TM 5-3805-298-23-2
0152
Table 1. Quick Coupler Will Not Operate - Continued.
0152
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Quick Coupler Will Not
3. Using digital multimeter
Resistance 5.0 Ohms or Less
Operate - Continued
(WP 0174), measure resistance
Replace front frame wiring harness
between connector C-C9
(WP 0301).
(WP 0012, Figure 153) terminal 11
Proceed to Test Step 15.
and connector C-C10 (WP 0012,
Resistance Greater Than 5.0 Ohms
Figure 86) terminal 12.
Replace lower cab wiring harness
(WP 0291).
Proceed to Test Step 15.
Test Step 15. Verify Malfunction Is
Resolved.
1. Turn ignition switch and battery
disconnect switch to OFF position
(TM 5-3805-298-10).
2. Ensure all hydraulic hoses are
connected.
3. Ensure all wiring harness
connectors are connected.
4. Install right lower cab access
panels (WP 0347).
5. Install console instrument panel
(WP 0264).
6. Turn battery disconnect switch to
ON position and start engine
(TM 5-3805-298-10).
7. Warm the transmission oil to
normal operating temperature of
approximately 165F to 185F
(75C to 85C).
8. Bring the hydraulic oil to operating
temperature of 140F (60C)
(TM 5-3805-298-10).
9. Lower the tool to the ground
(TM 5-3805-298-10).
10. Press unlock on coupler switch
(TM 5-3805-298-10).
11. Observe operation of quick coupler
Quick Coupler Releases Tool
(TM 5-3805-298-10).
Proceed to step 12.
Quick Coupler Does Not Release
Tool Repeat troubleshooting from
the beginning.
12. Press lock on coupler switch
(TM 5-3805-298-10).
0152-8
