Luffydog wrote:Doesn't look to be hydro gear pump from the pic. Also look the see if there is a snap that holds it in. That might be the input shaft. Hard to tell from the pic.
KE4AVB wrote:I thinking it is the Eaton 771.
Can you Verify if it is the Eaton 771? If so I can send you the service manual.
RMR wrote:Thanks for the help guys. There are no numbers on this thing anywhere. But yes it turns out to be a Eaton 771. While you were posting up useful info for me, I went back out to the shop and just dove in. I got the pump rotor off of the oil journal post finally. It turns out my problem lies there as well. The brass clenched bushing has swollen to the point it doesn't have the right tolerance to let it rotate any more. I'm not sure what caused this or even that it was possible for that to happen. I'll call the customer in the morning and give him the good news. Now I'm looking having to buy a used unit on eBay for $600, or sanding it down a .001 at a time til it fits, or hope to find a new bushing at a bearing store and drill all the oil holes by hand. There are pros and cons to all of the options unfortunately.
Fulltilt wrote:The problem with an adj. reamer is one chatter mark/grab and your screwed...there goes your close tolerance, no?
KE4AVB wrote:Fulltilt wrote:The problem with an adj. reamer is one chatter mark/grab and your screwed...there goes your close tolerance, no?
That's why you use your head and lightly ream things. Many think you go whole hog when doing it which is a sure way to get chatter plus it easy to over do it. Patience is key.
Return to Technical Discussion Forum
Users browsing this forum: No registered users and 39 guests