Chevrolet 2001 Corvette Manuel utilisateur

2000-01 CLUTCHES

Corvette

APPLICATION

MANUAL TRANSMISSION APPLICATIONS

DESCRIPTION & OPERATION

Systemusesa single-plate clutch disc, a diaphragmspring pressure plate and a permanently

lubricated clutch release bearing. Clutch release system is hydraulic. Corvette uses a concentric

actuator/release bearing assembly located in the clutch housing. The hydraulic system provides

automatic clutch release adjustment.

BLEEDING

1. Clean cap. Remove reservoir cap and diaphragm. Fill reservoir and keep full throughout

procedure. Disconnect negative battery cable. Raise and support vehicle. Disconnect heated

Application Transmission Model (RPO Code)

Chevrolet Corvette Borg-Warner T56 6-Speed (MM6)

NOTE: Bleeding is necessary if system has been opened or if air has been

drawn into system due to low fluid level in reservoir.

CAUTION: When battery is disconnected, vehicle computer, memory

systems and remote keyless entry transmitters lose memory

data. Driveability problems may exist until computer systems

have completed a relearn cycle. Information transmitters (tire

pressure, door lock/unlock, seat position memory, etc.) if

equipped, may not operate until reprogrammed. See

COMPUTER RELEARN PROCEDURES article in GENERAL

INFORMATION and appropriate POWER DOOR LOCKS &

REMOTE KEYLESS ENTRY SYSTEMS article in ACCESSORIES

& EQUIPMENT before disconnecting battery.

CAUTION: DO NOT use silicone, mineral or paraffin base oil in clutch

hydraulic system, or damage to rubber parts in cylinders may

occur.

2001 Chevrolet Corvette

2000-01 CLUTCHES Corvette

2001 Chevrolet Corvette

2000-01 CLUTCHES Corvette

Monday, April 06, 2009 2:08:46 PM Page 1 ©

2005 MitchellRepair Information Company, LLC.

Monday, April 06, 2009 2:08:50 PM Page 1 ©

2005 MitchellRepair Information Company, LLC.

oxygen sensor connectors. Remove exhaust take

down pipe flange nuts. Remove exhaust

intermediate pipe-to-rear pipe bolts. Remove front exhaust hanger bolts from bracket.

Remove rear exhaust hanger bolts from intermediate pipes. Remove intermediate pipe

assembly.

2. Remove driveline tunnel closeout panel. Attach hose to bleed screw on actuator and

submerge other end in container of hydraulic fluid. Have an assistant depress clutch pedal

slowly and hold. Loosen bleeder on clutch actuator cylinder to purge air from system.

Tighten bleeder and release pedal. Repeat procedure until all air is completely purged and

no bubbles are visible. Fill reservoir. Install diaphragm and cap.

3. Install driveline tunnel closeout panel and exhaust intermediate pipe. Lower vehicle. Apply

parking brake and block drive wheels. Shift transmission into Neutral. Start engine and run

at idle. Release clutch pedal. Depress clutch pedal and hold for 9 seconds. Attempt to shift

transmission into Reverse. If gears grind, bleed system again.

ADJUSTMENTS

CLUTCH PEDAL FREE PLAY & PEDAL HEIGHT

CLUTCH PRESSURE PLATE (OFF-VEHICLE)

1. Place pressure plate (flat surface down) on a press. Compress pressure plate diaphragm

spring fingers until tension is released from stepped adjusting ring. Place 2 screwdrivers

against 2 of 3 stepped adjusting tension spring stops, just ahead of adjusting ring tension

springs.

2. Using screwdrivers, rotate stepped adjusting ring counterclockwise (compressing tension

springs) until adjusting ring steps are fully adjusted out, and then continue to hold in

position. Release press pressure from pressure plate diaphragm spring fingers. Release

adjusting ring tension spring stops. Remove pressure plate from press.

CLUTCH PRESSURE PLATE (ON-VEHICLE)

1. Raise and support vehicle. Remove flywheel inspection cover. Have assistant press clutch

pedal until tension is released from clutch pressure plate stepped adjusting ring. Continue to

hold pedal. Place 2 screwdrivers against 2 of 3 stepped adjusting tension spring stops, just

NOTE: Clutch pedal free play and pedal height are automatically adjusted.

No manual adjustment is required.

NOTE: The following procedure must be performed with aid of an

assistant.

2001 Chevrolet Corvette

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2005 MitchellRepair Information Company, LLC.

ahead of adjusting ring tension springs.

