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D7 3T pony motor not starting

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1 year 1 day ago #248526 by ctsnowfighter
Good News
Perserverence pays dividends!

Dozer raises by itself? Hydraulic or Cable?
If cable you most probably have a sticking clutch, need to check to clean it up and adjust. Something you should do before you tackle the right brake and oil cooler.
You do not want to have dozer reach limits and pull something apart.

CTS
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1 year 1 day ago #248527 by V14
Replied by V14 on topic D7 3T pony motor not starting
It's CCU double barrel rear winch, need to figure out how to get some cable for the rear winch portion since it has none. Yes that will be a priority though, had to move a tiny bit then stop let the blade back down then move some more just so it wouldn't keep trying to pull up while maxed. It wasn't doing that when I went to look at it before buying though so maybe something got stuck or knocked loose when shipped. I'll try and grease it first before pulling the case open. 

carb will be rebuilt this weekend kit is out for delivery then i will figure out the oil cooler after those two issues are solved. The brake works still just very sticky doesn't want to push in easy or return but is still usable so that's the lowest priority but all of these will be fixed before any work gets started.
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1 year 1 day ago #248529 by ctsnowfighter
Cable Control Unit - CCU is not the same as a "winch" in terminology

Look on the "unit" for a tag and then find the operators/parts manuals for that attachment.

Typically, CCU was two drums for operating a cable unit scraper or using a single drum for the dozer.

CTS
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1 year 1 day ago #248530 by V14
Replied by V14 on topic D7 3T pony motor not starting
I see. Well I'll be ordering the manual for the CCU tonight just have to run outside and figure out the model in a bit.
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1 year 1 day ago #248532 by V14
Replied by V14 on topic D7 3T pony motor not starting
I looked all over the ccu and there is no identification at all. What was interesting is that there is a serial number plate on the back left under the ccu that says 4t but the one on the engine says 3t. 
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1 year 1 day ago #248536 by ctsnowfighter
Pictures help a lot - Post Pictures of the CCU
Many here with much better knowledge than I on the Model #s, etc.
Nothing says the engine could not have been changed.

CCU - may or may not be Caterpillar -
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1 year 1 day ago #248537 by V14
Replied by V14 on topic D7 3T pony motor not starting
It's a 25 model CCU already ordered a manual for it. I was thinking it may be a 4t with a 3t engine swapped in after seeing that. Not really much difference between the 4t and 3t from what I have seen browsing this forum.
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1 year 1 day ago #248542 by rax200
There is a no 25 course manual in the technical library

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
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1 year 1 day ago #248543 by V14
Replied by V14 on topic D7 3T pony motor not starting
This is what I got.
Attachments:
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1 year 1 day ago #248544 by V14
Replied by V14 on topic D7 3T pony motor not starting
I prefer hard copies 
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