I've t&ken lately for a (short) test drive a 360 GLS 1983 B19 A engine M47 gearbox.
milleage 60 000 miles.
The car is in mint condition, and although I'm dealing with a Frenchman (quite a common practise in France) , I have no reason to suspect any fiddling with the odometer .
My main concern about this car comes with a quite strong vibration from the main shaft or gear box ? I lack of experience to tell exactly.
On a slope going downhill with no gear engaged this vibration deasappears.
I gathered from a friend with somme knowledge of the 300's that the main shaft is factory balanced, and that one should mark the position of the shaft where it connects to the clutch to make sure that if removed the shaft can be reassembled at its exact initial position.
From the same source there would be 28 parallel grooves (stria ?) on this shaft assy...Am I Left with, at the worse, 27 différent mountings possibilities to try in order to find the original factory balanced assembly ?
Any trick to suggest ?
Any help would be greately appreciated
main shaft out of balance ?
-
petefarrell360
- *** V3M DONOR ***
- Posts: 3083
- Joined: 11 Oct 2004 07:12 pm
- Location: Bucks, UK
I'm no expert, and it's an earlier car than I'm used to, but I'd guess the gearbox mount could be worn or loose, which may cause sometime similar? If not, then yes, the torque tube is on splines, as to home many I can't remember, but 28 close, if not a couple too many. If the shaft is balanced, then I'd guess in theory it should work any way round, putting things back where they came from is always a good idea, as if it worked, don't add another variable, however if the torque tube is balanced seperately, it shouldn't be that bad IMO. Maybe it has lost the balance weight. Try jacking the rear of the car up, putting it on axle stands, very securely, block the front wheels and very carefully and slowly running the car in gear. See if the vibrations are still there and with an assistant see if you can spot the part that's vibrating! (Take care........ carried out at users own risk blah blah.........)
At a long shot it could be a wheel bearing in very bad condtion, as under load it would give a different stress to rolling downhill not under load maybe? But I doubt it tbh. Even a half shaft might cause some problems, once again under load. Is it always with the power on?
Hope that helps. WIthout actually seeng the car and experiencing the problem first hand, it's hard to tell sometimes. Someone with more knowledge than me will be along shortly!
Pete
At a long shot it could be a wheel bearing in very bad condtion, as under load it would give a different stress to rolling downhill not under load maybe? But I doubt it tbh. Even a half shaft might cause some problems, once again under load. Is it always with the power on?
Hope that helps. WIthout actually seeng the car and experiencing the problem first hand, it's hard to tell sometimes. Someone with more knowledge than me will be along shortly!
Pete
G reg 360 GLT, G reg 340 GL Variomatic, plus many more..........
Cheers Pete !petefarrell360 wrote:I'm no expert,
You're certainely more expert than I
and it's an earlier car than I'm used to, but I'd guess the gearbox mount could be worn or loose, which may cause sometime similar?
Could well be...... make sense any way, but if then, it could have been easily fixed by the seller, You see me quite puzzled there
If not, then yes, the torque tube is on splines, as to home many I can't remember, but 28 close, if not a couple too many. If the shaft is balanced, then I'd guess in theory it should work any way round, putting things back where they came from is always a good idea, as if it worked, don't add another variable,
Indeed !
however if the torque tube is balanced seperately,
So I was told, if Igot it right (not too sure about that)
it shouldn't be that bad IMO. Maybe it has lost the balance weight. Try jacking the rear of the car up, putting it on axle stands, very securely, block the front wheels and very carefully and slowly running the car in gear. See if the vibrations are still there and with an assistant see if you can spot the part that's vibrating! (Take care........ carried out at users own risk blah blah.........)
Not too sure the 78 years old gentleman selling the car is going to like that
At a long shot it could be a wheel bearing in very bad condtion, as under load it would give a different stress to rolling downhill not under load maybe? But I doubt it tbh. Even a half shaft might cause some problems, once again under load. Is it always with the power on?
Yes it occurs only under load .........
Hope that helps. WIthout actually seeng the car and experiencing the problem first hand, it's hard to tell sometimes.
Yep ! unless when one faces a well known and documented fault, quite an hazardous exercice
Someone with more knowledge than me will be along shortly!
Looking forward to meeting him
Pete
Hakan
does sound as though something's out of line or something.
Does the car wobble if you rev it up in neutral? ie: don't drive it anywhere, just leave it in neutral gear, and leave the clutch pedal up....if it wobbles then its possibly one of the bearings which support the propshaft in the torque tube worn.
The assembly is balanced at the factory but there is no need to mark the way it comes off and on, it can go anyway it likes.
Does the car wobble if you rev it up in neutral? ie: don't drive it anywhere, just leave it in neutral gear, and leave the clutch pedal up....if it wobbles then its possibly one of the bearings which support the propshaft in the torque tube worn.
The assembly is balanced at the factory but there is no need to mark the way it comes off and on, it can go anyway it likes.
340s and 360s are quite different in that department MJ although 360s can also whirr at idle.
Pete could also be right and it could be the mountings being worn in the gearbox, although I would have thought you would notice the gear stick moving up and down or around when you accelerate and lift off, cos its joined onto the torque tube.
although 360s can also whirr at idle.Pete could also be right and it could be the mountings being worn in the gearbox, although I would have thought you would notice the gear stick moving up and down or around when you accelerate and lift off, cos its joined onto the torque tube.
Well Gentlemen, whith your much appreciated assitance, it looks like, if not sold, that 363 is going to be mine in a close future.........pettaw wrote:does sound as though something's out of line or something.
More likely dismantled and refitted out of line...No service history is available from the current owner (only the second one, as first owner kept the car for 22 years and current owner 2 years)
My guess is that this car over the past two years has been serviced everywhere apart from Volvo's
eg : speedy, Midas.......... Fred Merck and Jack of all trade, not to mention "Oily Rag".
That car must thave been mechanically perfectly sound 2 years ago, but now I fear the worse......
Does the car wobble if you rev it up in neutral?
No It doesn't.
ie: don't drive it anywhere, just leave it in neutral gear, and leave the clutch pedal up....if it wobbles then its possibly one of the bearings which support the propshaft in the torque tube worn.
The assembly is balanced at the factory but there is no need to mark the way it comes off and on, it can go anyway it likes.
Thank you VERY Much for this piece of news....... I was scared that one and only one fitting could be acceptable for the entire propulsion line from clutch to gear box......
-
petefarrell360
- *** V3M DONOR ***
- Posts: 3083
- Joined: 11 Oct 2004 07:12 pm
- Location: Bucks, UK
