Clutch Problems

Submitted: Monday, Aug 28, 2006 at 08:21
ThreadID: 37181 Views:1925 Replies:5 FollowUps:8
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Does anyone know what might be causing the following symptoms: Driving on the beach nice and slow in third gear in very thick loose sand 4H and then all of a sudden it's like I don't have a clutch anymore. When I go to drop down a gear it doesn't want to engage and it's almost as if the clutch cable has snapped the pedal is very loose and it does not want to engage in any gear. If you leave it for 30-40 seconds it works fine again? Could there be a problem with the hydraulics losing pressure?
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Reply By: Barnray - Monday, Aug 28, 2006 at 08:31

Monday, Aug 28, 2006 at 08:31
Sounds like the master cylinder is R/S main seal is bypassing. Barnray
AnswerID: 191382

Follow Up By: Member - Troll 81 (QLD) - Monday, Aug 28, 2006 at 08:38

Monday, Aug 28, 2006 at 08:38
is that expensive to get fixed?
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FollowupID: 449146

Reply By: Barnray - Monday, Aug 28, 2006 at 13:01

Monday, Aug 28, 2006 at 13:01
Will probably depend on your Mechanic and whether he uses a Kit or replaces the cylinder and what badge you have on the front of the car. B
AnswerID: 191441

Reply By: Member - Tim - Monday, Aug 28, 2006 at 13:14

Monday, Aug 28, 2006 at 13:14
Hi Troll,

Usually the hydraulics will lose pressure when they are under pressure. They are only actually under pressure when you put your foot on the clutch pedal. That means that it shouldn't get better as such. If you put your foot on the pedal and it works and then if you keep your foot down and it slowly lets the clutch out without you moving your foot then it will be the hydraulics. It's not really that hard to fix yourself as you can buy kits for the master and slave cylinders fairly cheaply and put them in. I actually found that I could buy a whole replacement cylinder with the kit in it for not much more than the kit last time I got one for an old Mazda. You have to make sure you bleed things out pretty well though.

If what I described above aren't the symptoms then you could be up for a new clutch, the springs in the clutch plate or pressure plate may have given up or the clutch plate itself may have worn out.

Hope that helps :).

Tim.
AnswerID: 191442

Follow Up By: Member - Troll 81 (QLD) - Monday, Aug 28, 2006 at 14:44

Monday, Aug 28, 2006 at 14:44
Tim I thought it was the clutch as well but it's not slipping or anything like that it's only under heavy load and hard work.

I might take it down to the shop soon and hear what they say...thanks for the input so far though
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FollowupID: 449215

Reply By: howesy - Monday, Aug 28, 2006 at 19:42

Monday, Aug 28, 2006 at 19:42
Drain all the fluid and replace it, your clutch will run hotter in the sand, it is under extreme load when changing gears and gives more slip while taking up causing more heat and with Dud fluid your clutch will disappear. Try to ease it into gear changes and apply the gas when your sure its 100% solid.Not a definate but is a possibilty and clutch hydraulics are usually neglected items anyway so it wont hurt
AnswerID: 191517

Reply By: bob&loz - Monday, Aug 28, 2006 at 21:50

Monday, Aug 28, 2006 at 21:50
Troll
"nice and slow in third gear in very thick loose sand 4H"
Why would you want to be in 4H in those conditions
Bob
AnswerID: 191550

Follow Up By: Member - Pezza (QLD) - Tuesday, Aug 29, 2006 at 00:52

Tuesday, Aug 29, 2006 at 00:52
Maybe because 4 low applies too much torque for those conditions and you will bury yourself to the eyeballs before you know it.
It's a 4.5 petrol not a 2.4 diesel hilux.

Avagoodn
Pezza
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FollowupID: 449376

Follow Up By: Member - Troll 81 (QLD) - Tuesday, Aug 29, 2006 at 10:44

Tuesday, Aug 29, 2006 at 10:44
Yes you are spot on Pezza
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FollowupID: 449428

Follow Up By: bob&loz - Tuesday, Aug 29, 2006 at 17:50

Tuesday, Aug 29, 2006 at 17:50
Ok guys, sorry
each to there own but personally I would rather use the right foot to control power and halve the torque going through the gearbox
Bob
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FollowupID: 449507

Follow Up By: Member - Pezza (QLD) - Tuesday, Aug 29, 2006 at 19:27

Tuesday, Aug 29, 2006 at 19:27
No need to be sorry Bob, was a reasonable question and you were entitled to ask it, no such thing as a 'stupid' question.
As for "halving the torque going through the gearbox" the torque multiplication actually happens after the gearbox, motor - gearbox - transfer case - diff - wheels.

Avagoodn
Pezza
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FollowupID: 449521

Follow Up By: bob&loz - Tuesday, Aug 29, 2006 at 21:54

Tuesday, Aug 29, 2006 at 21:54
Pezza
We are starting to hijack this thread (maybe we should start new one on pro's & con's of hi/low & 2wd v 4wd in what situations, as I find the various technique's and theories behind them quite interesting) but actually the REDUCTION in torque that I am talking about is in the gearbox, (from the first driven gear in the g/b to the output shaft gear of the transfer box)
Bob
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FollowupID: 449558

Follow Up By: Member - Andrew W (SA) - Tuesday, Aug 29, 2006 at 22:05

Tuesday, Aug 29, 2006 at 22:05
I'd like to see that thread ... I know what works intuitively from lots of experience and the School of Hard Knocks and rarely get bogged, but would like to see a little discussion about the theory. I'll look out for said thread.
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FollowupID: 449563

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