Hi Bill,
Not uncommon. The bushes are supposed to have a groove running
fore-aft around the pin into which the zerk is supposed to distribute
grease. For reasons unknown, the fibre bearings supplied today they do
not have this groove (which can be provided with a Dremel Moto-tool for
those so inclined). It should be on the order of 1/8" wide and half
the thickness of the bushing, but precision and perfection are not
mandatory for proper function.
I believe Alon made these of metal (bronze?), but I don't believe these
to still be available.
If you have help, a sawhorse and a blanket you can get under the wing
and lift it with your back sufficiently for someone else to slide the
sawhorse under the wing adjacent to the main landing gear leg and hold
it such that the gear leg has no weight on it (it need not be fully
extended...you can work with the weight of the trailing arm, tire and
wheel). I can't remember if I constructed a "sawhorse shim" to get the
proper height or not.
You can also remove the top fasteners from the fairing strip (see
Ercoupe Parts Catalog, Fig. 24, p. 38, item 3) and work a loop of
strong rope or light chain under the top main spar bolt attaching the
outer wing panel to the center section with which to lift and support
the aircraft as necessary from that point with a hoist. A rope "deer
hoist" such as is sold at sporting goods stores is more than adequate
for such purpose.
I have a complete Ercoupe (less tail feathers and wing outer panels)
stored between the trusses in my hangar that was lifted and is
supported at those points; this, after seeing Ercoupe No. 1 thus
suspended (complete WITH tail feathers and wing outer panels) at the
Smithsonian's Paul E. Garber facility in Suitland, MD.
Regards,
William R. Bayne
.____|-(o)-|____.
(Copyright 2010)
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On Mar 17, 2010, at 14:53, will_snow_302 wrote:
One of my Knee Joint Pins on my Model G is not taking grease.
In order to service the bushing;
The manual suggests hoisting by the rear engine attach points with a
heavy pad at the rear of the tail cone. (not under the rear fairing}
Is there a better way to support the airplane while working on the
Landing Gear {Knee Joint}. I see no jack points or support points,
other than the Knee Joint I need to work on.
Thanks Bill
