Loader PT-422 hydro pump

[Skalini]

I blew my Hydrostatic pump last weekend. A shaft came out of the pump and oil all over. Called Power-Trac. $2500 for a new pump. I know they rebuild them for $1000 but I am wondering if these can be purchased somewhere else a bit cheaper?

 

[woodlandfarms]

Wow, I won't be of any help on this but for reference why do you think this happened? Age? Low oil or just luck of the draw?

Got pix?

Carl

 

[Skalini]

I found a remanufactured pump for $800. Installed it today and I'm back up and running better than ever. I talked to the guys at power-trac and they told me any SAE 10w30 or 5w30 oil for the hydro. I thought I read post on here that said Power-trac recommends Mobile 1 10w30. I asked them about that and they said NO. Only in the engine. Hard to know who to believe. I'm a Mobil 1 fan and really wanted to use it. Its not like its going to kick out when mixed with straight oil! Or am I wrong?

 

[BobRip]

I found a remanufactured pump for $800. Installed it today and I'm back up and running better than ever. I talked to the guys at power-trac and they told me any SAE 10w30 or 5w30 oil for the hydro. I thought I read post on here that said Power-trac recommends Mobile 1 10w30. I asked them about that and they said NO. Only in the engine. Hard to know who to believe. I'm a Mobil 1 fan and really wanted to use it. Its not like its going to kick out when mixed with straight oil! Or am I wrong?

I use Mobil 1 15w50 in the hydraulic system. I have only used to for 11 years and 950 hours, so use at your own risk. I do get much better torque when warm than the 5w30 that came in the machine.

 

[Skalini]

Thanks Bob, Do you use a special filter?

 

[woodlandfarms]

I can't remember, has anyone put Hydraulic fluid in the tank or is everyone running some form of engine oil still?

 

[KentT]

Thanks Bob, Do you use a special filter?

I'm also using synthetic - Amsoil in my case. I prefer the Wix or Napa Gold filters...

 

[BobRip]

Thanks Bob, Do you use a special filter?

Just a standard NAPA HYDRAULIC filter. Napa 1551. It's a cross for the one PT uses.

 

[KMA]

Oil seem to be one of most debated topics on the internet I think...

That being said, here's a link to an older thread talking about the use of synthetic oil for the hydraulics:

http://www.tractorbynet.com/forums/power-trac/116623-best-synthetic-hydraulic-fluid-money.html

BTW, I ended up going with Rotella T Synthetic 5w-40 due to price, and the fact that I had such good luck with it in other applications.

 

[MossRoad]

When I change my filter every 50 hours I fill the filter and top off the tank with Mobil1. I have about 450 hours, so that's about 9 oil changes, so I've added about 10 quarts of Mobil1 to my 10 year old PT425 over the years. Still seems to run just as strong as day 1. :thumbsup: