When the clutch goes.
Submitted: Sunday, Jun 19, 2005 at 15:10
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Footloose
You are 200K from the nearest town. You came away with a slightly sus clutch but thought it would go "a bit longer". The clutch slips, starts smoking in sand and suddenly you can increase revs but the vehicle just slows down. New clutch needed.
What to do ? Is it possible to jury rig something ? I've been told you can drive without one...I can't ...or can I ?
Reply By: woddonnee - Monday, Jun 20, 2005 at 08:46
Monday, Jun 20, 2005 at 08:46
G'day all
I can't add much to the above, but just wanted to clarify the 2 basic scenarios.
1. If the clutch pedal operates the clutch ok but the clutch is no longer gripping, then the crash selection system won't make any difference.
2. If its the clutch pedal operation thats failed and the clutch friction is ok the crash style selection process is the go.
Hopefully that helps. I used to train drivers in the upgrade to heavy rigid licence, I used a 22 tonne crash gearbox vehicle. I was able to get all trainees to drive "clutchless" once they mastered the crash gearbox (2 day course, 3 trainees)
My father (RIP) taught me from my learner days double de-clutching (properly not the pretend version that most do) and clutchless driving. At one point in my truck driving days I only used the clutch pedal to start off.
cheers
Rod
AnswerID:
116489
Follow Up By: woddonnee - Monday, Jun 20, 2005 at 08:53
Monday, Jun 20, 2005 at 08:53
G'day again
I just fondly recalled a surfing trip when I was 16, 3 of us went to the foot of
yorke peninsula (around 300k's from
adelaide) in a friends EH holden 3 on the tree, the clutch pedal system failed on our arrival. I ended up driving around for the 3 days to all the surf spots and back to
adelaide. Thanks dad
Geez, I once bought a an FC Holden wagon with no brakes and no clutch pedal operation and drove it
home.
Young and foolish :-)
cheers
Rod
PS sorry for dribbling on
FollowupID:
371984
Reply By: fourstall2000 - Monday, Jun 20, 2005 at 08:56
Monday, Jun 20, 2005 at 08:56
I think somebody is kidding you.
The spigot bearing does not drive the gearbox as stated.(it is only a shaft support)
The only drive is via the clutch plate,this friction drive is provided by the spring pressure of the pressure plate.
When your clutch linings wear out , the friction pressure of
the springs are greatly reduced due to the loss of thickness of the linings.
This allows the clutch to slip.
Some times when the clutch is overloaded the linings overheat and cause slip,often this will improve when the linings cool down, and with clutch use the glaze is removed,however if the linings are already worn burning the linings will often be the last straw.
However in most circumstances some linings remain ,enough to limp
home if you use lower gears to reduce clutch loading.
Regards
AnswerID:
116493
Follow Up By: Member - Collyn R (WA) - Monday, Jun 20, 2005 at 12:30
Monday, Jun 20, 2005 at 12:30
Willem
Am I reading your post incorrectly? If there's no clutch plate left because it's burned or worn out there's no friction and hence no drive.
Your explanation is only valid where there's friction but no clutch movement. Then, you start by engaging first gear, engage the starter and drive away. It IS possible to change gears but it helps a lot if you've grown up driving vintage cars or trucks with non-synchro boxes.
Technique is to ease the accelerator and simultaneously move into second etc. It's also possible to change down but this needs a heap of practice. You ease the accelerator, slip into neutral, take foot off clutch, increase engine revs and simultaneously slip into the next lower gear. Get this right and it slides in like a hot knife in butter. Get it wrong ....
I do this routinely in the OKA (but grew up with a 1927 Bentley so am very used to it).
Collyn Rivers
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Follow Up By: Member - Jeff M (WA) - Monday, Jun 20, 2005 at 14:26
Monday, Jun 20, 2005 at 14:26
The other main clutch failure that I've seen is the Thrust bearing, which can bleep ter crap all over the inside of the clutch and makes some really cool noises,
well their cool when it's somebody else car anyway! ;-)
FollowupID:
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Follow Up By: BenSpoon - Monday, Jun 20, 2005 at 14:54
Monday, Jun 20, 2005 at 14:54
Cool noises... like someone skinning a bloody loudly screaming cat under your bonnet.
aah the looks from pedestrians when driving through the city...
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