TM 5-3805-280-24-1
Diagnostic Information
Arm I Power Passage Check
Arm I Neutral Passage Check
Flow Combiner Valve
Valve and Restriction Orifice
Valve and Restriction Orifice
Operational Function
To supply oil to left and right propel
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spools during combined operation of
dig and propel functions.
Control Problems
Sticking or stuck spool. Oil is
Oil from left control valve power
Oil from right control valve
insufficient or not supplied to left
passage insufficient or not supplied
neutral passage insufficient or
propel spool.
to arm I spool.
not supplied to arm I spool.
Machine Symptoms
While traveling straight, machine
Arm speed slow when leveling.
When check valve is stuck
mistracks when swing is actuated.
closed or orifice clogged, arm
speed is slow when leveling
Laptop Computer with
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--
Excavator Diagnostic
Software Self-Diagnostic
Functions
Laptop Computer with
--
--
--
Excavator Diagnostic
Software Monitoring
Function
Harness Check
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--
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Notes
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Description of Operation
See Flow Combiner Valve Operation
See Control Valve Circuit Schematic
See Control Valve Circuit
in Group 9025-05.
in Group 9025-05.
Schematic in Group 9025-05.
9025
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TX,15,GG2238 1913AUG988/10
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