VALVE GP-RELIEF 7J3975 - Caterpillar

The driveshafts are under drive line windup pressure. You must release drive line windup pressure in all driveshafts before preforming any work on any driveshafts. To prevent possible injury or death, release the drive line windup pressure by raising all the wheels on one side of machine and then placing the wheels back on the ground. This will allow the drive line windup pressure to release.
1. Move the ejector forward. 2. Remove the bolts and the nuts that hold guard (3) to the block, and remove the guard.3. Remove the bolts, the nuts and block (1) from the frame.4. Remove bolts (2) from each end of drive shaft (4).5. Use two persons to remove drive shaft (4) from the machine. The weight of drive shaft (4) is 25 kg (55 lb). The following steps are for installation of the drive shaft. Check the condition of the universal joints, if universal joints are damaged or worn replace with new parts. 6. Use two persons, and put drive shaft (4) in position in the machine.7. Install bolts (2) in each end of drive shaft (4). Tighten bolts (2) to a torque of 156 7 N m (116 5 lb ft).8. Put block (1) in position, and install the bolts and the nuts that hold block (1).9. Position guard (3), and install the bolts and the nuts that hold guard (3) to the block.10. Move the ejector to the rear.