Anyone Replaced Rear Brake Back Plate?

Ian21401 · Oct 18th, 2017, 22:23

Volvo 940 estate, 1992, 2.0L petrol non turbo. 210,000 miles.
Rear brakes are ATE. The "back plates" or "protection plate" to use Volvo's term are badly corroded and disintegrating. I've obtained genuine replacements (part no. VO1330432) from my dealer. (I'm advised that they are not handed left or right ) Now I have to fit them. I've been unable to find any information to help with this. It appears that the rear axle half shaft will have to be removed to achieve this which would appear to require the removal of the half shaft retaining plate then withdraw the half shaft. In the past I've withdrawn half shafts relatively easily from my Morris Marina when the bearings needed replacing, (which was quite frequently due to towing a caravan.) There is no oil leak from the oil seals at present. Will I be able to do this without disturbing/damaging the oil seal or is it highly likely that the oil seal will be damaged and need replacing and are there any other issues which I need to be aware of and/or prepared for ?
Plus, 1) Any particular grease required on the seal and bearing and 2) Haynes advise applying a sealant between the axle tube and half shaft retaining plate. Is there a particular sealant required ?

rogerthechorister · Oct 24th, 2017, 20:10

Would it be possible to cut them in half and put an extra bit in the middle before bolting back in? I seem to remember doing something similar on the front of a Morris Minor decades ago when adding Riley 1.5 front brakes.

Ian21401 · Oct 25th, 2017, 21:24

Thanks Roger. I'd thought about that but would prefer not to unless it's absolutely essential. As it passed it's MOT last week with no advisories and I managed to remove, check and re grease the pads I'll be leaving it until next spring anyway.

Oct 18th, 2017, 22:23	#1
Ian21401 Premier Member Last Online: Feb 11th, 2023 20:32 Join Date: May 2010 Location: Blyth, Northumberland	Anyone Replaced Rear Brake Back Plate? Volvo 940 estate, 1992, 2.0L petrol non turbo. 210,000 miles. Rear brakes are ATE. The "back plates" or "protection plate" to use Volvo's term are badly corroded and disintegrating. I've obtained genuine replacements (part no. VO1330432) from my dealer. (I'm advised that they are not handed left or right ) Now I have to fit them. I've been unable to find any information to help with this. It appears that the rear axle half shaft will have to be removed to achieve this which would appear to require the removal of the half shaft retaining plate then withdraw the half shaft. In the past I've withdrawn half shafts relatively easily from my Morris Marina when the bearings needed replacing, (which was quite frequently due to towing a caravan.) There is no oil leak from the oil seals at present. Will I be able to do this without disturbing/damaging the oil seal or is it highly likely that the oil seal will be damaged and need replacing and are there any other issues which I need to be aware of and/or prepared for ? Plus, 1) Any particular grease required on the seal and bearing and 2) Haynes advise applying a sealant between the axle tube and half shaft retaining plate. Is there a particular sealant required ? Last edited by Ian21401; Oct 18th, 2017 at 22:28. Reason: Add text.

Oct 24th, 2017, 20:10	#2
rogerthechorister Rogerthechorister Last Online: Dec 16th, 2023 02:15 Join Date: May 2006 Location: Rochester	Cut them in half? Would it be possible to cut them in half and put an extra bit in the middle before bolting back in? I seem to remember doing something similar on the front of a Morris Minor decades ago when adding Riley 1.5 front brakes. __________________ B234F estate, H reg 100k miles. RIP melted B280E. 760T estate, F reg 133k miles. 940 Sport M90 estate, N reg 170k miles. 940 Sport M90 estate, N reg 100k miles, ex Lovejoy. 960 Estate, N reg, 56k miles, blown up and sold.

Oct 25th, 2017, 21:24	#3
Ian21401 Premier Member Last Online: Feb 11th, 2023 20:32 Join Date: May 2010 Location: Blyth, Northumberland	Thanks Roger. I'd thought about that but would prefer not to unless it's absolutely essential. As it passed it's MOT last week with no advisories and I managed to remove, check and re grease the pads I'll be leaving it until next spring anyway.

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