acmoc

ACMOC Membership Benefits

  • FREE quarterly magazine filled with content about antique Caterpillar machines
  • FREE classified listings
  • ACMOC store discounts and specials
  • Full Bulletin Board Access
    • Marketplace (For Sale/Wanted)
    • Technical Library
    • Post attachments

$44 /year ELECTRONIC

$60 /year USA

$77 /year International

Head gasket is starting to weep

More
2 years 8 months ago #236832 by Fat Dan
Well Poop fire and save on matches. The head gasket is starting to weep om the generator side after the Motor Grater 8T14777 came up to operating temp. I planed on retorque the head and set the valves but the rockers are in the way and cannot find my crows foot 15/16" . I really don't want to pull the rockers if it is not going to help to retorque the head. Think retorquing will help?
First chance I get I'll spring for a new head gasket set... ooffta how am I going to explain that to the wife?
"I love you babe, you are the best wife a man could ever have." That's about as far as I'll get before she knows something is up. Wish me luck gang.

ACMOC Member
Traxcavator: 60, 955E 12A08263; 57, 955C 12A04040; 57, 955C 12A03563.
1954 No.12 Diesel Motor Grader 8T14777.
1945 No.12 Diesel Motor Grader 9K9320; 9K9982
1944-46 Adams Model No. 311 Motor Grader
1943 IH T9 Tractor w/ Bullgrader Blade

Please Log in or Create an account to join the conversation.

More
2 years 8 months ago #236834 by Fat Dan
Well I’m out at the 8T and retorquing won't work. The valve lash is all over the place.
The four valves I’ve tested are from 0.135 to 0.24 lash is supposed to be 0.10 hot for intake and exhaust.
Thanks everyone. I’ll keep ya posted if I don’t fall off the dang thing

ACMOC Member
Traxcavator: 60, 955E 12A08263; 57, 955C 12A04040; 57, 955C 12A03563.
1954 No.12 Diesel Motor Grader 8T14777.
1945 No.12 Diesel Motor Grader 9K9320; 9K9982
1944-46 Adams Model No. 311 Motor Grader
1943 IH T9 Tractor w/ Bullgrader Blade
The following user(s) said Thank You: kracked1

Please Log in or Create an account to join the conversation.

More
2 years 8 months ago - 2 years 8 months ago #236835 by Rome K/G
Yea, all the 311's, 15'S and 18"s are noted for being seepers, best thing is when installing a new head gasket is use Permatex 300 on them.
Last edit: 2 years 8 months ago by Rome K/G.
The following user(s) said Thank You: Fat Dan

Please Log in or Create an account to join the conversation.

More
2 years 8 months ago #236840 by Fat Dan
Adjusting the valve lash went well. I thought the engine sounded good before now is sounds like a diesel 🤦Ha Ha.
I'll run it some tomorrow and check valve lash again.
Why dose everyone crank the valve covers down to 50 ft.pounds?
"Torque, what's torque?" Asked the 6'8" 450lbs WWF character holding out a bent and twisted wrench
Thanks Rome K/G
and everyone else for looking👍😁👍

ACMOC Member
Traxcavator: 60, 955E 12A08263; 57, 955C 12A04040; 57, 955C 12A03563.
1954 No.12 Diesel Motor Grader 8T14777.
1945 No.12 Diesel Motor Grader 9K9320; 9K9982
1944-46 Adams Model No. 311 Motor Grader
1943 IH T9 Tractor w/ Bullgrader Blade

Please Log in or Create an account to join the conversation.

More
2 years 8 months ago #236848 by Rome K/G
You're welcome, yea I have had to bend them back out on some covers. Same goes for injection pump lifter setting, had a 315 engine spittin n sputterin, after resetting lifters she ran smooth as velvet.
The following user(s) said Thank You: Fat Dan

Please Log in or Create an account to join the conversation.

More
2 years 7 months ago #236859 by D4Jim
FD,
How did your valve lash get so far off?? A few years back I had some water from the exhaust stack get into a cylinder so checked the valve lifter clearance after about 600 hours they were all within .002 on the old 112 I have. Figured I could have been that far off when I reset them 5 years ago prior.

ACMOC Member 27 years
D47U 1950 #10164
Cat 112 1949 #3U1457
Cat 40 Scraper #1W-5494
The following user(s) said Thank You: Fat Dan

Please Log in or Create an account to join the conversation.

More
2 years 7 months ago - 2 years 7 months ago #236863 by Fat Dan
I'm not sure how the valve lash got that far off that was the first time I had ever had the valve covers off. I was going to pop the valve covers and check them again today but after operating for thirty minutes Arthur Itus wouldn't let me.

ACMOC Member
Traxcavator: 60, 955E 12A08263; 57, 955C 12A04040; 57, 955C 12A03563.
1954 No.12 Diesel Motor Grader 8T14777.
1945 No.12 Diesel Motor Grader 9K9320; 9K9982
1944-46 Adams Model No. 311 Motor Grader
1943 IH T9 Tractor w/ Bullgrader Blade
Last edit: 2 years 7 months ago by Fat Dan. Reason: Clarity

Please Log in or Create an account to join the conversation.

More
2 years 7 months ago #236864 by trainzkid88
i have used hylomar gasket dressing with success on head gaskets. i have also used VHT products coppercote aerosol gasket dressing with success too. spray on let it tack up and assemble as normal. this was with new gaskets of course. there is a art in setting tappets so you set it and it doesnt move the screw as you tighten the lock nut.

had to change a rocker on our old ford tractor it doesn't have lock nuts you insert the adjuster screw and before installing on the rocker shaft you get a centre punch and and dimple the rocker on the side of the adjuster boss this squeezes it slightly and stops the adjuster undoing when the retired ford mechanic told me that i had to ask him your sure about that. he confirmed he was taught that as a apprentice he did his time on old fords.
The following user(s) said Thank You: Fat Dan

Please Log in or Create an account to join the conversation.

Time to create page: 0.168 seconds
Go to top