[Archived]

I believe this is going to be a situation where Prevost cannot help with replacement cylinders or parts. You might end up having to disassemble the cylinder to identify the internal seals that are leaking and see if you can find them.

Only coaches with OTR used them so they are likely common to seated coaches with 2 stroke engines only if you can find a charter company that hasn’t thrown out its inventory of old parts.

[Roy]

Thanks,, headed down this morning 120 miles to check on progress.

[Philip]

Non-OTR coaches had a jack screw type belt tensioner and maybe someone on here can take photos of theirs (Full Time Bill?) so you can replace the pneumatic cylinders with a home made version.

I replaced my mini-air bag tensioners with a home made jack screw type of tensioning and it has worked very well for more than 30,000 miles and saved me from chasing leaks in the fittings, valve, regulator, check valve and air bags.

[Dick]

Thanks Jon. Maybe somebody will post a pic of device.

[Dick]

Two years ago, Prevost had everything except one of the seals. My hydraulic shop had that one in stock.

[Dick]

Long shot for parts … Nationwide Traveler in Appleton, WI. Longtime seated coach operator that does their own maintenance. Tom Marks is partner who handles maintenance and Brian is the mechanic. (920) 734-5620

[Bill]

The screw type tensioner on my coach is on the engine fan belt only, unrelated to A/C or 2 alternators. Each of those have their own belts and tension adjustments.

[glen]

The screw type tensioner on my coach is on the engine fan belt only, unrelated to A/C or 2 alternators. Each of those have their own belts and tension adjustments.

[Roger]

But the principle is the same for the OTR compressor so what does your fan belt tensioner look like?