Jump to content
RJ Hamner

Loosing power after 30–40 minutes use

Recommended Posts

RJ Hamner

Now that we are finding more uses for the 1990 520H with a KwikWay loader I am experiencing some power loss in the hydro after about a half hour to 45 minutes??????

Ideas?

  • Sad 1

Share this post


Link to post
Share on other sites
 
lynnmor

What oil are you using in the hydro?

Share this post


Link to post
Share on other sites
 
953 nut

May be worth considering an in-line oil cooler added to the filter line. Wouldn't cost too much and would likely do the trick.

Picture 1 of 4

  • Excellent 3

Share this post


Link to post
Share on other sites
 
RJ Hamner
28 minutes ago, lynnmor said:

What oil are you using in the hydro?

That might be a good question. The PO said he had just changed the filter. I assumed (I know) that everything was OK and didn’t give it a lot of thought. So, I am guessing that the first step will be drain and replace?  And since you can’t drain All of the oil ??????  What oil is supposed to be used?  
Would the hydro oil have a distinct smell if burned or contaminated similar to the smell from old type A?

Edited by RJ Hamner
Another what if

Share this post


Link to post
Share on other sites
 
RJ Hamner

Looking at the flow chart in the Eaton 11 manual I’ve checked the level after every use and it’s been “in the green”. The fan and cooling fins were scrubbed and power washed right after I bought it. 
I don’t think I have overloaded it. Normally operate at 3000-3200 and use it mostly for mulch

Share this post


Link to post
Share on other sites
 
lynnmor

Always change all fluids when buying a used machine, there is no way of knowing what is in there.  Your Owners Manual will show the correct information. I use a NAPA 1410 filter and Castrol semi-synthetic high mileage 10W-30 motor oil.  Blasting the transmission with a pressure washer is a good way to get water inside.

Share this post


Link to post
Share on other sites
 
squonk

I would try 10W-40 synthetic. My C-160 with a Sunstrand can take both. It got weak when hot with 10-30 in it so I switched to 10-40 and it made all the difference.

  • Like 2
  • Excellent 1

Share this post


Link to post
Share on other sites
 
Snoopy11
7 hours ago, squonk said:

I would try 10W-40 synthetic. My C-160 with a Sunstrand can take both. It got weak when hot with 10-30 in it so I switched to 10-40 and it made all the difference.

Is there any way that you could go into detail as to why this is the case, Mike? I've never heard that before, but as someone with several hydros, I think this would be great to understand! :bow-blue:

 

Don

Share this post


Link to post
Share on other sites
 
squonk

Hydros work with very close tolerances. As they wear those tolerances open up. As they open up pressures drop and so does the power. As hydros get warmer those tolerances open up more. Thicker oil fills in the tolerance gap some. The same way 40 wt. oil will keep the oil light from flickering at idle on a 76 Caprice wagon with over 300,000 miles on it. :)

  • Excellent 1

Share this post


Link to post
Share on other sites
 
pfrederi

I think gear oil and or sawdust helped back then also:)

  • Haha 2

Share this post


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

Hydros work with very close tolerances. As they wear those tolerances open up. As they open up pressures drop and so does the power. As hydros get warmer those tolerances open up more. Thicker oil fills in the tolerance gap some. The same way 40 wt. oil will keep the oil light from flickering at idle on a 76 Caprice wagon with over 300,000 miles on it. :)

You really need to replace "tolerance" with clearance, being an old tool & die maker it drives me nuts.

  • Like 2

Share this post


Link to post
Share on other sites
 
Red-Bovine

10w30 motor oil in the transmission. Also check to see if the fan blades are still on the pulley and clear out any grass and debris around the transmission. The transmission will get really hot if the fan is missing blades and junk is packed around it.

  • Like 1

Share this post


Link to post
Share on other sites
 
RJ Hamner
1 hour ago, pfrederi said:

I think gear oil and or sawdust helped back then also:)

Kinda like oatmeal in the radiator:P

  • Like 1
  • Haha 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

  • Similar Content

    • Duramax7man7
      By Duramax7man7
      Very Solid tractor! Starts right up and Runs and Cuts like a Champ! 

