EZ-GO ST 4X4 transmission bearings

[gemmechanic]

I will be disassembling our ST 4X4 transfer case as soon as the weather improves. Does anyone have list of the bearing and seal sizes needed? Since bearing failures are common, has anyone considered using sealed bearings in the transfer case to improve lubrication and keep out debris? These are also known as "clean" bearings. I have seen some confusion about what lubricant to use? Some say tractor fluid while some say gear oil?

Daniel

[garydee]

Originally Posted by gemmechanic

I have seen some confusion about what lubricant to use? Some say tractor fluid while some say gear oil?

Daniel

Mobilfluid 424 - search "Owners manual and Service Guide" - page 27. Whats is "Mobilfluid 424"? A quick search yeilds:

Recommended by ExxonMobil for use in

* Heavy-duty transmissions, differentials, final drives, hydraulic systems, power steering systems, wet brakes, PTOs and hydrostatic drives
* Off-highway industries including: agriculture, construction, and quarrying
Top-up and refill of systems
* Commercial transmission applications requiring Type A (Suffix A), Dexron and Type F fluids. Do not use in passenger car automatic transmissions
* Applications requiring API GL-4 or SAE 80W grade lubricants in all gear applications except hypoid gear designs
* Outstanding replacement for engine oils recommended for hydraulic and transmission systems



From the ST4x4 Manual:
Fuel Tank 6.7 gal (25.4 liters) unleaded, 87 octane or higher
Engine Oil
1.59 quarts (1.5 liters) crankcase only
1.90 quarts (1.8 liters) crankcase and filter
10W30 usually. See OIL on page 17.
Front Differential 15.2 ± 1 oz. (450 ml) of 80 - 90W GL5
Rear Axle 15.2 ± 1 oz. (450 ml) of 80 - 90W GL5
Transfer Case 24 oz. (700 ml) MOBILFLUID 424