Table 2-1. Preventive Maintenance Checks and Services (Cont)
Item to be
Check brake lining to brake drum clearance
i. Brake shoe
along centerline of shoe at scallop to ensure
adjustment is out
automatic adjusters are functioning properly.
Clearance should be 0.020-0.040 in. (0.051-
0.102 cm) maximum.
Do not allow grease or oil to contact
brake linings. Linings can absorb grease
and oil, causing early glazing and very
poor braking action. Failure to comply
may result in serious injury or death to
Examine brake shoes for excessive brake
j. Brake linings
lining wear and cracking (para 11-2 and 11-
are cracked or
Inspect brake shoe return springs and hold-
k. Springs or
down clips for cracks.
clips are cracked