2. Using screwdrivers, rotate stepped adjusting ring counterclockwise (compressing tension

springs) until adjusting ring steps are fully adjusted out, and then continue to hold in

position. Have assistant release clutch pedal. Release adjusting ring tension spring stops.

Install flywheel inspection cover. Lower vehicle.

TROUBLE SHOOTING

REMOVAL & INSTALLATION

CLUTCH ACTUATOR

Removal

1. Disconnect negative battery cable. Remove left instrument panel lower insulator panel.

Using a flat-blade tool, carefully pry instrument panel courtesy lamp assembly from left

lower closeout panel. Remove push-on retaining nut from steering column bracket stud.

2. Disconnect left lower closeout panel twist-

rivets from instrument panel lower support beam.

Insert instrument panel courtesy lamp assembly up through closeout panel. Lower and

remove closeout panel. Remove clutch master cylinder rod retainer. Remove clutch master

cylinder rod from clutch pedal. Raise and support vehicle.

3. Disconnect actuator hose from hose retaining clip at rear of engine. Using Hydraulic Clutch

NOTE: For trouble shooting, see appropriate table in TROUBLE SHOOTING

article in GENERAL INFORMATION.

NOTE: Transmission removal and installation procedures are included in

CLUTCH ASSEMBLY .

CAUTION: When battery is disconnected, vehicle computer, memory

systems and remote keyless entry transmitters lose memory

data. Driveability problems may exist until computer systems

have completed a relearn cycle. Information transmitters (tire

pressure, door lock/unlock, seat position memory, etc.) if

equipped, may not work until reprogrammed. See COMPUTER

RELEARN PROCEDURES article in GENERAL INFORMATION

and POWER DOOR LOCKS & REMOTE KEYLESS ENTRY

SYSTEMS article in ACCESSORIES & EQUIPMENT before

disconnecting battery.

2001 Chevrolet Corvette

2000-01 CLUTCHES Corvette

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2005 MitchellRepair Information Company, LLC.

Separator (J

36221), depress White circular release ring on actuator hose while pulling

lightly on master cylinder hose. Remove actuator cylinder hose fromhose retaining clip.

Disconnect clutch actuator cylinder hose from clutch master cylinder hose. Protect both

hose coupling ends from dirt and damage.

4. Remove driveline support assembly and transmission from vehicle. See CLUTCH

ASSEMBLY . Remove clutch actuator cylinder mounting bolts and actuator cylinder from

driveline support assembly.

Installation

When installing clutch hydraulic hoses, position hoses away from other components to prevent

damage. To install, reverse removal procedure. Tighten all bolts and nuts to specification. See

TORQUE SPECIFICATIONS . Bleed hydraulic system. See BLEEDING .

CLUTCH ASSEMBLY

Removal

1. Disconnect negative battery cable. On convertible models, remove folding top storage

compartment lid extension panel. On all models, open console door. Pull up on rear of

traction/ride control switch to release retaining clips. If switch does not release from trim

plate, carefully insert screwdriver into recess at rear of switch and gently pull up on rear of

switch. Disconnect electrical connector from switch, and remove switch.

2. Using small flat-blade screwdriver, carefully remove console retaining nut covers. Remove

front and rear retaining nuts. Remove instrument panel accessory trim plate nuts. Lift rear of

console slightly and pull rearward to release front of console from under instrument panel

trim plate. Disconnect electrical accessory plug connector. Unscrew electrical accessory

plug retainer from housing, and remove housing from console.

3. Disconnect fuel door release switch connector. Remove fuel door release switch. Turn

NOTE: When reconnecting quick-

connect hydraulic hose fittings, pull back

on fittings to verify engagement. DO NOT rely on audible click or

visual verification. Also check clutch hydraulic hoses for twists or

kinks.

CAUTION: When tilting rear of driveline downward, observe clearances

between rear of engine and composite dash panel, and

between rear of transmission assembly and underbody. To

prevent vehicle damage, DO NOT allow engine to rest

unsupported against composite dash panel.

2001 Chevrolet Corvette

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console over. Using small flat

blade screwdriver, carefully release switch tabs. Remove

console from vehicle. See Fig. 1 . Pry up and remove shift lever knob button. Pry control

knob retainer out of slots and remove retainer. Unscrew shift lever knob.

Fig. 1: Removing Center Console

Courtesy of GENERAL MOTORS CORP.

4. Grasp sidesof shift control boot and apply light pressure inward (toward shift lever) to

release boot retaining tabs from instrument panel accessory trim plate. Release all boot

retaining tabs. Lift boot away fromtrimplate and remove boot. Apply parking brake and

shift transmission into 4th gear to provide clearance. Open lighter door and remove ashtray.

