TM 5-3805-281-24-1
Operational Checkout Procedure
4 UNDERCARRIAGE CHECKS
9005
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10
20
TRACK SAG, ROLLER
YES: Repair or replace
AND IDLER LEAKAGE
idles 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.
Slowly turn track forward for two revolution then in reverse for two revolution. Stop
track while turning in reverse so all track sag is at the bottom.
Stop engine.
Measure distance between top of track shoe to center of lower surface of track frame.
Track (330LCR)--Specification
Sag ................................................................................... 340--380 mm (13-3/8--15 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 more or less than specified, track chain wear will be accelerated.
If track sag is more or less than specified on one side only, the machine may mistrack.
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