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Note: If equipped with an extended-maintenance
Q Plus™ brake system, the camshaft bracket will not have a grease
fitting. These camshafts use a special NLGI grade synthetic polyurea
grease, and do not require lubrication for 3 years or 500,000 miles
(800 000 km), whichever comes first. Extended-maintenance camshaft
bushings are lubricated during the brake reline service interval.
For service and lubrication instructions, see General Information, Meritor WABCO Pneumatic Antilock Braking
System (ABS) in the Business Class® M2 Workshop Manual .
For camshaft brackets with grease fittings, use an NLGI Grade 1
or Grade 2 multipurpose chassis grease.
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. .
Grease Exit
Brake Chamber
Slack Adjuster
Non-Pressure-Relief Grease Fitting
Fig. 1,
Camshaft Bracket Lubrication
Warning: If grease leaks out under the camhead, the camshaft
bracket grease seal is worn or damaged. SeeGeneral Information, Meritor WABCO Pneumatic Antilock Braking
System (ABS) in 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 damage.