Pry gently at side edge of accessory trim plate grille with flat-blade screwdriver to release

tab. Remove grille.

5. Remove accessory trimplate retaining screws next to lighter, behind ashtray, and in grille

opening. Grasp sides of accessory trim plate near curve at base. Lift rear of trim plate to

clear driveline tunnel studs and pull trim plate rearward to release locking tabs. Disconnect

2001 Chevrolet Corvette

2000-01 CLUTCHES Corvette

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2005 MitchellRepair Information Company, LLC.

electrical connector fromlighter. Remove trim plate. Remove shift control closeout cover

retaining nuts, and remove cover. Shift transmission into Neutral.

6. Press down to engage shift control neutral lock pin. Remove transmission shift rod clamp

bolt. Remove shift control mounting bolts. Raise shift control assembly to release locator

fromshifter bracket on side of driveline support assembly. Release shift control from

transmission shift rod and remove shift control assembly. See Fig. 2 .

Fig. 2: Removing Shift Control Assembly

Courtesy of GENERAL MOTORS CORP.

7. Using a flat-blade screwdriver, carefully pry out courtesy lamp assembly from left lower

instrument panel closeout panel. Remove push-on retaining nut fromsteering column

bracket stud. Release lower closeout panel push-in retainers from instrument panel support

beam. Insert courtesy lamp assembly up through opening in closeout panel. Lower and

remove panel by releasing notch in right front edge of panel fromtab on accelerator pedal

2001 Chevrolet Corvette

2000-01 CLUTCHES Corvette

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2005 MitchellRepair Information Company, LLC.

bracket.

8. Remove clutch master cylinder push rod retainer. Disconnect push rod fromclutch pedal.

Raise and support vehicle. Remove clutch actuator hose from retaining clip at rear of

engine. Using Hydraulic Clutch Separator (J-36221), depress White circular release ring on

actuator hose while pulling lightly on master cylinder hose to disconnect. Plug hose

openings. Remove rear wheels.

9. Disconnect oxygen sensor electrical connectors. Remove take-down pipe flange nuts.

Remove intermediate exhaust pipe-to-rear pipe bolts. Remove front exhaust hanger bolts at

take-down pipe bracket. Remove rear exhaust hanger bolts from rear intermediate pipes.

Remove intermediate pipe assembly. Wire muffler assemblies to underbody to support out

of way.

10. Remove driveline tunnel closeout panel bolts, and remove closeout panel. Measure rear

transverse spring stud height. See Fig. 3 . Carefully install Transverse Spring Compressor

and Adapters (J-33432-A and J-33432-97), and compress spring. DO NOT scratch or

damage transverse spring. Spring must be replaced if scratch is significant. Remove

retainers, nuts, bolts and insulators attaching transverse spring to lower control arms.

Remove mounting bolts, spacers and insulators attaching spring to crossmember. Remove

spring from vehicle.

2001 Chevrolet Corvette

2000-01 CLUTCHES Corvette

Monday, April 06, 2009 2:08:46 PM Page 7 ©

2005 MitchellRepair Information Company, LLC.

Fig. 3: Measuring Rear Transverse Spring Stud Height

Courtesy of GENERAL MOTORS CORP.

11. Support lower control arm with jack. Loosen, but do not remove, left outer tie rod end stud

nut. Install Ball Joint Separator (J-

42188) between suspension knuckle and tie rod end stud.

Tighten separator bolt until stud separates from knuckle. Remove separator and stud nut,

and separate tie rod end fromknuckle. Remove left lower shock absorber mounting bolt.

2001 Chevrolet Corvette

2000-01 CLUTCHES Corvette

Monday, April 06, 2009 2:08:46 PM Page 8 ©

2005 MitchellRepair Information Company, LLC.

12. Disconnect lower ball joint from steering knuckle. Loosen, but do not remove, left lower

ball joint stud nut. Install Ball Joint Separator (J-42188) between suspension knuckle and

ball joint stud. Tighten separator bolt until stud separates from knuckle. Remove separator

and stud nut, and separate ball joint from knuckle.

13. Repeat steps 11 and 12 for right side of vehicle. Install Transmission Support Fixture (J-

42055) on transmission jack. Position jack and firmly secure jack to transmission.

Disconnect wiring harness and brake hose clips from rear crossmember. Remove lower

differential-to-transmission nut. Remove transmission mount-to-rear crossmember nuts.

