Jump to content

Recommended Posts

I have a 1977 C-160 hydro, hydraulics work sporadically, never know when they will work or not. Changed out trans oil and new filter, I have manuals on Sundstrand transmission, but there is no troubleshooting concerning hydraulic lift. Can anyone help?

Share this post


Link to post
Share on other sites

Assuming tractor drives normally (good power even when warmed up)  i would suspect the implement relief valve.  The spring may be broken or the ball not seating well.that would preclude generating enough pressure to operate the lift.  (See page 5 and 35 in the manual) Do you have access to apressure gauge that will go up to 1000 psi to run a pressure test???

 

 

Welcome to Red Square!!!

Edited by pfrederi
  • Like 1
  • Excellent 1

Share this post


Link to post
Share on other sites

Thank you! 

I'll consult the manuals again. Mine are repro's - best I could find on net. I do have a gauge and will try a test. Based on your comment, I'd say, assuming the pump is building proper pressure, the relief valve must be sticking open. Do you have a reliable source for parts? Dealers around here are hit and miss on parts.

  • Thanks 1

Share this post


Link to post
Share on other sites

Try downloading this copy   Check with A to Z tractor in our vendors section here.  For new parts try LJ Fluid Power

 

 

power.JPG

  • Like 1
  • Thanks 1

Share this post


Link to post
Share on other sites
1 hour ago, ohioC160 said:

pump is building proper pressure, the relief valve must be sticking open.

:WRS:     I would agree that if it drives well the relief valve spring is the most likely suspect.        These manuals are another set for Sundstrand. In addition to A-Z and LJ Fluid you may be able to find some parts by contacting member @daveoman1966, he works with them.

Sunstrand Hydro (part 1).pdf

Sunstrand Hydro (part 2).pdf

Sunstrand Hydro (part 3).pdf

Sunstrand Hydro (part 4).pdf

 

  • Like 1

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now


  • Recently Browsing   0 members

    No registered users viewing this page.

×