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TM 9-2320-364-20-4
2-3170
KNOWN INFO
POSSIBLE PROBLEMS
TEST OPTIONS
REASON FOR QUESTION
NO
4.
WARNING
Read WARNING
on Page 2-3171
YES
Replace CHU control
box (Para 21-21).
Verify repair, go to
Step 6 of this Fault.
CHU jumper wire harness OK.
Mode switch properly
adjusted.
Mode switch OK.
CHU wire harness OK.
Is continuity present between
wire 1495 at relay R50, termi-
nal 85 and connector MC185,
terminal D?
Continuity test.
The ground circuit for relay R50
is through wire 1495. If wire
1495 is open, the CHU relay will
not function.
CHU control box faulty.
Wire 1495 faulty.
4. CHU MODE SWITCH INOPERATIVE (LIFTING FRAME
CONTACTS REAR ROLLERS) (CONT).
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