Thread: The ultimate solution to Td5 vibration / knocking

replaced rear axle whole asembly on the week end
vibration still there when the truck is warm it is more Pronounce
i had a bukkled rim, borrowed spare set from father inlaw vibration still there
feel like selling starting to cheese me off
still vibrates at 2000 rpm about 90 ish
found on one forum about upgrading torque converter to modified v8 disco converter still dont know if it is torque converter related
any thoughts would be good as this is a bad and anying vib
when warm i can now make it vibrate on a flat road

Storm,

Having replacing my T/C with Ashcrofts uprated version, which by all means I advocate doing, can confirm some of the vibrations as well as the dreaded auto drone are still there.

Take a look at the attached Driveline Vibration Troubleshooting guidelines for the D2. It is a NAS LR Tech Bulletin (dated 03/07/03) but can't see why it shouldn't apply to the rest of us.

Cheers
Matt

The ROW version of this tech bulletin is post here

The NAS is formatted differently and some steps are broken down further - a paragraph in the ROW procedure could be 3-4 steps in the NAS version - but the procedures appear to be the same.

There are some differences in the replacement parts information for ROW.

cheers
Paul

Have you tried dropping your front prop shaft out and going for a drive?
Have you tried dropping your rear prop shaft out and going for a drive?

When i had my TD5 i used to look at that sucker when it was idling and think how rough running they were, i dont think it is possible to smooth them out when you think about it a 5 cylinder diesel has got to be harmonically quiet disturbed.Lets face it they are a very nice tractor engine.
And i mean that in a nice way.

Paul,

Thank for the heads up. For some reason that particular TSB doesn't show up in my ROW RAVE.

Cheers
Matt

hi i was diving the discovery the other day got the disco to shudder/ vibrate at 80-90 when the auto dropped into what i call toque converter lockup

and contiued to smooth out, when i pushed it, it was smooth for a short while and then the shudder/ vibrate came back harshly is this auto clutch slipped

yes i have dropped booth front and rear shafts, drop back shaft vibration gone but with only the front shaft driving it, didn't seem to allow the auto to lock up

any help would be good

cheers
jared

Originally Posted by Storm

hi i was diving the discovery the other day got the disco to shudder/ vibrate at 80-90 when the auto dropped into what i call toque converter lockup

and contiued to smooth out, when i pushed it, it was smooth for a short while and then the shudder/ vibrate came back harshly is this auto clutch slipped

yes i have dropped booth front and rear shafts, drop back shaft vibration gone but with only the front shaft driving it, didn't seem to allow the auto to lock up

any help would be good

cheers
jared

Hows the output bearing on your transfer case?
Get your rear prop shaft straightened and balanced renew unis and cardan joint.
If you still have a problem after this move onto torque converter?
Start with the cheap stuff i think.
When i was a lad we used to dynamic balance and straighten tail/prop shafts some of them can be pretty bad.
Make sure the unis are replaced if the balancer doesnt say this will be done as a matter of fact go somewhere else.

so ive been following and posting in the ultimate td5 vibration thread till now and found this one and read through it.

got me inspired to have another look at mine.

when i bought it, there was a 2-2.2k rattle that turned out to be the handbrake shoes and this was assembly was replaced fixing this. but after time come to realise there was still a rumble/vibration at the same rpm range.

sounds a bit like the exhaust (but its not) and more noticeable from drivers side.


So took rear shaft off again and went for drive and the noise it gone. Happy just to hear what its like without the noise, and that it is actually ment to be quieter and its not just me.