Meritor

sd mm 42.06.002
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 synthetic polyurea grease, and do not require lubrication for 3 years or 500,000 miles (800 000 km), whichever comes first. Extended-maintenance slack adjusters are lubricated during the brake reline service interval. For service and lubrication instructions, see  in the 108SD and 114SD Workshop Manual.

For slack adjusters with grease fittings and for operating 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 operating temperatures below –40°F (–40°C) and above –65°F (–54°C), use an NLGI Grade 2 synthetic oil or a 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 Fig. .

  1. Brake Chamber

  2. Clevis

  3. Actuator Rod

  4. Boot

  5. Pull-Pawl Seal

  6. Manual Adjusting Nut

  7. Grease Fitting (or plug)

Fig. 1, Meritor Automatic Slack Adjuster

Note:
Parent topic: Slack Adjuster Lubrication
Document Number: 0000120468
Manual Publication Date: 2024-05-23
Topic Publication Date: 2025-12-08