Buhler 485, 535, 435 manual F4-48

4-35 Section 4 - Lubrication & Maintenance

Every 500 Hours

Operation 45

Change the Differential Oil

Before changing the differential oil, operate the tractor a sufficient amount of time to warm up the oil in the differentials.. Loosen the check plug (1) and remove the drain plug (2) allowing the oil to drain completely from the differential housings..

Replace the drain plug (2) and tighten it to 74 N·m (55 ft-lbs).. Make sure the sealing surface on the plug is in good condition..

Refill the differentials through the check plug (1) to the proper level as indicated by the sight gauge (3)..

Buhler Versatile recommends that 85W140 GL5 oil be used in temperatures above 0°C (32°F) or 80W90 GL5 in temperatures below 0°C (32°F)..

NOTE: Oil will flow from the differential to the planetary hubs. Change the oil with the tractor on a level surface and allow the differential and planetary hub oil to level out.

Operation 46

Change the Planetary Hub Oil

To drain the planetary hub oil, rotate the tire so that the drain plug (4) is at the 6 o’clock position.. Loosen the fill plug (5) to allow all of the oil to drain from the planetary hub.. Make sure that the plug (4) is retightened, and then refill the hub as detailed in operation 23..

Torque Value: 61-75 N·m (45-55 ft-lbs)

Wrench size: 1¼" (1..250")

Buhler Versatile recommends that 85W140 GL5 oil be used in temperatures above 0°C (32°F) or 80W90 GL5 in temperatures below 0°C (32°F)..

NOTE: Oil will flow from the differential to the planetary hubs. Change the oil with the tractor on a level surface and allow the differential and planetary hub oil to level out.

Operation 47

Check the Axle Mount Bolt Torque

Check the axle mount bolts for proper torque..

Torque the nuts (6) and (7) to 1335 N·m (1000 ft-lbs).. There are four sets of nuts on each end of both axles.. Wrench size: 1¼" (1..250")..

1	3
	2	F4-44

5	4
	F4-43

62

7

F4-48

435/485/535