'88 740 clutch/gearbox noise

Dec 1st, 2003, 00:39

getting a sreaming/grating noise when sitting with clutch depressed. also briefly apparent when meshing into 1st & 2nd.took to local garage who changed release bearing -still no better. he said he'd contacted someone who said it was a centre bearing in the gearbox and was a known problem. I've sourced a second hand 'box but before I put it in has anyone any views to the contrary or further advice.( box I just took out has about 1mm side to side play on input shaft - is this acceptable or indicative of my problem?) cheers.

Dec 1st, 2003, 08:37

I'd be more suspect of the thrust bearing as it could do that too.

Regards
Dave M

BillB · Dec 1st, 2003, 13:22

I've often been getting a slight screech, for some time, when letting out the clutch. I would also attribute this to the thrust bearing. In my case, it's not loud enough to go to the hassle of removing the g/box (I'll wait till the clutch starts slipping for that).

Dec 1st, 2003, 22:49

Thanks for reply Dave - do you mean gearbox or engine thrust bearing?
Pete

Dec 2nd, 2003, 17:48

found problem! spigot bearing behind flywheel - not many balls and all chewed up.

Dec 7th, 2003, 13:07

I have the same screech, I am 99% sure that it is the thrust bearing. It may be caused by low grease/overheating

Take Care

1989 740se (7 Seater)

Dec 1st, 2003, 00:39	#1
petehall Guest Location:	'88 740 clutch/gearbox noise getting a sreaming/grating noise when sitting with clutch depressed. also briefly apparent when meshing into 1st & 2nd.took to local garage who changed release bearing -still no better. he said he'd contacted someone who said it was a centre bearing in the gearbox and was a known problem. I've sourced a second hand 'box but before I put it in has anyone any views to the contrary or further advice.( box I just took out has about 1mm side to side play on input shaft - is this acceptable or indicative of my problem?) cheers.

Dec 1st, 2003, 08:37	#2
Dave M Guest Location:	RE: '88 740 clutch/gearbox noise I'd be more suspect of the thrust bearing as it could do that too. Regards Dave M

Dec 1st, 2003, 13:22	#3
BillB VOC Member Last Online: Apr 24th, 2024 13:58 Join Date: Dec 2002 Location: Bristol	RE: '88 740 clutch/gearbox noise I've often been getting a slight screech, for some time, when letting out the clutch. I would also attribute this to the thrust bearing. In my case, it's not loud enough to go to the hassle of removing the g/box (I'll wait till the clutch starts slipping for that). __________________ 05 V70 P2 2.4 with RICA 13 C30 2.0 R Design lux (part exchanged) 16 V40 D2 R design Nav

Dec 1st, 2003, 22:49	#4
petehall Guest Location:	RE: '88 740 clutch/gearbox noise Thanks for reply Dave - do you mean gearbox or engine thrust bearing? Pete

Dec 2nd, 2003, 17:48	#5
petehall Guest Location:	RE: '88 740 clutch/gearbox noise found problem! spigot bearing behind flywheel - not many balls and all chewed up.

Dec 7th, 2003, 13:07	#6
Paul McCormick Guest Location:	RE: '88 740 clutch/gearbox noise I have the same screech, I am 99% sure that it is the thrust bearing. It may be caused by low grease/overheating Take Care 1989 740se (7 Seater)

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