Thanks, Jim
On Tue, Jun 11, 2019 at 5:31 PM Jim Miller via Gmclist <
> > On Jun 11, 2019, at 2:31 PM, 1275gtsport--- via Gmclist <
>
> > Putting the beast back together and I recall when taking apart there was
> a brittle plastic like material between the end cap and outer rings of the
> housing part 12 and 13 on page 39 of the owners manual. However there is
> nothing showing in the manual for it. What do I use? Where do I get it and
> what is it called
>
> HI Adam, there is nothing between 12 and 13. The item you are thinking
> about is item 22 that is located between 12 (the field assembly) and the
> housing bolted to the back of the engine which is item 1. It is there to
> serve as an air seal; you can use a piece of cork sheet, or rubber, or
> anything else you can come up with to go in that gap that will not be able
> to be sucked into the machine. It serves to prevent air leakage into the
> generator through the gap. Keep in mind that unlike most air cooled small
> engines, the Onan’s air cooling is based on a suction arrangement with the
> intake at the back of the generator, through the field and the armature and
> then across the engine cylinders and heads and then out the flywheel
> discharge. Since this is suction it is imperative that there be no leaks
> otherwise cooling can be compromised.
>
> Make sure also that you have item 21 on page 26 around the oil filter;
> this is a very important seal. JimK has them, he is my source.
>
> As for the air seals between the field and the engine I just take some
> cork sheet and cut some 1/4” wide pieces and use adhesive to stick them to
> the housing on the back of the engine. Once I bolt on the field assembly it
> crushes the cork a bit and keeps it captive for perpetuity. Hope that helps!
>
> —Jim
> Jim Miller
> 1977 Eleganza
> 1977 Royale
> Hamilton, OH
>
>
>
>
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--
Jim Kanomata
Applied/GMC, Newark,CA
jimk
http://www.appliedgmc.com
1-800-752-7502
