112 Grader pony

rockymnt
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2 years 7 months ago #235490 by rockymnt

112 Grader pony was created by rockymnt

I have a 112 grader 2M999 with the D4400, it has a pony but does not run, and this pony is rope start only. The question I have is, would a pony motor from a 7U D4 work on the D4400, the 7U pony is electric start.

Rockymnt

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Old Magnet
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2 years 7 months ago #235504 by Old Magnet

Replied by Old Magnet on topic 112 Grader pony

The basic pony block and innards are the same but just about everything that bolts to the block will need to be changed to D4400 arrangement. As far as the electric start you will need to compare parts book arrangements as not all components are the same. Starters are different with the D4400 version being push button activated where the later units are solenoid switch.

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rax200
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2 years 7 months ago #235518 by rax200

Replied by rax200 on topic 112 Grader pony

Hi rockymnt,
OM is correct, the only other thing to look out for is the water inlet to the top of the pony motor. On the early 6U/7U it will be the same as the D4400 engines, the later 6U/7U uses an elbow fitting to connect the two together.
If this is the case you will have to change the top (manifold) of the pony motor over.

Hope this helps

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

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rockymnt
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2 years 7 months ago #235523 by rockymnt

Replied by rockymnt on topic 112 Grader pony

Outstanding information, thank you very much !

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