General Information, Camshaft Bracket Lubrication

P4 MM 42.07; 5th Generation Cascadia MM
Important: Perform a brake inspection before lubricating the camshaft bracket.
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. The extended-maintenance camshaft bushings are lubricated during the brake reline service interval. For service and lubrication instructions, see the vehicle 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. . Follow the steps below for proper greasing.

  • Grease exit.

  1. Brake Chamber

  2. Slack Adjuster

  3. 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. See General Description, Meritor WABCO Antilock Braking System, ABS in the New Cascadia 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.
Note:
Parent topic: Lubrication of the Meritor Camshaft Bracket
Document Number: 0000103294
Manual Publication Date: 2025-07-14
Topic Publication Date: 2026-05-06