Usage:
825G (6RN) Soil Compactors;
826G (7LN) Landfill Compactors
Reference: Service Manual Module, SENR1330-01, Disassembly and Assembly, 824G Wheel Tractor, 825G Soil Compactor and 826G Landfill Compactor, Power Train. This module is found in Service Manual, SENR1325, 824G Wheel Tractor, 825G Soil Compactor, 826G Landfill Compactor, Volume I.
Description of Change: New high strength bolts with pre-applied thread lock have higher tensile strength. This increases the clamp force and retention for rear axles in high load applications.
Adaptable To: This rear axle improvement was made primarily for 826G (7LN) Landfill Compactors working in industrial landfills. However, this improvement was also added to the rear axles of 825G (6RN) Soil Compactors. The rear axle change is effective with 825G (6RN351-Up) Soil Compactors and 826G (7LN451-Up) Landfill Compactors. The new rear axle high strength bolts are adaptable to first production for the machines listed by following the rework procedure.
Rework Procedure
1. Connect the steering frame lock. Refer to Disassembly and Assembly, "Steering Frame Lock - Separate and Connect" for the machine that is being serviced.
2. Remove the rear drive shaft. Refer to Disassembly and Assembly, "Drive Shaft (Rear) - Remove and Install" for the machine that is being serviced.
3. Remove the rear oscillating axle. Refer to Disassembly and Assembly, "Oscillating Axle (Rear) - Remove and Install" for the machine that is being serviced.
4. Place axle housing assembly on wood blocks.
160-8509 Installation Procedure
1. Remove the front trunnion support from the axle housing. Refer to Disassembly and Assembly, "Trunnion Support (Oscillating Axle, Front) - Remove and Install" for the machine that is being serviced.
2. Inspect the front support bearing sleeve and seals. Replace if damaged.
Illustration 1.
3. Secure two 138-7573 Link Brackets (1) to pinion housing (2). Attach a hoist and suitable lifting slings to the link brackets.
4. Remove sixteen 6V-5686 Bolts (3) and washers.
Illustration 2.
5. Use two bolts (3) to force pinion housing (2) from the carrier assembly.
Illustration 3.
6. Use a hoist to remove pinion housing (2) from the carrier assembly.
Illustration 4.
7. Remove shim pack (4) and save for reuse.
8. Remove any dirt and oil from the bevel gear group carrier assembly internal threads. Inspect the threads for damage. Repair if needed.
Illustration 5.
9. Remove O-ring seal (5) from the opposite end of the pinion housing. Replace this seal with a new 8F-5900 O-ring Seal.
Illustration 6.
10. Install original shim pack (4) between the carrier and the pinion housing.
Illustration 7.
11. Use a hoist and suitable lifting slings to carefully install pinion housing (2) on the carrier, as shown.
12. Install sixteen new 160-8509 Bolts with new 5P-8547 Washers. Do not lubricate the bolts threads or the internal threads of the carrier assembly. Tighten the 160-8509 Bolts to a torque of 105 ± 20 N·m (75 ± 15 lb ft). After all of the bolts have been tightened, check each bolt torque again in order to ensure no bolt has loosened. After checking each bolt for the correct torque, turn each bolt an additional 120 degrees ± 10 degrees.
NOTE: The new 160-8509 Bolts are high strength, do not substitute. The new bolts have a pre-applied thread lock patch. If the thread lock patch was removed during shipping and handling, add a small amount of 154-9731 Thread Lock (10 ml bottle) or 155-0695 Thread Lock (50 ml bottle) to the bolt threads before assembly.
160-8510 Bolt Installation Procedure
Illustration 8.
1. Remove ten bolts (1), the washers and cover (2) from the rear trunnion support (3). The weight of the cover is 22 Kg (49 lb).
Illustration 9.
2. Remove thrust bearing (4) from rear trunnion support (3).
Illustration 10.
3. Remove ten 6V-3532 Bolts (5) and plate (6) from the rear trunnion support. The weight of the plate is 15 Kg (33 lb).
Illustration 11.
4. Remove any dirt and oil from the trunnion internal threads. Inspect the threads for damage. Inspect the rear support bearing sleeve and seal. Repair if needed.
Illustration 12.
5. Install plate (6) with ten new 160-8510 Bolts (5) and ten 5P-8248 Washers. Do not lubricate the bolt threads or trunnion internal threads. Tighten the bolts to a torque of 210 ± 40 N·m (155 ± 30 lb ft) plus an additional 120 degrees ± 10 degrees.
NOTE: The new 160-8510 Bolts are high strength, do not substitute. The new bolts have a pre-applied thread lock patch. If the thread lock patch was removed during shipping and handling, add a small amount of 154-9731 Thread Lock (10 ml bottle) or 155-0695 Thread Lock (50 ml bottle) to the bolt threads before assembly.
Illustration 13.
6. Apply 5P-0960 Molybdenum Grease to thrust bearing (4). Install thrust bearing (4) in rear trunnion support (3).
Illustration 14.
7. Apply 6V-5765 Sealant to the mating surfaces of rear trunnion support (3) and cover (2). Install Cover (2), ten bolts (1) and the washers. The weight of the cover is 22 Kg (49 lb). Tighten the bolts to a torque of 530 ± 70 N·m (390 ± 50 lb ft).
8. Install the oscillating axle. Refer to Disassembly and Assembly, "Oscillating Axle (Rear) - Remove and Install" for the machine that is being serviced.