D6D TRACTOR POWER TRAIN – Final Drive Gears, Idler Pinions And Bearings

Remove Final Drive Gears, Idler Pinions And Bearings

Start By:

a. remove final drive cases


NOTICE

Keep all parts clean from contaminants. Contaminants put into the system may cause rapid wear and shortened component life.


1. Remove the plug from the final drive case with tool (A).

2. Remove dowel (1) from the final drive case with a1/4″-20 NC bolt.

3. Remove the two bearings from the final drive case with tooling (B).

4. Install one of the final drive case bolts in the steering clutch case as shown. Put a wire around the gear and pinion and the bolt.

NOTE: The wire will hold the gear and pinion in position during removal of the gear and hub (2).

5. Fasten a hoist to the gear and hub (2). Weight of the gear and hub is 113 kg (250 lb). Remove the gear and hub from the sprocket shaft.

6. Put the gear and hub on wood blocks. Remove the bearing from the gear and hub with tooling (C).

7. Remove the eighteen bolts, locks and nuts from the gear and hub. Remove the gear from the hub.

NOTE: Note the orientation of the gear for installation purposes.

8. Remove bearing cup (3).

9. Remove the wire from the gear and pinion. Fasten a hoist to the gear and pinion. Weight of the gear and pinion is 34 kg (76 lb). Remove the gear and pinion (4) from the steering clutch case.

10. Put the gear and pinion on wood blocks. Remove bearing race (5) with tooling (D).

11. Turn the gear and pinion over. Remove bearing race (6) with tooling (E).

12. Remove the pinion shaft from the gear as follows:

a. Put the gear and pinion shaft in a press as shown.

b. Put a small amount of pressure on the pinion shaft with a press. Push the ring in the groove on the pinion shaft with a hammer and punch. The ring will stay in the groove because of the pressure on the pinion shaft.

c. When the ring is completely in the groove, the pinion shaft will slide out of the gear.


NOTICE

Too much pressure on the pinion shaft can cause damage to the gear.


13. Drain the oil from the bevel gear case and the steering clutch case.

14. Install three 1/2″ – 13 NC forcing screws in cage assembly (7). Tighten the screws evenly until the case assembly is loose.

15. Remove dowel (8) from the cage with a 1/4″-20 NC bolt.

16. Remove seal (9).

17. Remove the bearing from the cage with tooling (B).

18. Remove the outer bearing race from the pinion shaft with tooling (F).

Install Final Drive Gears, Idler Pinions And Bearings


NOTICE

Keep all parts clean from contaminants. Contaminants put into the system may cause rapid wear and shortened component life.


1. Heat the outer bearing race to a maximum temperature of 135° C (275°F). Install the outer race on the pinion shaft as shown.

2. Lower the temperature of bearing (10). Install the bearing in cage (11). Make sure the hole in the bearing is in alignment with the hole in the cage during installation of the bearing. Install the dowel that holds the bearing in position.

3. Install a new seal (12). Put clean oil on the seal.

4. Install the bearing and cage (7). Make sure the oil groove in the cage is down as shown.

5. If a separation of the gear and pinion was made, install the retainer in the pinion. Install the gear over the pinion.

6. Heat the outer bearing race (6) to a maximum temperature of 135°C (275°F). Install the outer bearing race on the gear and pinion as shown.

7. Turn the gear and pinion gear over. Heat the inner bearing race (5) to a maximum temperature of 135°C (275°F). Install the inner bearing race on the gear and pinion as shown.

8. Lower the temperature of bearing cup (13). Install the bearing cup in the steering clutch case even with the machined surface of the steering clutch case.

9. Put 1P808 General Purpose Lubricant on the bearing rollers. Fasten a hoist to the gear and pinion. Install the gear and pinion (14).

10. Put a wire around the gear and pinion and the bolt in the steering clutch case.

NOTE: The wire will hold the gear and pinion in position during installation of the gear and hub.

11. Put the gear on the hub. Install the eighteen bolts, nuts and locks.

NOTE: Notice the off-set of the gear. Make sure the deeper off-set is installed over the hub and toward the machine.

12. Heat the bearing for the gear and hub to a maximum temperature of 135°C (275°F). Install the bearing on the hub.

13. Fasten a hoist to the gear and hub. Position the gear and hub (2) on the sprocket shaft. Remove the wire from the gear and pinion. Remove the bolt from the steering clutch case.

14. Put the two bearings in position in the final drive case. Make sure the holes in the bearings are in alignment with the holes in the final drive case. Install the dowels that hold the bearings in position. Use a 1/4″-NC bolt to install the dowels. Install the plugs over the dowels.

15. Fill the steering clutch case and the bevel gear case with oil to the correct level. See Operation And Maintenance Manual.

End By:

a. install final drive cases


NOTICE

Perform Scheduled Oil Sampling on oil wetted compartments after performing service work to check for contaminants left in the system following repair. Contaminants put into the system may cause rapid wear and shortened component life.


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