ISUZU KB P190 2007 Workshop Repair Manual

CLUTCH 7C-3
GENERAL DESCRIPTION
PUSH TYPE CLUTCH (MSG and MUA)




PULL TYPE CLUTCH (MUX)

RTW 77CSF000601

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7C-4 CLUTCH
The clutch assembly consists of the pressure plate, the clutch cover, the diaphragm spring pivot pin and the driven
plate assembly.
The clutch pedal is connected to the release bearing through the shift fork.
The driven plate assembly is installed between the flywheel and the pressure plate.
For models with MSG transmission and MUA transmission, the push-type clutch is used.
Diaphragm spring pressure holds the driven plate against flywheel and the pressure plate to provide the friction
necessary to engage the clutch.
Depressing the clutch pedal moves the shift fork against the release bearing.
The release bearing forces the diaphragm to overcome the force of the diaphragm spring and separate the driven
plate from the flywheel and pressure plate to disengage the clutch.
For model with MUX transmission, the pull-type clutch is used. The pull-type clutch is disengaged by pulling the
release lever (release bearing) to disengage the pressure plate.


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CLUTCH 7C-5
MASTER CYLINDER
C24SE (MUA) /RHD



RTW 47CSF000501

C24SE, 4J series (MSG, MUA) /LHD



RTW 47CSF000201


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7C-6 CLUTCH
4JK1 (High Output) (MUA) /RHD, 4JJ1 (High Output) (MUX)



RTW 77CSF000101

4JK1-TC, 4JJ1-TC, 4JA1-T (MSG, MUA) /RHD



RTW 47CSF000401
The master cylinder converts mechanical energy into hydraulic energy.
Depressing the clutch pedal causes the push rod to move against the piston to close the return port.
Clutch fluid is forced out of the master cylinder.
Releasing the clutch pedal causes the return spring to force the piston back to its original position.
The return port is opened and the clutch fluid flows back into the fluid reservoir.
Quickly releasing the clutch pedal will cause the fluid pressure at the return spring side to be lower than the fluid
pressure at the push rod side.
This allows the fluid at the push rod side to quickly flow to the return spring side through a port in the piston head.
This equalizes the pressure at both sides of the piston.


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CLUTCH 7C-7
SLAVE CYLINDER
4JJ1 (High Output) (MUX)

RTW 77CSF000701
4J series (MSG, MUA)

C24SE (MUA)



RTW 47CSF000301
The slave cylinder converts hydraulic energy into mechanical energy.
Hydraulic fluid supplied by the master cylinder moves the slave cylinder piston to actuate the shift fork.
The mechanical energy produced by the slave cylinder is directly proportional to the diameters of the master
cylinder and the slave cylinder.
A bleeder screw is provided to bleed the slave cylinder.

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7C-8 CLUTCH
The Clutch Damper Valve is installed in the slave cylinder for MUX.
The Clutch Damper Valve delays return speed of clutch fluid when clutch is being engaged quickly at Low or
Reverse, and decreases a shock torque transmitted to drive train.

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CLUTCH 7C-9
HYDRAULIC DAMPER CYLINDER








RTW 77CMF000401

The hydraulic damper cylinder is installed between the master cylinder and the slave cylinder to smooth out
variations in clutch pedal feel.


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7C-10 CLUTCH
PRESSURE PLATE ASSEMBLY
4JJ1 (High Output) (MUX)

A07RS006

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CLUTCH 7C-11
4JA1-T (MSG)



RTW 47CMF000101

4J series (MUA)



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7C-12 CLUTCH
C24SE (MUA)
RTW 37CMF000101

The pressure plate assembly consists of the clutch cover, the pressure plate with diaphragm spring.
Operating the clutch pedal causes the pressure plate to move in an axial direction to engage and disengage the
clutch.



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