PLUG 6E1601 - Caterpillar

(6) Torque for 12 bolts that hold carrier to axle housing ... 195 18 lb. ft.(265 25 N m)(8) Torque for twelve bolts that hold case assemblies together ... 100 15 lb. ft.(136 20 N m)(13) Torque for 12 bolts ... 98 9 lb. ft.(133 12 N m) Adjustment Procedure:1. Install pinion shaft (4) with bearings in housing (3).2. Tighten nut (2) on pinion shaft (4), until torque needed to turn pinion shaft (4) is ... 8 2 lb. in.(0.9 0.2 N m)3. Install lock and nut (1).4. Install case (9) in carrier (11) with bevel gear (10) toward the flat made in the flange of carrier (11).5. Install pinion shaft (4) and housing (3) into carrier (11). Use shims (5) to put pinion shaft (4) in alignment with bevel gear (10).6. Make adjustments to nut (12) and nut (7) until free movement (backlash) between bevel gear (10) and pinion shaft (4) is ... .007 to .014 in.(0.18 to 0.36 mm)7. Tighten nut (12) and nut (7) the same amount until the torque needed to turn pinion shaft (4) is ... 30 to 50 lb. in.(3 to 6 N m)
CORRECT TOOTH CONTACTIf the nuts are turned the same amount, the free movement (backlash) will not change.8. Check free movement (backlash). If an adjustment is necessary, turn nut (12) and nut (7) 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 bevel gear teeth.b. Turn the pinion shaft in both directions and check the marks made on the bevel gear teeth.c. See the illustration for the marks of the correct tooth contact.
ILLUSTRATION A10. If the marks on the bevel gear look like the marks in Illustration A, use the procedure that follows: a. Remove some of shims (5).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 bevel gear look like the marks in Illustration B, use the procedure that follows: a. Install more of shims (5).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.