875 the first hydro

[bds1984 1,429]

On 4/26/2019 at 7:54 AM, p38js said:

And now to try and get this to fit on a short frame

It can be done!  I have always loved the sound of a big Briggs opposed twin!

[Pullstart 62,842]

16 minutes ago, 19richie66 said:

We use these on mowers. 190 cranking amps. You can get them a larger. 

 

That looks like it’s a spec. model fir JD, do they make a red top?

[Pullstart 62,842]

16 minutes ago, 19richie66 said:

We use these on mowers. 190 cranking amps. You can get them a larger. 

 

That looks like it’s a spec. model for JD, do they make a red top?

[p38js 401]

12 hours ago, pullstart said:

 

That looks like it’s a spec. model for JD, do they make a red top?

This looks like a great option I will have to get measurements 

[p38js 401]

Does anyone know what this adjustment is for?

[ebinmaine 67,458]

9 hours ago, p38js said:

Does anyone know what this adjustment is for?

@daveoman1966

@pfrederi

?

 

[gt14rider 759]

That is a dampening valve, takes up pressure from acceleration valve to reverse valve,  manual stats clean with solvent, check for damage to the  pin or ball or if valve rattles when shaken, replace valve.

[p38js 401]

33 minutes ago, gt14rider said:

That is a dampening valve, takes up pressure from acceleration valve to reverse valve,  manual stats clean with solvent, check for damage to the  pin or ball or if valve rattles when shaken, replace valve.

Gt14rider do you think that will solve my problem,  the transmission will take off in forward and almost pull the front end off the ground and barely move in reverse?.  I’m in the process of changing out all the o-ring in the reverse circuit and polishing the valve seats,  in the hopes that I have an internal leak

[p38js 401]

On 5/2/2019 at 8:09 AM, bds1984 said:

It can be done!  I have always loved the sound of a big Briggs opposed twin!

I think they sound awesome and they seem to have a lot of power and are smooth

[ebinmaine 67,458]

1 minute ago, p38js said:

I think they sound awesome and they seem to have a lot of power and are smooth

Is that a similar engine to what would have been in a Bolens st160?

That was a Briggs and Stratton twin.

Sounded great.

 

[p38js 401]

@ebinmaine i’m not sure about the Bolens but it is the same as a c161 twin

[gt14rider 759]

I think you are on the right track,  check springs and orings, forward and reverse valves, also check valves and springs item 9 and 10. Trouble shooting chart, Erratic engagement...... follow flow chart, check towing valve / hydrogear tune - up. Sundstrand manual,  

[gt14rider 759]

Also check speed control lever for full travel and tention, make sure cam plate moves all the way, so you get full forward and full reverse range

[p38js 401]

1 hour ago, gt14rider said:

I think you are on the right track,  check springs and orings, forward and reverse valves, also check valves and springs item 9 and 10. Trouble shooting chart, Erratic engagement...... follow flow chart, check towing valve / hydrogear tune - up. Sundstrand manual,  

That’s was my thought if none of that works I two extra rear ends to try

[bds1984 1,429]

On 5/3/2019 at 11:22 AM, p38js said:

I think they sound awesome and they seem to have a lot of power and are smooth

They are grossly underrated and get a bad rep for many being put into cheaper mowers and poorly maintained.  My parents had one in a Yardman GT and it was a very smooth running engine that had power all day long.

[p38js 401]

I think I found my transmission problem new o rings and robbed springs from another transmission, can’t ops check yet waiting on a pump out put shaft seal 7877 sound be here this week. Does any one have a source for new springs?

[gt14rider 759]

Nla, if you find some let us know, looks like most common problem, try to flush as best you can, pieces of spring will wreck pump.

[953 nut 55,205]

24 minutes ago, p38js said:

Does any one have a source for new springs?

Several years back @refracman had a source for the acceleration springs, send him a PM and see if he can help.

[p38js 401]

25 minutes ago, gt14rider said:

Nla, if you find some let us know, looks like most common problem, try to flush as best you can, pieces of spring will wreck pump.

I flushed out the passages with some brake clean ran a magnet in all the bores and was getting some fine metal.  Drained the fluid and installed a new filter,  I hope I got all of it 

[gt14rider 759]

Check plugs on bottom of the pump housing, Allen heads.

[Sarge 3,463]

Have you tried LJ Fluid Power for the springs?

 

Sarge

[p38js 401]

I swear this little tractor doesn’t want to go to the show, so I was trouble shooting the very slow in reverse motion and jerk your head off your shoulder and pull the front end off the ground.  I noticed that when in reverse there was a trail of fluid, so here is the problem

[p38js 401]

Lucky me I have 4 hydro units from several Gt14,  I took one apart and inside was completely trashed but the housing for the drive gear is in good shape,  I now have two cuted hydros now to make a Frankenstein hydro hoping for the best

[p38js 401]

Ok guys here it is twin Briggs on a 875, has anyone tried this yet need a little help,  looking for options on an air filter, and trying to cut as little as possible out of the hood here is what I got so far,  I’m going to get a 1/4inch piece of flat steel to mount the engine on so I can move it around on the frame

[Pullstart 62,842]

So cool!  Once you get the 1/4” plate under the engine, try cutting various blocks of wood at a certain thickness to sit on the carb and see if the hood clears.  In die making we used modeling clay to run a die over in the press to see where the stop blocks needed to be.  Maybe you could build a carb hat to relocate the filter like the GT-14?