D318 pony motor crank bearing

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Tydavis

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I'm wondering if anyone has a part number for the aluminum bearing that sits just behind the seal in the front cover plate. It's the plate you take off right behind the flywheel on the pony. Cat didn't stamp the part number on it just wrote on it and most the number did are off. Thanks for the help.

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Tue, Dec 20, 2016 9:23 PM

ccjersey

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4F9319 standard
4F9318 0.020" under
1H2783 0.030" under

4B2396 is the seal

Most folks have problems with the bearing on the opposite end. Very common for the dowel pin that retains it to fall out and let the bearing move forward. Then the crank/flywheel can move in and out too much.

D2-5J's, D6-9U's, D318 and D333 power units, 12E-99E grader, 922B & 944A wheel loaders, D330C generator set, DW20 water tanker and a bunch of Jersey cows to take care of in my spare time😄

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Tue, Dec 20, 2016 10:30 PM

Tydavis

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Reply to ccjersey:

4F9319 standard
4F9318 0.020" under
1H2783 0.030" under

4B2396 is the seal

Most folks have problems with the bearing on the opposite end. Very common for the dowel pin that retains it to fall out and let the bearing move forward. Then the crank/flywheel can move in and out too much.

Awesome thanks for the information ccjersey. I'll give it a look before I put it back together. I noticed that the front bearing had a little play. I had to pull the cover because the front seal was slinging oil out everywhere

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Tue, Dec 20, 2016 11:29 PM

ccjersey

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Main bearing journal diameter is listed as 1.995-2.000 inches. I ordered a standard one for a small pony motor several years ago and found that my crankshaft had already been turned undersize. Expensive way to measure a crankshaft!

D2-5J's, D6-9U's, D318 and D333 power units, 12E-99E grader, 922B & 944A wheel loaders, D330C generator set, DW20 water tanker and a bunch of Jersey cows to take care of in my spare time😄

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Wed, Dec 21, 2016 1:57 AM

Tydavis

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Reply to ccjersey:

Main bearing journal diameter is listed as 1.995-2.000 inches. I ordered a standard one for a small pony motor several years ago and found that my crankshaft had already been turned undersize. Expensive way to measure a crankshaft!

I got the new crank bearing in the mail today. I'm having a problem with the little pin that goes thru the bearing and the crank that holds it and keeps it from spinning. It's goes between the two holes that are for the oil to get thru. Does anyone happen to have the part number for it?

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Wed, Dec 28, 2016 11:43 AM

gemdozer

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Reply to Tydavis:

I got the new crank bearing in the mail today. I'm having a problem with the little pin that goes thru the bearing and the crank that holds it and keeps it from spinning. It's goes between the two holes that are for the oil to get thru. Does anyone happen to have the part number for it?

The dowell pine 2a3435 for the bearing

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Thu, Dec 29, 2016 1:41 AM

Tydavis

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Reply to gemdozer:

The dowell pine 2a3435 for the bearing

Awesome! Thank you gemdozer!

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Thu, Dec 29, 2016 11:48 AM

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