Mechanics

NO PRESSURE ON CLUTCH

2001 Mazda b3000

Drive Train Axles Bearings problem
2001 Mazda b3000 6 cyl Four Wheel Drive Manual 90000 miles

I have a 2001 Mazda B3000 truck with 92K miles on it. The truck is a standard with 5speed transmission. I don't drive it very much, the other day I went to drive it and there was no pressure on the clutch, the pedal went all the way to the floor. I went to check the clutch master reservior and it was empty, I filled it up and bled the clutch several times but still no pressure. The master reservior is draining when bled. I checked all the lines for leaks but there was no leak anywhere that I can see. If I push the clutch pedal all the way down to the floor, I can still start the truck but of obviously, I can't engage any of the gears. I can also start the truck in 1st, 2nd, and 3rd gear but again, can't shift into any other gear because I have no clutch. What other areas (master/slave clutch?) Can I further diagnosis before spending money on a tow truck and expensive auto shop? Thanks in advance.
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Phoenix5ire
November 29, 2008.




Hi there,
Thank you for the donation.

You will have to check the clutch slave cylinder at the gear box for a leak, peel back the rubber boot and check for fluid. Also look under the dash where the clutch master cylinder attaches to the pedel, look for fluid leaking from the rear of the master cylinder, your problem should be one of these leaking.

Mark (mhpautos)

Mhpautos
Nov 29, 2008.
Hi Mark,

Thank you for the prompt response. It's been quite cold here so I haven't had a chance to look at it yet but I am planning on doing it this evening. I do have a question regarding the location of the slave cylinder. When you say look at the slave cylinder in the gear box, are you saying the slave cylinder is inside the gear box (transmission shell)? I do not remember seeing this slave cylinder anywhere on the hydraulic line from the Master cylinder to the transmission shell. Can you please help me locate this slave so I can narrow it down quicker? It's 20degrees here so it would really help me out from the cold. Thank you very much.

Lon
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Tiny
Phoenix5ire
Dec 1, 2008.
Hi there,

This should be on the side of the bell housing, there is one pipe going into it, it should be quite visible.

Mark (mhpautos)

Mhpautos
Dec 1, 2008.
Hi Mark,

Thanks again for the quick response. After sending my previous email to you, I realized that it was the slave cylinder that I was bleeding from, which is on the side of the bell housing. How do you examine the slave cylinder if it's leaking from the outside or do you have to take the bell housing cover off to see the rubber boot. What's the easiest way to examine if the slave cylinder is leaking? It does not appear that the slave is leaking from the outside, I assume it must be inside of the bell housing if it's not evident from the oustide? From your previous questions, it's not leaking under the dash near the paddle nor underneath the master cylinder either.

Thanks again for your help.

Lon

Tiny
Phoenix5ire
Dec 1, 2008.
Hi Mark,
After removing a small rubber covering directly underneath the gear box, I can see the slave cylinder inside and on the rubber boot, it is all wet and looks to be leaking. I stuck a screw drive thru the opening and touched the rubber boot and it was wet with fluid. So you're correct that the boot is leaking. What is the recommended step and do I replace the whole slave cylinder? If so, how do I get the slave cylinder out? It looks like I have to pull the gear box covering off, is this possible to do or do I need to take this to an auto shop? I am a little technical and is this something I can do myself ? I have changed timing-belt and water pump before, but nothing clutch related. I have also attached 2 pictures as visual guide to the gear box that I have, you probably know what it looks like already.

Thanks again for your help.

Lon


http://www.2carpros.com/forum/automotive_pictures/278668_DSC08448_1.jpg



http://www.2carpros.com/forum/automotive_pictures/278668_DSC08451_2.jpg


Tiny
Phoenix5ire
Dec 1, 2008.
Hi there,

OK, well I was unaware that it was an internal slave as that model here, (in Australia) has an external slave. I will send details on removal tonight my time and you can decide if you are up to doing this job, talk soon,

Mark.

Mhpautos
Dec 1, 2008.
Hi there,

Here is the transmission removal info, there is a special tool for the clutch hydraulic line disconnect and you will need a clutch aligning tool for the clutch assembly installation..

Mark (mhpautos)


http://www.2carpros.com/forum/automotive_pictures/61395_Graphic_61.jpg


http://www.2carpros.com/forum/automotive_pictures/61395_Noname_22.jpg



http://www.2carpros.com/forum/automotive_pictures/61395_Noname_1_4.jpg



http://www.2carpros.com/forum/automotive_pictures/61395_Noname_2_1.jpg


Mhpautos
Dec 2, 2008.
Hi Mark,

Thank you for your help, it looks like the job may be too big for an amature like myself so I've decided to take the truck to an auto shop that will replace the whole clutch system for me.

Thanks for your help again and have a great day, mate!

Lon
Minneasota, USA.

Tiny
Phoenix5ire
Dec 3, 2008.

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