Part No. for generator gasket

How to keep the Cessna 170 flying and airworthy.

Moderators: GAHorn, Karl Towle, Bruce Fenstermacher

Post Reply
N2356D
Posts: 14
Joined: Mon Apr 22, 2002 5:54 pm

Part No. for generator gasket

Post by N2356D »

Anybody have a part no. and/or a source for the gasket between the engine and the generator, not an alternator. I have a Delco model 1101890, 20 amp generator. I need a new gasket in order to reinstall. Any suggestions?

Bernie Steadman
N2356D
User avatar
170C
Posts: 3182
Joined: Tue May 06, 2003 11:59 am

Re: Part No. for generator gasket

Post by 170C »

Bernie, I am sure some of our members will come through with a part number for you. However, if you have access to some gasket material its a pretty simple/easy job to make your own gasket.
OLE POKEY
170C
Director:
2012-2018
User avatar
GAHorn
Posts: 21295
Joined: Fri Apr 12, 2002 8:45 pm

Re: Part No. for generator gasket

Post by GAHorn »

N2356D wrote:Anybody have a part no. and/or a source for the gasket between the engine and the generator, not an alternator. I have a Delco model 1101890, 20 amp generator. I need a new gasket in order to reinstall. Any suggestions?

Bernie Steadman
N2356D
PN 652072.....aircraft spruce 877 477 7823
Warning...change the tach drive oil seal at the same time.pn 642714
'53 B-model N146YS SN:25713
50th Anniversary of Flight Model. Winner-Best Original 170B, 100th Anniversary of Flight Convention.
An originality nut (mostly) for the right reasons. ;)
N2356D
Posts: 14
Joined: Mon Apr 22, 2002 5:54 pm

Re: Part No. for generator gasket

Post by N2356D »

Thanks George,

I got the gasket and oil seal and everything installed OK. I had my generator rebuilt by Modified Aircraft Accessories in Brooks, KY. Very reasonable and returned with yellow tag. Now if I can find the time to fly it would be great. Trying to find some AGS type fuses. Aircraft Spruce lists AGC fuses which are 1/32 smaller in diameter than the AGS. Any thoughts.

Bernie
User avatar
GAHorn
Posts: 21295
Joined: Fri Apr 12, 2002 8:45 pm

Re: Part No. for generator gasket

Post by GAHorn »

AGS fuses are available from Hill Aircraft, http:www.cessnaparts.com/
(How 'bout that?... genuine Cessna parts from a Cessna distributor! and at a reasonable price, too!) :wink:
'53 B-model N146YS SN:25713
50th Anniversary of Flight Model. Winner-Best Original 170B, 100th Anniversary of Flight Convention.
An originality nut (mostly) for the right reasons. ;)
User avatar
LBPilot82
Posts: 181
Joined: Sun Sep 14, 2008 11:56 pm

Re: Part No. for generator gasket

Post by LBPilot82 »

Soooo, is the consensus to use a bit of permatex #2 on this gasket? I replaced mine and put it in dry as recommended by my mechanic so as to not make the next replacement too difficult. After less than an hour flight time she's leaking pretty good right at the bottom of the gasket. I scraped the accessory case with a razor blade which would certainly be a pain with any type of hard gasket sealer.

Thanks in advance
Richard Dach
49' A Model N9007A
SN 18762
User avatar
edbooth
Posts: 498
Joined: Wed Nov 24, 2004 3:03 am

Re: Part No. for generator gasket

Post by edbooth »

LBPilot82 wrote:Soooo, is the consensus to use a bit of permatex #2 on this gasket? I replaced mine and put it in dry as recommended by my mechanic so as to not make the next replacement too difficult. After less than an hour flight time she's leaking pretty good right at the bottom of the gasket. I scraped the accessory case with a razor blade which would certainly be a pain with any type of hard gasket sealer.

Thanks in advance
Are you sure it is the gasket leaking and not the generator oil seal leaking and running down there ?
Ed Booth, 170-B and RV-7 Driver
bagarre
Posts: 2615
Joined: Thu Sep 30, 2010 11:35 pm

Re: Part No. for generator gasket

Post by bagarre »

edbooth wrote:
LBPilot82 wrote:Soooo, is the consensus to use a bit of permatex #2 on this gasket? I replaced mine and put it in dry as recommended by my mechanic so as to not make the next replacement too difficult. After less than an hour flight time she's leaking pretty good right at the bottom of the gasket. I scraped the accessory case with a razor blade which would certainly be a pain with any type of hard gasket sealer.

Thanks in advance
Are you sure it is the gasket leaking and not the generator oil seal leaking and running down there ?
^^ That was/is my problem. For the longest time, I thought it was the gasket but it ended up being the generator shaft seal.
User avatar
GAHorn
Posts: 21295
Joined: Fri Apr 12, 2002 8:45 pm

Re: Part No. for generator gasket

Post by GAHorn »

Not only the oil seal...but also replace the O-ring at the shaft/woodruff-key.
'53 B-model N146YS SN:25713
50th Anniversary of Flight Model. Winner-Best Original 170B, 100th Anniversary of Flight Convention.
An originality nut (mostly) for the right reasons. ;)
User avatar
canav8
Posts: 1006
Joined: Thu Sep 25, 2008 2:34 pm

Re: Part No. for generator gasket

Post by canav8 »

Richard has a Jasco Alternator on his 170A. His gasket was leaking. He took it off and found the problem.
52' C-170B N2713D Ser #25255
Doug
User avatar
LBPilot82
Posts: 181
Joined: Sun Sep 14, 2008 11:56 pm

Re: Part No. for generator gasket

Post by LBPilot82 »

canav8 wrote:Richard has a Jasco Alternator on his 170A. His gasket was leaking. He took it off and found the problem.
Yep, new alternator installed just a few weeks ago so I'm certain the shaft seal is good. Upon removal of the new unit, I found I didn't quite scrape all the gasket material off around the bottom stud. New gasket should arrive tomorrow. Live and learn!
Richard Dach
49' A Model N9007A
SN 18762
Post Reply
Cessna® is a registered trademark of Textron Aviation, Inc. The International Cessna® 170 Association is an independent owners/operators association dedicated to C170 aircraft and early O-300-powered C172s. We are not affiliated with Cessna® or Textron Aviation, Inc. in any way.