I recently purchased a D1105 to replace a blown up unit in an RTV I have. The only problem is that this one was from a Generator/Light plant. I am looking for information on how to adjust the fuel pump to get the new motor to rev similarly to the one that was in the RTV. The new motor is set up to idle at 1800 rpm, per the sticker, and I have read here that the RTVs are shooting for somewhere closer to 3000. Can anyone point me in the right direction? I am also doing research, but the info is scattered and confusing to me. Thanks for the help.
Adjusting Engine Speed on D1105
- Thread starter ArcticOrange
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Russell King
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I believe that you will have to replace the governor in the new engine so it can go above the set 1800 RPM. There may be other things you need to change (injection pump, injectors,…?).
You may be able to swap them from the existing engine?
I know that the same questions have been asked before and answered so you might try to search for some information (if you haven’t already).
You may be able to swap them from the existing engine?
I know that the same questions have been asked before and answered so you might try to search for some information (if you haven’t already).
North Idaho Wolfman
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You will need to swap the complete governor assembly out and the springs.
You will need to compare the fuel cams, you might need to swap those.
There will be other adjustments to make once you swap all of that out.
You will need to set the timing on the gears when you swap the governor out.
Make sure you keep the injection pump shims with the block it came on as that set the injection timing.
You will need to compare the fuel cams, you might need to swap those.
There will be other adjustments to make once you swap all of that out.
You will need to set the timing on the gears when you swap the governor out.
Make sure you keep the injection pump shims with the block it came on as that set the injection timing.
Thank you both, I have been searching around here but nothing i find lines up exactly with what I am doing, I gotta believe its out there. Sounds like it's not as simple as just backing out a screw. This is my first foray into diesel injection pumps. One thing that worries me about swapping parts from the old unit is I suspect someone tried to turn it up to get some more speed from it and maybe caused the failure, the old one always was hard starting, smoked on startup, and seemed like it was revving too high to me. It had been turbocharged as well, but eventually it got to the point where it wouldn't hold a head gasket for more than about an hour. I am trying to go back to a slow and reliable machine that wont break again.
In my research it seems like I should do a spill test with the 1800rpm block to determine what shims to use when I change it to 3000 rpm. Do you really think the fuel cams could be different? Injectors(how would you tell)?
Thanks for the input.
In my research it seems like I should do a spill test with the 1800rpm block to determine what shims to use when I change it to 3000 rpm. Do you really think the fuel cams could be different? Injectors(how would you tell)?
Thanks for the input.
North Idaho Wolfman
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You don't need to do a spill tests on the new one, the timing is the same regardless of the RPM's.
Just use the pump and shims on it.
Very unlikely the injectors or the injection pump is different.
You will need to follow the WSM on how to set up the fuel screws on the new model to match what the factory did to the old model.
Yes the fuel cams can be different (they all vary), it's not the fuel injection lobes that are different, it will be the way the governor attaches to the cam will be different.
Just use the pump and shims on it.
Very unlikely the injectors or the injection pump is different.
You will need to follow the WSM on how to set up the fuel screws on the new model to match what the factory did to the old model.
Yes the fuel cams can be different (they all vary), it's not the fuel injection lobes that are different, it will be the way the governor attaches to the cam will be different.
Ok thank you, I am starting to gain some clarity here, I was thinking the lobes would be different and I was confused... I will start looking for a WSM for the RTV 1100.
I thought I saw a work shop manual page for the 1105 that had different timing based on the rpms you were going for. I know I saw it here on a page during my searching. I should have saved it. There were 3 ranges, 1800, 3000, and 3600 rpms and depending on what you were going for you adjusted the shims to get there. I remember the numbers were close, but not identical.
I purchased the manual for the RTV1100 and it just has the one setting on it, probably the 3000 rm one. The manual I have has no info on adjusting the speed control plate. Do u have any manual pages you could share on this? Thanks again.
This is the page I was talking about that has the different shim heights for RPMs
