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What engine?

Welder Dave

Senior Member
Joined
Oct 11, 2014
Messages
12,531
Location
Canada
Ritchie specs. are not always accurate and shouldn't be relied upon. Below is just one example. 11K3919 became a 977L in 1971 not 1978. If that's the engine plate should be original engine.

"Production of 70J, 48J, and 11K ended in 1978; they were replaced by new 977L units."
 

Cat977

Senior Member
Joined
Feb 19, 2006
Messages
505
Location
Madison WI
Occupation
Machinist/Millwright
I deleted the line (Production of 70J, 48J, and 11K ended in 1978; they were replaced by new 977L units) from the list. Thanks for the correction.
 

Catdidrun

Member
Joined
Mar 21, 2020
Messages
14
Location
Beech Creek, Pennsylvania
Offroad Equipment has excellent prices and availability. I got a new loaded head today and the rebuild kit is on it's way.
Should I be concerned that there would be metal grindings in the oil pump, crank, fuel pump, turbo or anything else? Should the pump screen and oil filter have kept the particles out of these parts?
 

rmllarue91

Senior Member
Joined
Apr 16, 2014
Messages
701
Location
northeast pa
Occupation
field technician
Wash engine first. The most important steps check crank for spun bearings and sizes and measure liner protrusion. Next most important get a good case of brake cleaner. Order / get Plasti gauge for measuring bearing clearance. Step three watch you tube on measuring and engine inspection. Might be a good time to build a sturdy work bench and hang a new light or two if you find yourself in a dark shop / barn.... Oh and keep HEF updated on progress
 

Mobiltech

Senior Member
Joined
Jan 14, 2014
Messages
1,697
Location
Sask.
Occupation
Self employed Heavy duty mechanic
I think you got ahead of yourself a bit. The proper thing to do would be tear it down , assess the damage and then order parts. You don’t know if your engine even has standard bearings so that will mean you got the wrong kit if the cranks been cut.
There’s a good chance the crank is bent , there may be block damage or your block may have other problems in the liner seal area.
From what you’ve told us so far I hope you follow the advice given closely because there is a lot more to a simple rebuild than just putting parts in.
 

Nige

Senior Member
Joined
Jun 22, 2011
Messages
29,349
Location
G..G..G..Granville.........!! Fetch your cloth.
Should I be concerned that there would be metal grindings in the oil pump, crank, fuel pump, turbo or anything else? Should the pump screen and oil filter have kept the particles out of these parts?
Should you be concerned.? Absolutely, there will be debris EVERYWHERE and you need to get every last little bit of it out. IMO the first item on your shopping list should’ve been a couple of cases of brake cleaner rather than boxes full of new parts.

The screen on the oil pump suction side is designed to trap “tree branches, dogs, and small children”, so don’t depend on it. Unless there is a GOOD reason why not, the oil pump should be replaced. It’s more than likely trashed anyway - but it protects everything else, so that’s why it should really be replaced.

As Mobiltech said above, the best plan would be to tear everything apart first, and assess the damage. Have block, crank, & camshaft checked, then move on to timing gears, crank damper, etc, etc. My concern at this point is that you are getting ahead of yourself.
 

Catdidrun

Member
Joined
Mar 21, 2020
Messages
14
Location
Beech Creek, Pennsylvania
Thanks for the advice, I'll get it tore down and get professional help with the inspection. I appreciate all of your help, and i will post the progress. Thanks so much.
 
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