OUTLINE, TROUBLESHOOTING GUIDE

H-4spec table

B6 DOHC paired with F25M-R transaxle; K8 DOHC paired with G25M-R transaxle. Clutch disc dimensions differ between engines; most other specs shared.

Continued from H-3

SPECIFICATIONS

Clutch specifications by engine model

Item	Sub-item	Unit	B6 DOHC / F25M-R	K8 DOHC / G25M-R
Clutch control			Hydraulic	Hydraulic
Clutch cover	Type		Diaphragm Spring	Diaphragm Spring
Clutch cover	Set load	N {kgf, lbf}	4,316 {440, 968}	4,316 {440, 968}
Clutch disc	Outer diameter	mm {in}	200 {7.87}	225 {8.86}
Clutch disc	Inner diameter	mm {in}	130 {5.12}	150 {5.91}
Clutch disc	Thickness — Pressure plate side	mm {in}	3.8 {0.150}	3.8 {0.150}
Clutch disc	Thickness — Flywheel side	mm {in}	3.5 {0.138}	3.5 {0.138}
Clutch pedal	Type		Suspended	Suspended
Clutch pedal	Pedal ratio		6.31	6.31
Clutch pedal	Full stroke	mm {in}	130 {5.12}	130 {5.12}
Clutch pedal	Height (with carpet)	mm {in}	199—204 {7.83—8.03}	199—204 {7.83—8.03}
Master cylinder	Inner diameter	mm {in}	15.87 {0.625}	15.87 {0.625}
Release cylinder	Inner diameter	mm {in}	19.05 {0.750}	19.05 {0.750}
Clutch fluid			FMVSS116 DOT-3	FMVSS116 DOT-3

Clutch control

Sub-item

Unit

B6 DOHC / F25M-RHydraulic

K8 DOHC / G25M-RHydraulic

Clutch cover

Sub-itemType

Unit

B6 DOHC / F25M-RDiaphragm Spring

K8 DOHC / G25M-RDiaphragm Spring

Clutch cover

Sub-itemSet load

UnitN {kgf, lbf}

B6 DOHC / F25M-R4,316 {440, 968}

K8 DOHC / G25M-R4,316 {440, 968}

Clutch disc

Sub-itemOuter diameter

Unitmm {in}

B6 DOHC / F25M-R200 {7.87}

K8 DOHC / G25M-R225 {8.86}

Clutch disc

Sub-itemInner diameter

Unitmm {in}

B6 DOHC / F25M-R130 {5.12}

K8 DOHC / G25M-R150 {5.91}

Clutch disc

Sub-itemThickness — Pressure plate side

Unitmm {in}

B6 DOHC / F25M-R3.8 {0.150}

K8 DOHC / G25M-R3.8 {0.150}

Clutch disc

Sub-itemThickness — Flywheel side

Unitmm {in}

B6 DOHC / F25M-R3.5 {0.138}

K8 DOHC / G25M-R3.5 {0.138}

Clutch pedal

Sub-itemType

Unit

B6 DOHC / F25M-RSuspended

K8 DOHC / G25M-RSuspended

Clutch pedal

Sub-itemPedal ratio

Unit

B6 DOHC / F25M-R6.31

K8 DOHC / G25M-R6.31

Clutch pedal

Sub-itemFull stroke

Unitmm {in}

B6 DOHC / F25M-R130 {5.12}

K8 DOHC / G25M-R130 {5.12}

Clutch pedal

Sub-itemHeight (with carpet)

