grease seal replacement instructions. If this seal
is not replaced, the brake linings could become
contaminated with grease. The stopping distance
of the vehicle will be increased, which could result
in personal injury or property damage.
Steer Axle S-cam Tube Greasing
1.
Park the vehicle on a level surface, shut down
the engine, and set the park brake.
2.
Chock the drive-axle tires.
3.
Chock steer-axle tires.
4.
Grease the S-cam tubes.
Drive Axle S-cam Tube Greasing
1.
Park the vehicle on a level surface, shut down
the engine, and set the park brake.
2.
Chock the front tires.
3.
Chock one drive tire.
4.
Cage the drive tire park-brake chamber opposite
of the tire that is chocked.
5.
Grease the S-cam tube on the caged park-brake
chamber side only.
6.
Uncage the park-brake chamber.
7.
Move the drive tire chock to the other side of the
axle and chock the other set of tires.
8.
Cage the drive-tire park-brake chamber opposite
of the tire that is chocked.
9.
Grease the S-cam tube on the caged brake side
only.
10. Uncage the park-brake chamber.
11. If equipped with more than one drive-axle, repeat
this process for the remaining drive-axle.
42–08 Meritor Slack Adjuster
Lubrication
IMPORTANT: Perform a brake inspection follow-
ing the instructions in this group before lubricat-
ing the slack adjusters.
WARNING
Failure to lubricate slack adjusters could lead to
dragging brakes or a brake failure, resulting in
property damage, personal injury, or death.
NOTE: If equipped with an extended-
maintenance Q Plus
™
brake system, the slack
adjuster will not have a grease fitting. These
slack adjusters use a special NLGI Grade syn-
thetic polyurea grease and do not require lubri-
cation for 3 years or 500,000 miles (800 000
km), whichever comes first. The extended-
maintenance slack adjusters are lubricated dur-
ing the brake reline service interval. For service
and lubrication instructions, see
Group 42
of
the vehicle Workshop Manual.
For slack adjusters with grease fittings and for oper-
ating temperatures above –40°F (–40°C), use an
NLGI Grade 1 clay-base grease, or an NLGI Grade 1
or 2 lithium-base grease.
For slack adjusters with grease fittings and for oper-
ating temperatures below –40°F (–40°C) and above
–65°F (–54°C), use an NLGI Grade 2 synthetic oil,
clay-base grease.
Lubricate the slack adjuster at the grease fitting until
grease is forced past the pressure-relief capscrew or
past the gear splines around the inboard snap ring.
See
. Follow the steps below for proper
greasing.
Steer Axle Slack Adjuster
Greasing
1.
Park the vehicle on a level surface, shut down
the engine, and set the park brake.
2.
Chock the drive-axle tires.
3.
Chock steer-axle tires.
4.
Grease the slack adjuster.
Drive Axle Slack Adjuster
Greasing
1.
Park the vehicle on a level surface, shut down
the engine, and set the park brake.
2.
Chock the front tires.
3.
Chock one drive-axle tire.
Brakes
42
New Cascadia Maintenance Manual, January 2020
42/13
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