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Crawlers, Dozers, Loaders & Backhoes Discussion Board

I'm a bit stuck / Roosa Master DB FI pump question

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Posted by steve n carol on December 23, 2012 at 00:08:33 from (

First, thank you jdemaris - and all of the rest of you who have shown me the way to overhaul this unit. I finally took the time to get into it.

the Manual helped much! The Manual doesn't address all of the differences associated with the DB & JDB pumps, but I'm getting there.

Manual Page 10-5-1 States that the pump is of CLOCKWISE rotation, as viewed from the drive end of the pump. The pump I am working on is CC rotation. I am working with the flyweights down and away from me. I have installed the new solid cage w/o the flex plate (upgrade), the original was disintegrated!

I then stacked the rollers in their respective shoes, placed the cam ring over the rollers with the directional arrow facing up and to me, in the clockwise position, (I believe this is how I removed it), Thus when viewed from the drive end of the pump, it is pointing to rotate CC. Manual figure 10-10-45, shows this opposite. Making the pump rotation Clockwise.??

When I get to the TRANSFER PUMP LINER, I am getting confused and stuck. I don't remember which side of the liner faces away from the drive end, weight cage) of the pump.

Manual page, 10-10-18, shows the liner and the different marks. (Remember I am re-assembling this with the weight cage is at the bottom of the stack of the hyd head.

I think the manual is setting this pump to rotate Clockwise....

Q) which way am I to set the directional arrow for the correct rotation for the cam ring and transfer pump liner?

Thanks, Steve


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