Hello, I have what I believe to be a 87 550B dozer with the 4276T engine. The engine is in pieces but the short block is still
In the machine and has been exposed to the weather with the head off. Long story short I have a great 4039 that I would like to be able to use in place of the 4276. Does anyone have any insight? and if nothing will interchange any leads on a complete 4276T ?
Thank you in advance
550B engine swap.
Re: 550B engine swap.
Welcome to the Boards.
Your machine is on the new side of things here so there may not be many weigh in on this. I believe you can put a 4039 in place of your 4276T as I think the 4276 is included in the 4039 family of engines. You will need to swap a number of things over and you may need to have the front crank pulley modified if anything is driven from it, if the 4276T pulley won't fit the 4039.
The first thing to look closely at is the 4039 block. Is the left side smooth like your 4276T or does it show raised galleries along that side. If it has the raised galleries, it is not a structural block and there is a strength issue used in a tractor or crawler. Those were intended for things like compressors, generators and equipment where they were mounted front and rear on a frame, not used as a structural member. The picture below isn't the best but they give you an idea of what to look for on the left side (even thought the second one is showing the right side)
John Deere used to have some repower info and you might get some info if you ask your construction equipment dealer people. A web search for John Deere 4276T brings some up.
HTH,
Jim
Your machine is on the new side of things here so there may not be many weigh in on this. I believe you can put a 4039 in place of your 4276T as I think the 4276 is included in the 4039 family of engines. You will need to swap a number of things over and you may need to have the front crank pulley modified if anything is driven from it, if the 4276T pulley won't fit the 4039.
The first thing to look closely at is the 4039 block. Is the left side smooth like your 4276T or does it show raised galleries along that side. If it has the raised galleries, it is not a structural block and there is a strength issue used in a tractor or crawler. Those were intended for things like compressors, generators and equipment where they were mounted front and rear on a frame, not used as a structural member. The picture below isn't the best but they give you an idea of what to look for on the left side (even thought the second one is showing the right side)
John Deere used to have some repower info and you might get some info if you ask your construction equipment dealer people. A web search for John Deere 4276T brings some up.
HTH,
Jim
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