulic test gage from test point no. 5.
TEST POINT NO. 6: STEERING PUMP NO. 1
NOTE
1.
Connect hydraulic test gage to test point no. 6.
2.
Start engine. Pressure will be 260 psi (18 bar). After 5 seconds, pressure will jump to 3,045 psi (210 bar).
3.
Shut engine off. Disconnect hydraulic test gage from test point no. 6.
TEST POINT NO. 7: STEERING PUMP NO. 2
NOTE
Test point no. 7 provides a means to check steering pump no. 2 operating pressures.
1.
Connect hydraulic test gage to test point no. 7.
2.
Start engine. Pressure will be 260 psi (18 bar). After 5 seconds pressure will jump to 3,045 psi (210 bar).
3.
Shut down engine. Disconnect hydraulic test gage from test point no. 7.
TEST POINT NO. 8: BOOM LIFT/EXTEND MAIN VALVE
NOTE
Test point no. 8 provides a means to check boom lift and extend main valve operating pressure.
1.
Connect hydraulic test gage to test point no. 8.
2.
Start engine. Press throttle and hold at 1,500 RPM.
3.
Fully retract boom and hold. Pressure will build to 3,480 psi (240 bar).
4.
Release joystick. Release throttle. Shut engine off.
5.
Disconnect hydraulic test gage from test point no. 8.
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