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TM 5-2420-222-34
8-7.
DIFFERENTIAL ASSEMBLY MAINTENANCE (Con’t).
c.
CLEANING AND INSPECTION
1.
Clean and inspect bearings (see TM 9-214).
WARNING
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 solvent's flash point is 1000F-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 and get medical aid.
2.
Clean all other metal parts with dry cleaning solvent. Dry thoroughly with clean, dry rags.
NOTE
Differential ring gear and differential drive shaft are a matched set. If differential
ring gear is defective, differential drive shaft must also be replaced (see paragraph
8-6).
3.
Inspect all gears and shafts for cracks, breaks, and damaged teeth or splines. Replace if defective.
4.
Inspect parking brake drum for cracks, breaks, grooves, and scoring. Replace if defective.
5.
Check for any loose, missing, or damaged rivets. Replace as required.
6.
Inspect all other metal parts for cracks, breaks, abnormal bends, and damaged threads.
d.
REPAIR
Restore any damaged housing (12 or 18) threads using screw threading set.
e.
ASSEMBLY
NOTE
Perform steps 1 and 2 only if differential ring gear or rivets were removed.
1.
Install differential ring gear (17) in housing (18).
2.
Using blind riveter, install new rivet (19) in housing (18) and differential ring gear (17). Repeat for each rivet to be
installed.
3.
Install bevel gear (13), two shouldered shafts (15), and four bevel gears (14) on housing (12).
4.
Install bevel gear (16) on housing (18).
5.
Install housing (18) with assembled bevel gear (16) on housing (12). Install eight bolts (11) in two housings.
Torque bolts to 35 lb.-ft. (47 N•m).
6.
Using arbor press, install bearing cone (20) on housing (18).
7.
Install parking brake drum (10) on housing (12).
8.
Using arbor press, install bearing cone (9) on housing (12) and parking brake drum (10).
8-37
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