Usage:
D6H (3ZF, 4YF, 5HF, 6CF, 3YG, 4GG, 9KJ, 2DK, 6CK, 8SK, 9LK, 1YL, 2TL),
D6R (4FM, 8TM, 9BM, 3ZN, 5LN, 7KN, 9MN, 9PN, 4TR, 5PR, 5RR, 7DR, 7GR, 1RW),
D7H (5BF, 2RG, 3XG, 4FG),
D7R (2EN, 3DN, 5MR, 6ER),
D8N (9TC, 1XJ, 5TJ, 7TK),
D9R (7TL, 8BL),
D11R (8ZR, 9TR, 9XR) Track-Type Tractors;
215B (4FC),
219 (5CF),
219D (5XG),
5130 (7TJ, 5ZL),
5130B (4CS),
5230 (7LL) Excavators 623E (5SG),
623F (5SG) Scrapers;
988F (8YG, 2ZR) Wheel Loaders
Preload adjustment for the shaft bearings and barrel face has been changed for motor rotating groups in piston motors for fan drive, travel, elevator, and differential steering.
Shaft bearing adjustment is made before the barrel and pistons are assembled to the shaft.
The spring pack, changed from four to six, increases the barrel to port plate load.
The preload adjustment procedures are adaptable to the models, motor rotating groups, and piston motors listed in Chart A.
The preload adjustment for the shaft bearings (Procedure 1) is done first, followed by the preload adjustment of the barrel face (Procedure 2).
Procedure 1. Preload Adjustment For Shaft Bearings
1. Assemble bearing assembly (16), ring (15), bearing assembly (14), and bearing locknut (11) onto shaft (1).
NOTE: Bearings must have a light coating of oil, or have the lubricant coating that was applied by the manufacturer.
2. Tighten bearing locknut (11) to obtain 1.5 to 1.9 N·m (13 to 17 lb in) shaft running torque.
NOTE: For bearings that have been run-in, tighten to 50% of the specified torque.
3. Obtain Dimension B, 111.30 +0.00 -0.10 mm (4.382 +0.000 -0.004 in), assembling the following parts: Shims (13) (as required), shaft seal (8), O-ring seal (12), front cover (2), and retaining ring (3).
Procedure 2. Preload Adjustment For Barrel Face
NOTE: No spring pack or pistons are required to obtain Dimension A, 242.80 -0.05 -0.15 mm (9.559 -.002 -.006 in).
1. Assemble center pin (17), disc (4), and retaining plate (5). Secure with seven screws (6).
2. Assemble barrel (7) to bottom out on center pin (17) and install port plate (20).
3. Measure distance from front of retaining ring (3) to rear of port plate (20).
4. Subtract this measurement from Dimension A. This difference will determine the thickness of the spacer required to obtain Dimension A.
5. Remove port plate (20) and barrel (7).
6. Remove seven screws(6), retaining plate (5), disc (4), and center pin (17).
7. Assemble disc (4), center pin (17), and seven pistons (18) with rings (19).
8. Apply sealant to seven screws (6), install, and tighten each screw (6) to 15.5 ± 1.5 N·m (137 ± 13 lb in).
9. Place six 9T-2281 Springs (9) on spacer (10), selected from Chart A.
NOTE: Assemble springs as show in View C of illustration.
10. Insert assembled springs and spacer into barrel (7).
11. Position pistons (18) and center pin (17), assemble barrel (7), and install port plate (20).
Typical of 6E-4091, 9T-2010, 9T-4847, and 119-6115 Rotating Groups