Discussion:
Transmission Disabled

Hyster H80FT R5V1976K Originally truck would not move, codes 524223-1 524225-1 low clutch pressure, found enable valve, replaced enable valve now transmission works fine when cold, when warm truck disables with same codes, replaced proportional valves and pressure switches, no change. Pump pressure 150 PSI, 30 PSI low rpm. problem only present at low idle, if rpm is raised slightly transmission works fine with no error codes. Pump was replaced by dealer before i started working on truck
  • Posted 23 May 2016 08:01
  • By terry_c
  • joined 26 Feb'12 - 21 messages
  • Oregon, 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.

Global Industry News
edition #1258 - 27 November 2025
In this week’s Forkliftaction News , we report on Hyster-Yale laying off staff in the US amid what it describes as “challenging market conditions”... Continue reading

Showcased in the Virtual Expo

Fact of the week
According to studies published in the English Journal of Medicine, the impact of daylight savings is revealed by a 24% increase in heart attacks on the Monday following the spring shift forward. When clocks move back in autumn, heart attacks drop by about 21%, suggesting that loss of sleep is an important driver.
UN Forklift FD30T-NJM1
HANGZHOU, Zhejiang, China
New - Sale
Factory Cat MICROMAG20D
Morgantown, Pennsylvania, United States
Used - Sale
Upcoming industry events …
December 4–7, 2025 - Goyang, Korea, Republic Of
March 10-12, 2026 - Hong Kong, Hong Kong
June 30-July 2, 2026 - Birmingham, United Kingdom
Latest job alerts …