Discussion:
Slow hydraulics

I have a couple of trucks where the sideshifts are moving veeeerrrrrryyyy slow. Aux system is only running about 975 - 1000 psi (should be almost 1800). The lift/aux pump is less than a year old and the solenoid valve isn't the cause either. Anyone have ANY ideas? We're fresh out.
  • Posted 14 Jun 2009 02:10
  • By jeff_i
  • joined 2 Nov'08 - 15 messages
  • Iowa, United States
Showing items 1 - 3 of 3 results.
yep...
cylinder bypass would be my first w.a.g....
I would also be considering changing hydraulic oil and filters... as a preventive maintenance.
freezer operation?
  • Posted 20 Jun 2009 22:26
  • Modified 20 Jun 2009 22:28 by poster
  • By edward_t
  • joined 5 Mar'08 - 2,334 messages
  • South Carolina, United States
"it's not rocket surgery"
new pump fixed that particular problem. we have another one, same model, that shifts one direction ok under load but not the other. cylinder bypassing?
  • Posted 20 Jun 2009 21:11
  • By jeff_i
  • joined 2 Nov'08 - 15 messages
  • Iowa, United States
try lifting and sideshift at same time,if it sideshifts,reach or tilts faster, that means the pump isnt running fast enough,the aux side of pump is bad
  • Posted 17 Jun 2009 13:22
  • By 537man
  • joined 17 Jun'09 - 1 message
  • North Carolina, United States

Post your Reply

Forkliftaction accepts no responsibility for forum content and requires forum participants to adhere to our rules of conduct. Click here for more information.

If you are having trouble using the Discussion Forums, please contact us for help.

Crown RR5225-30TT321
Braeside, Melbourne, Victoria, Australia
Hire
Ncn 85TH
Ncn 85TH 2017
Balling, Denmark
Used - Sale
Upcoming industry events …
October 29-31, 2025 - Marina Bay Sands, Singapore
November 26-27, 2025 - Budapest, Hungary
April 8-10, 2026 - Jiangsu Province, China
Hyster-Yale reports Q2 operating loss Cleveland, OH, United States

PREMIUM business

Zhejiang UN Forklift Co., Ltd
Manufacturer of IC forklifts, electric forklifts and warehouse equipment.
Fact of the week
The black box flight recorder was invented by Australian scientist David Warren in the mid-1950s. While initially met with indifference in Australia, his invention gained international recognition, particularly in the UK, and is now a mandatory piece of safety equipment on all commercial aircraft.