TORQUE WRENCHES & FEELER GAUGES

WHAT IS TORQUE?

• TORQUE IS THE TURING OR TWISTING FORCE WHICH MAY OR MAY NOT RESULT IN MOTION

WHAT DOES A TORQUE WRENCH DO?

• MEASURES HOW MUCH TORQUE (TWISTING FORCE) IS BEING APPLIED TO A BOLT OR NUT.

3 REASONS TO USE A TORQUE WRENCH (ON TOOL TEST)

• SO YOU DON’T UNDER-TIGHTEN A BOLT OR NUT– COME LOOSE AND CAUSE A PART TO FAIL OR COME

OFF

• SO YOU DON’T OVER-TIGHTEN A BOLT OR NUT– STRESSES THE PART WHICH CAN BREAK OR WORSE

YET, FAIL LATER

• TO GET A SERIES OF BOLTS OR NUTS THE SAME TIGHTNESS– PREVENT BENDING OR WARPING

UNITS OF MEASURE

• A TORQUE WRENCH MEASURES IN (ON TOOL TEST)

– INCH POUNDS

– FOOT POUNDS

USCS (UNITED STATESCUSTOMARY SYSTEM)

12 INCH POUNDS = 1 FOOT POUND

UNITS OF MEASURE IN METRIC SYSTEM

• NEWTON METERS (Nm)

• KILO GRAMS (KG)

TORQUE WRENCHES TYPES

BEAM TYPE($25 TO $175)

DIAL TYPE($150 TO $700)

MICROMETER FEEDOR CLICKER TYPE($75 TO $400)

TORQUE WRENCHES SIZES

• ALL THREE TYPES COME IN:– DIFFERENT SOCKET DRIVE SIZES

• 1/4”

• 3/8”

• 1/2”

• 3/4”

TALKED ABOUT ORWILL TALK ABOUTDURING SOCKETS

THESE ALL COMEIN BOTH INCH &FOOT POUNDS

TORQUE WRENCH MAINTENANCE

• DON’T DROP, JAR, OR HAMMER WITH

• TURN DOWN THE MICROMETER FEED TYPE WHEN FINISHED– IF YOU STORE IT TURNED UP, THE

SPRING LOOSES IT’S TENSION

• NEEDS TO BE SENT IN TO BE CALIBRATED EVERY SO OFTEN

HOW TO USE DEFLECTING BEAM

• HOLD ON THE HANDLE

• STEADY PULL OR PUSH

80 INCH LBS

HOW TO USE MICROMETER FEED

• TURN UP HANDLE TO DESIRED TORQUE

• LOCK HANDLE IN PLACE• HOLD ON THE HANDLE• STEADY PULL OR PUSH

UNTIL YOU FEEL AND HEAR A CLICK

• STOP AFTER CLICK

30 INCH LBS

HOW TO USE DIAL TYPE

• HOLD ON THE END OF HANDLE

• STEADY PULL OR PUSH

• WATCH DIAL AS YOU PULL UNTIL YOU REACH THE DESIRED TORQUE

FEELER GAUGES

FEELER GAUGES

• EXACT THICKNESS STRIPS OF METAL OR WIRE

• USED TO MEASURE BETWEEN TWO OBJECTS TO EXACT SIZE

CHECKING VALVE TAPPET LASH

JOB SHEET #8 STEP 7

FEELER GAUGE THICKNESS

HALF THE THICKNESS OF A PIECE OF PAPER (.002”)

THICKNESS OF A PIECE OF PAPER

(.004”)

CAN BE ADDED TOGETHER

SAFETY

• THE THIN FEELER GAUGES CAN BE SHARP

• THEY TEAR EASILY

MAINTENANCE

KEEP CLEAN & DRY

KEEP LIGHTLY OILEDTO PREVENT RUSTINGDURING STORAGE

FEELER GAUGE VARIATIONS

ANGLED FEELER GAUGES

STEPPED FEELER GAUGESGO NO-GO FEELER GAUGES

TIP .002”SMALLER

THAN BODY

SPARK PLUG (WIRE) FEELER GAUGES

WHY A WIRE FEELER GAUGE FOR A USED SPARK PLUG

NEW

WORN

INCORRECT

CORRECT

APPROXIMATE COST

$5 TO $15DEPENDINGON SIZE

KOOL!I NOW KNOW ALLI NEED TO KNOWABOUT TORQUEWRENCHES ANDFEELER GAUGES!