AIR CLEANER GP 1148147 - Caterpillar

TORQUE PROPORTIONING DIFFERENTIAL
CORRECT TOOTH CONTACT(5) Torque for the bolts that hold carrier to axle housing: 920 and 930 with lockwashers ... 98 7 lb.ft.(133 10 N m)930 with flat washers ... 110 10 lb.ft.(150 14 N m)(11) Torque for the bolts that hold bevel gear to case ... 98 5 lb.ft.(133 7 N m)(13) Torque for bolts with flat washers (930) ... 110 10 lb.ft.(150 14 N m)Adjustment Procedure:
1. Install pinion shaft (2) with bearings in housing (1).2. Tighten nut (7) on pinion shaft (2), until torque needed to turn pinion shaft (2) is ... 8 2 lb. in.(0.9 0.2 N m)3. Install lock and nut (10).4. Install case assembly (8) in carrier (4) with bevel gear (9) on side toward dowel hole in carrier (4).5. Install pinion shaft (2) and housing (1) into carrier (4). Use shims (3) to put pinion shaft (2) in alignment with bevel gear (9).6. Make adjustments to nut (6) and (14) until free movement (backlash) (12) between bevel gear (9) and pinion shaft (2) is: (920) ... .005 to .010 in.(0.13 to 0.25 mm)(930) ... .008 to .013 in.(0.20 to 0.33 mm)7. Tighten nut (6) and (14) the same amount until the torque needed to turn pinion shaft (2) is ... 30 to 50 lb. in.(3 to 6 N m) If the nuts are turned the same amount, the free movement (backlash) will not change.8. Check free movement (backlash) again. If an adjustment is necessary, turn nut (6) and (14) the same amount and in the same direction until the correct free movement (backlash) is given. If the nuts are turned the same amount and in the same direction, the bearing preload will not change. 9. Use the procedure that follows to check tooth contact: a. Put a small amount of prussian blue, red lead, or paint on the ring gear teeth.b. Turn the pinion shaft in both directions and check the marks made on the ring gear teeth.c. See the illustration for the marks of the correct tooth contact.
ILLUSTRATION A10. If the marks on the ring gear look like the marks in Illustration A, use the procedure that follows: a. Remove some of shims (3).b. After some of the shims are removed, do Steps 6, 7, and 8 again.c. Check tooth contact again.
ILLUSTRATION B11. If the marks on the ring gear look like the marks in Illustration B, use the procedure that follows: a. Install more of shims (3).b. After more of the shims are installed, do Steps 6, 7, and 8 again. Several adjustments may be necessary before the tooth contact is correct. Free movement (backlash) must be correct before tooth contact can be checked.