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Todays find, Caterpillar Air Cooled


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Old 05-07-2016, 10:05:00 PM
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Photo Todays find, Caterpillar Air Cooled

Acquired this engine today, was told it originally came off of a 1940s? Caterpillar pull type road grader, it was used to operate the adjustments on the grader instead of being manually operated. It is one seriously heavy beast. Im calling out Kris Golden for not sticking around to help me load it But in his defense he did "push" me a little into acquiring it, dont know if that was a good thing or not

Any info on this engine is greatly appreciated.

Patrick
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Old 05-07-2016, 10:07:09 PM
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Default Re: Todays find, Caterpillar Air Cooled

A few more.............

Patrick
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Old 05-07-2016, 10:08:47 PM
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Default Re: Todays find, Caterpillar Air Cooled

Very rare and well made.
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Old 05-07-2016, 10:18:27 PM
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Default Re: Todays find, Caterpillar Air Cooled

Im liking the oil bath and pre-cleaner, just like the one on my brothers 1945 Cat D2.


Patrick
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Old 05-07-2016, 10:24:55 PM
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Default Re: Todays find, Caterpillar Air Cooled

The engine spins over nice. It has a primer cup on the top side of the intake manifold elbow and a compression release lever on the side.

Patrick
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Old 05-07-2016, 10:56:54 PM
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Default Re: Todays find, Caterpillar Air Cooled

Very nice! I would love to have one of those in my barn.
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Old 05-07-2016, 11:14:41 PM
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Default Re: Todays find, Caterpillar Air Cooled

The mags gonna need a coil if anyone knows a source.

Patrick
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Old 05-08-2016, 12:48:14 AM
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Default Re: Todays find, Caterpillar Air Cooled

nice engine for mag parts i would try marks magneto
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Old 05-08-2016, 01:25:32 AM
Donkeypull Donkeypull is offline
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Default Re: Todays find, Caterpillar Air Cooled

That thing looks like a beast, and looks sweet. I'm guessing 16hp?
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Old 05-08-2016, 06:16:03 AM
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Default Re: Todays find, Caterpillar Air Cooled

Okay, I've looked at the pics but don't see any way to crank it.

How is it started?
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Old 05-08-2016, 06:35:22 AM
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Default Re: Todays find, Caterpillar Air Cooled

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Originally Posted by Elden DuRand View Post
Okay, I've looked at the pics but don't see any way to crank it.

How is it started?
i see a rope notch in the outer pulley groove.
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Old 05-08-2016, 07:25:09 AM
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Default Re: Todays find, Caterpillar Air Cooled

very nice complete find, governors seem tobe the weak link. 1472 made for cats 3 largest pull type graders from 1932 thru 1940. yours is missing a shroud, no problem and easy to make. i don't quite understand how u start urs too? theres a cat collector in utah that knows all there is about these 800g engines. some were used as power units not on a grader but sold thru oil well supply companies. some ran on propane. they are cats smallest engine ever. and only second aircooled engine besides the aircolled tank engine for ww2. i think urs is a propane very rare only 1 maybe known in antique cat club! heres mine.



http://www.acmoc.org/bb/showthread.p...659#post146659

https://youtu.be/qKmGZ7gI3Jg

https://youtu.be/kBJoK3POfhA

they were a option on these type graders.

Last edited by mschreiber; 05-08-2016 at 07:49:58 AM.
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Old 05-08-2016, 10:03:36 AM
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Default Re: Todays find, Caterpillar Air Cooled

So this engine is a little older than first thought. The shroud missing that your speaking of, your talking about the one that appears to be on the side of the head/jug in your photo? I'll get some close up photos of the carb posted but I think you may be correct on it being the propane set up. The notch in the pulley was added (homemade) this was evident when I first saw it, I figured the engine was originally belted to a starter since the shroud is fully screened in. The guy I got the engine from said a guy had told him that he had seen others with a similar notch. Im starting to get even more giddy now then when I first acquired the engine

Patrick
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Old 05-08-2016, 10:24:11 AM
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Default Re: Todays find, Caterpillar Air Cooled

Quote:
Originally Posted by Nevr-Enuf-Stuf View Post
So this engine is a little older than first thought. The shroud missing that your speaking of, your talking about the one that appears to be on the side of the head/jug in your photo?

Patrick
yes its around the rear of the jug and covers the rear of the head. its shown after 4:32 of the first video. its made of 3 pieces, spot welded together. i think i got another 1 from another 800g i got that could be loaned out for pattern. i pm'd u my number, great find.
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Old 05-08-2016, 10:27:10 AM
Doug Tallman Doug Tallman is offline
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Default Re: Todays find, Caterpillar Air Cooled

Maybe you should call out Kris and give him a big hug for pushing you to buy it?? At least a good thanks!!
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Old 05-08-2016, 01:01:46 PM
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Default Re: Todays find, Caterpillar Air Cooled

Here are some pictures of my Caterpillar Pull Grader another project not enough time.
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Old 05-08-2016, 06:39:01 PM
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Default Re: Todays find, Caterpillar Air Cooled

The mechanicals look a lot like a 1950's Cat motor grader.
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Old 05-08-2016, 06:45:19 PM
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Default Re: Todays find, Caterpillar Air Cooled

The carburetor is a Zenith 9548B 7B4718. Havnt been able to find any info about it much less any reference to it at all on the internet.

Patrick
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Old 05-08-2016, 07:28:49 PM
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Default Re: Todays find, Caterpillar Air Cooled

that carb is slightly similar to the d2/4 pony carb. call these guys 2 see if that might be propane. u have a 4d s/n, according to cat historian the oil field power units used a 1n s/n prefix. (note last link in this post), if its propane i think its oil field supply application.

http://www.thecarburetorshop.com/Mar...ng_Numbers.htm
http://www.mcdonaldcarb.com

heres more info.

http://www.acmoc.org/bb/showthread.p...646#post115646

---------- Post added at 06:24:38 PM ---------- Previous post was at 06:11:44 PM ----------

Quote:
Originally Posted by Nevr-Enuf-Stuf View Post
The carburetor is a Zenith 9548B 7B4718. Havnt been able to find any info about it much less any reference to it at all on the internet.

Patrick
the 7b number is a cat part number, the other is a zenith part number.

---------- Post added at 06:26:49 PM ---------- Previous post was at 06:24:38 PM ----------

Quote:
Originally Posted by Lauren View Post
Here are some pictures of my Caterpillar Pull Grader another project not enough time.
whats the engine s/n please?

---------- Post added at 06:28:49 PM ---------- Previous post was at 06:26:49 PM ----------

Quote:
Originally Posted by Donkeypull View Post
That thing looks like a beast, and looks sweet. I'm guessing 16hp?
5.5 hp. @1600 rpm.

Last edited by mschreiber; 05-08-2016 at 07:22:14 PM.
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Old 05-08-2016, 07:53:08 PM
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Default Re: Todays find, Caterpillar Air Cooled

So your saying that if the carb is a propane application carb then this engine could have been an oil field engine with its fuel supply actually coming from the well?

Patrick

---------- Post added at 06:50:22 PM ---------- Previous post was at 06:43:39 PM ----------

In that ACMOC link you posted thats clearly a gas carb.....Marvel Schebler?

Patrick

---------- Post added at 06:53:08 PM ---------- Previous post was at 06:50:22 PM ----------

Quote:
Originally Posted by Lauren View Post
Here are some pictures of my Caterpillar Pull Grader another project not enough time.
It could be that my engine is missing its rope start pulley, as shown on your engine.

Patrick

Last edited by Nevr-Enuf-Stuf; 05-08-2016 at 08:06:04 PM.
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