Roosa master rebuild

[Martin0804]

Hey guys, currently planning on rebuilding my Roosa master dbgfcc. I was wondering if anyone knew if the service Manual was available for download anywhere ?? Thanks.

 

[Jim.ME]

Google it, there are several manuals out there. Check all the info/numbers on your pump against the manuals. Roosamaster is a Stanadyne product.

 

[JDEM]

I have a Deere tech manual in PDF that covers it. The Deere manual is just the Stanadyne/Roosamaster tech manuals along with the specific specs of the pumps that were used on all the Deere tractors. So all the pump info is there but if you do not have a Deere, it will not have the specific specs on your pump. Nothing you ought to need anyway unless you have changed the max fuel delivery setting. Deere tech manual SM-2045.

 

[mfitzpatrick2]

On the rotary pumps there is a timing advance mechanism and there is a pin that must be threaded out/removed, it looks like a mini trailer ball.

This pin takes a special bit and some have used a hex/allen wrench but usually this will split/break the head of pin.

Be careful not to break it or it's a pain in the *SS to get out. Been there, done that!

Do not strike the top to break loose. Striking the top of pin can crack/break the pump ring as it is very hard/brittle. Been there done that!

I made a sleeve that captures the outside of the pin while using a hex wrench and it has worked well.

Hope all goes well!

 

[showcrop]

JDEM is withholding major information here. He was a JD technician for many years and is very knowledgeable and experienced. He has successfully rebuilt many of these pumps, some on the tailgate of his pick-up truck.

 

[JDEM]

It is called a Bristol wrench (the proper tool). I have noticed that most Stanadynes rotary-distributor pumps on Fords did not use that Bristol bolt and used a simple Allen head bolt instead. Deere for sure always had the Bristol. Deere also offered field-adjustable timing advance whereas many other companies that used Standayne did not.

A proper Bristol wrench costs less then $10. Even with the proper wrench, the ball-headed bolt can break if not careful.

 

[Dieseltech]

The early pumps with bolt on advance were common with the 7/32 Allen cam screw. While I have the Bristol tool I stopped using it YEARS ago when Stanadyne changed the new replacement screws to Torx head. A modified Torx tool with .001 inch taken off all six flutes works great in the Bristol screws too. I average three-four complete tear down, repair, and calibrate of D series pumps each week, don't remember when I've replaced the Torx bit I'm using now..

 

[JDEM]

Torx makes a special bit called Torx Plus that fits better. I personally never needed it since I still have a dozen of the OEM Stanadyne wrenches.

 

[Dieseltech]

You must have different Torx Plus bits than I do, the TP-45 I have won't fit at all, and the TP-40 is much too loose. Stanadyne SB 186 shows their tool #24992 can be used on the #15438 Bristol cam screw, it's replacement #33627 T-45 cam screw, and #21134 High Load cam screw, also T-45.

 

[GGB80]

Good evening, I don't want to interrupt the group, but since you are talking about injection pumps I was hoping to find out if there is bolt and nut replacement part available for this nice CB pump. I tried with JD, but the part is obsolete.

Picture attached below:

This post was edited by GGB80 on 07/05/2022 at 07:04 pm.

 

[wore out]

DEERE still has the screw/bolt available, R70513 @ some $2.00.

As to the nut, R45058, nla, knowing the hole size and depth it's ''shoulder'' fits into and the screw size and threads threads it would be EASY to make on the lathe from hex stock.

(You must be looking for 9 and 16, looks like 10 is still there?)

 

[GGB80]

Thank you "wore out". The nut is actually what I am looking for since I snapped the little inner sleeve where the actual thread is. I was lucky enough to be able to utilize the backing which somehow was left with perfect whole that I was able to make the bolt latch onto. I was hoping to find an original in order to get it fixed properly.

By the way if someone else is looking for a one man heck for the removal of anything on the crawler loader or dozer I found this 12 volt hoist that did the job for me and was able to attach it to the track and it worked very nice and easy. Only $500 from Amazon.



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This post was edited by GGB80 on 07/09/2022 at 07:04 pm.