      ONLY 419hrs

      FEATURES:
      Newer Agro Tires on Rear & Solid Front Turf Tires.
      Wheel Weights on rear.
      Fully Swapped Forward Swept axle and Steering off of 520h.
      New Tractor Supply Adjustable Seat.
      Exhaust Fully Restored. (Sandblasted, Outgassed and 2000deg High Temp Satin Exhaust Paint Coated.)

       I ran my 60" Deck on this tractor for over a year with no issues. 
      Deck it solid top to bottom with no rot and newer blades. Belt and Pulley are good to go! 
      She's just a little dusty and needs a cleaning. Can get a nice Seat a Tractor Supply. 
       
      Asking >>>>> $1,099 OBO <<<<<<< 

      (248) 943-8634 Text or Call.  God Bless. 




    • Duramax7man7
      By Duramax7man7
      Very Solid tractor!

      Newer Agro Tires on Rear and Solid Front Turf Tires. Wheel Weights on rear. Fully Swapped Forward Swept axle off of 520h. I ran my 60" Deck on this tractor for over a year with no issues. 
      Deck it solid top to bottom with no rot and newer blades. Belt and Pulley are good to go! 
      She's just a little dusty and needs a cleaning. Can get a nice Seat a Tractor Supply. 
       
      $1175 OBO   -POOS

      (248) 9for3-8six3four Text or Call. I do not visit this site enough. God Bless. 

      NEW SEAT INSTALLED ON THIS TRACTOR! Started it up and ran it for a while yesterday... Forgot how nice this thing is. Tempting to keep it but it's time to send her one her way. GREAT TRACTOR! 


       


    • lodestonefarm
      By lodestonefarm
      Selling my trusty WH520H.  ~880 hours (currently used for moving snow when needed so hours may rise) very solid machine, strong and hardworking.  20HP Onan, hydro transmission and hydraulic lift.  Has Matt's foot-pedal conversion for forward/reverse.  Included in the sale is a tall-chute snow blower and 60" mowing deck.  The blower is in excellent condition and is on the tractor currently.  The mowing deck has been a workhorse over the years.  No holes but could use some TLC, probably needs new spindles at some point and could use a couple spots touched up with welder also does NOT have any pulley covers/protectors (see photo).  Tractor has been an incredible tool, very solid and dependable and I'm certainly going to miss her when she's gone.   
       
      Recent maintenance: replaced the plugs this summer, fluids as needed (hydro has about 100 hours on fluid/filter; oil was done in the spring and has about 25 hours on it).  Battery is about 3 years old as are the tires, Terra Trac tires on the rear and turfs on the front.  The seat (with arm rests) isn't in great shape.  I've got a cover for the seat, never used.  It's never really bothered me but new seat cover is included in sale as are 4 hub caps, chains for the rear tires, and some misc spare parts (see photos).  
       
      I've owed this machine about 8 year and put ~350 hours on her.  She's not a show piece but could be restored.  Sheet metal is generally in shape, no rust however the hood does have a couple dings in it.  
       
      I'm only selling because I'm trying to help my son get a small lawn care business started and looking to move to a zero-turn.  The 60" deck is too large for our trailer, the mowing deck lacks pulley safety shields, and we'd like something that mows faster.  My only complaint with this machine is the top-speed (which isn't great when comparing to today's machines) otherwise she's a beast.  They don't make them like this anymore.  





    • Workin_Horses
      By Workin_Horses
      Nice solid clean 60" deck for 520H Model # C560SC04       $500 OBO





    • RJ Hamner
      By RJ Hamner
      I have a new-to me 1990 520 with a KwikWay loader. Have been going thu piece by piece and checking for anything that needs attention. Found some wobble in the rear hubs (both sides) the key ways on both the axles and hubs shoe some pretty heavy wear.  Was wondering if you have used the hub repair kits that A-Z sells and any comments good or bad?
      Thanks
      Bob
×
×
  • Create New...