Great Plains TCN5313 Operator Manual - Manual (Page 57)

Great Plains Manufacturing, Inc. Maintenance and Lubrication 53
03/17/2014 566-170M
Brake Shoe Replacement
Check brakes for wear, contamination and damage sea-
sonally or every 9600 km (6000 miles).
1. Prior to commencing work, review the safety informa-
tion on page 51. Have necessary safety equipment
and tools on hand. Make sure workers understand
the hazards and how to avoid them.
2. Review the entire procedure. Great Plains suggests
performing a complete operation on one wheel, or
one pair of wheels, at a time, so that there are fully-
assembled wheels to use as an assembly reference.
3. Spot the machine on a level surface. Unfold the
machine.
4. Block the wing and rear machine tires to prevent
movement. Do not set the machine’s own parking
brakes, as the drums cannot be removed with the
brakes.
Refer to Figure 48
5.
If left hitched, put the tractor transmission in Park,
release tractor service and parking breaks, and dis-
connect the trailer brakes at the hitch. Set tractor
parking brake only after trailer brake disconnection
If unhitched, release air brakes by opening dump
valve
. Pull down on cap to release. Push up.
6. Jack up and support one or both machine transport
axles.
7. Be wearing and using recommended safety equip-
ment for the remainder of these procedures.
8. Spin the wheels, checking for evidence of excess run-
out at the braking surface of the drums.
9. Remove wheels. If you have more than one wheel
removed at a time, mark on them where they came
from (L/R and inside/outside), as the tire tread pattern
is direct.
Possible Asbestos Hazard:
If you are unable to confirm that you are removing and install-
ing Great Plains approved parts, you may have linings that
contain asbestos. Some aftermarket brake shoes may contain
asbestos, and require strict, complex and costly safety proce-
dures not covered in this manual.
If shoe replacement is indicated, use only parts supplied or
recommended by Great Plains. The original brake linings, and
Great Plains supplied or approved linings contain no asbestos.
Unapproved parts may also appear to fit, but will not function
correctly.
Note: Inspection of the brakes may also reveal a need to
refinish drums and/or replace other brake parts. Al-
though not strictly part of brake maintenance, you
may need to repack bearings (generally the outer),
and it may be necessary to replace a worn or dam-
aged inner seal (and repack the inner bearing).
1
Figure 48
Air Brake Dump Valve
41998
1