Grove
Published 01-14-2021 Control # 707-01
8-55
TMS9000-2 SERVICE MANUAL
CARRIER
8
Rear Brake Assembly
The rear brakes are air actuated and cam operated with two
shoes. Each shoe is mounted on separate anchor pins and
has open anchor pin ends for easy removal. There are two
shoe retainer springs in addition to the shoe return springs.
NOTE:
For information on the ABS speed sensors refer to
Wheel Speed Sensor, Replacement (Rear), page
8-82.
Disassemble Brakes
1.
Raise the crane on outriggers so that the rear wheels
are off the ground.
2.
Place jack stands under the frame where the wheels are
to be removed.
3.
Cage the spring brake with the caging bolt provided.
4.
Fully release the slack adjuster so that the shoes retract
allowing the drums to clear the linings. To retract the
slack adjuster, do the following:
a.
Remove the pawl assembly to keep the pawl teeth
from being damaged.
b.
Turn the manual adjusting nut until the brake shoe is
fully retracted.
c.
Install the pawl assembly into the slack adjuster.
5.
Remove the brake drum.
Brake Shoe Removal
1.
Push down on the bottom brake shoe and pull on the
roller retaining clip to remove the bottom cam roller
(Figure 8-51).
2.
Lift the top shoe and pull on the roller retaining clip and
remove the upper cam roller (Figure 8-51).
3.
Lift the bottom shoe to release the tension on the brake
return spring and remove the spring (Figure 8-52).
4.
Rotate the bottom shoe to relieve tension on the
retaining springs (Figure 8-53). Remove the springs and
brake shoes.
WARNING
Death or Injury Could Occur!
Do not attempt to do any type of work under a crane that
is supported by only the outriggers or jacks.
Clamp
Diaphragm
Push Rod
Spring
Shield
Cover
Jam Nut
Mounting Nut
7093-5d
FIGURE 8-50
Cam Roller
and Retainer
Spring.
7093-5e
FIGURE 8-51
Brake
Return
Spring
7093-5f
FIGURE 8-52
Fo
r
Reference
Only
