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Caterpillar D7 Engine


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  #1  
Old 03-20-2006, 09:30:37 AM
Dustin D Ehli Dustin D Ehli is offline
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Default Caterpillar D7 Engine

Hello all, does anyone know where or if it would be possible to find an engine for a caterpillar D7, we have 2 at home but one has the engine block split right down the middle from lack of antifreeze and a North Dakota winter. our D7's have a very large 4 cylinder diesel engine with a 2 cylinder gas starting engine on the side of the diesel. are there junkyards with this kind of stuff?
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Dustin Ehli
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Old 03-20-2006, 11:08:58 AM
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Tanner Remillard Tanner Remillard is offline
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Default Re: Caterpillar D7 Engine

You might try Jim Zimmerman out of Iowa. He is listed in GEM every month for Cat parts. Not sure if he would have what your looking for, but he probably has a good idea of where to find it. His number is 641-982-4207
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Old 03-20-2006, 11:13:13 AM
Jerry Willis Jerry Willis is offline
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Default Re: Caterpillar D7 Engine

Give me the serial# off the engine will check out here in CA. Jerry willis
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Old 03-20-2006, 11:52:54 AM
Dustin D Ehli Dustin D Ehli is offline
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Default Re: Caterpillar D7 Engine

thanks guys, i won't be able to get serial numbers or anything unitl this weekend when i go home because thats where the thing is and i am a broke college student so i probably wont purchase anyting very soon but i just wanted to know if they are out there for the future.
things like the D7 should not be that rare.
Thanks, Dustin
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Old 03-20-2006, 12:49:48 PM
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Ken Majeski Ken Majeski is offline
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Default Re: Caterpillar D7 Engine

There are a few different versions of the D 7 and Engine. The 7 M, the 3 T, and the 17 A, ( most 17 A's are Turbo) come to mind. They are out there as the D 8800 ? power unit used the same engine. A guy near here has about 3 or 4 of them sitting behind his shed... Some Good and some maybe not so good...??? Yup, some could be for sale...????
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Old 03-21-2006, 05:36:04 AM
Kiwi Todd Kiwi Todd is offline
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Photo Re: Caterpillar D7 Engine

Sorry no D7 available, but I went and retrieved this old RD7 Cat engine for a friend yesterday....Quite a job as it turned out. I think the engine alone was around 2 tons +....this one is about 1935 I think?.

Kiwi Todd
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Old 03-21-2006, 09:02:00 AM
Dustin D Ehli Dustin D Ehli is offline
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Default Re: Caterpillar D7 Engine

Kiwi that looks like the same engine that is in our d7's
Dustin
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Old 03-21-2006, 12:17:40 PM
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Default Re: Caterpillar D7 Engine

If you look below the seat on the Left rear corner of the main Chassis you should see the serial number stamped there. It should start with 7M, 3T, or 17 A and that should tell you what type of engine you need. Actually the 3T that I had had an older 7 M engine so you can interchange them to a point. The 7M and 3 T had a dry clutch where the 17 A was a wet clutch.
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Old 03-21-2006, 09:50:48 PM
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Default Re: Caterpillar D7 Engine

I thought the earliest D7s could have the 9G code just like the RD-7. Maybe I'm remembering wrong.
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Old 03-21-2006, 11:04:02 PM
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Default Re: Caterpillar D7 Engine

Well they made D 7's way before the one that I had so you could be right. I think the one I had was sometime in the early 50's... I know it had the earlier 7M engine as I know the guy that changed it.

Only piece of Cat Equipment I have now is a 212 Grader.... That has the same engine as a D 2... Just a Little Squirt...
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Old 09-02-2008, 10:52:17 AM
Buick8 Buick8 is offline
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Default Re: Caterpillar D7 Engine

Try this forum for Caterpillar enthusiasts: http://www.antiquecaterpillar.org/

Don't give up, they are out there. My dad had a 3T with the dry clutch, it had quite an engine. Blocks can be repaired if they are cracked, but it may cost less to find a used one.
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Old 09-02-2008, 11:20:25 AM
Ryan Anderson Ryan Anderson is offline
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Default Re: Caterpillar D7 Engine

Dustin,

I'm sitting at work in Cat's engine division in Mossville, IL.
Perhaps I can get you some information if you can provide some numbers, years, model, etc.
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Old 09-04-2008, 08:25:28 AM
6point9diesel 6point9diesel is offline
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Default Re: Caterpillar D7 Engine

Quote:
Originally Posted by Kiwi Todd View Post
Sorry no D7 available, but I went and retrieved this old RD7 Cat engine for a friend yesterday....Quite a job as it turned out. I think the engine alone was around 2 tons +....this one is about 1935 I think?.

Kiwi Todd
That looks like a pretty happy little helper!

Paul
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  #14  
Old 09-04-2008, 08:36:15 AM
Grant McEwan
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Default Re: Caterpillar D7 Engine

Dustin, Go North to Winnipeg! Call 1-204-667-2867 Cambrian Equipment and ask for Iron Mike. There is over 20 acres of old girls there! Grant
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Old 03-20-2010, 11:23:58 PM
oldcatguy oldcatguy is offline
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Default Re: Caterpillar D7 Engine

that would be a D8800 eng, 5 3/4 X 8 bore - stroke, I'm taking a pony eng off tomorrow of a parts eng. because i need a crank for a D13000 pony and they are the same
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Old 03-20-2010, 11:58:03 PM
Gene Williams Gene Williams is offline
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Default Re: Caterpillar D7 Engine

Check in at WWW.ACMOCBB.Org. There are some knowledgeable CAT people over there that should be able to help you.
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Old 03-21-2010, 06:26:21 PM
Terry Welch Terry Welch is offline
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Default Re: Caterpillar D7 Engine

We have three D7s at Rock River down in Edgerton WI, at least two are parts machines. Two are 3 T's, the other has a 3T engine if I am not mistaken, One was rebuilt we were told be the former owners son. One is owned by a member, so no luck there. Too bad you dont need a 2U D8 motors as I am helping clear out a yard in ILL and there are 4 D8 parts tractors there. Two more that are possible pieces for restoration including a either very early D8 or a Gas 70 that was converted with 8 power unit.
Terry
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Old 03-22-2010, 10:49:11 PM
goodmanmb goodmanmb is offline
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Default Re: Caterpillar D7 Engine

We have a complete spare motor from a 3T that is stuck but otherwise complete and no cracks. Also I have a lot of parts off the chassis as we made one out of two for use on our farm. We are a little far away up here in NY but let me know if you ever decide to do anything because all it's doing right now is sitting. We also took a running pony out of our other 3T and made it a direct start. I think it had a clutch issue when mating to the big motor but that may be of use to you too. I have collector friends here that run up to ND every year. They are a good old machine and very reliable, good luck!
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Old 02-29-2012, 01:47:31 AM
kta1150c750 kta1150c750 is offline
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Default Re: Caterpillar D7 Engine

if you need old cat parts call rays equipment in nocona texas.
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Old 03-01-2012, 12:22:57 AM
Oilpulled Oilpulled is offline
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Default Re: Caterpillar D7 Engine

There are a number of engines in an open air museum in Western Illinois as extra, apart, probably both D-7 & D-8 and partially disassembled transmissions too. It would take a good half day to figure it out. Daughter said complete machines not for sale, but she sold a rare Sterling dual ign engine for a yard ornament. I put covers and cans on a few engine exhausts where I could.
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