Clutch Disc

Remove and replace the clutch disc on a 1992 Dodge Viper by lowering the transmission, removing the pressure plate assembly, inspecting the flywheel, and installing a new clutch disc with proper alignment.

Warnings

Tools required

Parts

• Clutch disc × 1 — Use OEM specification or performance equivalent rated for 400+ lb-ft
• Pressure plate (if resurfacing not possible) × 1 — Use OEM specification
• Pilot bearing/bushing × 1 — Use OEM specification
• Transmission drain plug washer × 1 — Use OEM specification
• Thread locking compound (medium strength) × 1 — Loctite 242 or equivalent

Fluids

• Mopar MS-9224 or 75W-90 GL-4 — 4.2 qt

Preparation

1. Park vehicle on level, solid surface and engage parking brake.
2. Place wheel chocks behind rear wheels.
3. Disconnect negative battery cable to prevent accidental starter engagement.
4. Allow exhaust system to cool completely if vehicle was recently driven.
5. Raise vehicle and support securely on four jack stands at proper lift points (front and rear subframe locations).
6. Remove rear wheels to provide additional working clearance for transmission removal.
7. Place drain pan under transmission drain plug.

Procedure

1. 1

   Drain transmission fluid
   Locate the transmission drain plug on the bottom of the transmission case. Remove the drain plug and allow fluid to drain completely into the drain pan (verify capacity against factory specification for the T-56 transmission). Inspect the drained fluid for metal particles or debris indicating bearing wear. Remove and discard the drain plug washer.
   Torque spec

   Drain Plug34 Nm (25 lb-ft)
2. 2

   Disconnect driveshaft
   Mark the driveshaft flange to differential flange orientation for proper reinstallation phasing. Remove the bolts securing the driveshaft to the rear differential flange (verify count against factory documentation). Support the driveshaft and slide it rearward to disengage from the transmission output shaft. Lower the driveshaft and set aside. Inspect the transmission output shaft seal for leakage.
3. 3

   Remove starter motor
   Disconnect the electrical connections from the starter motor (main battery cable and trigger wire). Remove the mounting bolts securing the starter to the bellhousing (verify count against factory documentation). Remove the starter motor and set aside. This provides access to lower bellhousing bolts and reduces weight on the transmission.
   Torque spec

   Mounting Bolts23 Nm (17 lb-ft)
4. 4

   Disconnect shift linkage and electrical connections
   Disconnect the shift linkage from the transmission shift lever (typically a ball-and-socket connection or clevis pin). Remove any retaining clips or pins securing the linkage. Disconnect the reverse light switch electrical connector and any other transmission-mounted sensors. Mark or photograph connections for correct reassembly.
5. 5

   Disconnect hydraulic clutch line
   Locate the hydraulic clutch line connection at the transmission bellhousing (slave cylinder connection). Remove the retaining clip or threaded fitting securing the hydraulic line to the slave cylinder. Allow any residual fluid to drain. The internal slave cylinder will remain with the transmission. Cap or plug the hydraulic line to prevent contamination.
6. 6

   Support transmission and remove crossmember
   Position a transmission jack under the transmission pan with a block of wood to distribute load. Raise the jack slightly to support the transmission weight. Remove the four bolts securing the transmission mount to the crossmember. Remove the bolts or nuts securing the crossmember to the frame (typically two per side). Remove the crossmember and transmission mount as an assembly.
7. 7

   Remove bellhousing bolts
   Remove all bellhousing-to-engine block bolts. Remove all bellhousing-to-engine block bolts (verify count and locations against factory documentation for this V10/T-56 application), accessible from various angles around the perimeter. The upper bolts may require extensions to reach. Support the transmission weight on the jack throughout this process. Verify all bolts are removed before attempting to separate the transmission.
   Torque spec

   Bell Housing Bolts68 Nm (50 lb-ft)
8. 8

   Remove transmission
   With all bellhousing bolts removed and transmission fully supported on the jack, carefully slide the transmission straight back away from the engine. The transmission input shaft must slide cleanly out of the clutch disc splines and pilot bearing. Move slowly and ensure the transmission remains level. Once the input shaft clears the bellhousing, lower the transmission jack and roll the transmission out from under the vehicle. This requires approximately 12-15 inches of rearward clearance.
9. 9

   Inspect and remove pressure plate
   With the transmission removed, the pressure plate and clutch disc are now visible. Mark the pressure plate to flywheel orientation using a paint pen or punch marks for balanced reassembly. Remove the pressure plate bolts (verify count against factory documentation) in a gradual star pattern (loosen each bolt 2-3 turns before moving to the next) to prevent warping the pressure plate. Remove the pressure plate and clutch disc together. Inspect the pressure plate friction surface for heat checking, cracks, or glazing. Inspect the clutch disc for oil contamination, glazing, worn friction material, or broken springs.
   Torque spec

