Question about 1994 Ford F150 Styleside Supercab

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Clutch wont work

A new clutch, pressure plate, throwout bearing, and clutch master cylinder, still wont shift gears, why?

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Probably air in the clutch hydraulic system. Did you bleed it? What fluid did you use?

Posted on Dec 15, 2008

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Clutch stays down. Slowly will take of with clutch fully pressed. Does not slip.dont understand


It sounds as though the clutch pressure plate has become weak.

When you press the clutch pedal the release/throwout bearing presses against the centre of the clutch pressure plate. This causes the metal 'fingers' -the springs- on the pressure plate to flex and release pressure on the driven plate - momentarily disconnecting the drive from engine to gearbox.

The link below is of generic clutch images
how clutch works Google Search

A weak pressure plate isn't fully releasing the driven plate. If you're going to do any replacing of parts - a clutch should be replaced in 3 units: Pressure plate, driven plate and release/throwout bearing.

May 05, 2016 | Cars & Trucks

1 Answer

Hi i just put a new master cylinder a month back now today my clutch felt hard and when i put it in reverse heard a broken sound clutch went flat and oil came from the master what can the problem be


Umm...

A mechanical 'breaking noise' doesn't sound good. It's hard to diagnose a problem online without being there to see/hear the vehicle. But .. it may be that your clutch pressure plate has broken/ release/throwout bearing has broken?

It's difficult to see why the master cylinder should leak - unless it was incorrectly fitted in the first place?

Just to check ... The master cylinder is in the engine bay/compartment and is where you top up with clutch fluid. When a master cylinder fails it usually results in no pressure at the clutch pedal, not a leak.

The clutch slave cylinder is the one that does all the work. When you press the pedal hydraulic pressure is sent from the master cylinder to the slave cylinder - which then pushes the release/throwout bearing against the clutch pressure plate and 'disconnects' the driven plate .. allowing you to change gear.

The slave cylinder is the one that does all the hard work - it is located somewhere where engine and gearbox mate together, usually at the bottom right/left. It's usually the one that fails/leaks. It's quite easy to replace..

I don't think it is anything to do with reverse gear. It's more to do with the clutch pedal being depressed - and, I would suspect - something has failed.

The link below is generic images of a clutch:
clutch diagram Google Search

Basically, a clutch is 3 parts. There's the 'pressure plate' which bolts onto your flywheel. The pressure plate is a 'spring'. You depress the clutch pedal and the release/throwout bearing presses onto the centre of the pressure plate causing the 'fingers' - the springs - to bend back and take pressure off the driven plate - which is the link - the drive - between engine and gearbox.

If you have a leak your clutch will not work. This causes a 'grinding/crashing' noise when you try to change gear. The first thing you should do is check where the leak is coming from and do something about it.

The 'noise' that you mention may be due to the fact that the gears are 'grinding' as they try to mesh together without the use of the clutch.

The first thing you should do is check why there's a leak. It's difficult to see why a new master cylinder is leaking unless it was incorrectly fitted and damaged (pipes incorrectly connected..).

If it's the slave cylinder that is leaking - replace it. Easy job.

If Master cylinder and slave cylinder are ok - you have to look at your clutch unit. A clutch is always replaced with 3 parts ... throwout bearing/pressure plate and driven disk.

May 04, 2016 | Cars & Trucks

1 Answer

I hauled a trailer about 40 miles and when I went to leave the clutch pedal went to the floor no resistance and wouldn't disengage clutch master cylinder has fluid throwout bearing has been making noi


It sounds like the throw out bearing separated. You will want to change the clutch and pressure plate when you replace the throw out bearing.

