Compressor belt on an OM366

[Volvomad]

Can you increase belt tension a little ?
Is there room to put flat pulley under the flapping side , even to get a longer belt to fit the pulley in ?
It is very tough work for 1 belt

 

[AusDave]

Can you change the pulley on the compressor to a heavier one or add a steel disk to it to give more of a flywheel effect in an effort to even out the compressor pulses?

 

[Frankhaddad]

Can you increase belt tension a little ?
Is there room to put flat pulley under the flapping side , even to get a longer belt to fit the pulley in ?
It is very tough work for 1 belt

The belt is a little to tight as it is, I may have room for an extra pulley, I will have to take another look at the room, very tight quarters.

 

[Frankhaddad]

Can you change the pulley on the compressor to a heavier one or add a steel disk to it to give more of a flywheel effect in an effort to even out the compressor pulses?

That is a much easier possibility, might be worth a try even if I have to have one made. I was wondering if there was a way to reduce the compression stroke of the compressor? (construction equipment experience, compressor not much) I see where you are going with pulley/flywheel effect. I did put the old pulley on the new compressor got the same results.

 

[hosspuller]

Can you change the pulley on the compressor to a heavier one or add a steel disk to it to give more of a flywheel effect in an effort to even out the compressor pulses?

You might consider a harmonic balancer instead of a simple flywheel. It would be working in reverse of usual installation on an engine. Which brings up another thought. Is the harmonic balancer on the engine doing its job?

 

[Volvomad]

I dont know anything of the science of belt tension but as I work only on the same kit over and over, i find the best tension varies hugely from 1 application to the next . If it was my machine assuming it has a good quality compressor , i would keep squeezing the belt bit by bit until it steadied or split . That is just me and I could be slated for suggesting this .

 

[Tinkerer]

I would be looking at the harmonic dampener on the engine. The rubber part of it may be failing. I had one that had actually allowed the pulleys and the steel weight to rotate out of alignment with the correct crankshaft position. I figured it out because the 0° timing mark was off when #1 piston was top dead center.
I even put new timing gears in the engine before figuring it out.