Discussion:
Forks drifting down

This is a 45RRTT high bay reach truck. Forks are drifting approx 5" in 5 mins. Its not leaking externally anywhere, which rules out the cylinders. Cylinders are displacement type cluster cylinders. I removed holding valve threaded into valve block and inspected visually. Seems OK. Removed return line at tank with forks raised and still no fluid. The forks are still drifting and I don;t know where the fluid i going? Any guesses??
  • Posted 5 Dec 2008 11:08
  • By Davie
  • joined 5 Dec'08 - 26 messages
  • Ontario, Canada
Showing items 1 - 3 of 3 results.
I eventually found the problem and you are exactly right. Flow control valve $700.00 piece of aluminum.,. Hehe
thanks anyways..
  • Posted 2 Jan 2009 08:31
  • By Davie
  • joined 5 Dec'08 - 26 messages
  • Ontario, Canada
Check the flow control valve. Raise the forks. Go to the hyd tank, take off ( carefully ) the little plastic hose that goes to the top of the tank at the return and see if there is a small flow of oil. If so the flow control valve is junk ( internally by-passing).
  • Posted 28 Dec 2008 11:21
  • By roadtek
  • joined 4 Dec'07 - 123 messages
  • Massachusetts, United States
Its not going anywhere, the packing is bypassing
  • Posted 12 Dec 2008 23:04
  • By marty_b
  • joined 12 Dec'08 - 4 messages
  • Ohio, 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.

Movers & Shakers
Lee Rushton Lee Rushton
Business development manager - UK, IRE, BENELUX, Tyri Lights
President and CEO, Wajax Corporation
Chairman of the board, Tompkins Solutions
Director of government affairs, Associated Equipment Distributors
Global Industry News
edition #1253 - 23 October 2025
In this week’s Forkliftaction News we look at the October Confidence Index for the US Equipment Finance Industry - a measure of the health of the materials handling and logistics sectors - which has remained steady month-on-month... Continue reading
UN Forklift FBR25NQC3
HANGZHOU, Zhejiang, China
New - Sale
Toplift Ferrari TFC36-48
Stoney Creek, Ontario, Canada
Used - Sale
USD1
Upcoming industry events …
October 29-31, 2025 - Marina Bay Sands, Singapore
December 03, 2025 - New Delhi, India
UN Forklift FBR25NQC3
HANGZHOU, Zhejiang, China
New - Sale
Toplift Ferrari TFC36-48
Stoney Creek, Ontario, Canada
Used - Sale
USD1
Latest job alerts …
Spencer/Sheldon/Sioux Rapids, IA, United States
Editorial calendar - planned features
CONSTRUCTION FORKLIFTS
HANDLING GOODS IN THE COLD
LOADING/UNLOADING FREIGHT
BROWNFIELD AUTOMATION
FORKLIFT ATTACHMENTS
BATTERY AFFORDABILITY AND LIFETIME
FORKLIFT SAFETY