Park Tool TW-2 - Manual

Park Tool Co. www.parktool.com
TW-1 & TW-2 Torque Wrench
© 2012 Park Tool Co. / ® PARK TOOL and the color BLUE are registered trademarks of Park Tool Co.
TORQUE WRENCH
TW-1 (0 – 60 Inch Pounds/ 0 – 7 Newton Meters)
TW-2 (0 – 600 Inch Pounds/ 0 – 70 Newton Meters)
To prevent over tightening and under tightening of bolts and nuts, specific torque specifications are
provided by most bicycle component manufactures. TW-1 and TW-2 Torque Wrenches accurately
measure the amount of torque (turning or twisting force) being applied to a bolt or nut.
CALIBRATION
The pointer tip of the TW-1 and TW-2 should line up with the “0” on the scale plate. It should also
“float” over the scale plate, without contact. If this is not the case, simply bend the pointer near the
head of the wrench until the pointer tip is in the correct position. Bending the pointer will not damage
the wrench or impact its accuracy.
TORQUE WRENCH USE
1.
Install desired wrench bit (not included) onto square head of torque wrench. The TW-1 accepts
1 ⁄
4
” drive bits and 3 ⁄
8
” drive bits (with the included adapter). The TW-2 accepts 3 ⁄
8
” drive bits.
2. Place bit and wrench onto bolt or nut to be tightened.
3. Grasp handle of torque wrench. NOTE: The TW-2 uses a pivoting handle for greater
accuracy. When using the TW-2, grasp handle so that force is balanced at the pivot point
(Figure 1). Accuracy is affected if other parts of the handle contact the beam while in use.
4. Turn wrench on bolt or nut with steady pressure until tip of pointer reaches the desired torque
on the scale plate. The bolt or nut should be in motion when the final torque reading is made
on the scale plate.
IMPORTANT INFORMATION
1 . Clean threads and remove burrs from bolts and nuts before assembly. Lubricate threads with
appropriate grease, oil or anti-seize lubricant for proper tightening and accurate torque reading.
Do not lubricate bolts or nuts using a nylon or “Nylok” thread fitting.
2 . If flexible adapters or crow-foot extensions are used, re-calculate
the needed torque using the formula:
Torque (T) = Force (F) x Distance (D).
3 . Torque wrenches are precision tools. Store carefully to
avoid damage. Any defacement of the beam will impact
the accuracy of the wrench and result in failure.
For additional information on torque concepts, specifications,
conversion tables, and torque wrench use:
www.parktool.com
Right
Richtig
Bon
Posición correcta
Wrong
Falsch
Mauvais
Posición incorrecta
(Figure 1) - TW-2 handle only
(Bild 1) - Nur TW-2 handgriff
(Figure 1) - Poignée du TW-2 uniquement
(Figura 1) - Solo maneral del TW-2
Head
Kopf
Tête
Cabeza
Square Drive
Vierkantaufnahme
Embout carré
Acoplador para Dado
Pointer
Zeiger
Pointeur
Indicador
Beam
Hebelarm
Bras de levier
Barra
Scale Plate
Skalenblatt
Plaque graduée
Escala
Handle
Handgriff
Poignée
Maneral Pivot point
Drehgelenk
Point de pivot
Punto del Pivote
To Convert To Multiply by
Inch Pounds Foot Pounds 0.08333
Inch Pounds Newton Meters 0.113
Inch Pounds Centimeter Kilograms 1.1519
Foot Pounds Inch Pounds 12
Foot Pounds Newton Meters 1.356
Foot Pounds Centimeter Kilograms 13.825
Newton Meters Inch Pounds 8.85
Newton Meters Foot Pounds 0.7376
Newton Meters Centimeter Kilograms 10.2
Centimeter Kilograms Inch Pounds 0.8681
Centimeter Kilograms Foot Pounds 0.07233
Centimeter Kilograms Newton Meters 0.09807
TORQUE CONVERSION FORMULAS