Getting HD7G and NEED a PART

A friend of mine is giving me his HD7G for cheap.  He's up in his 80's and his wife is bugging him to get rid of all of his equipment and finally hang it up. SOooo. I'm buying his HD7G and it needs a transmission oil pump.  He stripped it about 2 years ago.  He says the tractor runs fine but needs this part fixed. He says he didn't let it warm up enough before running it and that is how it happened.

If anyone has any advice for a new HD7G owner, I'm all ears. I do have the original 2 volume HD7G service manual by Jensales.

1I was noticing that too Darrel... unless that woman is one in a million... then American HomeStead is a doubly lucky man,,,

:) pictures taken when the Mrs was not looking. Removed quickly. ;)

Orange, the pump is a stock original from the 7g.

Anyone have a list of checks before I load her up and bring her home?

Say there American Homestead. I thinks you better keep hanging out on here for years to come. It could be a lot of fun. I don't have any insight for you on your 7, but I bet it'll be a lot of fun. If'n you know how to put pictures on here, we'd love to see some. Thanks, Darrel

On another note,what would cause the stipping here on the pump?  The former owner told me it's because he didn't let the 7G warm up 20 minutes before operation.  But I have seen videos on youtube where people fire up their 7G and drive off no problem. 

 Your pump must be a CESSNA PUMP  and the shaft parts number should be70628246 and you better check your inside pump before order a shaft.

Correction on the pump, is now a EATON Cessna, I had to order the nose housing as is broken on yours and get the seal package as mine was sucking air so bad. I have a donor tractor I pulled the engine/converter assembly out of, they had welded the shaft at the converter end gear. These are my 'Good ones' still in use which I believe are 14 spline, going to take to a Detroit diesel dealer and see if can match to a blower drive as it appears similar save the pump end collar. The other option is to convert the entire mess, pump, drive gear and couplers to something else.

CTuckerNWIL wrote: I think I'd be takin a look inside the pump before I spent any money on it.  When I was still workin, we repaired all kinds of equipment like that in the shop. Shafts can be welded up and recut and if the right process is followed, it can last a long time without "heat treat and quinching." There are work hardening materials out there too, kinda tough to machine sometimes, but a good shop will tell you if they can do it right.

Hub City makes splined shafts and couplings. A bearing dealer should be able to help. I do not think they make a 12 spline. I did have them make a special coupling for me but that was years ago.

It is a gear pump, two section taking suction from both the trans sump and the left hand side strainer. Is a Eaton Cessna and according to the hydraulics shop I use very much still available. Big issue will be the shaft and the couplers. The gear that drives from the converter is splined for this shaft not adapted. Would require a lot more to get it replaced that the pump.

Find a local machine shop that does prototype(small job) work. The majority can cut splines this small and work with better harder materials. Most will have access to other companies that produce spline shafting or couplers as well.

Also as I noted above look for a major hydraulic repair shop close by. Mine is 40 miles away. If they can locate materials they will attempt to purchase or build what is needed.

Need to ask, was the ear of the mount already broken or loos? If it was that will allow the pump to shift under load and do as shown. There is no tag for these pumps, the part numbers are right in front of you on the mounting flange. Eaton Cessna numbers.

Edited by DMiller - 20 Mar 2017 at 3:49pm

Just as  a future reference for your associated hydraulics shops, these are EATON 26507-RBM , Series S-26 hydraulic pumps.  Per my supplier for hydraulic parts he SHOULD be able to get these but would be in either 9 or 13 spline, then would have to modify or convert the drive gear in the converter(small side cover) to one of these and use available shafts.

Yea I got caught working on a chainsaw one time on the kitchen table I had a couple of news papers under it thought it would be ok but it wasent. I bought a dish washer at a auction one time for 10 bucks to put in my shop for washing chainsaw parts worked like a charm when my wife saw it she said I better not ever catch any parts in my dishwasher. but what she don't know I have used her oven for heating chainsaw crankcases in to replace the crank bearings lol


Edited by michale34 - 07 Apr 2017 at 12:55pm

one time my mom went to get some meat out of the deep freezer and there were 4 sleeves for a hd6 in there dad was watching wrestling and mom yell what the - - - - is this in my freezer