Report this forum post

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

This is ONLY to be used to report flooding, spam, advertising and problematic (harassing, abusive or crude) posts.

Indicates mandatory field
Editorial calendar - planned features
CONSTRUCTION FORKLIFTS
HANDLING GOODS IN THE COLD
LOADING/UNLOADING FREIGHT
BROWNFIELD AUTOMATION
FORKLIFT ATTACHMENTS
BATTERY AFFORDABILITY AND LIFETIME
FORKLIFT SAFETY
Global Industry News
edition #1257 - 20 November 2025
In this week’s Forkliftaction News , Toyota Industries Corporation confirms it has settled a class-action lawsuit in the US which centred around its 2023 emissions cheating scandal. Find out how much the class-action cost it... Continue reading
Movers & Shakers
Steven Ballerini Steven Ballerini
Chief executive officer, Australian Supply Chain & Logistics Association (ASCLA)
Engineering policy lead, Logistics UK
Regional manager - Eastern Canada, Associated Equipment Distributors
Vice president - IT & EP OEM parts, Big Joe Forklifts

PREMIUM business

Combilift Ltd
Manufactures world class 4-way Handling Solutions
Editorial calendar - planned features
CONSTRUCTION FORKLIFTS
HANDLING GOODS IN THE COLD
LOADING/UNLOADING FREIGHT
BROWNFIELD AUTOMATION
FORKLIFT ATTACHMENTS
BATTERY AFFORDABILITY AND LIFETIME
FORKLIFT SAFETY