SETSCREW-ADJUSTMENT 6E4401 - Caterpillar

7. Install tooling (D) with two 7/16"-14NC forcing screws, nuts, and washers. Make sure the wood blocks make contact with the barrel face. Tighten the nuts evenly to release the pressure against and spiral snap ring (4). Remove the spiral snap ring.
Do not remove the second snap ring. The snap ring holds a large spring in the center of the barrel which is under compression. Sudden release of the spring can cause personal injury or motor damage.
8. Loosen nuts (5) evenly and remove tooling (D). 9. Remove the two screws that hold the cam in position from the rear of the motor. Install guide rods (F).10. Put block (E) in position behind the motor. Make sure the motor shaft is in the hole in block (E). Tilt the motor and put it in a vertical position on the block. 11. Remove the body. Remove the two guide rods from cam (6). 12. Install tooling (G) and remove the bearing cup from the body. Remove the snap ring and lip-type seal from the body. 13. Remove shaft (7) from the cam and barrel. 14. Install tooling (H) and remove the bearing cone from the shaft. 15. Put identification on each piston (8). Put a mark on barrel (9) respective to each piston location for use during assembly of pistons and barrel. Remove the cam and pistons from the barrel. 16. Remove the eight bolts and locks that hold the retainer and shims to the cam. Remove retainer (10) and shims (11).
Be extra careful not to cause damage to the highly finished surfaces of the pistons.
17. Remove retraction plate (12) and the pistons from the cam. 18. Remove cam wear plate (13) from the cam. 19. Put barrel (9) in position in a press. Put the plastic protective plate from tooling (C) on the barrel face for protection of the face from scratches. Put plate (1) between the press head and spring spacer (16). 20. Push down on spring (15) to release the pressure against snap ring (17).21. Remove snap ring (17). Slowly release compression of spring (15).22. Remove spacer (16), spring (15), and spacer (14) from the barrel.Assemble Motors
1. Thoroughly clean all the parts. Put a small amount of hydraulic oil on the parts. 2. Install spacer (1), spring (2), and spacer (3) in barrel (5). 3. Put the barrel in position in a press. Put the plastic protective plate from tooling (A) on the barrel face. Put plate (A) between the press head and spacer (3). Push down on spring (2) and install snap ring (4). 4. Install cam wear plate (6) in cam (7). 5. Put pistons (9) in position on the cam wear plate in their correct order. Install retraction plate (8). 6. Put the shims and retainer (10) in position on the cam. Install the bolts and locks. Tighten the bolts to a torque of 75 10 lb.in. (8.5 1.1 N m).7. Measure the clearance between the piston slippers and cam wear plate