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Hydrostatic Transmission Maintenance?


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Posted
I have owned my 7117 since about 2000. I bought it from a dealer that had gone over it quite well. One of the things he had done was to drain and refill the transmission fluid and replace the filter. Other than periodic slipping going down a really steep bank, I have no complaints about my transmission. However, I'm getting a little concerned that I have NEVER done anything to the transmission. Is there any maintenance routine that I should be doing? How often should I change the fluid? What do I use? How often should I change the filter? I checked the fluid the other day, and it was right up to the rim of the tube in the back. It evidently hasn't leaked a drop since 2000. I would like to change the filter because the dealer used a full-size filter that interferes just a little with the belt when I use my vacuum bagger...the belt rubs a little on the filter. Just enough to wear the paint off the filter. I have noticed that the OEM filter is a little bit shorter.
Posted
Guy The manual says check every 100 hours or yearly, change filter every 400 hrs. Changeing to the smaller filter will not cure the belt rubbing problem. The cure is a Rear PTO drive kit part # 1685225 it is around $30.00 at least it was last year when I bought one.
Posted
quote:
Originally posted by UCD
Guy The manual says check every 100 hours or yearly, change filter every 400 hrs. Changeing to the smaller filter will not cure the belt rubbing problem. The cure is a Rear PTO drive kit part # 1685225 it is around $30.00 at least it was last year when I bought one.
I'm not being sarcastic...what does "check" mean? I'll order up a new filter. What does the rear PTO drive kit do? Does it just lift the belt a little bit?
Posted
In my many years in the garage business "Check the oil" meant look at the oil, check the color and condition, to do this put a drop or two on a thumb nail and let it run across the ridges. The oil should be a clear red and no particles in it and check the level in transmission/crank case. The rear PTO drive kit is a backside idler on a bracket mounted on the outside of the left frame behind the cone clutch.

Posted
Maynard in all my years in service stations/trucking industry and outdoor power equipment I've never heard a better description for checking the condition of oil or hydro fluid. That's one I'll use daily at the service desk.
Posted
Quick question... I ordered a new filter. When I change it, I would imagine I'll lose a little bit of fluid. What do I replace that with? I've got some extra Dexron sitting around. Can I just use that?
Posted
YES. Fill the filter before you install it then top off reservoir.
Posted
I don't mean to be dumb, but I am. Shouldn't I only fill the filter 1/2 way? I have to stick it on horizontally. After I put on the new filter and top off any fluid, should I run the transmission forward and back a little to get fluid flowing through, then top it off again?
Posted
Download the 7100 series Operators manual. The procedure for changing filter and adding fluid is under normal care page 20 and 21.
Posted
Just thought I would give you all a little update on this. I decided that transmission fluid costs $1.89 per quart, so for about $8.00 I could buy enough new transmission fluid to just go ahead and change it. I'm glad I did. The old stuff looked like used motor oil, only thinner. Brown, not red. So, now I've got a nice new filter and bright red Type F transmission fluid. It doesn't seem to run very much differently, but I've only run it up and down the driveway to test it out. Thanks for pointing me in the right direction. Everyone is always so helpful here.
JohnFornaro
Posted
I changed the oil and filter on my 7116 last year. I just assumed that Type F fluid was good. Glad to see it confirmed. Now here's a question. I put on a "Simplicity" filter, which cost about $20 or so. Is there a generic filter available from Fram or Advance Auto, that will also do the same job for $3.99? I noticed that my wife's Volvo filter is about the same size... Thanks
Posted
Napa Gold 1335 will work just fine and save you $$$$$.Been using them in my 7116
Posted
Do not, repeat Do not use a Fram or other cheap brand name one size misfits all generic filter. All filters are not created equal. Just because 2 filters look alike they are not. There are different gasket sizes, internal thread sizes, pressure relief/bypass valves, anti siphon valves or lack of the above. Also different grades of filter media. Some good after market brand name filters to use are Wix, Napa, Baldwin. If these Companies list a filter for your application you can be sure it meets or exceeds the OEM specks for you unit. The Napa, Wix and Baldwin filters work, there has been documentation of problems with the off brand name filters i.e. Fram
Posted
quote:
Originally posted by JohnFornaro
I changed the oil and filter on my 7116 last year. I just assumed that Type F fluid was good. Glad to see it confirmed.
Type F was listed in the Owner's Manual as a suitable fluid, along with the Simplicity and Deutz-Allis OEM fluid.
Posted
To set the record, Fram is no longer a name to consider being cheap. They were absorbed by Allied Signal (Garrett turbochargers and jet engines)and Allied was absorbed by Honeywell Corp along with Autolite parts and Prestone. A corporation that large, for the most part, doesn't want its image connected to making junk. Today I would feel pretty comfortable finding Fram filter plants as opposed to finding NAPA. You might be real surprised to find out that NAPA buys it filters from Fram as they have only a few manufactoring plants. Twenty years go I would have agreed with Maynard, about Fram not today, they are a real heavy weight. Twenty five years ago I would have said foreign auto plants in the US wouldn't make it. I rest my case.
Posted
BLT The last I knew Napa was getting their filters from WIX. Drop the first digit from A Wix Filter number and you have a NAPA filter number. Fram is a mass merchandiser Their filter #'s are one size misfits most. Cheap materials, missing pressure relieve/bypass valves, anti siphon valves, etc = cheap prices. In the garage business I see too many problems related to Fram filters to say anything good about them. Open up a Napa/Wix filter and a Fram filter for the same application and it is not hard to see the differences.
Posted
Napa filters are made by Wix. http://minimopar.knizefamily.net/oilfilterstudy.html
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