From: Yuke.RF@forces.gc.ca
Date: Mon Apr 11 2005 - 09:00:10 PDT
The collar had enough clearance inside for a rubber cover to prevent damage
to the piston. The collar worked by being long enough to fill the length of
the exposed piston when it is extended between the body of the ram and where
the piston attached to the beam of the hoist. The collar was a fixed length
so they were set up for an average comfortable working height (the tall guys
stooped a bit and the short guys had to get a box to stand on).
-----Original Message-----
From: Ryan Gill [mailto:rmgill@mindspring.com]
Sent: Monday, 11, April, 2005 09:44 AM
To: Military Vehicles Mailing List
Subject: Re: [MV] Overhead car/truck safety stands
At 11:30 AM -0400 4/11/05, Yuke.RF@forces.gc.ca wrote:
>We have used a safety collar on our Aircraft engine hoists when we had to
>work on the engines out of their storage stands. The hoist is just an
>expensive underrated garage engine lift. The collar was a section of pipe
>with sufficient diameter to fit over the piston part of the hydraulic ram
>split length wise. The two pieces were attached on one side by a piano
hinge
>and the other side by a locking pin. To use we would lift the engine so
>there was more piston showing than the collar was long, put the collar on
>the exposed piston then lowered the crane down so the collar supported the
>weight of the engine so if there was a failure the engine would not bump
>down.
How would it grip without damaging the piston?
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