Unitmm {in}

B6 DOHC / F25M-R199—204 {7.83—8.03}

K8 DOHC / G25M-R199—204 {7.83—8.03}

Master cylinder

Sub-itemInner diameter

Unitmm {in}

B6 DOHC / F25M-R15.87 {0.625}

K8 DOHC / G25M-R15.87 {0.625}

Release cylinder

Sub-itemInner diameter

Unitmm {in}

B6 DOHC / F25M-R19.05 {0.750}

K8 DOHC / G25M-R19.05 {0.750}

Clutch fluid

Sub-item

Unit

B6 DOHC / F25M-RFMVSS116 DOT-3

K8 DOHC / G25M-RFMVSS116 DOT-3

TROUBLESHOOTING GUIDE

Clutch troubleshooting guide

Problem	Possible Cause	Action	Page
Slipping	Clutch disc facing worn excessively	Replace	H-16
Slipping	Clutch disc facing surface hardened or oil on surface	Repair or replace	H-16, 19
Slipping	Pressure plate damaged	Replace	H-16
Slipping	Diaphragm spring damaged or weakened	Replace	H-16
Slipping	Insufficient clutch pedal play	Adjust	H-6
Slipping	Clutch pedal sticking	Repair or replace	H-7
Slipping	Flywheel damaged	Repair or replace	H-16, 20
Poor disengagement	Excessive runout or damaged clutch disc	Replace	H-16
Poor disengagement	Clutch disc splines rusted or worn	Remove rust or replace	H-16
Poor disengagement	Oil on facing	Repair or replace	H-16, 19
Poor disengagement	Diaphragm spring weakened	Replace	H-16
Poor disengagement	Excessive clutch pedal play	Adjust	H-6
Poor disengagement	Insufficient clutch fluid	Add fluid	H-5
Poor disengagement	Leakage of clutch fluid	Locate and repair or replace	—
Vibration of clutch when accelerating	Oil on facing	Repair or replace	H-16, 19
Vibration of clutch when accelerating	Torsion dampers weakened	Replace	H-16
Vibration of clutch when accelerating	Clutch disc facing hardened or damaged	Repair or replace	H-16, 19
Vibration of clutch when accelerating	Clutch disc facing rivets loose	Replace	H-16
Vibration of clutch when accelerating	Pressure plate damaged or has excessive runout	Replace	H-16
Vibration of clutch when accelerating	Flywheel surface hardened or damaged	Repair or replace	H-16, 20
Vibration of clutch when accelerating	Loose or worn engine mount	Tighten or replace	—
Clutch pedal sticking	Pedal shaft not properly lubricated	Lubricate or replace	H-7
Abnormal noise	Clutch release collar damaged	Replace	H-16
Abnormal noise	Poor lubrication of release collar sleeve	Lubricate or replace	H-16
Abnormal noise	Torsion dampers weakened	Replace	H-16
Abnormal noise	Excessive crankshaft end play	Repair	Refer to section B1, B2
Abnormal noise	Pilot bearing worn or damaged	Replace	H-16, 20
Abnormal noise	Worn pivot points of release fork	Replace	H-16

Slipping

Possible CauseClutch disc facing worn excessively

ActionReplace

PageH-16

Slipping

Possible CauseClutch disc facing surface hardened or oil on surface

ActionRepair or replace

PageH-16, 19

Slipping

Possible CausePressure plate damaged

ActionReplace

PageH-16

Slipping

Possible CauseDiaphragm spring damaged or weakened

ActionReplace

PageH-16

Slipping

Possible CauseInsufficient clutch pedal play

ActionAdjust

PageH-6

Slipping

Possible CauseClutch pedal sticking

ActionRepair or replace

PageH-7

Slipping

Possible CauseFlywheel damaged

ActionRepair or replace

PageH-16, 20

Poor disengagement

Possible CauseExcessive runout or damaged clutch disc

ActionReplace

PageH-16

Poor disengagement

Possible CauseClutch disc splines rusted or worn

ActionRemove rust or replace

PageH-16

Poor disengagement

Possible CauseOil on facing

ActionRepair or replace

PageH-16, 19

Poor disengagement

Possible CauseDiaphragm spring weakened

ActionReplace

PageH-16

Poor disengagement

Possible CauseExcessive clutch pedal play

ActionAdjust

PageH-6

Poor disengagement

Possible CauseInsufficient clutch fluid

ActionAdd fluid

PageH-5

Poor disengagement

Possible CauseLeakage of clutch fluid

ActionLocate and repair or replace

Page—