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Huber M850A
- Thread starter materthegreater
- Start date
Welder Dave
Senior Member
I wouldn't trust the hour meter but it does look to be in good shape. It looks to be a lot less complicated than a conventional grader so repairs and maintainence should be easier. It would be great for doing driveways, parking lots and other basically flat grading operations. I wouldn't think it's really old, mid 80's looking at serial numbers of a couple others on Machinery trader. It looks like they still make them. Contact them and they should be able to tell you what year it is.
Huber Maintainer Specifications | Westernhubersales.com
Huber Maintainer Specifications | Westernhubersales.com
They were pretty common around here during the 80s with small paving companies. Most of them have switched to skid steers for driveway prep and I don;t see them so much anymore. Can't help with your questions but it's good to see one being put to use.
materthegreater
Senior Member
Thanks for the advice. Seems to me that it would be so much better than a skid steer for grading driveways because of the tilt/angle/side shift blade. Still not as versatile as a regular grader though
Welder Dave
Senior Member
They are about 1/4 the price of a full size grader.
materthegreater
Senior Member
I did end up buying it. Does a pretty good job!
Dave, you're right the hour meter doesn't work.
Welder Dave
Senior Member
It should do a great job for you.
materthegreater
Senior Member
I'm trying to fix the fuel leaks on this (among other things). It's leaking from the bottom of the injector pump. I'm thinking the gasket or whatever seals this odd shaped piece to the bottom of the pump housing is leaking. Is it ok to take it off and reseal it, or will parts fall out and I won't know how to put it back together?
Or, maybe it's leaking from the round end cover and dripping down onto the other part. Hard to tell.
This is a Perkins engine but I don't know anything else about it. There are some numbers stamped on the side of the block.
Or, maybe it's leaking from the round end cover and dripping down onto the other part. Hard to tell.
This is a Perkins engine but I don't know anything else about it. There are some numbers stamped on the side of the block.
materthegreater
Senior Member
Well I took the end cover off. Looks like there's a rubber seal in there. I guess at almost 40 years old (if it's original) it decided to leak.
materthegreater
Senior Member
I was able to seal up the end plate assembly.
With some research, I discovered that this appears to be a CAV DPA pump. Attached is a diagram that I found which is quite similar. The odd shaped piece on the bottom that I mentioned earlier is still leaking, though I think I've fixed all the other leaks. According to the diagram it is the "advance device". I guess I'll be taking it off next chance I get and try to seal it up.
With some research, I discovered that this appears to be a CAV DPA pump. Attached is a diagram that I found which is quite similar. The odd shaped piece on the bottom that I mentioned earlier is still leaking, though I think I've fixed all the other leaks. According to the diagram it is the "advance device". I guess I'll be taking it off next chance I get and try to seal it up.
materthegreater
Senior Member
The next most obvious fuel leak is coming from the fuel shutoff shaft. This pump doesn't have the hydraulic governor as shown in the above diagram so it looks a little different. The picture below shows the fuel shutoff shaft. Does anyone know what type of seal the shaft has?
Welder Dave
Senior Member
The pumpguy knows what you need and the part numbers but if I recall you can't buy them separate. You have to buy a kit. I had the same thing happen on my tractor. The kit was about $65cad. if I recall. Apparently there are some online sellers of just the parts you need for about $10 which would save you some $$ since you're in the US. I think you need the seal and a new cover gasket, maybe something else. Need to pay attention how it comes apart and put it back the same way. Be careful not to disturb the little spring that can go in a few different holes under the cover.
Welder Dave
Senior Member
It might be cheaper going through a Cav distributor or online if you need injection pump parts.
eastroad
Well-Known Member
Pump parts are available through a Deere dealer. Look at the parts breakdown for a 2150 tractor—that is one aplication where Deere used the CAV pump. They refer to it as “Roto Diesel”. Two o-rings on each shaft and a washer under each nut that holds the cover on. Add a gasket under the cover and you’ll have all you need. Keep things clean, and pay attention to which hole the spring is assembled in. Several good videos on you-tube that you should watch before you dig in
Welder Dave
Senior Member
Perkins used a lot of Cav pumps and Massey Ferguson may have parts but like I found out and was informed by the pumpguy you can't just buy the individual parts you need from a tractor dealer or Cav/Delphi distributor. You have to buy a kit or look for a smaller kit with just the parts you need on E-bay.
eastroad
Well-Known Member
4 of T24647 o-ring (Deere) A-T24647 (A&I part #)
2 of TT24599 washer (Deere)
1 of R5220622 gasket )Deere). A-R520622 A&I part #)
2 of TT24599 washer (Deere)
1 of R5220622 gasket )Deere). A-R520622 A&I part #)
Welder Dave
Senior Member
Good on JD for having the individual parts. Curious how much they cost compared to buying the complete kit knowing JD parts aren't the cheapest.
eastroad
Well-Known Member
As with a lot of things, package quantity is the kicker. I think the o-rings were two in a package, I don’t remember the package size on the washers, and the gaskets were 5 or 10 in a package. M dealer added them to a bin location and then sold them individually to me.
It helps that I used to work there, before they became a part of United Ag & Turf. Google the part numbers for a range of prices, but the gasket shows at about $34, and that sounds like what I paid. Pretty pricy, but they look like they are made of asbestos, and that price probably reflects special handling they have to do. The rest of the parts were reasonable, though.
It helps that I used to work there, before they became a part of United Ag & Turf. Google the part numbers for a range of prices, but the gasket shows at about $34, and that sounds like what I paid. Pretty pricy, but they look like they are made of asbestos, and that price probably reflects special handling they have to do. The rest of the parts were reasonable, though.