freightliner BUSINESS CLASS M2 100, Maintenance Manual

Page: 129 / 198

Lubricate the camshaft bushings through the grease
fitting on the camshaft bracket or the spider until new
grease flows from the inboard seal. See
Fig. 7 .
WARNING
If grease leaks out under the camhead, the cam-
shaft bracket grease seal is worn or damaged. See
Group 42 of the
Business Class® M2 Workshop
Manual for 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 dam-
age.
42–07 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.
f420653a
1
2
3
4
5
6
7
8
10
9
10/27/93
1. 7/16-Inch Adjusting
Nut
2. Grease Fitting
3. Boot
4. Link
5. Brake Chamber Piston
Rod
6. Clevis
7. 1/2-Inch Clevis Pin
8. 1/4-Inch Clevis Pin
9. Grease Relief
Opening
10. Slack Adjuster Spline
Fig. 6, Gunite Automatic Slack Adjuster
f420011a 10/07/2016
1
2
3
A
A. Grease Exit
1.
Brake Chamber
2. Slack Adjuster
3. Non-Pressure-Relief Grease Fitting
Fig. 7, Camshaft Bracket Lubrication
Brakes
42
Business Class M2 Maintenance Manual, November 2019
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