   Pressure Plate Bolts27 Nm (20 lb-ft)
10. 10

    Inspect flywheel and pilot bearing
    Inspect the flywheel friction surface for heat cracks, hot spots, scoring, or glazing. Minor surface imperfections can be resurfaced by a machine shop; deep scoring or cracks require flywheel replacement. Check flywheel runout if resurfacing is questionable. Inspect the pilot bearing in the center of the crankshaft for roughness, wear, or noise by spinning with a finger. Replace the pilot bearing as preventive maintenance using a slide hammer or bearing puller and press or drive the new bearing into place flush with the crankshaft bore.
11. 11

    Clean and prepare mating surfaces
    Clean the flywheel friction surface with brake parts cleaner and a clean rag. Do not use compressed air or abrasive methods that generate dust. Clean any residual oil or grease from the flywheel, pressure plate mounting surface, and input shaft splines. Apply a very light coating of high-temperature grease to the input shaft splines (do not over-apply as excess can contaminate the clutch disc). Ensure no oil or grease contacts the clutch disc friction surfaces.
12. 12

    Install clutch disc and pressure plate
    Position the new clutch disc against the flywheel with the friction material side toward the flywheel and the hub assembly protruding toward the transmission (the disc is marked 'Flywheel Side' or similar). Insert the clutch alignment tool through the clutch disc hub and into the pilot bearing to center the disc. Position the pressure plate over the clutch disc, aligning the previous orientation marks if reusing the original pressure plate. Install all pressure plate bolts (verify count against factory documentation) finger-tight. Tighten the bolts gradually in a star pattern to the specified torque. Remove the alignment tool only after all bolts are torqued.
    Torque spec

    Pressure Plate Bolts27 Nm (20 lb-ft)
13. 13

    Install transmission
    Apply a light coating of high-temperature grease to the transmission input shaft splines if not already done. Position the transmission on the transmission jack and raise into position, aligning the input shaft with the clutch disc hub. Ensure the transmission remains level and the input shaft aligns with the pilot bearing bore. Slide the transmission forward carefully, allowing the input shaft to engage the clutch disc splines. If resistance is encountered, rotate the input shaft slightly (by rotating the output shaft) to align splines. Do not force the transmission forward or use bellhousing bolts to draw the transmission into place. Once the bellhousing is flush with the engine block, install all bellhousing bolts and tighten to specification.
    Torque spec

    Bell Housing Bolts68 Nm (50 lb-ft)
14. 14

    Install crossmember and transmission mount
    Raise the transmission slightly with the jack and position the crossmember and transmission mount assembly. Install the crossmember-to-frame bolts and tighten securely. Install the transmission mount-to-crossmember bolts and tighten. Lower the transmission jack slightly to load the mount, then remove the jack.
15. 15

    Reconnect components
    Reconnect the hydraulic clutch line to the slave cylinder at the bellhousing, installing the retaining clip or tightening the threaded fitting. Reconnect all electrical connections (reverse light switch and sensors). Reconnect the shift linkage to the transmission shift lever and secure with clips or pins. Install the starter motor with the two mounting bolts torqued to specification, then reconnect the starter electrical connections.
    Torque spec

    Mounting Bolts23 Nm (17 lb-ft)
16. 16

    Reconnect driveshaft
    Slide the driveshaft forward and engage the splines onto the transmission output shaft. Align the driveshaft flange to differential flange using the marks made during disassembly. Install the four flange bolts and tighten securely. Check that the driveshaft rotates freely without binding.
17. 17

    Refill transmission
    Install a new drain plug washer and install the transmission drain plug, torquing to specification. Locate the transmission fill plug on the side of the transmission case. Remove the fill plug and add the specified transmission fluid per factory documentation for the T-56 (verify correct Mopar manual transmission lubricant specification) until fluid begins to drip from the fill hole. Install the fill plug and torque to specification.
    Torque spec

    Drain Plug34 Nm (25 lb-ft)

    Fill Plug34 Nm (25 lb-ft)
18. 18

    Final checks and reinstall wheels
    Verify all fasteners are tightened, all electrical connections are secure, and no tools or parts are left in the work area. Reinstall the rear wheels and torque lug nuts to specification. Reconnect the negative battery cable.

Reassembly

1. Torque all fasteners to specification using a star or criss-cross pattern where applicable.
2. Ensure the clutch disc is installed with the correct orientation (friction side toward flywheel, hub protruding toward transmission).
3. Use new washers or gaskets where specified.
4. Bleed the hydraulic clutch system if air entered the lines during disconnection (pump clutch pedal until firm).

Verification

• Start the engine with the clutch pedal depressed and transmission in neutral. Verify no unusual noises from the clutch or transmission.
• With the engine running and clutch pedal depressed, shift through all gears to verify smooth engagement without grinding.
• Test drive the vehicle in a safe area, verifying smooth clutch engagement and disengagement, normal pedal feel, and no slippage under load.
• Check for fluid leaks around the transmission drain plug, fill plug, and input shaft seal after test drive.
• Verify proper clutch pedal freeplay and adjustment per factory specifications (typically 1-2 inches of freeplay before resistance).

Related trouble codes on this vehicle

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