TM 5-3805-292-23
0006
ELECTRICAL TROUBLESHOOTING - EC001 HYDRAULIC CHARGE PRESSURE IS TOO LOW CONTINUED
N
Check for continuity between
charge pressure switch 30-A,
Repair circuit 178 (B) or replace chassis
circuit 178AU (B), harness side,
NO
present?
wiring harness (WP 0146).
Miscellaneous Circuits).
YES
Repair or replace brake pilot valve
Disassemble/inspect brake pilot
Damaged?
YES
valve (WP 0070).
NO
Perform Checks To Perform
Problem
Before Troubleshooting
Stop.
NO
still exists?
Hydrostatic System (WP 0007).
YES
Perform Checking DA Pressure
Problem
Stop.
NO
still exists?
YES
Perform Checking Charge
Problem
Stop.
NO
Pressure/Flow (WP 0007).
still exists?
YES
Perform Checking Circuit Relief
Pressure
Stop.
NO
Valve Pressure (WP 0007).
still low?
YES
Cap two large lines at drive
Pressure
Replace drive motor in question
motor in question and repeat
NO
circuit relief pressure check
still low?
YES
Replace tandem pump
