HET 4 Clutch Fundimentals And Service Flashcards
What do spring loaded clutches do
Connect the Flywheel to the Input shaft
Smooth engagement
Spring loaded Push type clutch
Releases bearing moves towards engine during disengagement
Light duty trucks
Spring loaded Pull type clutch
Releases bearing moves towards transmission during disengagement
Medium to Heavy duty trucks
2 Types of Flywheels
Flat
Countersunk
Clutch covers can be made of?
Cast Iron
Steel stamping
Function of Clutch Cover
1) Drive pressure plate
2) Contain pressure springs
3) Mount pressure plate assembly to flywheel
3 types of pressure springs used to apply force to pressure plate
1) Perpendicular coil
2) Angled coil
3) Diaphragm
3 Drive members in a clutch assembly
1) Flywheel
2) Intermediate plate
3) Pressure plate/Clutch cover
Why are clutch discs of the dampened design?
To absorb torsional shock/Impact loads during engagement
Clutch release bearing purpose
Minimize release lever wear
When are clutch brakes fully applied?
Only when shifting into 1st from a standstill
4 clutch problems caused by operators
1) Riding clutch (foot on peddle)
2) Taking off in high gear
3) shifting without clutch
4) Improper use of clutch brake
Safety precautions prior to transmission removal
1) Disconnect battery
2) use proper lifting equipment
3) stay out of line of fire
Is a torque pattern necessary for removing and installing clutch components?
Yes, especially if the clutch is still hot/warm
T/F
A normal clutch will lose clamping load when lining material wears
True
T/F
Adjustment for wear is made by the toothed slide
True
Spring controlled centrifugal clutch’s allow for engines to
Idle without engagement
