
168
Maintenance Section (D6T LGP (OEM)) WEBM1000
Track Pins - Inspect
238
Illustration 238
2. Add multipurpose grease (MPGM) through track
adjustment valve (1). Add the MPGM until
dimension (A, B) is correct.
3. O
perate the machine back and forth in order to
equa
lize the pressure. Allow the machine to
coast to a complete stop. Do not use the brakes.
4. Rem
easure dimension (C).
Referen
ce: See Oper
ation and Maintenance
Manual, “Front Idler Position - Check” for additional
information on System One Undercarriage.
Tight Track Adjustment
1. Loosen relief valve (2) by one turn of 360
degrees. Allow the grease to escape.
2. Close the relief valve. Tigh
ten the valve to a
torque of 34 7 N·m (25 5 lb ft).
3. Add MPGM through track adjustment valve (1).
Add gr
ease until dimension (A, B, C) is correct.
4. Install the access cover.
Bolt Torque for Track Shoes
SystemOne Undercarriage
The track shoe bolts are 22.0 mm (0.87 inch). The
torque requirement for track shoe bolts is 500 70
N·m (370 50 lb ft). Tighten the bolts by an
additional turn of 120 degrees. If you are using bolts
with a master link, tighten the master bolts to a
torque of 500 70 N·m (370 50 lb ft). Then, turn
each bolt by an additional turn of 180 degrees.
Track Pins - Inspect
Fingers can be burned from hot pins and
bushings.
The pins and bushings in a dry joint can become
very hot. It is possible to burn the fingers if there
is more than brief contact with these
components.
Use the recommendations in order to extend the life
of the undercarriage. Use the recommendations in
order to avoid excessive downtime.
1. Dur
ing the machine operation, listen for unusual
squeaking an
d for unusual squealing. This noise
can indicate a dry joint.
2. Ch
eck the machine for dry joints weekly
. Check
for dry joints immediately after machine
operation. After machine operation, lightly touch
the end of each track pin or bushing. Touch the
track pin or the track bushing with the back of
your hand. Make a mark on any dry track pin
joint that is hot to the touch.
Consult the Custom Track Service expert at any Cat
de
aler if you
detect dry joints or leaks. The Custom
Track Service expert at the Cat dealer can perform
track inspection.
Track Roller Frame Guides -
Inspect
Measure the rotational movement of the front roller
frame relative to the rear roller frame.
239
Illustration 239
Some components are removed for clarity.