Discussion:
Slow drive when cold

Hi, need help with a Hyundai 25L-9A, has slow drive in forward and reverse until it warms up, then it will drive ok.
Pump pressure is good, handbrake valve and direction valve replaced. Valve block stripped and cleaned, but still have slow drive until warm.
Any ideas???
  • Posted 22 Jan 2025 04:21
  • By Dan81
  • joined 6 Feb'13 - 47 messages
  • Kent, United Kingdom
Showing items 1 - 5 of 5 results.
Yes, replace both
  • Posted 9 Jan 2026 23:54
  • By Dan81
  • joined 6 Feb'13 - 47 messages
  • Kent, United Kingdom
Both directions movement clutch piston seals have caked, replace seals and machine will drive as designed.
  • Posted 9 Jan 2026 23:27
  • By Abayomi_Michael
  • joined 15 Jul'20 - 3 messages
  • Nigeria
Abayomi
Both forward and reverse clutch piston seals?
  • Posted 9 Jan 2026 23:22
  • By Chris_
  • joined 9 Jan'26 - 2 messages
  • United States
Hi, yes the problem was the clutch pack piston seals had gone hard and brittle. The clutch packs themselves were OK, just needed to replace the 2 seals, inner and out seals on the pistons.
Had 3 trucks all doing the same, must be a common problem.
  • Posted 9 Jan 2026 21:48
  • By Dan81
  • joined 6 Feb'13 - 47 messages
  • Kent, United Kingdom
Did you find a solution for this issue? I'm having the same problem.
  • Posted 9 Jan 2026 02:27
  • By Chris_
  • joined 9 Jan'26 - 2 messages
  • 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.

Mitsubishi FGE35AT
Yokohama, Japan
Used - Sale
Maxlion R2D35
Hangzhou, China
New - Sale

PREMIUM business

Lift Technologies Inc.
Global leader - manufactures masts, carriages, sideshifters & fork positioners
Latest job alerts …
Bensenville, United States
Louisville, KY, United States
St. Louis, MO, United States
Movers & Shakers
Johan Leveque Johan Leveque
Vice-chair, ALICE - (Alliance for Logistics Innovation through Collaboration in Europe)
Co-CEO, LIS Logistische Informationssysteme (LIS)
Regional sales manager, Battery Builders
SVP business solutions for the Americas, Dematic
Editorial calendar - planned features
CONSTRUCTION FORKLIFTS
HANDLING GOODS IN THE COLD
LOADING/UNLOADING FREIGHT
BROWNFIELD AUTOMATION
FORKLIFT ATTACHMENTS
BATTERY AFFORDABILITY AND LIFETIME
FORKLIFT SAFETY
Mitsubishi FGE35AT
Yokohama, Japan
Used - Sale
Maxlion R2D35
Hangzhou, China
New - Sale
Editorial calendar - planned features
CONSTRUCTION FORKLIFTS
HANDLING GOODS IN THE COLD
LOADING/UNLOADING FREIGHT
BROWNFIELD AUTOMATION
FORKLIFT ATTACHMENTS
BATTERY AFFORDABILITY AND LIFETIME
FORKLIFT SAFETY