Correct Piston..Finally!

Tools, fabrication, measuring, storing...
User avatar
propane1 Canada
Posts: 2488
Joined: Thu Dec 23, 2021 11:32 am
Location: PEI, Canada
Has thanked: 5928 times
Been thanked: 9005 times

Re: Correct Piston..Finally!

Post by propane1 »

A long and winding road,,,,, hehe. I started humming a Beatles song. Can’t remember the name of the song. Abby Road album I think ?


Ya, I know, ramblin again.


Noel
User avatar
DavidBarkey Canada
Posts: 3205
Joined: Sat Mar 06, 2021 10:35 am
Location: Waverley On.
Has thanked: 17608 times
Been thanked: 10923 times

Re: Correct Piston..Finally!

Post by DavidBarkey »

Eugen wrote: Wed Feb 23, 2022 4:37 pm I like a good puzzle! I'm sure you'll find out what's wrong :D

Look between my ears . My :whip: says I puzzle her all the time . :O :rofl:

Dave
Dave
Mad Tractor Builder
Vivala446 United States of America
Posts: 67
Joined: Mon Jan 24, 2022 11:09 am
Location: Kentucky
Has thanked: 6 times
Been thanked: 164 times

Re: Correct Piston..Finally!

Post by Vivala446 »

I haven't checked the points yet, but from I have seen so far it looks like the cover doesn't come off as I've seen it in videos. It appears that just the back side or panel comes off. Seems like that wouldn't give you much room to work between the engine and the firewall in front of the battery and tank.
User avatar
Harry United States of America
Posts: 1570
Joined: Sun Mar 07, 2021 8:33 am
Location: Lockport,NY
Has thanked: 9727 times
Been thanked: 6635 times

Re: Correct Piston..Finally!

Post by Harry »

https://manuals.ccigt.com/ServiceManual ... marked.pdf
Vivala, check page 18 in the above manual. Some Onan's have a cover in the rear between the battery and the engine. Some have a cover on the top. The rear facing cover comes off with two bolts and the top comes off with a bolt on the top. The top cover type is easier to adjust the points. The rear cover type is a bit harder because of space limitations. It would probably be easier to remove the battery to get the rear cover off.

Keep the Peace
Harry
1973 444, 1974 644, 1976 446, 1977 646, 1986 226
User avatar
propane1 Canada
Posts: 2488
Joined: Thu Dec 23, 2021 11:32 am
Location: PEI, Canada
Has thanked: 5928 times
Been thanked: 9005 times

Re: Correct Piston..Finally!

Post by propane1 »

Not much room there for sure. But I did it on mine. Not so bad once you get the cover off and get a look at it. My cover has a screw in it. Make sure the wire inside is not touching the cover. Won’t start if it is. I had that trouble. Took me a while to find that. I put a piece of thin card board, like a business card, inside the top of the cover to stop that.

Noel
Attachments
image.jpg
image.jpg
Vivala446 United States of America
Posts: 67
Joined: Mon Jan 24, 2022 11:09 am
Location: Kentucky
Has thanked: 6 times
Been thanked: 164 times

Re: Correct Piston..Finally!

Post by Vivala446 »

I could swear it looks like mine opens differently but I'll have to double check. It's always looked like mine that same cover on it but only the back side came off
User avatar
Spike188 Canada
Posts: 1105
Joined: Sat Mar 06, 2021 12:58 pm
Location: Ayr Ontario
Has thanked: 6143 times
Been thanked: 4307 times

Re: Correct Piston..Finally!

Post by Spike188 »

This is the point box on 646-75
image.png
CCKA engine

Spike
Spike Colt - 9 & 10, Case - 108, 118, 444, 446, 448, 646, 646bh, Ingersoll 4016, 4118AH
User avatar
propane1 Canada
Posts: 2488
Joined: Thu Dec 23, 2021 11:32 am
Location: PEI, Canada
Has thanked: 5928 times
Been thanked: 9005 times

Re: Correct Piston..Finally!

Post by propane1 »

Well there ya go. I learned some thing today about the points cover. Never knew that they came off the back too.

Noel
User avatar
DavidBarkey Canada
Posts: 3205
Joined: Sat Mar 06, 2021 10:35 am
Location: Waverley On.
Has thanked: 17608 times
Been thanked: 10923 times

Re: Correct Piston..Finally!

Post by DavidBarkey »

@Vivala446 I would recommend that if yours has the back cover you change the condenser while in there . You did have an issue with the ignition switch . If you have really fine sand paper polish the points , I like 400- 600 grit . If there is oil in the point box, clean with brake/parts cleaner and blow dry .

Dave
Dave
Mad Tractor Builder
Vivala446 United States of America
Posts: 67
Joined: Mon Jan 24, 2022 11:09 am
Location: Kentucky
Has thanked: 6 times
Been thanked: 164 times

Re: Correct Piston..Finally!

Post by Vivala446 »

I'm afraid the only way to get good access will be to remove the battery, battery tray, hydraulic tank (again) and the plate that the tank sits on
Post Reply