Question about John Deere 420,1020,2010,2020,2510,2520 Tractor Float

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My 420 c won't steer to the left. I've made all the proper adjustments of lever, throwout bearing, and brake band. The tractor carries on straight ahead when I pull the lever all the way back as if the clutch hasn't disengaged although the throwout bearing moves as it should and the brake band tightens in sequence. The right side works fine with the same adjustments. Any thoughts on this will be appreciated.

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I'm not familiar with your system but it sounds like you could
have a bad pressure plate.

Posted on Jan 02, 2011


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I need to know how to replace the clutch in a 1993 colt vista

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Fig. Fig. 1: Clutch release bearing - 1990 Colt hatchback and sedan w/ 1.6L engine, 1990 Colt Wagon w/1.8L engine, and 1990-93 Vista

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Fig. Fig. 2: Clutch driven and drive discs - 1990-93 all models

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Fig. Fig. 3: Clutch release bearing - 1990 Colt Wagon w/1.5L engine, 1991-92 Colt hatchback and sedan w/4-speed and 1993 Colt hatchback and sedan w/1.8L engine

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  3. With the pilot tool supporting the clutch disc, loosen the pressure plate bolts gradually and in a crisscross pattern.
  4. Remove the pressure plate and clutch disc.
  5. Clean the transmission and clutch housing. Clean the flywheel surface with a non-oil based solvent. Wash your hands before installing or handling the clutch assembly parts. Hold the clutch disc by the center hub only.

Before assembly, slide the clutch disc up and down on the transmission input shaft to check for any binding. Remove any rough spots with crocus cloth and then lightly coat the shaft with Lubriplate.
  1. To remove the throwout bearing assembly: Remove the return clip and take out the throwout bearing carrier and the bearing.
  2. To replace the throwout arm use a / 16 in. punch, knock out the throwout shaft spring pin and remove the shaft, springs, and the center lever.
  3. Do not immerse the throwout bearing in solvent; it is permanently lubricated. Blow and wipe it clean. Check the bearing for wear, deterioration, or burning. Replace the bearing if there is any question about its condition.
  4. Check the shafts, lever, and springs for wear and defects. Replace them if necessary.
  5. If you hadn't planned on replacing the clutch disc, examine it for the following before reusing it. Loose rivets. Burned facing. Oil or grease on the facing. Less than 0.3mm left between the rivet head and the top of the facing.
  6. Check the pressure plate and replace it if any of the following conditions exist: Scored or excessively worn. Bent or distorted diaphragm spring. Loose rivets.
  7. Insert the control lever into the clutch housing. Install the two return springs and the throwout shaft.
  8. Lock the shift lever to the shaft with the spring pin.
  9. Fill the shaft oil seal with multipurpose grease.
  10. Install the throwout bearing carrier and the bearing. Install the return clip.
  11. Grease the carrier groove and inner surface.
  12. Lightly grease the clutch disc splines.

The clutch is installed with the larger boss facing the transmission.
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When pulling in the clutch there is a loud squalching noise.

Sounds like your clutch throwout bearing is either bad or going bad. This is due to improper clutch cable adjustment. Just like in a straight shift automobile, if you keep your foot on the clutch pedal, the throwout bearing runs continuously shortening the life of the bearing. On a motorcycle, if the clutch cable is not adjusted to have just a bit of freeplay in it, the bearing will run continously as well shortening the life of the bearing. But, then again it could have just been a faulty bearing.

To repair the problem, you must remove the outer primary cover. First, drain the primary/transmission oil. Then you must loosen the primary chain adjuster beneath the primary cover. Loosen the lock nut and turn the adjuster bolt outward to lower the adjuster shoe inside the primary.

Then remove the clutch inspection cover, the small spring, and the locknut on the clutch release mechansim. Remove the left hand foot peg. Remove all the bolts holding the outer primary cover on. As you remove the primary cover, you will have to turn the screw inside the release mechanism inwards to get it out of the release mechanism.

Once you get the primary cover off, you can see the clutch throwout or release bearing in the center of the clutch assembly. Remove the snap ring and pull the bearing out. Inspect and replace the bearing if found to be defective. Carefully drive the center bolt out and the bearing out of it's holder. Install in the reverse manner.

Reassembly is reverse of disassembly. Install a new gasket on the primary and slide the primary cover in place while turning the clutch release screw into the the release mechanism. Install the bolts that hold the primary cover on and tighten. Tighten small primary cover bolts to 80-110 Inch pounds and the left foot peg bolts to 16-28 Foot pounds.

Adjust the primary chain tensioner to obtain 3/8' to 1/2" up and down slack when checked through upper inspection cover on outer primary. To adjust the clutch cable, find the bellows looking cover over the cable adjuster. Loosen the lock nut and adjust the cable as short as possible. Back at that the adjuster on the primary cover, slowly turn the adjuster screw clockwise until it bottoms out and quits turning. Do not force the screw to turn, just until it bottoms out. Now, back it up 1/4 turn and install the locknut. You may have to turn it just a bit one way or the other to get the locknut in. Install the spring and the cover with the quad ring in place. ADD OIL TO THE PRIMARY, 32 OUNCES of H-D Sport Trans or equilivent. To adjust the cable, adjust cable adjuster in the middle of the cable out as far as it will go without forcing anything. Squeeze the clutch lever a few times and adjust the adjuster so that you have 1/16" to 1/8" freeplay at the lever, about the thickness of a nickle between the lever and lever stancion. Lock the locknut on the cable adjuster and reposition the bellows cover.

As you can see, this is not a very difficult job but it is not for the "faint of heart" since it involves removing the primary cover. I would rate the job difficulty as "moderate" due to this necessity. The only special tool required would be a set of snap ring pliers. Good Luck!

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