NOZZLE GP-UNIT INJECTOR 3960916 - Caterpillar

6. Remove the remaining bolts (8) that hold the pinion assembly to the differential center housing. Slide the pinion out on the guide bolts far enough to install Tool (A). Fasten a hoist to the pinion assembly as shown.7. Remove the pinion assembly from the differential center housing. The weight of the pinion assembly is approximately 66 kg (145 lb). Remove the shims and O-ring seal from the pinion housing. 8. Fasten Tool (A) and a hoist to the differential as shown. Carefully lift the differential out of the differential center housing. The weight of the differential is approximately 109 kg (240 lb). 9. Turn the remainder of the axle housing group over, and fasten it to the transmission repair stand. Fasten Tool (B) and a hoist to the rim flange on axle shaft assembly (9) as shown. Remove twenty six bolts (10) and the washers that hold the axle shaft assembly to the differential center housing. Remove the axle shaft assembly. The weight of the axle shaft assembly is approximately 295 kg (650 lb).10. Remove the brake group from the differential center housing. See "Remove & Install Brake Groups" in this module.11. Repeat Steps 2 through 4 to remove and disassemble the other intermediate housing assembly (1) that is on the differential center housing. 12. Remove bearing cone (11) from the differential with tool (C). 13. Turn the differential over, and remove bearing cone (12) with Tool (D).14. Use a press to remove the four large spring pins and four small spring pins (13) from the differential.15. Remove twenty bolts (14) that hold bevel gear (15) in position. Using a press, remove bevel gear (15) from the differential. The following procedure is for the installation of the differential and pinion assembly. Also, the following procedure controls bearing preload and gives the same results for new or used bearings. 16. Heat bevel gear (15) to a temperature of 135°C (275°) for a maximum of four hours. Install the bevel gear on the differential.17. Install four large pins (13) partially into bevel gear (15). Install four small pins (13) into the large pins. Press the pins into bevel gear (15) until they are even with the outside surface of the bevel gear. Install twenty bolts (14) that hold the bevel gear to the differential. Tighten bolts (14) to a torque of 95 10 N m (70 7 lb ft). Tighten each bolt an additional 180 5°. Check to be sure the bevel gear is seated on the differential group shoulder.18. Press bearing cone (11) and bearing cone (12) on the differential case. Check for full seating of the bearing cones. Cup freezing or cone heating may be used if cups or cones are reset with a driver or press after the parts have reached a uniform temperature. Limit cone heating to 135°C (275°F) maximum for a maximum of 4 hours. Lubricate the bearings after they have cooled to prevent rusting. 19. Install bearing cup (7), sleeve