Grove
Published 01-14-2021 Control # 707-01
8-47
TMS9000-2 SERVICE MANUAL
CARRIER
8
7.
Using a 3/4 inch wrench turn the release-nut clockwise
until 8.2 cm (3.25 in) length of bolt extends above the nut
(Figure 8-38). Do not use an impact wrench.
8.
For easier manual-releasing, apply 620 - 861.8 kPa (90 -
125 psi) air pressure to inlet port marked “SPRING
BRAKE” before Step 4, but make sure to exhaust all air
pressure after Steps 7 and 8.
9.
To reactivate the piggyback/spring brake from its
manually-released position, reverse the order of Steps 8
through 1.
10.
When re-installing the release-bolt, flatwasher and
release-nut into the storage pocket, apply 13.5 Nm
(10 lb-ft) torque on nut against the flatwasher
(Figure 8-39).
11.
Measure the distance from the center of the large clevis
to the air chamber mounting face with the brake fully
released. This is dimension “X” in (Figure 8-40).
12.
Using a pry bar, move the slack adjuster so that the
linings contact the drum. Measure the distance between
the same points as in step 11. This dimension is “Y” in
(Figure 8-40).
7092-5
FIGURE 8-38
WARNING
Death or Injury Could Occur!
There are no serviceable parts inside the spring brake
chamber. Never attempt to disassemble the spring brake
chamber as serious personal injury could result from
accidental sudden release of the high energy spring.
7092-6
FIGURE 8-39
Fo
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