TM 5-3805-292-23
0006
HYDRAULIC TROUBLESHOOTING - INCORRECT OR NO LOADER FUNCTION CONTINUED
K
Check for continuity between 18W
coil interlock valve solenoid
connector 103B-B, circuit 178UX
Perform Open Harness Test for
NO
(B), harness side, and ground (WP
present?
circuits 178TX and 178AN (WP 0173).
Circuits).
YES
Connect 18W coil interlock valve
solenoid connector 103B (WP
Use instrument panel (IP) setup to
Replace 18W coil interlock valve
Moving?
NO
energize loader valve interlock
solenoid (WP 0070).
circuit (WP 0007).
Check to see if 18W coil interlock
valve solenoid is moving.
YES
WARNING
DO NOT disconnect or remove any hydraulic system line or fitting unless engine is shut
o
down and hydraulic system pressure has been relieved. Tighten all connections before
applying pressure. Escaping hydraulic fluid under pressure can penetrate the skin.
Use a piece of cardboard, newspaper, or wood to check for pressurized leaks, to prevent
o
fluid penetrating the skin.
Contact with engine/hydraulic oil can damage skin. Wear gloves when handling engine/
o
hydraulic oil. If oil contacts skin, wash it off immediately. Failure to follow this warning may
result in injury to personnel.
Perform Loader Main Relief Valve
Problem
Stop.
NO
still exists?
Test and Adjustment (WP 0007).
YES
L
CONTINUED