Aug 18, 2013 | Cars & Trucks

1 Answer

Clutch not engaging


Well, it would shift easily with engine off, because the transmission input shaft is not turning. Engine running and clutch engaging good, the input shaft would again be stationary and allow smooth shifting.
What you have to determine is if the clutch disc or pressure plate is bad (a new clutch is needed), or if the pedal hydraulic system has a malfunction. When you push the pedal down, a rod from the top of pedal pushes into the clutch master cylinder bolted to the firewall under the hood. This cylinder has a reservoir filled with brake fluid. When the rod forces fluid from the clutch master down a steel line and into the clutch slave cylinder down on the transmission bell housing, the hydraulic pressure forces a plunger from the slave cylinder to extend and push the clutch fork lever a small amount, enough to force the clutch release bearing (aka throw-out bearing) against the pressure plate. This relieves pressure on the clutch disc and input shaft becomes stationary for easy shifting.

Jul 26, 2013 | 2000 Chevrolet Blazer

1 Answer

Clutch wont engage after new install


Maybe the clutch master cylinder is not building hydraulic pressure? The internal seals in it may not be holding. Watch the slave cylinder push the clutch lever while someone presses the clutch pedal. If travel is not enough and was bled properly, you may need a new master cylinder.

Jul 07, 2013 | 1991 Chevrolet S-10

1 Answer

1990 magna gearbox putnew cluch presureplate throwout bearing new master@slave cylender gear change good untill i start motor then no gears can start in gear drive@change soon as car stops sticks in gear...


Well, it sounds like the clutch cylinder / clutch linkage is not properly adjusted or the clutch cylinder is not fully bled, or it is malfunctioning -- it's not fully depressing the pressure plate when the pedal is pushed down, therefore, the clutch is still engaged.

Charlie

Mar 18, 2011 | Mitsubishi Passenger Cars & Trucks

1 Answer

Cant put my 98 Hombre in gear.


There are 4 parts to this system. First is the clutch master cylinder, second is the slave cylinder, third is the clutch throwout bearing, and last is the clutch pressure plate. These are all the parts that can be the issue. The master cylinder is the part that pumps the fluid to the slave cylinder, which pushes on the linkage to the throwout bearing, which pushes on the fingers on the clutch pressure plate, releasing the clutch. If you drained the fluid out, first you need to make sure that all the AIR is out of the system. It's just like brakes, it will not pump if it has air in it. The hydraulic portion of the system rarely gives problems, so here's a question. How old is the clutch in your truck? If it's over 100,000 mi, then you should start suspecting the throwout bearing. Did the truck make any groaning noises when you pressed the clutch recently, and then perhaps it stopped on its own? These are signs of throwout bearings going out. Here's the bit of troubleshooting that you need. go under your truck, and find where the slave cylinder attaches and pushes on the linkage that goes into the bell housing on the transmission. Feel this linkage; it should have very limited to no movement. if it moves significantly, then your throwout bearing went out, and you will need to replace your clutch and throwout bearing. If not, then it's the hydraulic portion of the brakes, and you'll have to troubleshoot between air in the system, master cylinder failure, or slave cylinder failure.

Feb 15, 2010 | 1998 Isuzu Hombre

1 Answer

1988 fiero gt, I have a shifting problem, It shifts into gear when not running but when i start it up it only shifts into gear when i pump the clutch really fast. I added a new master cylinder and slave...


i would check the throwout bearing, if this is the problem try starting in first go for a while than try up shifting to second. after a while your transaxle should warm up making an easier gear transition. ( this only partains to bad throwout bearing )

Dec 14, 2009 | Pontiac Fiero Cars & Trucks

2 Answers

Abnormal clutch pedal operation


You've replaced the master, the slave, now I would check to see if the throwout fork will move by hand. If you can move the fork by hand I would say that your pressure plate and or throwout bearing are worn out. First try to just gravity bleed the system. If that doesnt work, it may be time for a clutch, pressure plate, and bearing. The pressure plate spring pushes the pedal back up and depending on how many miles and driving habit those little arms on it break off and just wear out. I hope this helps you.

Aug 19, 2009 | 1997 Mitsubishi 3000GT

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