Hayter H1842 transmission belt replacement

[Hobsini]

Yes, that’s better. First shows pulley that I’d expect to run/drive mower. Belt runs to back of mower (as shown in second of those pics). Lower pulley is connected to cutting deck and I assume powers that. The lever to the right of the seat is the hydro control or, at least, this was what I used to drive the mower forwards (and to reverse).

Other levers are for deck height and for grass collector.

 

[lostinthelight]

Can you take another pic further left showing the two pulleys that move together ?
If everything was working before the belt went then you may have moved something or got the wrong belt or the run wrong which is easily done

 

[Burnerman]

Looking at the photo of the transmission......is the belt actually on the pulley, next to the cooling fan? Its a bit difficult to see.
The transmission belt does look to be on the slack side, but that may be an illusion.
John

 

[lostinthelight]

Thats one reason I asked for the pic of both tensioning pulleys John

 

[Hobsini]

I’ll take some more photos as soon as I get a chance. That said, shouldn’t one of the wheels/pulleys be spinning irrespective of the belt fitting etc?

 

[lostinthelight]

I’ll take some more photos as soon as I get a chance. That said, shouldn’t one of the wheels/pulleys be spinning irrespective of the belt fitting etc?

Are you saying the top crankshaft pulley doesn't turn?

 

[Hobsini]

I think so. I can double check this at the weekend but with the engine running and the drive lever pushed forward I could still see nothing moving/spinning underneath.

 

[lostinthelight]

This is countax, anything look familiar?

 

[Burnerman]

Interesting, this one.....irrespective of the position of the drive lever, the belt from the engine must be turning the hydro transmission so my guess is that the belt is incorrectly routed and is very slack.
John

 

[lostinthelight]

Interesting, this one.....irrespective of the position of the drive lever, the belt from the engine must be turning the hydro transmission
John

Unless the parking brake is on or its rod connected as it forms the drive belt tensioning mechanism.
I am basing most of my replies based on my knowledge of countax/westwood which seem to bear some similarities to Hayter but not sure by how much?
Op, could you confirm:
There are two pulleys above the electric blade drive clutch, the top one has a belt to an idler to drive the power take off?
The lower one runs to the pulley on top of the hydro axle which has a fan attached, the belt is slack when parking brake on and tightened when parking brake is released?

 

[Hobsini]

Ok, I’ll take another look. However, I’ve assumed that when the engine is running and the brake is off the pulley with belt shown in the pics should be running and driving that belt. Is that correct?

 

[Hobsini]

That’s the top pulley in the 2nd pic. This has a belt that runs to the back of the mower. The bigger pulley (below) runs to the cutting deck. What I think is the clutch is between the two and this has two wires connected. These are part of what I repaired so wondering whether these might be part of the problem.

 

[lostinthelight]

Ok, I’ll take another look. However, I’ve assumed that when the engine is running and the brake is off the pulley with belt shown in the pics should be running and driving that belt. Is that correct?

Yes provided the jocky wheels are tensioning it enough, if the belt is too long it wont

 

[Hobsini]

Ok, now sorted - it was the wrong belt. Finally got confirmation of the part number for the correct belt, ordered and fitted. Now runs and drives ok. Unfortunately, the bar I had to bend out of the way to remove/fit the belt (as mentioned in earlier posts) snapped off this time but I assume this is not a major problem?

Thanks very much for all the help. Great to have it running again - finally.

Only remaining issue now is that the steering is really stiff. It’s some considerable time since I last had this running and it’s been outside in all weathers while not running. It’s also been tipped on its side at times while I’ve tried to get it up and running again. Any suggestions for what might be contributing to the steering issue and will any of the above have caused the problem?

 

[lostinthelight]

First thing is to check the tyre pressure, it can make it stiff if low,


If above ok, look king pin bearings, Jack front off the ground and move steering wheel, if stiff disconnect the steering rod, if stiff disconect tie rod to eliminate which side.
There is a bearing at the bottom of the steering wheel shaft below the pinion and quadrant rack that has a gease nipple