This document discusses clutches, brakes, and their maintenance. It defines a clutch as a device that transmits power between driving and driven shafts, and a brake as a device that produces resistance to slow or stop motion. It describes common types of clutches like centrifugal, friction, jaw, and overrunning clutches. It also describes common brake types like disc and drum brakes. Finally, it outlines procedures for clutch and brake maintenance like cleaning friction surfaces, replacing worn parts, adjusting for proper torque loads, and following manufacturers' adjustment procedures.

1. NAMA : MUHAMMAD ASYRAF BIN MAZLAN
NO MATRIK : 14DKM18F1122
NAMA PENSYARAH : ZAHRIN BIN TOKIJAN
CHAPTER 5: CLUTCHES AND BRAKES

2. WHAT IS CLUTCH ?
CLUTHES IS USED TO TRANSMIT THE POWER FROM DRIVING SHAFT TO
DRIVEN SHAFT OF MACHINE WHICH MAY BE REQUIRED TO START OR
FREQUENTLY.

3. WHAT IS BRAKES?
A BRAKE IS A MECHANICAL DEVIDE WHICH PRODUCES
RESISTANCE AGAINST MOVING MACHINE MEMBER, IN ORDER TO
SLOW DOWN THE MOTION OF MACHINE.

4. FUNCTION OF CLUTHES AND BRAKES?
CLUTHES
• TRANSMIT POWER
BETWEEN TWO SHAFT
BREAKES
• ABSORB KINETIC ENERGY
OF THE MOVING BODIES
AND CONVERT IT TO
HEAT

5. ASSEMBLE & DISSEMBLE CLUTHES AND BRAKES
ASSEMBLE CLUTCH & BRAKES DISSEMBLE CLUTCH AND
• INSTALL THE FLYWHEEL
• CLEAN THE FLYWHEEL AND PRESSURE
PLATE FRICTION SURFACE WITH
LACQUER THINNER OR ACETONE
• POSITION THE CLUCTH DISK AND
PRESSURE PLATE AGAINST THE
FLYWHEEL WITH THE CLUCTH HLD IN
PLACE WITH AN ALIGNMENT TOOL
• MAKE SURE THE CLUCT DISK IS INSTALL
PROPERLY
• LOOSELY START THE SIX MOUNTING
BOLT IN THE FLYWHEEL
• INSTALL THE CLUTCH RELEASE BEARING
IF REMOVED
• REINSTALL THE ENGINE
• REMOVE THE ENGINE FROM THE CAR
• SCRIB OR PAINT ALLIGNMENT MARKS
ON THE PRESSURE PLATE AND THE
FLYWHEEL
• THEN LOOSEN THE PRESSURE PLATE TO
FLYWHEEL BOLTS BY TURNING EACH
BOLT
• CLEAN THE FRICTION SURFACE ON THE
FLYWHEEL AND INSPECT IT FOR WEAR ,
CRACKS, HEAT CHECKIN, GROOVES AD
OTHER OBVIOUS DEFECT

6. MECHANICAL
HYDRAULIC
ELECTRIC

7. MECHANICAL
CENTRIFUGAL CLUCTH
 COMMONLY FOUND IN
APPLICATION WHERE
IS DESIRABLE TO HAVE
EITHER NO LOAD
STARTING OR
PROTECTION AGAINST
OVERLOAD
 CAN ALSO FUNCTION
AS COUPLINGS OR CAN
BE MOUNTED DIRECTLY
TO v-BELT
FRICTION CLUCTH
 WIDELY USED IN
INDUSTRY (AUTOMOTIVE
INDUSTRY)
 CAN BE ACTUATED OR
OPERATED MANUALLY,
PNEUMATICALLY AND
HYDRAULICALLY.
JAW CLUCTH
 USUALLY USED ON SLOW SPEED
APPLICATIONS
 MOTION FOR ENGAGING AND
DISENGAGING THE CLUTCH IS
ACCOMPLISHED WITH A SHIFTING ARM
OVERRUNNING CLUCTH
 ALSO KNOWN AS ONE-WAY
CLUTCHES
 FREQUENTLY USED ON MACHINE
WHERE THE DRIVING MOTOR OR
MEDIA REQUIRES PROTECTION
 PREVENT OVER SPEEDING OF
DRIVE BY ALLOWING FREE
ROTATION OF THE DRIVE
COMPONENT
TORQUE LIMITING CLUCTH
 USED ON ANY NUMBER OF
PIECES OF EQUIPMENT OR ALSO
WITH ROLLER CHAIN TYPR

8. HYDRAULIC
 ABLE TO START UNDER HEAVY
LOADS AND ABSORB SHOCK
LOADS
 PROVIDE A SMOOTH FLOW OF
POWER TO THE DRIVEN SIDE OF
MACHINE
 DRIVE HALF OF A FLUID
IS ACTUATED BY THE HYDRAULIC
FLUID

9. ELECTRIC
 USED WHERE INTERMITTENT MOTION
REQUIRED
 A MAGNET OR OIL IS MOUNTED ON
DRIVEN COMPONENT OR MACHINE
 ARMATURE PLATE IS MOUNTED ON A
DRIVING MOTOR OR SHAFT
 WHEN TWO PART DE-ENERGIZED, NO
CONTACT OR ACTION TAKES PLACE
BETWEEN THEM

10. TYPES OF BREAKS
DISC BRAKE
• The disc brake is a mechanism for
or stopping the rotation of a wheel from
its motion. A disc brake is normally made
of cast iron, but in some cases, it is also
made of composites such as carbon-
carbon or ceramic -matrix composites.
This is linked to the wheel and/or the
To stop the wheel, friction material in the
form of brake pads is forced against both
sides of the disc. Friction caused, on the
disc wheel will slow or stop.
DRUM BRAKES
A drum brake is a traditional break in
which the friction is caused by a set of
shoes or pads that press against a
rotating drum-shaped part called a brake
drum.
The term "drum brake" usually means a
brake in which shoes press on the inner
surface of the drum. Where the drum is
pinched between two shoes, similar to a
standard disk brake , it is sometimes
called a "pinch drum brake", although
such brakes are relatively rare

11. CLUTCH AND BRAKE
MAINTENANCE PROCEDURE
OIL OR CONTAMINANT ON FRICTION
SURFACES
-CLEAN OR REPLACE THE SURFACES
WORN OUT FRICTION COMPONENT
-CHECK THE COMPONENT TO SEE IF THEY
ARE WITHIN TOLERANCES
-REPLACE THEM IF NECESSARY
WORN LINKAGE OR PARTS USED IN
ENGAGING CLUCTH OR BRAKE
-CHECK FOR OBSTRUCTION AND
CORROSION ON MOVING PARTS
-CLEAN OR REPLACE THE PART AS
NECESSARY
TOO MUCH TORQUE
-BECAUSE OF POOR INITIAL SELECTION OF
A CLUCTH OR BRAKE
-THE CLUCTH OR BRAKE SHOULD BE
REPLACED WITH ONE DESIGNED FOR THE
INCREASED TORQUE LOADS REQUIRED
HIGH-FREQUENCY CYCLING OR HIGH-
INERTIA LOADS
-CHANGING TO A CLUTCH OR BRAKE WITH
GREATER HEAT-DISSIPATIONABILITY
-SHORTENING THE SLIPPING TIME DURING
START-UP CAN ALSO REDUCE HEAT
IMPROPER ADJUSTMENT OF CLUCTH AND
BRAKE
-FOLLOW THE MANUFACTURE'S
ADJUSTMENT PROCEDURES