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M450 (Unique Issues) If you have a unique issue with your M450 model coach and it can't be answered in one of the other forums here, then this is where you can list it.....list your M450 Parts here too. NO DISCUSSION OF ANY OF THE M450 LAWSUITS ALLOWED HERE.

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Old 10-19-2020
GregOC GregOC is offline
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Join Date: Dec 2018
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Default 450 fan pump

Randy here is a pic of my fan pump label I would like to find a backup. Pulled it to check the splines and fix a stuck valve. hope to get a wet kit as grease has no way to escape at 30,000 miles the cavity was half full but not over serviced and full of hard grease like my 99lxi was at 90,000 miles
Eaton 421AK00106A 23C04UF1054
ADU062RO5AA10A431400001001__CD0A LARGE A


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Old 1 Week Ago
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WRVAlpine WRVAlpine is offline
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Greg, any response to this post via pm or email?
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Old 1 Week Ago
GregOC GregOC is offline
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nope, I had it pulled apart, turned out to be the proportional valve that adjust the oil flow out off the pump was muffed. new valve was around 300. not going to do a wet spline now but I will if all works well. sline looks great. want to keep it looking good.

this pump is a hydrostat like in a bobcat where the pump delivers variable flow. the valve near the fan motor actually controls the valve on the pump. not that hard to come out . to note.... the power steering pump sits on the C13Cat behind the fuel pump but they share the same reservoir. quite a mess of return lines and it is a cause of concern because any restriction to the inlet of the pump can mess up the wash plates. (We installed a larger outlet fitting from the tank for the heck of it) the Orange Kubota farm tractors get muffed when an operator blows a line on the loader and runs back only to run out of fluid. Like the Bus Fan and Steering two system share,,, the Kubota also share a common reservoir for the loader charge pump and the ground drive hydrostat.

We used California Hydrostat in Colton. perfect service just slow to get stuff out.
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