Massey 90 hydraulic Pump

molinegb · Jul 7, 2016

What is the replacement for the infamous 185700M91 pto/PS pump? I found rebuilt ones but leary on longevity. Good used are probably non existent.

Dieseltech · Jul 7, 2016

Good luck finding a good used one, that's the first part usually robbed. MF 85 used the same pump, but the drive gear is different as the teeth angle is changed. Pump is available new, but not cheap..

molinegb · Jul 7, 2016

Where new and how much?

hymie2lt · Jul 7, 2016

Hello
If you do a search for the new part number for the PS pump, you will find they are available on E-bay and elsewhere. be prepared to pay over $1000.00.
New part number is 193286m91.
Why did your pump fail? I have found that the most damaging thing with these pumps is the gear shift boots (rubber around the gear shifts) get weathered and cracked. Allowing rainwater to seep into the transmission, and damaging the pump. Also check that your intake screen on the pump, doesn't have holes, allowing dirt and debris into the pump.
Wayne

Massey 90 hydraulic Pump

molinegb

Well-known Member

Dieseltech

Well-known Member

molinegb

Well-known Member

hymie2lt

Member

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