User's Manual

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Table 7. Camshaft Bushing Installation Specifi cations
Note:

Brake Model At Cam Head At Brake Adjuster
 
 
   
 
 
   
   
   
   
  
  
  
NOTE:

Camshaft Bushing/Lining Replacement
Figure 45. Camshaft Bushing Installation
Figure 44. Air Chamber Bracket Bushing Installation
Repair / Replacement
Spider / Air Chamber &
Brake Adjuster Inspection
Routinely replace lower-cost items such as springs, seals,
bushings, and heavily-worn but unbroken parts since the
damage caused, should these components fail, is far in excess
of their cost.
Camshaft Bushing/Grease Seal Replacement
1.Removal / Disassembly - Air
Chamber Bracket Removal.
2.
3. Inspection - Air
Chamber Bracket Inspection.
4.


5.


CAUTION: Seals must be installed as indicated so that
lip side (with spring) of both seals faces toward brake
adjuster end of bracket. Improperly oriented seals may
allow grease to exit camshaft head end of air chamber
bracket and contaminate lining material.
At Brake Adjuster
End, Recess Bushing
22/32" (17.5 mm)
At Cam Head End,
Recess Bushing
9/32" (7.1 mm)
All Brakes, Except Trailer Axles
Lip Side of Both Seals
Must Face Toward Brake
Adjuster End of Bracket
Install Seals Flush
With End of Tube