TM 5-3805-280-24-1
Operational Checkout Procedure
4 UNDERCARRIAGE CHECKS
9005
1/1
10
19
TRACK SAG ROLLER
YES: Repair or replace
AND IDLER LEAKAGE
idlers or rollers that are
CHECKS
leaking. Go to Group
0130.
NO: Go to next check.
T6915AN
UN07APR89
T7850AI
UN22OCT92
Swing upperstructure to side and raise track off ground.
Operate track in reverse.
Stop engine.
Measure distance between top of track shoe to center of lower surface of track frame.
Track sag specifications:
Normal Soil--Specification
Track Sag ............................................................. 300--335 mm (11-13/16--13-3/16 in.)
Check rollers and idlers for oil leaks.
Is oil leaking from rollers or idlers?
Raise other side of machine and repeat checks.
NOTE: If track sag is less than specified, track chain wear will be accelerated. If it is
more or less than specified on one side only, the machine may mistrack.
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