Gunite

cen mm 42.06.000

Important: Perform Parking Brake Operational Check before lubricating the slack adjusters.

Automatic slack adjusters that have a grease fitting, must be lubricated periodically to ensure proper brake operation.

Warning: Failure to lubricate slack adjusters could lead to dragging brakes or a brake failure, resulting in property damage, personal injury, or death.

For operating temperatures of –20°F (–29°C) and higher, use Texaco Multifak EP-2 or Mobil Grease No. 77.

For operating temperatures between –20°F (–29°C) and –40°F (–40°C), use Lubriplate Aero grease.

Lubricate a Gunite automatic slack adjuster at the grease fitting until grease appears on the camshaft, or flows from the grease-relief. See Fig..

The newest Gunite automatic slack adjusters are produced without a grease-relief. During lubrication with a grease gun, lubricant is forced through the drilled worm wheel onto the camshaft. Lubricate the automatic slack adjuster at the grease fitting until grease appears on the camshaft. See Fig..

  1. 7/16-Inch Adjusting Nut

  2. Grease Fitting

  3. Boot

  4. Link

  5. Brake Chamber Piston Rod

  6. Clevis

  7. ½-Inch Clevis Pin

  8. 1/4-Inch Clevis Pin

  9. Grease-Relief Opening

  10. Slack Adjuster Spline

Fig. 1, Gunite Automatic Slack Adjuster

Note:
Parent topic: Lubrication of the Dana Spicer, Haldex, and Gunite Slack Adjuster
Document Number: 0000122415
Manual Publication Date: 2025-02-11
Topic Publication Date: 2024-06-04