Thread: Nasty Knock

Ac compressor ?
Or the belt tensioner ?

Crank harmonic balancer. The centre is still tight on the tank, but the outer pulls has broken away from the centre.

and


if the harmonic balancer breaks it will look like the 2 halves I had

Originally Posted by rangieman

Ac compressor ?
Or the belt tensioner ?

thanks rangieman...

it seems fairly easy to move the belt back and forth with a quite solid knock at each end as you can probably hear from the video. I have attempted to do this in the past and I think that its been fairly hard to move the belt due to cylinder compression. I might be wrong though. It could just be that due to my concern for a possible major fault that I have considerably more adrenalin running Still, its hard to see why I would have such a major fault occur at the same time as the trans cooler hose goes. I use the TD5 for towing a 21ft caravan on a full time basis, but I drive pretty carefully and with a light right foot as well as manually downchanging the auto before getting under too much load. That is, even though I'm towing quite a load I don't 'push' to vehicle and drive mostly with one eye on the EGT display.

Originally Posted by johnb44

and


if the harmonic balancer breaks it will look like the 2 halves I had

thanks kelvo and johnb44,
I think I'll have to start dropping a few things off tomorrow and see if this could be the problem... hopefully not!!

Originally Posted by johnb44

and


if the harmonic balancer breaks it will look like the 2 halves I had

Have not done a harmonic balancer before.
If it is broken as in your picture, how do you get it off the shaft?
Also, would I need to remove the radiator, etc to do the job?
Being on the road full time I can't carry all the tools to do every job... but I do have a fair range still

Use the starter motor and bar to get it off , you'll need to protect the radiator , better to remove and clean that and intercooler while its out .
You'll need a torque wrench capable of nearly 500 nm or an alternative method.

Originally Posted by discorevy

Use the starter motor and bar to get it off , you'll need to protect the radiator , better to remove and clean that and intercooler while its out .
You'll need a torque wrench capable of nearly 500 nm or an alternative method.

thanks discorevy,

replaced the radiator and cleaned everything out a couple of months back.
I have a piece of plywood that I slide in front of the radiator face to protect it normally. I'd prefer to leave radiator in place if possible as I have had a leaking bleed valve surround on top of the top radiator hose where I currently have a 'engine save' sensor fitted. It's not leaking at this time and I would like to keep it that way if at all possible.
Is the balancer a press fit that needs to be 'pulled' off (so to speak ) or will it just slide off once the main bolt is removed?
Putting it back on might be a case of doing up as tight as possible and then taking to a local repair shop to have them torque it properly.