Discussion:
Lift cylinder seals

Hi all, I have just replaced the seals on the two lift rams (might have heard this model referred to as pencil rams ?)
Anyway, they (or one of them so far) are leaking already. I lifted something near max capacity and they were ok but later, under light load or just unloaded I heard a noise and there was a leak.
The rods are in good condition.
I bought the seals from a hydraulic place not from Manitou by measuring the old seals (which obviously were leaking) and now I am wondering if the rams are an oddball size and the old ones were leaking for the same reason, i.e. wrongly sized, as they weren't really damaged ?
The rod is definitely 50mm. The seal external diameter, both what I removed and what I installed, is 60mm but is it possible/likely that this should be 61 or 62 ?
Thanks for any advice.
  • Posted 24 May 2025 17:56
  • Modified 25 May 2025 22:40 by poster
  • By John_Hubbard
  • joined 24 May'25 - 1 message
  • Poitou Charentes, France

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.

Fact of the week
In 1923, French tennis player René Lacoste was promised a crocodile leather suitcase by his captain if he won his next match. He lost the match but won the nickname "the crocodile" which he had sown onto his tennis attire. Ten years later he launched the first polo shirt and Lacoste, the first brand to feature a logo on its clothing.
Latest job alerts …
Atlanta Savannah Orlando Tampa Jacksonville West Palm, United States
Sioux Falls, SD, United States
Erie, PA, United States
Hoist Liftruck F180-36BOX-CAR
Coraopolis, Pennsylvania, United States
Used - Sale & Hire
TCM FD115-3
Yokohama, Japan
Used - Sale
Upcoming industry events …
October 15-16, 2025 - Las Vegas, United States
November 12-13, 2025 - London, United Kingdom
November 13-14, 2025 - Berlin, Germany
Fact of the week
In 1923, French tennis player René Lacoste was promised a crocodile leather suitcase by his captain if he won his next match. He lost the match but won the nickname "the crocodile" which he had sown onto his tennis attire. Ten years later he launched the first polo shirt and Lacoste, the first brand to feature a logo on its clothing.
Movers & Shakers
David Wells David Wells
Chief executive, Logistics UK
National business development manager, Roadpod
Senior vice president, PEAC Solutions
Board director, UKMHA