Jump to content
Pat Marchwick

Years or models made with Hydrostatic pump release lever

Recommended Posts

Pat Marchwick

Living in cold weather can make starting a motor that is connected to a hydraulic pump harder. The models with the pull up double handle belt tensioner release lever allows the engine to start without having to turn over the hydraulic pump. What models or years was this built into the machine? Can this be added to the newer style machines like a 520h with the steering wheel forward reverse lever. I use a two stage blower in the winter for snow removal  and it works great for that but would start easier with that belt release option.

thank you in advance for your reply’s.

Share this post


Link to post
Share on other sites
 
pfrederi

I know that with the exception of the D series all Hydros from the original wheel-a-matic to the Eaton 1100 in the 400 series had a release lever.   Don't have any 500s

Edited by pfrederi
  • Like 1

Share this post


Link to post
Share on other sites
 
clueless

The Eaton 700 does not have a release, they came on some of the 300-A in the late '80, stay away from those, I believe all the Sunstrand models had a release,

  • Like 1

Share this post


Link to post
Share on other sites
 
Ed Kennell

My 1988 520H with Eaton 1100 has the belt release.

The 1991 312H with Eaton 1100 does not have the belt release.

I no longer have it but I think my 417 with the Eaton 1100 had the belt release.

Edited by Ed Kennell
  • Like 1

Share this post


Link to post
Share on other sites
 
953 nut
1 hour ago, pfrederi said:

the 400 series had a release lever.   Don't have any 500s

Mid to late 1990s with the direction control lever up by the steering wheel didn't have the belt tension release lever. The parking brake is tied in with the belt tension arm.

The 416 I got from you a couple years back is that way. I haven't looked closely at the interaction.

490039138_Screenshot(586).png.362a8f678c7adf096ec48ea3c41ebafb.png

  • Like 1

Share this post


Link to post
Share on other sites
 
953 nut
7 hours ago, Ed Kennell said:

I no longer have it but I think my 417 with the Eaton 1100 had the belt release.

Yes it did have a belt tension release lever as does my 418-C.

Edited by 953 nut
  • Like 1

Share this post


Link to post
Share on other sites
 
Moonshine*Connoisseur

My 1987 312-a has the tensioner release @clueless

  • Like 1

Share this post


Link to post
Share on other sites
 
Ed Kennell

Oh, forgot I have a 314A   Eaton 700 with the belt release.

  • Like 1

Share this post


Link to post
Share on other sites
 
kpinnc
10 hours ago, Pat Marchwick said:

The models with the pull up double handle belt tensioner release lever allows the engine to start without having to turn over the hydraulic pump.

 

I'm gonna be the naysayer... 

 

While in theory this is what was intended, I've never seen one release enough tension to start the engine without spinning the hydro. It will engage the park brake, but it doesn't allow for the engine pulley to freewheel. 

  • Like 1

Share this post


Link to post
Share on other sites
 
953 nut

@cleat is doing a restoration on a 416 (same as a 520 with a smaller Eaton). He may be able to give us some information on the interaction between the parking brake and belt tensioner if any exists.

 

  • Like 1

Share this post


Link to post
Share on other sites
 
Lee1977

My 1989 520-H has the release. I can't say it's complete free, but it won't move even with the parking bake not engaged.

Share this post


Link to post
Share on other sites
 
WHX??
2 hours ago, kpinnc said:

seen one release enough tension

All four of the tractors I have with it release it enough KP but yeah correct belt & idlers. 

 

You mention snow duty Pat. Des the tractor sit and wait awhile for snow and then start hard with lots of cranking? 

I guess I ask it 'cause that what my 520 snow machines do. 

I know what your saying tho the cold oil can actually snub the motor out. They say running synthetic oil helps. 

Edited by WHX??

Share this post


Link to post
Share on other sites
 
cleat
3 hours ago, 953 nut said:

@cleat is doing a restoration on a 416 (same as a 520 with a smaller Eaton). He may be able to give us some information on the interaction between the parking brake and belt tensioner if any exists.

 

Sorry, no release on this or any of my current machines.

The release (I believe just on older machines) just lifts the idler pulley up a bit to slightly loosen the belt with no interaction with the parking brake that I am aware of.

 

Edited by cleat
  • Thanks 1

Share this post


Link to post
Share on other sites
 
Ed Kennell
4 hours ago, kpinnc said:

 

I'm gonna be the naysayer... 

 

While in theory this is what was intended, I've never seen one release enough tension to start the engine without spinning the hydro. It will engage the park brake, but it doesn't allow for the engine pulley to freewheel. 

I gotta disagree.   I definitely hear the load on the engine increase when I engage the belt. Most noticable at low temp starts.

  • Like 3
  • Excellent 1

Share this post


Link to post
Share on other sites
 
Ed Kennell
4 hours ago, kpinnc said:

 

I'm gonna be the naysayer... 

 

While in theory this is what was intended, I've never seen one release enough tension to start the engine without spinning the hydro. It will engage the park brake, but it doesn't allow for the engine pulley to freewheel. 

I gotta disagree.   I definitely hear the load on the engine increase when I engage the belt. Most noticable at low temp starts.

  • Like 1

Share this post


Link to post
Share on other sites
 
kpinnc
37 minutes ago, Ed Kennell said:

I gotta disagree.   I definitely hear the load on the engine increase when I engage the belt. Most noticable at low temp starts.

 

Maybe I just don't use my tractors as often in very cold weather. Snow is very light here and temps are milder overall. 

 

OEM belts are also not available, so this may contribute as well. 

 

For my use, the release did nothing to reduce hard starts. As such I removed the linkages and replaced with sprung belt tensioning. 

  • Like 2

Share this post


Link to post
Share on other sites
 
Ed Kennell
10 hours ago, WHX?? said:

cold oil can actually snub the motor out

Yes, I have to let my P220 warm up and increase the RPM a bit or it will stall when I engage the cold hydro.

  • Like 3

Share this post


Link to post
Share on other sites
 
pfrederi

My snow horses are all Sunstrands  and the engine does drag down some on all of them when I engage the hydro. You can watch the belt it doesn't move when the hydro is disengaged.

  • Like 3

Share this post


Link to post
Share on other sites
 
Lee1977

I keep my 520-H in the basement It never gets below 64 degrees in the winter. As I keep a mower deck on it isn't used much out side in cold weather.

Edited by Lee1977

Share this post


Link to post
Share on other sites
 
Ed Kennell
13 hours ago, WHX?? said:

tractor sit and wait awhile for snow and then start hard with lots of cranking? 

Belt tension release and lectric fuel pumps make my starters and batteries happy.

  • Like 2

Share this post


Link to post
Share on other sites
 
WHX??
9 minutes ago, Ed Kennell said:

lectric fuel pumps

:text-yeahthat:The 520 with one always starts right up no matter the weather. One of the few mods that overrides the purist in me. I was going to suggest the primer bulb too. 

  • Like 2
  • Excellent 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

×
×
  • Create New...