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HT18 Hydro lift downpressure not very strong.


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#1 bread320i OFFLINE  

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Posted November 22, 2011 - 04:37 PM

I installed my snowplow yesterday, and the tractor lifts the plow up all the way, but down pressure is very weak. It will push down lightly, then give up. My other large frames will raise the front end off the ground. Only thing I done so far was check the fluid level and I did top it off. Ive looked at the service manual and I think I should look at the relief valve but Im not sure what Im looking for and what to do with it.

Any help is greatly appricated.
Adam

#2 JDBrian OFFLINE  

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Posted November 22, 2011 - 05:17 PM

I'm not a Bolens guy but I just thought that there could be an obstruction to the linkage that is limiting it's travel. Other than that, the relief valve or the overall health of the pump are 2 things that come to mind. Good luck getting it sorted out.
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#3 olcowhand ONLINE  

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Posted November 22, 2011 - 05:27 PM

More than likely it is weak going up too. Takes very little pressure to raise the blade compared to raising the tractor. I'd go ahead & check that relief valve per a manual that covers that. I'm not up to speed with Bolens, but on most other GT's, there is a pressure regulating valve, and then in the hydraulic valve or before it, there is also a bypass relief valve.
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#4 mikebramel OFFLINE  

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Posted November 22, 2011 - 06:04 PM

I have the gauges if you want to borrow them. If it is wear in the pump switch to thicker fluid
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#5 bread320i OFFLINE  

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Posted November 23, 2011 - 03:51 PM

Im going to pull the relief valve hopfully friday. The tractor has great power and the hydrostatic feels strong.

Mike I may call you about the guage if I find nothing in the relief valve




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