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PV, 120 (Amazon), 1800 General Forum for the Volvo PV, 120 and 1800 cars |
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J Type OverdriveViews : 1805 Replies : 4Users Viewing This Thread : |
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Feb 19th, 2005, 17:12 | #1 |
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J Type Overdrive
Hello All
Stupid Question. Was given an M41 gearbox with attached J type and told it was working OK. I have connected these up to my B20 and I am ready to drop the engine back in the car.Turning the crank over-the rocker gear,valves etc do what they should. If I slip it into gear I can feel the resistance so assume the gearbox is working OK. But the flange on the overdrive remains static. Does the overdrive have to be wired up and solenoid engaged to enable the flange to rotate? Don't want to have to fix any problems under the car. Many Thanks Brian |
Feb 20th, 2005, 10:04 | #2 |
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Last Online: May 2nd, 2024 19:17
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Location: Peterborough
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RE: J Type Overdrive
The short answer is no. If you put the gearbox in any gear and turn over the engine the output flange should turn with it, albeit at correspondingly different rates. The overdrive should have nothing to do with this operation as, when it is not operational as in your scenario, the output shaft should go straight through it to the output flange. If you are certain its in gear and it doesn't turn with the engine something is wrong but it may not be the overdrive, because even when the overdrive stops working you should be able to get the first four gears, otherwise every time one packs in - and they do go wrong - the car would grind to a halt and I've never known that to happen, you just have to live with only four gears till you get it fixed, unless someone can enlighten us both.
Mike Gilbert. |
Feb 20th, 2005, 10:04 | #3 |
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Last Online: May 2nd, 2024 19:17
Join Date: Dec 2003
Location: Peterborough
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RE: J Type Overdrive
The short answer is no. If you put the gearbox in any gear and turn over the engine the output flange should turn with it, albeit at correspondingly different rates. The overdrive should have nothing to do with this operation as, when it is not operational as in your scenario, the output shaft should go straight through it to the output flange. If you are certain its in gear and it doesn't turn with the engine something is wrong but it may not be the overdrive, because even when the overdrive stops working you should be able to get the first four gears, otherwise every time one packs in - and they do go wrong - the car would grind to a halt and I've never known that to happen, you just have to live with only four gears till you get it fixed, unless someone can enlighten us both.
Mike Gilbert. |
Feb 20th, 2005, 10:49 | #4 |
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RE: J Type Overdrive
Mike
Many thanks for the reply. There was a phrase you used 'if you are certain its in gear' that made me think - mmm. Now you've got to understand the car has been off the road having a total rebuild for over a year so I had forgotten just how flappy the flappy gearstick is! So anyway you were correct it wasn't in gear (red faces all round) and now the output flange turns in all gears. So now I am a very happy fella - yabba dabba doo. Brian |
Feb 21st, 2005, 19:45 | #5 |
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Last Online: May 2nd, 2024 19:17
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RE: J Type Overdrive
Im pleased about that, if only 'cos you had me scratching my head for another possible cause. I had visions of you being sold a gear box with half the internals missing.
Mike. |
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