Engine removal - 763

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carl johansson

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I'm new to the forum - and to Bobcats as well. I just decided that my tired old ford 8N couldn't do all that I needed it to do, so I made the switch to a 763. Actually i bought 2 763's - the serial numbers are pretty close - one had all of the maintenance done - in great shape - but they toasted the motor - the other has a pretty strong motor - but maintenance on hydraulics drive unit etc was ignored. So my plan is to swap in the good engine into the well maintained unit - and just keep the other unit around for parts. Anyway, I started removing the engine yesterday, looks to me that it can be removed by itself (you do not need to take out the hydrostatic drive - correct? And it looks like once you undress the engine - you remove the radiator and oil cooler - then the plastic shroud and cooling fan - and can reach through there to get at the front motor mounts - am I seeing this correctly (I have ordered a FSM - but I can't wait for it to arrive - I need this unit up and running) . Anyway you would unbolt the started and motor from the massive iron "shroud" on the left side - then just shift the engine a few inches right - and pull it out! I have to be missing something here - the factory service calls this a 10 hour job - so what an I missing - where am I thinking incorrectly? all help - particularly coming from experience - is greatly appreciated! Carl Johansson Auberry Ca.
 

Tazza

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As far as i am aware, you don't need to remove much at all just the belt, hoses and wires and mounting bolts and it should slide out. The radiator and blower shouldn't need to go unless access is a real issue. The pumps are belt driven so i see no reason why they need to go too.
With that said, i have never pulled an engine on an east/west facing machine. As long as the engines are the same model i see no problem.
 

skidsteer.ca

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As far as i am aware, you don't need to remove much at all just the belt, hoses and wires and mounting bolts and it should slide out. The radiator and blower shouldn't need to go unless access is a real issue. The pumps are belt driven so i see no reason why they need to go too.
With that said, i have never pulled an engine on an east/west facing machine. As long as the engines are the same model i see no problem.
I do believe it is common to pull the motor and hydros/pump together as opposed to separating from the belt housing. But I'm not sure its necessary and have never had do do one to date. You can buy brand new engines outright for 4000 plus freight out of Nebraska too.
Ken
 

Tazza

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I do believe it is common to pull the motor and hydros/pump together as opposed to separating from the belt housing. But I'm not sure its necessary and have never had do do one to date. You can buy brand new engines outright for 4000 plus freight out of Nebraska too.
Ken
Thats what i was thinking too. Throw a new engine or even re-co the old one and sell the other one with so so hydraulics. Thats what i would do at least.....
 

Fishfiles

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Thats what i was thinking too. Throw a new engine or even re-co the old one and sell the other one with so so hydraulics. Thats what i would do at least.....
I have one out right now getting rebuilt and I have always pulled the motor and the pump together , which takes between 2-3 hours to pull it and strip it down , I don't really have to take too much off as the rebuilder does a lot for me , I have tried pulling just the motor and found it much harder that way , I don't remove the blower box , a short chain with shackles tight across the two lifting eyes and a forklift balances out pretty close , you can get a print to fab a motor pulling arm from your dealer , but it really ain't worth the trouble
 

skidboy

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I have one out right now getting rebuilt and I have always pulled the motor and the pump together , which takes between 2-3 hours to pull it and strip it down , I don't really have to take too much off as the rebuilder does a lot for me , I have tried pulling just the motor and found it much harder that way , I don't remove the blower box , a short chain with shackles tight across the two lifting eyes and a forklift balances out pretty close , you can get a print to fab a motor pulling arm from your dealer , but it really ain't worth the trouble
Unless I want to do some work on the hydrostats I never take out the whole assembly. I believe it's better to leave all the hoses etc. alone and extract the motor if it's only the motor that I am wanting to work on.Make sure you support the motor before you undo the front engine mount bolts.
 

Fishfiles

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Unless I want to do some work on the hydrostats I never take out the whole assembly. I believe it's better to leave all the hoses etc. alone and extract the motor if it's only the motor that I am wanting to work on.Make sure you support the motor before you undo the front engine mount bolts.
Skidbob , you don't find it hard to unbolt and then line up and rebolt the engine mount on the inside of the motor , do you take out the blower box and fan drive to access that mount , the first few I did I only pulled the motor , my buddy the service manager at Bobcat showed me how they did it and I have never gone back , maybe a little more to unscrew but a lot easier screwing
 
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carl johansson

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Skidbob , you don't find it hard to unbolt and then line up and rebolt the engine mount on the inside of the motor , do you take out the blower box and fan drive to access that mount , the first few I did I only pulled the motor , my buddy the service manager at Bobcat showed me how they did it and I have never gone back , maybe a little more to unscrew but a lot easier screwing
Well after consulting the Bobcat service mechanic - it's definitely easier to pull both units as one. So I'm now ready to pull engine #1, having unhooked whatever is in the way! . As for the guys who suggested rebuilding or a new engine - and have 2 machines. I thought long and hard about that - but it came down to - I bought both machines for 6K I will have 1 great working machine with lots of spare parts - and no extra outlay of cash. Then I can rebuild the damaged motor at my leisure - and decide what to do with it then. I just didn't want to get into it any deeper than the 6K it cost me! Thanks for all the help guys. I'm sure I will get stuck somewhere along the line and be back for more help! Carl Johansson
 

skidboy

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Well after consulting the Bobcat service mechanic - it's definitely easier to pull both units as one. So I'm now ready to pull engine #1, having unhooked whatever is in the way! . As for the guys who suggested rebuilding or a new engine - and have 2 machines. I thought long and hard about that - but it came down to - I bought both machines for 6K I will have 1 great working machine with lots of spare parts - and no extra outlay of cash. Then I can rebuild the damaged motor at my leisure - and decide what to do with it then. I just didn't want to get into it any deeper than the 6K it cost me! Thanks for all the help guys. I'm sure I will get stuck somewhere along the line and be back for more help! Carl Johansson
Fishfiles,I find that it's quicker to take the motor out on it's own.I don't take the fan housing out.The bolts on the front mount are a little tricky,but with a floor crane holding the engine up,it's a lot easier.Also the job can be done by one man and I also dont spill any oil.I can have an engine out in just over an hour,but i have done many.
 

skidsteer.ca

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Fishfiles,I find that it's quicker to take the motor out on it's own.I don't take the fan housing out.The bolts on the front mount are a little tricky,but with a floor crane holding the engine up,it's a lot easier.Also the job can be done by one man and I also dont spill any oil.I can have an engine out in just over an hour,but i have done many.
Carl
If you can take some digital pictures, Id like to see how this goes. we can help you post them if you like.
Ken
 
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carl johansson

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Carl
If you can take some digital pictures, Id like to see how this goes. we can help you post them if you like.
Ken
Ken, well it's sort of to late for this one - I already have it out - however since it is an engine swap - I will take photos of the other removal - as well as the swap and reinstall. Perhaps it will help others down the line. Carl Johansson
 

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