CRANKSHAFT GP 7W3926 - Caterpillar

TRANSMISSION HYDRAULIC CONTROL GROUP
60-Speed selector valve. 66-Directional selector valve spool. 92-Safety reset valve spool. 93-Detent. 94-Cam.3. Adjust valve spool (60) as necessary so first land of spool at adjustment end is even with front face of the selector valve body when the detent (93) is positioned in notch "P" (THIRD speed notch) of cam (94).Switch Adjustment
8S647 SLAVE AND SYNCHRONIZING SWITCH GROUP
95-Switch drive gear. 96-Sector gear. 97-Timing marks.Timing marks (97) on gears (95) and (96) must be in alignment when transmission hydraulic controls are in NEUTRAL "N" position and switch group is properly installed.Transmission Electrical Wiring Testing
Transmission electrical control wiring tests can be performed using the 1P3550 Wiring Tester Group.Prepare the machine for testing by proceeding as follows: Turn on the disconnect switch, connect a jumper wire across the oil pressure switch terminal on the tractor (this is necessary for testing when the diesel engine is not running) and position the neutral-run switch in the RUN position.Proceed with the testing, both static and dynamic, using the following schematics and charts as guidelines.
TRANSMISSION ELECTRICAL WIRING SYSTEM - SCHEMATIC (Tractor and Scraper Controls in FIRST FORWARD Position)
TRANSMISSION ELECTRICAL WIRING SYSTEM - SCHEMATIC (Tractor and Scraper Controls in FIRST FORWARD Position) Tractor Differential And Final Drive
Differential
DIFFERENTIAL AND BEVEL GEAR GROUP
1-Bevel pinion. 2-Adjusting ring. 3-Bearing cone. 4-Stop. 5-Bearing cup. 6-Retainer. 7-Bevel gear. 8-Shims. 9-Bearing cup. 10-Bearing cone. 11-Adjusting ring. A-Dimension (stop to bearing cap clearance) .002 .001 in. (0,05 0,025 mm). B-Dimension [not to increase more than .005 .002 in. (0,13 0,05 mm)] with properly preloaded bearings.1. Use shims (8) as necessary behind retainer (6) at time of assembly to preload pinion bearings so torque required to rotate pinion is 20 5 lb. in. (23,06 5,77 cm.kg). Do not install seal in retainer (6) until after adjustment is complete.2. Assemble the differential assembly with axle centerline in vertical position and bearing cone (10) and cup (9) at bottom, positioned with adjusting ring (11) to provide approximate required backlash between bevel gear (7) and bevel pinion (1).3. Adjust bearing cone (3) and cup (5) to maximum preload possible without increasing dimension (B) between bearing cap and differential assembly more than .005 .002 in. (0,13 0,05 mm).4. Turn adjusting rings (2) and (11) the same amount without changing bearing preload to provide a backlash between bevel gear (7) and bevel pinion (1) of .014 .002 in. (0,36 0,05 mm).5. Adjust stop (4) as necessary to provide clearance (A) between stop (4) and right bearing cap.Wheel Bearing Adjustment
FINAL DRIVE AND WHEEL GROUP
1-Spindle housing. 2-Wheel. 3-Spindle adapter housing. 4-Retainer. 5-Bolts (ten). 6-Shims.1. Install wheel (2) complete with bearings on spindle adapter housing (3) without shims (6) behind retainer (4).2. Tighten five equally spaced bolts (5) evenly to a torque of 100 10 lb. ft. (13,8 1,4 mkg) while slowly rotating wheel to seat bearings.3. Install two 1/2"-13 forcing screws with locknuts into holes provided in retainer and tighten finger tight with end of forcing screws bottomed against end of spindle adapter housing (3). Tighten locknuts securely to