Place a transmission jack under rear crossmember and secure crossmember to jack. Using

hand tools only, remove rear crossmember retaining nuts.

14. With aid of an assistant, slowly lower rear crossmember and remove from vehicle. Remove

transmission mount bracket-to-differential bolts, and remove mount with bracket. Using pry

bar, gently release axle shafts from differential. Wire axle shafts to underbody. Remove

retainers holding wiring harness to driveline support and position out of way.

15.

Slowly lower driveline about 2" (50 mm), while adjusting angle of tilt to prevent damage to

body structure, until electrical connectors can be accessed. Disconnect vehicle speed sensor

electrical connector. Disconnect wiring harness retainer and clip from stud on top of

differential rear cover. Disconnect back-up light, reverse lockout solenoid, gear select (skip

shift) solenoid and transmission fluid temperature sensor electrical connectors from

transmission.

16. Insert putty knife between edge of shifter bracket on side of driveline support and brake

hose retainer on driveline tunnel wall. SLOWLY lower driveline while adjusting angle of

tilt, and check relationship between top rear of differential and lowest part of luggage

compartment floor. Differential should not be lowered past lowest point of luggage

compartment floor. PCV hoses, routed along rear of engine intake manifold, may contact

dash panel.

17. Release wiring harness retainer along top of transmission. Ensure harness is free of

driveline. Using a block of wood under rear of engine oil pan, place a jack under wood to

support engine and to keep engine fromresting on composite dash panel. Remove 5

CAUTION: Use an assistant to remove driveline and transmission

assembly to prevent damage to vehicle.

CAUTION: To prevent damage when tilting down, lowering and

removing rear of driveline, insert a putty knife or similar

tool between shift control bracket on driveline support

assembly and brake pipe retainer on driveline tunnel wall.

2001 Chevrolet Corvette

2000-01 CLUTCHES Corvette

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2005 MitchellRepair Information Company, LLC.

driveline support

flywheel housing bolts. Carefully bend wiring harness bracket away

fromdriveline to allow clear path for driveline removal.

18. Have an assistant insert a flat-blade tool between edge of driveline support and engine

flywheel housing. Gently begin to pry driveline loose from engine. With an assistant guiding

front of driveline, slowly lower driveline, while watching angle of tilt and separating

driveline from engine, until drive shaft at front of driveline just clears flywheel housing.

Slowly lower driveline completely out of vehicle.

19. With driveline and transmission removed fromvehicle, clutch assembly can now be

serviced. Remove flywheel inspection cover bolts, and remove inspection cover. Remove

flywheel housing-to-engine bolts, and remove housing. Loosen pressure plate-to-flywheel

bolts alternately and evenly (one turn at a time) in a diagonal pattern until spring pressure is

released. Remove pressure plate and clutch disc. See Fig. 4 .

20. To continue transmission removal, position chain hoist around driveline assembly while

protecting exhaust hangers on driveline support. Raise transmission with hoist to remove

weight from transmission jack. Remove transmission support fixture from transmission jack

only. Place transmission/driveline assembly on workbench with hoist still attached. Ensure

adequate support is placed around assembly on workbench. Remove hoist from driveline.

21. Remove transmission-to-driveline bolts and studs. Using flat-blade screwdriver, pry

driveline support assembly away from transmission. Slowly slide driveline support assembly

away from transmission while guiding shift rod through opening in driveline support

assembly. Using a drift or punch, remove roll pin securing shift rod to shift shaft. Remove

shift rod. Remove differential-to-transmission bolts. Slowly separate differential from

transmission. If necessary, remove support fixture fromtransmission.

Inspection

1. Clean oil, grease, metal deposits, etc. fromflywheel mating surfaces. If flywheel or pressure

plate runout is greater than .050" (1.27 mm), flywheel and pressure plate must be replaced.

Inspect flywheel for cracks, heat marks, warpage or other damage. Slight surface scoring

can be removed with sandpaper. Replace or resurface as necessary.

2. Check pressure plate for warpage, heat marks (Blue in color) and cracks. Check diaphragm

spring fingers for uneven height and wear at throw-out bearing contact area. Replace

pressure plate if excessively worn or damaged. Replace clutch disc if runout is greater

than .020" (.51 mm). Check pilot bearing rotation. If roughness is felt or bearing does not

CAUTION:

Replace flywheel and pressure plate as a set if either has burn

damage, heat check damage, or runout exceeds specification.

Flywheel can be resurfaced only to clean up superficial

scoring.

2001 Chevrolet Corvette

2000-01 CLUTCHES Corvette

2005 MitchellRepair Information Company, LLC.

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