bobcat mini mt 55 help motor timing

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bwbigred

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Dec 13, 2009
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10
just got a new injection pump for my mt 55 which has a d902 3 cyl kubota diesel, before i install it i heard it needs to be timed correctly before it is installed please need help would like to do this project this weekend thanks
 

Tazza

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Dec 7, 2004
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It should be factory set. It may have shims under the pump that adjusts the timing by a few degrees.
Install the pump, make sure the pin on the rack goes into the slot in the control arm, this is the post important part of all, if you don't, it will run flat out till something lets go or runs out of fuel.
There is a procedure to check it, but the one i know is for a V2203/V1702. I don't know if that engine has a injection mark on the pulley or not. The V1702 has a pointer and a crank pulley with FI marks.
 
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bwbigred

Member
Joined
Dec 13, 2009
Messages
10
It should be factory set. It may have shims under the pump that adjusts the timing by a few degrees.
Install the pump, make sure the pin on the rack goes into the slot in the control arm, this is the post important part of all, if you don't, it will run flat out till something lets go or runs out of fuel.
There is a procedure to check it, but the one i know is for a V2203/V1702. I don't know if that engine has a injection mark on the pulley or not. The V1702 has a pointer and a crank pulley with FI marks.
There were no shims when I took the old one out I heard someone said cyl1 had to be at top dead center I just don't want to mess anything up
 

OldMachinist

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May 24, 2006
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There were no shims when I took the old one out I heard someone said cyl1 had to be at top dead center I just don't want to mess anything up
http://i245.photobucket.com/albums/gg49/calfranch/Bobcat/MT/IjectionPumpTiming1_zpsa2a66d38.jpg
 photo IjectionPumpTiming1_zpsa2a66d38.jpg

http://i245.photobucket.com/albums/gg49/calfranch/Bobcat/MT/IjectionPumpTiming2_zpsf24ef536.jpg
 photo IjectionPumpTiming2_zpsf24ef536.jpg
 

Tazza

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Staff member
Joined
Dec 7, 2004
Messages
16,840
http://i245.photobucket.com/albums/gg49/calfranch/Bobcat/MT/IjectionPumpTiming1_zpsa2a66d38.jpg

http://i245.photobucket.com/albums/gg49/calfranch/Bobcat/MT/IjectionPumpTiming2_zpsf24ef536.jpg
That's the part that i didn't know existed, the one that goes over the starter to line up on the fly wheel. The rest of the procedure is how i do it on other models. Just as long as you don't go too deep into the pump when removing the delivery nozzle, i can't stress that enough.
 
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