TM 5-3805-280-24-1
Diagnostic Information
Symptom
Problem
Solution
Rotary manifold leakage
Inspect rotary manifold. See Group
0260.
Excavator Mistracks at All
Track sag adjustment
Adjust track sag. See Group
Speeds In Both Directions
9020-20.
Propel pilot controller malfunction
Inspect propel pilot controller. See
Group 3360.
Propel motor crossover relief valve
Do Crossover Relief Valve Test and
malfunction
Adjustment. See 9020-25.
Brake valve shuttle valve or servo
Inspect check valve and seat. See
piston shuttle valve seat leakage.
Group 0260.
Leakage in motor
Check tracking while descending a
hill. If tracking is within specification
when descending a hill, but not
when on the level or going up hill,
motor leakage is indicated. Do
Propel Motor Leakage Test. See
Group 9020-25.
Rotary manifold leakage
Inspect rotary manifold. See Group
0260.
9025
15
Front and rear pump regulators
Do pump regulators adjustment. See
22
Group 9025-25.
Slow Propel Speed or Low Power
Track sag adjustment
Adjust track sag. See Adjust Track
Sag in Group 9020-20.
Propel motor crossover relief valve
Do Crossover Relief Valve Test and
Adjustment. See Group 9020-25.
Propel brake not releasing
Inspect propel brake. See Group
0260.
Propel motor
Do Propel Motor Operating Leakage
Test. See Group 9020-25.
Rotary manifold leakage
Inspect rotary manifold. See Group
0260.
Continued on next page
TX,15,GG2235 1913AUG982/3
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