My 450 c builds up pressure in the final drives. You can run it a bit and take the fill plug out and there is built up pressure.
Should there not be a vent tube that is stopped up and I just can't find it?
Thanks
Alton
another question on 450
?The plug that takes a 3/4 square drive to remove above the tracks? The fill and drain plugs for the final drives are under the crawler. The plug above the track is the steering clutch housing. Im not aware of a vent. The steering housing can be seperate from the transmission or they can have a common sump. I do not know the break in SN when this happened. Some have been converted internally to common sumps (this is outlined in the service manual). If your crawler's steering clutch housing is the older or unconverted style, you could have a hydraulic hose leak or seal leak in the steering housing. This fluid moving from the transmission housing to the steering housing could explain a build up in air pressure and eventually an over-full case of oil. Normally, I believe there is 3 Gal in each steering clutch housing(the older one without the common sump). This would require very close monitoring of fluid levels during use, to see if there is a shift.
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