TM 5-3805-290-23-1
TROUBLESHOOTING SYMPTOM INDEX - CONTINUED
0007 00
TROUBLESHOOTING WITHOUT A DIAGNOSTIC CODE - CONTINUED
Malfunction/Symptom
Troubleshooting Procedure Page
Hydraulic System Troubleshooting
1.
Hydraulic Power is Low. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.
No Functions Will Operate or All Functions Operate Slowly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.
Pilot Oil Pressure is Low.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.
Piston Pump for Work Tools Will Not Reach High Pressure Cutoff. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5.
Standby Pressure Cannot be Adjusted Correctly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6.
Hydraulic Circuit is Hammering. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.
Boom Raises but Will Not Lower. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
8.
Boom Will Not Raise or Lower.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9.
Cannot Tilt Bucket in Either Direction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
10.
Oil Temperature is Too High.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
11.
There Are Air Bubbles in Oil. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
12.
Cycle Times Are Not Correct. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
13.
Quick Coupler Does Not Operate. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
14.
Ride Control Function Does Not Operate. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
15.
Implements Will Not Lower With Dead Engine Lower Valve. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
16.
Implement Drifts Downward. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Air Conditioning System Troubleshooting
1.
Temperature of Air Flow is Partially Cool. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.
Temperature of Air Flow is Warm. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.
System Only Cools Cab in Morning and in Evening, Not During Hot Part of Day.
Air Flow is Very Cold but Air Flow Becomes Warm. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.
High Pressure (Liquid Line) is Very Hot. Compressor May Become Noisy and Drive Belt May Slip. . . . . . . .
5.
Water is in Vents and Leaking from Unit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6.
Compressor Will Not Engage. Air Flow to Operator's Compartment is Warm. . . . . . . . . . . . . . . . . . . . . . . . . .
7.
Compressor Continues to Cycle or Clutch Will Not Disengage. Air Flow to Operator's
Compartment is Very Cold or Air Flow May be Restricted Completely at Times. . . . . . . . . . . . . . . . . . . . . .
8.
Compressor Clutch is Engaged but System Has Insufficient Cooling. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
0007 00-4
