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D4-7U series

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3 years 3 months ago #230298 by Bluegrass1985
D4-7U series was created by Bluegrass1985
Does anyone know a generic oil seal number for the crankshaft seal on the pony motor. I want to have one on hand before I tear it down.

Thanks Don

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3 years 3 months ago #230304 by Elton
Replied by Elton on topic D4-7U series
Don,

When I did my pony motor this spring, I got everything I needed from my local CAT dealer Carter Machinery. While I wouldn't call it cheap, it is OEM stuff and was good quality at a reasonable price. Some original CAT stuff is priced to drive you to the aftermarket, other stuff is pretty reasonable. The pony parts are pretty much only from CAT.

Elton

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3 years 3 months ago #230308 by trainzkid88
Replied by trainzkid88 on topic D4-7U series
oil seals and bearings are the pretty much the only parts that are readily available aftermarket as they were and still are supplied aftermarket to cat. if you can read the bearing or seal numbers its no problem to source most bearing shops can also simply measure the old part and match it. if you can find your self a bearing bible you become a man that's good to know. sadly they are not published in hard copy any more.

the one part that is always cheaper from cat is the button head grease fittings since its still used on later equipment and cat buys them in bulk you get the benefit. the basic rule is common stuff is reasonably cheap especially if used on more modern gear. a parts book is a big help. i have been able to find parts via googling the cat numbers and getting the national stock number anything that was supplied to the U.S government has a national stock number you can use that to get generic part no's or find the current cat pn. it also has size specs aswell i had to make a gear to adapt something via the nsn database i was able to find out the pitch and type of gear i was mating with.

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3 years 3 months ago #230320 by d4angelo
Replied by d4angelo on topic D4-7U series
My book shows: 1B2245 which goes on the pulley end. There is another one on the opposite end that has part number 2B6005.

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3 years 3 months ago #230325 by rax200
Replied by rax200 on topic D4-7U series
Hi d4angelo,
The seals have updated,
1B2245 goes to 5H7953
2B6005 goes to 5K2595

Regards

Daryl

1937 RD4 4G4368
1940 D4 7J3717
1942 D4 7J9915SP
1942 R4 6G2550SP
1944 D4 2T6584SP
1945 D4 2T8978SP
1946 D4 5T6271
1956 D4 7U37855
1954 DH226 S/N 89 Howard Tug
The following user(s) said Thank You: Shaban1983

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2 years 9 months ago - 2 years 9 months ago #235981 by Shaban1983
Replied by Shaban1983 on topic D4-7U series
There's a typo there.
Timing gear side seal: 2B6005 -> 5K2595
Pulley side seal: 1B2245 -> 5H9753 (not 5H7953)
Last edit: 2 years 9 months ago by Shaban1983.
The following user(s) said Thank You: Fat Dan

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2 years 9 months ago #236011 by rax200
Replied by rax200 on topic D4-7U series
Hi All,
Sorry for the typo.

Regards

Daryl

1937 RD4 4G4368
1940 D4 7J3717
1942 D4 7J9915SP
1942 R4 6G2550SP
1944 D4 2T6584SP
1945 D4 2T8978SP
1946 D4 5T6271
1956 D4 7U37855
1954 DH226 S/N 89 Howard Tug
The following user(s) said Thank You: Fat Dan, Shaban1983

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