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PV, 120 (Amazon), 1800 General Forum for the Volvo PV, 120 and 1800 cars |
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Oil for M41 gearbox and differentialViews : 2152 Replies : 12Users Viewing This Thread : |
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Dec 3rd, 2017, 15:40 | #11 |
VOC member
Last Online: Yesterday 17:12
Join Date: Jan 2008
Location: Sheffield
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o/drive
I have dismantled d type overdrives, though not necessarily assembled them again!! It is my opinion that the control valve returns surplus oil to the sump, the sump being the external casing. The bearings are within the same casing which require lubrication.
Canley classics suggest never using gear oils as these oils contaminate the clutch. They also add to watch for black particles in any drained oil or filter. The black particles are from the clutch.Surely if the clutch is dry and operates in a dry oil free compartment, the fibres from a dry clutch would not end up in the oil or filter. Again this is purely my opinion. |
Dec 3rd, 2017, 23:15 | #12 |
Too many cats
Last Online: Aug 24th, 2023 09:02
Join Date: Aug 2011
Location: Birmingham
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Eh?
The whole thing is full of oil up to the level plug. The cone clutches run covered in oil hence why Molyslip-type additives will mess up overdrive operation.
Attached photo shows that the clutches are in the same chamber as everything else. Material used on the friction surfaces is not the same as used for dry clutches, it's more like that used in automatic gearboxes and limited slip differentials.
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Mark |
Dec 5th, 2017, 16:32 | #13 |
Member
Last Online: Mar 23rd, 2024 10:43
Join Date: Jan 2008
Location: East Sussex
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Thanks for all your interesting posts, I know a lot more about OD gearboxes.
I guess I got it wrong, my gearbox is an M40 without OD. Can anyone advise on my original question, i.e. what oil to get? Any advice/recommendations on good brands for oil for gearbox and diff? |
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