NAA hydro problem

Acder

New User
Just had my clutch rebuilt and when I got the tractor back the hydros wouldn't work. If I use the compressed air trick to get them going they work fine, but if the tractor sits for a few days I have to use the compressed air to get them going again. I have the vane type pump. Any ideas or suggestions to sort this out? Fluid level is correct per dipstick. Thanks.
 
Your sucking air either at the hydraulic steel pipe connections or the pipes themselves have an air leak. These pipes were removed when the tractor was split.
 
(quoted from post at 16:09:39 07/20/15) Just had my clutch rebuilt and when I got the tractor back the hydros wouldn't work. If I use the compressed air trick to get them going they work fine, but if the tractor sits for a few days I have to use the compressed air to get them going again. I have the vane type pump. Any ideas or suggestions to sort this out? Fluid level is correct per dipstick. Thanks.
ook for the lines that they disconnected to split the tractor. Replace the seals in them.
 
(quoted from post at 17:22:34 07/20/15)
(quoted from post at 16:09:39 07/20/15) Just had my clutch rebuilt and when I got the tractor back the hydros wouldn't work. If I use the compressed air trick to get them going they work fine, but if the tractor sits for a few days I have to use the compressed air to get them going again. I have the vane type pump. Any ideas or suggestions to sort this out? Fluid level is correct per dipstick. Thanks.
ook for the lines that they disconnected to split the tractor. Replace the seals in them.

probably the problem, but I'd like to add,
make sure they put the right bolts back in with any factory washers if it had them.
Had a NAA once that was making me chase my tail when I bought it. Lines ok, new o-rings (CNH) still acted like it was getting air.
Previous owner had put in bolts holding the flange that were a tiny bit too long. When you thought they were tight..they were bottoming out...and not compressing the o-ring properly on the intake side. go figure.
 
Well it looks like he removed the piping from the pump and the pump from the tractor from the looks of the new gasket material in those places doesn't look like he removed the pipes at the belly of the tractor.
 

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