This site is not affiliated with AGCO Inc., Duluth GA., Allis-Chalmers Co., Milwaukee, WI., or any surviving or related corporate entity. All trademarks remain the property of their respective owners. All information presented herein should be considered the result of an un-moderated public forum with no responsibility for its accuracy or usability assumed by the users and sponsors of this site or any corporate entity.
The Forum Parts and Services Unofficial Allis Store Tractor Shows Serial Numbers History
Forum Home Forum Home > Allis Chalmers > Farm Equipment
  New Posts New Posts
  FAQ FAQ  Forum Search   Events   Register Register  Login Login


G valve adjustment and associated frustrations

 Post Reply Post Reply
Author
Message
AnnArborAllis View Drop Down
Bronze Level
Bronze Level


Joined: 18 Jun 2014
Location: United States
Points: 9
Post Options Post Options   Thanks (0) Thanks(0)   Quote AnnArborAllis Quote  Post ReplyReply Direct Link To This Post Topic: G valve adjustment and associated frustrations
    Posted: 10 Mar 2017 at 1:41pm
I'm 47, so hardly an "old guy", but was feeling a little old this week. I'm bringing my grandfather's G back up to snuff and decided to adjust the valves while I had the carb off. I'm glad I did as there was a stuck valve. I now have a new valve kit installed, adjusted, and the engine back together. Now my frustration.... you would not believe how hard it has been to find a valve spring compression tool and tappet wrenches. Of all the places I checked, Sears had the valve spring tool. I had to get tappet wrenches at Grainger. Over a week to find everything! I realized how few people know how to adjust non-hydraulic valves these days (or actually do it). While working on it, I called my 9 year old over to explain how the engine worked and what I was doing and he was interested. So, I guess the message is to make sure we all pass on the knowledge and that there is incredible value in a good tool set.
Back to Top
Sponsored Links


Back to Top
dt1050 View Drop Down
Orange Level
Orange Level


Joined: 05 Jul 2011
Location: central pa
Points: 1078
Post Options Post Options   Thanks (0) Thanks(0)   Quote dt1050 Quote  Post ReplyReply Direct Link To This Post Posted: 10 Mar 2017 at 2:12pm
had an 8n with a bad valve, wasn't sure if maybe it burned a valve or not so, I went into an auto parts store to get grinding compound, spring compressor, etc.  just in case. they looked at me like I had 3 heads.AngryAngry  borrowed a compressor from a friend.  found out it was just a stuck valve, by then I was so ticked off I forgot about compressing the valve spring, pulled the retaining clip and the valve shot out of the block and bounced off the metal roof on the garage....LOL glad I wasn't looking right over the valve.
Just cause it's orange don't make it a tractor, there's only one..Allis Chalmers
Back to Top
Stan IL&TN View Drop Down
Orange Level
Orange Level
Avatar

Joined: 13 Sep 2009
Location: Elvis Land
Points: 6730
Post Options Post Options   Thanks (0) Thanks(0)   Quote Stan IL&TN Quote  Post ReplyReply Direct Link To This Post Posted: 11 Mar 2017 at 10:19am
I got most of my hands on smarts with ATV and motorcycle engines so the jump to tractors was the same just more of them to adjust. There are still quite a few modern street bikes that require adjustment out there including mine and remember that any project is an opportunity to acquire more tools.
1957 WD45 dad's first AC

1968 one-seventy

1956 F40 Ferguson
Back to Top
CrestonM View Drop Down
Orange Level
Orange Level
Avatar

Joined: 08 Sep 2014
Location: Oklahoma
Points: 8454
Post Options Post Options   Thanks (0) Thanks(0)   Quote CrestonM Quote  Post ReplyReply Direct Link To This Post Posted: 11 Mar 2017 at 12:02pm
Originally posted by dt1050 dt1050 wrote:

had an 8n with a bad valve, wasn't sure if maybe it burned a valve or not so, I went into an auto parts store to get grinding compound, spring compressor, etc.  just in case. they looked at me like I had 3 heads.AngryAngry  borrowed a compressor from a friend.  found out it was just a stuck valve, by then I was so ticked off I forgot about compressing the valve spring, pulled the retaining clip and the valve shot out of the block and bounced off the metal roof on the garage....LOL glad I wasn't looking right over the valve.
Lol!! 
Those valves are pretty unique, in the way they come out as a complete unit. Never seen another engine with them that way. 
You must've pulled pretty hard on that valve keeper to get past all the pressure of that spring! A buddy made a tool for me that I put in the exhaust and intake ports to depress on the guide to release the pressure to get the keeper out.  
Back to Top
Bob-Maine View Drop Down
Orange Level
Orange Level
Avatar

Joined: 11 Sep 2009
Location: Central Maine
Points: 922
Post Options Post Options   Thanks (0) Thanks(0)   Quote Bob-Maine Quote  Post ReplyReply Direct Link To This Post Posted: 11 Mar 2017 at 12:26pm
AnnArbor, I restored my G a few years ago. Took to block to a machinist to hot tank it and install new valves. Got it back less than clean so I finished the cleaning myself. Thought I'd check the valve clearances and found that they had not been adjusted. Not having tappet wrenches, I ground some Chinese wrenches thin and used them. I really hate to pay someone to do something they didn't do. Will never use him again. Bob@allisdowneast
   
I used to think I was indecisive, but now I'm not sure.
Back to Top
Dusty MI View Drop Down
Orange Level
Orange Level
Avatar

Joined: 13 Sep 2009
Location: Charlotte, Mi
Points: 5058
Post Options Post Options   Thanks (0) Thanks(0)   Quote Dusty MI Quote  Post ReplyReply Direct Link To This Post Posted: 11 Mar 2017 at 5:40pm
Talking about the G and valves, I'll a some what related question.
A few short years ago I took the engine to my G in had had the valves ground. The compression varied.
Now the compression is good but I have a knock when not under load. Should I worry?

Thanks 
Dusty
917 H, '48 G, '65 D-10 series III "Allis Express"
Back to Top
dt1050 View Drop Down
Orange Level
Orange Level


Joined: 05 Jul 2011
Location: central pa
Points: 1078
Post Options Post Options   Thanks (0) Thanks(0)   Quote dt1050 Quote  Post ReplyReply Direct Link To This Post Posted: 12 Mar 2017 at 6:31am
by the time I ran all over to the place getting parts I was rather Angry at that I tend to apply a bit more force to things.  I found that a pair of fencing plyers work great for pulling the retaining clip. of course that's when ya don't have the spring compressor in there....lol
Just cause it's orange don't make it a tractor, there's only one..Allis Chalmers
Back to Top
 Post Reply Post Reply
  Share Topic   

Forum Jump Forum Permissions View Drop Down

Forum Software by Web Wiz Forums® version 11.10
Copyright ©2001-2017 Web Wiz Ltd.

This page was generated in 0.396 seconds.


Help Support the
Unofficial Allis Forum