TRANSFER CASE MAINTENANCE (ALL EXCEPT M1028A1 AND M1031)
CLEANING AND INSPECTION
l Dry cleaning solvent P-D-680 is toxic and flammable. Always wear
protective goggles and gloves and use only in a well-ventilated area.
Avoid contact with skin, eyes, and clothes and DO NOT breathe vapors.
DO NOT use near open flame or excessive heat. The solvents flash
point is 100°F-138°F (38°C-59°C). If you become dizzy while using
cleaning solvent, immediately get fresh air and medical help. If solvent
contacts eyes, immediately wash your eyes with water and get medical
l Compressed air used for cleaning purposes should never exceed 30 psi
(207 kPa). Use only effective chip guarding and personnel protective
equipment (goggles/shield, gloves, etc.). Failure to follow this warning
may result in injury to personnel.
Clean all removed components, oil passages, and channels in each transfer case half with dry
cleaning solvent to remove all old lubricant and dirt.
Remove all metal filings from magnet.
Clean all mating surfaces.
Apply compressed air to each oil passage and channel to remove any obstructions or dry
cleaning solvent residue.
Inspect thrust washers, thrust bearings, and retainer rings for damage. Replace if damaged.
Inspect gear teeth and splines, and shaft splines for damage. Remove minor nicks or
scratches with light lubricating oil and a stone.
Inspect drive chain, and drive and driven sprockets for damage. Replace if damaged.
Inspect Iockplate and Iockplate hub for damage. Replace if damaged.
Inspect transfer case halves and bolt hole threads, and 2 transfer case alinement dowels for
damage. Replace if damaged.
Inspect transfer case adapter and oil seal grooves in adapter for damage. Replace if
Inspect pads on mode fork and range fork for damage. Replace if damaged.