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Oliver, Cletrac, Co-op & Cockshutt Tractors Discussion Forum
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Re: Oliver 770 injection pump gear removal

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01-16-2013 12:37:35

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Thank you! Sounds like you've done a few. I did some homework, and learned that brass tube is called a "pilot tube", and it is cheap to buy, as is the seal kit. As for timing, I found the TDC mark on the flywheel, and pulled the energy cell plug on #1 to be sure it was on it's way up on a compression stroke ( finger in the hole test,lol). I could not find the FP mark on the flywheel. I think it is supposed to be 24 to 26 degres before TDC?? I'm betting it is just covered in crud. I feel confident I can get the motor barred over to the right place. I'm going to try and include a link to a video of my project. I'd love to have an experienced set of eyes see what I'm seeing in this pump. I have over 60 videos shot, but I'll try and add a link to the one with me examining the internals.

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J. Schwiebert

01-16-2013 19:18:58

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 Re: Oliver 770 injection pump gear removal in reply to stevewatr, 01-16-2013 12:37:35  
No your pump is not timed to the FP mark. The FP mark is for the Bosch pumps which are timed to the start of injection. The Roosa Master pumps are timed to the end of injection. Post the model of the pump and check your fleetline manual to see how many degrees before TDC it is timed to. If you would have lined the timing marks in the pump up before you took the pump off you would have had the timing correct

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01-16-2013 19:54:07

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 Re: Oliver 770 injection pump gear removal in reply to J. Schwiebert, 01-16-2013 19:18:58  
Maybe that's why I cannot find an FP mark on the flywheel? My pump model number is DBGFC627---1ED. I found in the manual where they mention timing for the pump, but the pump model is listed as DBGFC627---2BH or ---3BH. Somebody wrote in with pen "FP mark on flywheel", then it says "6 degrees BTDC end of injection. I think I got that FP idea out of an IT manual I also have. I also found the roller to roller dimension I was looking for. Do I need to special jig that you hook an air line up to in order to set the roller to roller dimension?? Another thing, tonite I went to remove the pilot tube, and it seemed like I was putting a lot of force on it in my 20 ton shop press, and it was not moving so I stopped. I read that the replacement pilot tube gets glues in??? Could this one be glues in? The pump was serviced by some one at some point, because it has the solid governor weight retainer. By the way, Thanks for helping.

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01-16-2013 13:25:41

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 Re: Oliver 770 injection pump gear removal in reply to stevewatr, 01-16-2013 12:37:35  
Will try to check it out later tonight. If you like call after 7 PM IN time, would rather visit on the phone. Have been rebuilding pumps since mid 70's. five seven four eight nine three four one seven two. You will need to make a timing line on the new retainer also.

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01-16-2013 13:30:59

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 Re: Oliver 770 injection pump gear removal in reply to Dieseltech, 01-16-2013 13:25:41  
When I took it apart, I found it already has the upgraded weight retainer. I'd be happy to call you. May I have your first name? I feel kind of wierd calling a number and asking for "dieseltech" lol.

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01-17-2013 04:52:44

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 Re: Oliver 770 injection pump gear removal in reply to stevewatr, 01-16-2013 13:30:59  
Will be home tonite in the shop, call and ask for Richard.

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03-20-2013 07:12:57

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 Re: Oliver 770 injection pump gear removal in reply to Dieseltech, 01-17-2013 04:52:44  
Well, I got everything back together, and I think I did okay with the timing. But bad weather set in before I could try to start her. Just wanted to check in and let you guys know I made some progress. Audio/Video clip:Part 96

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