Extreme Clipping
Shoes may have the grouser corners cut
off to reduce turning resistance and bend-
ing force without loss of flotation and with
little loss of overall wear life.
Center Holes
Shoes may have a hole cut between the
bolts to provide another place to relieve
extrudable type packing material. (See
discussion on Extrudable and Non-extrud-
able Material under “Soil and Underfoot
Conditions — Packing”). Should not be
done in rocky conditions due to possible
entry of rocks into track.
Correctly Fasten Shoes
The principle controllable cause of shoe
loosening is inadequately tightened shoe
hardware. Refer to the special procedure
for master shoes for split master links and
shoes on page 33. Use the following
procedure to tighten and retighten regular
track bolts. When experience dictates,
track hardware should be re-tightened
after 50-100 hours of operation.
1. Remove all rust and paint from mating
surfaces of links and shoes.
2. Lubricate the bolt threads and bolt
washer faces.
3. Tighten the bolts to the specified torque.
4. Give each bolt an additional 1/3 turn.
Initial torque draws the parts together
tightly. An additional 1/3 turn gives the
bolt proper stretch for good retention.
Stretching stresses the bolt until some
permanent deformation occurs. The defor-
mation insures that the bolt’s maximum
clamping force is used.
NOTE: See Individual Model Family
Sections for Shoe Bolt Torque Specifi-
cations.
Self-Locking Track Nuts
Self-Locking Track Nuts are installed with
the Rounded Corners against the link, the
Chamfered Edges away from the link.