
130 SEBU8213-04
Maintenance Section
Track - Check/Adjust
g011 52685
Illustration 199
(1) Date of
installation (retractor)
(2) Date of
installation (buckle)
(3) Date of
manufacture (tag) (fully extended web)
(4) Date of
manufacture (underside) (buckle)
Consult your Caterpillar dealer for the replacement of
the seat b
elt and the mounting hardware.
If your machine is equipped with a seat belt
extensio
n, also perform this replacement procedure
for the seat belt extension.
i02710408
Track - Ch eck/Ad just
SMCS Co
de: 4170-025; 4170-036
Check
g01266539
Illustration 200
Check the track adjustment. Check for wear and for
excessive dirt buildu p.
If tracks are too tight wear of the components
will accelerate. If tracks are too loose wear of the
components will accelerate.
1. Move the machine forward for a distance of
two times the length of the machine. Allow the
machinetostopwithouttheuseoftheservice
brake. Shut off the engine.
2. Standonthetra
ck between the front idler and the
track carrier roller in order to produce as much
track sag as possible.
g01161 092
Illustration 201
3. Measure the track sag in two places on each track.
a. Place a tight string or a straight edge on top
of the grousers between the carrier roller and
front idler. Measure the distance from the
straight edge to the grouser tip at the lowest
point of sag.
b. Place a tight string or a straight edge on top
of the grousers between the carrier roller
and sprocket. Measure the distance from the
straight edge to the grouser tip at the lowest
point of sag.
4. Total the two measurements. Refer to Table 14 in
order to determine the correct sag.
Table 14
Minimum Target Maximum
D3K, D4K,
D5k
50 mm
(2.0 inch)
60 mm
(2.36 inch)
70 mm
(2.75 inch)
5. If this dimension is not correct, adjust the track.
If the track appears to be too tight or too loose,
proceed to “Track Adjustment”.
Track Adjustment
Do not remove any parts until all pressure has
been relie ved to avoid possible personal injury.
Relieve pressure by opening relief valve one turn
maximum. See maintenance guide for track ad-
justment procedure.