Hyster H80XL:
Hydraulic Nightmare

Hello Our XL80 blew a hose and lost all hydraulic fluid. Replaced hose and refilled fluid. The steering assist works but no forks up down or tilt or side shift. Then we replaced the pump. Now steering still has plenty of pressure but the forks won't move at all unless the engine rpm is quite high and then they move very slowly. This is a two stage pump. Does both the steering and forks. Tried adjusting the flow priority valve with no results. Anybody else have a problem like this? S/N F005D6406N Thanks very much......Dave
  • Posted 24 Apr 2017 07:07
  • Discussion started by Louie
  • Florida, United States
Showing items 1 - 4 of 4 results.
Hi guy and thanks for the reply. Found the problem today. I oversee the mechanic and don't do the actual work unless I have to. Turns out the mechanic never had tried to adjust the flow priority valve. I guess because the new pump had the valve locktited in place. I removed the valve and broke loose the locktite. Replaced and adjusted the valve until the forks move fine. Then test drove the lift to be sure the steering was OK. Thanks very much for your replies and take care......Dave
  • Posted 26 Apr 2017 08:51
  • Reply by Louie
  • Florida, United States
Sounds like the hydraulic pump is either faulty or incorrect for the lift. Where did you purchase the pump & how did you spec it out to get the replacement pump?
  • Posted 25 Apr 2017 23:47
  • Reply by bbforks
  • Pennsylvania, United States
bbforks (at) Hotmail (dot) com
Customers love technology- until they have to pay to fix it!
Hi and thanks for the reply. We put a new one and no change in the forks going up so slow. I was on it today. It will pickup a load fine but you really have to rev up the engine.
  • Posted 25 Apr 2017 10:31
  • Reply by Louie
  • Florida, United States
How about the pressure relief valve in the lift and tilt control valve.
  • Posted 24 Apr 2017 22:58
  • Reply by mrfixit
  • New York, United States

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