P r e v e n t i v e M a i n t e n a n c e C h e c k s a n d S e r v i c e s f o r M 4 8 A 5 A V L B H u l l -
and Hubs (Left
and Right Sides)
C o n t i n u ed
Not Fully Mission
Dry Cleaning Solvent P-D-680 is toxic and flammable. To avoid
injury, wear protective goggles and gloves and use in a well-ventilated
area. Avoid contact with skin, eyes, and clothes, and do not breathe
vapors. Do not use near open fire or excessive heat. The flash point for
Type I Dry Cleaning Solvent is 100°F (38°C), and for Type II is 140°F
(60°C). If you become dizzy while using Dry Cleaning Solvent, get fresh
air immediately and get medical aid. If contact with eyes is made, wash
your eyes with water and get medical aid immediately.
Compressed air for cleaning purposes should not exceed 30 psi. Use
only with effective chip guarding and personal protective equipment
(goggles/shield, gloves, etc.).
Check compensating idler wheel
bearings and roadwheel bearings re-
lief fittings for proper operation.
Plunger type fittings are checked by
pulling up on plunger. Plunger
should move freely. Ball-type fittings
should be checked to ensure that the
two relief ports are open. If plunger
does not move freely or relief ports
are not open, remove and thoroughly
clean in dry cleaning solvent (P-D-
680). Dry with compressed air or lint
free cloth. Verify that ball moves
and ports are open.
Apply lubricant until it appears at
lubricant pressure fitting. No lubri-
cant should appear at seal assembly.
Wipe off excess lubricant from relief