C-160 Auto drive belt spring

[Trouty56 567]

The tension spring broke on the 160 auto and I am looking for replacement. Anybody have a dimension for it. It is part #9170. I'm not sure the one that broke was the correct one. It is slightly less than 3 1/2 inches long. Maybe I can get a substitute at TSC or a hardware store. If not I'll order one if it is available yet.

On a side note the belt that was on this tractor is the correct length and width but I can't get it to disengage. Seems the pump is running all the time even when the tension handle is pulled to release the tightener. It is a very stiff belt.

Thanks for any input.

[massey 118]

Bob,

I have the same issue with disengaging the belt on my 160, it is always turning the pump. I put an 84" belt on from Tractor Supply on it, so I will be watching for an answer also.

Ed

[WH854 44]

P/N 9170 is still avalable!! Check here!

http://www.rcpw.com/search/?quest=9170

If you have a Toro Dealer in your area I'm sure he can get you one

The drive belt should turn on an Auto all the time because of your Hydrolic Lift.

Your belt P/N should be 7478 Here

http://www.rcpw.com/search/?quest=7478&sea...=36&search.y=14

Hope this helps

Chas

[WheelHorse_of_course 99]

When the spring broke on my Charger, I got something at the hardware store and it works just fine. While you have access put a touch of grease on the sliding parts.

Also check the idler while you have it apart. If it turning but has more play than it should at least you can order a spare and have it on hand when you need it.

have fun!

:thumbs:

[Trouty56 567]

Ed,

Does the 84 inch belt make a difference?? Will it disengage? Well it is supposed to be 84 inches!! Never mind...brain fart!!

Chas,

I'm sure it really doesn't matter if it runs all the time but there is an engage/disengage and I guess I would like it to work as it should or as I think it should.

WheelHorse_of_course,

I'm going to check out a couple places before I order one and drive to the remote Toro dealer to get it. I'll grease up the hardware before reassembly.

Thanks guys,

[wallfish 17,079]

It should release the belt when the tension lever is pulled and not turn the pump. It helps for easier starting in the winter.

[Trouty56 567]

Thanks John. Now that makes sense. I wounder why Ed and I are having difficulty with this? :thumbs:

[wallfish 17,079]

I'm not sure if your tractor has the "tabs" on your belt guard or not. If you see tabs on the engine pulley side of your belt guard then you can try tweaking them a little closer to the pulley. The belt needs to be supported around the engine pulley to disengage from it. If it's not supported and guided correctly then the belt falls into the pulley and turns no matter how loose it is.

[Trouty56 567]

Well now....that might be the problem. I don't see any tabs on my belt guard at all!!

Terrible belt guard but it is the only one I have. Two of the mounting points are butchered. One at the engine pulley (shown here) and one on the bottom of the guard that is attached to one of the foot board bolts.

[wallfish 17,079]

I'm not 100% sure if that model should have the tabs on the guard or not since I've never owned one. Maybe someone with more experience will chime in and let us know.

This is what I was thinking of. Of coarse this one is used for a different application and your pulley would be in front but it shows a tab. Yours looks like there is a support for the bottom of the belt though. Mabe the guard is sitting out of position because of the mounting holes. Maybe some tinkering in that area with the guard will solve the problem??????

[WH854 44]

Is this a picture of your belt guard

Chas

edit nylyon: Fixed picture

[Trouty56 567]

Ed actually made one of them during his restore of C-160. Nice job too. Here it is!!

Real nice job. He has pics of it finished too but you can see the style of the belt guard.

[Trouty56 567]

I just rolled my belt out on the floor and it is about an inch shy of 84. It does make it start harder though. The starter grinds when the belt is on but has an easier go of it when the belt is off.

Guess I'll start getting longer belts till it works correctly like an inch at a time!! Ed already has an 84 so maybe an 85 if I can find it.

[gwest_ca-(File Mod) 11,096]

Toro's 7478 replaces 4535 and listed as HB/5Lx84.22"

In 1981 Wheel Horse had 2 different lots of 7478 belts. One had the part number printed with silver paint and was tighter. These were to be remarked as part # 4535 and used on 78 and later C-Series with Sundstrands.

The 7478 belts with a red painted part number were to be used on 1977 and prior models. (These must have been longer or narrower making for a looser fit.)

This is from Product Service Bulletin #314

Now Toro replaces the 4535 with 7478.

Garry

[WH854 44]

:thumbs: That must be 1975-76 model like 1975 C 160 Automatic Model # 1-0481,61-16KS01,S02,S03,S04.

That belt cover you are showing is on that model

Chas

[WH854 44]

Here is picture of the belt cover and other parts!!

Chas

[Trouty56 567]

It is a 1975 model and that is the guard. Interesting info that Garry shared about the belt lengths. I may be seeing the Toro dealer after all and measuring some belts.

Wonder what 8-87 is in that parts breakdown. It isn't in my parts manual.

[WH854 44]

Garry Leaves his tracks all over

Chas

[massey 118]

Bob, maybe an 85" from tractor supply would work.

If I remember right, 8-87 supports the seat pan and 8-73 is the bolt that goes through it, at least on mine as the seat pan doesn't tilt on my tractor.

[Trouty56 567]

OK!! That makes sense. About the seat pan that is. Mine tilts back.

About the belt...that is the direction I am going to go for now. I have a friend who works there and if it won't work he said I can take it back. Hopefully it will. I'll post an update when I try it.

[WH854 44]

Go here and put 1-0481 in hit search will show you a break down of your Tractor.

https://lookup3.toro.com/partdex/index.cfm?...Toro〈=us_en

Chas

This one is even better

https://homeownersolutions.toro.com/portal/...25&PageID=30034

Chas

[WH854 44]

Every body SPARKY has a list of all models at the top of the picture gallery

Chas

http://www.wheelhorseforum.com/index.php?showforum=29

[Trouty56 567]

Well I never noticed that. I have a listing on the PC but I always have to navigate to it and open it up. Since I always have this site open it is always just a click away!! Cool!!

[WheelHorse_of_course 99]

I just rolled my belt out on the floor and it is about an inch shy of 84. It does make it start harder though. The starter grinds when the belt is on but has an easier go of it when the belt is off.

Guess I'll start getting longer belts till it works correctly like an inch at a time!! Ed already has an 84 so maybe an 85 if I can find it.

How about the pulley on the transmission - could that have been changed out?

:thumbs:

[Trouty56 567]

That thought crossed my mind along with the idler assembly. I don't know the diameter of what the pulley should be but it fits in the cutout of the belt guard like it seems it was designed. :thumbs: