How do I remove the clutch pilot bearing in my 1990 Mazda RX7

Hay, try this.
https://www.youtube.com/watch?v=USYptAjPr8g&ab_channel=TonyWestDIY

Good pilot bearing? Wear on the input shaft bearing? Have the run-out checked on the input shaft? Three biggest things to check off the top of my head.

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

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

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

1. Remove the transmission or transaxle as outlined.
2. Insert a pilot shaft or an old input shaft into the center of the clutch disc, pressure plate, and the pilot bearing in the crankshaft.
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.

1. Support the clutch disc and pressure plate with the pilot tool.
2. Turn the pressure plate so that its balance mark aligns with the notch in the flywheel.
3. Install the pressure plate-to-flywheel bolts head-tight. Using a torque wrench and, working in a crisscross pattern, tighten the bolts to 11-15 ft. lbs.
4. Install the transmission or transaxle as outlined.
5. Adjust the clutch as described in the following information.

You will have to drop the transmission. Inspect the pressure plate for excessive wear and stretched springs when you remove it. Replace your throwout bearing at the same time, they are usually worn out by the time you need a clutch.
Mike

ok new clutch. did you replace the throw out bearing? what about the pilot bearing,replace that too?these are the main squealers in clutches. if you push in on the clutch w/engine running does the squeal stop?[if so i suspect throw out bearing] if it squeals either w/clutch in or out,i suspect pilot bearing. hope this helps and thank you for choosing fixya.com if you need further assistance,please repost your question to fixya.com

throw-out bearing or diaphram going bad. is it hard to put in gear?

Check to see if you missed a bolt first. What I have run in to often, is the input shaft gets stuck in the pilot bearing. Raise the trans as far as you can and release toe jack as low as you can a few times. Also try moving the whole trans side to side as far as you can and the shaft will work itself loose. You can also carefyully slip a pry bar in between the flanges on each side and pull both together and some times that wiill pop it out. When you make the final pull try to have the trans with an imaginaty line with the engine crank shaft if both are aligned it should come right out.

The clutch assembly is located inside the 'bell-housing' which is the flared forward section of the gearbox. Hence, the tailshaft and gearbox need be removed to inspect clutch condition.

do an image search on google for rx7 vacuum hose diagram, theres loads to choose from or try www.rx7club.com or www.rx7forums.com

Replace the antenna or try to change her location.