Drive Sprocket Rollers - Terex PT-100G Forestry Service Manual

PT-100G
4-11

Drive Sprocket Rollers

Terex compact track loaders utilize rollers on the drive
sprockets to drive the track. These rollers help
minimize friction between the track and the drive
sprocket to prolong track life.
The rollers rotate around hardened steel pins and
usually wear on their inside surfaces. As they wear, the
rollers become thinner, but will continue to function as
long as they rotate freely around the pins. Sprocket
rollers should be inspected every 50 hours of operation
and replaced if cracked or worn to less than 35% of
original thickness. (.088" / .22cm)
To replace worn rollers: (fig. 4-11)
1. Begin by performing steps 1-4 in the track removal
procedure on page 4-6 to allow the sprocket to be
removed.
2. Remove the sprocket mounting bolts (2) to release
sprocket from drive motor; then remove the
sprocket.
Note: You may need to pry or lift the track upwards
with a hoist above the drive sprocket to provide
clearance for removal.
3. Remove one bolt (4) holding the steel pins (11)
and rollers (12) in place.
4. Install the new rollers over the pins, then slide the
bolt back through the sprocket and pins and
secure it with the nut (9).
4-11a
5. Repeat this process as required throughout the
sprocket.
6. Reinstall the sprocket by reversing steps 2-3.
7. Repeat steps 1-5 on the other side of the machine
if necessary.
8. Perform the track tension adjustment and check
procedures on page 4-4.
Note: Replace rollers as a set to simplify inspection
and maintain proper sprocket function.
4-5
Compact Track Loader
4. Maintenance
Steel Pin
New Roller
Normal Wear
50% life
(.088")