Page 510
APPENDIX
TORQUE WRENCH USE
When tightening a fastener, it is important to use
a steady pull on the torque wrench. Only in this
way can accurate torque values be achieved. If
the torque value required cannot be obtained with
the existing torque wrench, a longer wrench
should be used. Dial indicator-type torque
wrenches can be used accurately when an
extension is added to the handle to gain more
leverage. With most click-type torque wrenches,
however, accuracy can be obtained only if the
point of pull remains at the center of the hand grip
area. Therefore, no handle extension can be
used with most click-type torque wrenches,
unless the tool is designed and calibrated for this
purpose.
Using an Adapter in Combination
with a Torque Wrench
It is sometimes necessary to use an adapter at
the drive end of a torque wrench. When an
adapter is attached to the square drive end of a
dial indicator-type torque wrench, the dial reading
(compared to the actual torque applied) will be
affected if the leverage length of the torque
wrench is increased. A correction factor is then
needed to achieve an accurate dial reading.
In the example that follows, a torque wrench with
a working length of 20 inches and an adapter with
a working length of 2 inches are used in
combination. The correction factor is obtained as
follows:
1. Divide total length “A” by torque wrench
length “B”.
Example:
—
Total Length A = 20 in.
—
Torque Wrench Length B = 18 in.
—
A
÷
B = 20 in.
÷
18 in. = 1.1 (Quotient)
589
Figure 589 — Torque Wrench with Adapter
A. Total Length (Torque Wrench Plus Adapter)
B. Torque Wrench Length
5-111.bk Page 510 Monday, July 10, 2006 2:26 PM
Summary of Contents for ASET AC
Page 6: ...TABLE OF CONTENTS Page iii TABLE OF CONTENTS 5 111 bk Page iii Monday July 10 2006 2 26 PM...
Page 14: ...INTRODUCTION Page 1 INTRODUCTION 5 111 bk Page 1 Monday July 10 2006 2 26 PM...
Page 23: ...Page 10 NOTES 5 111 bk Page 10 Monday July 10 2006 2 26 PM...
Page 96: ...COMPONENT LOCATOR Page 83 COMPONENT LOCATOR 5 111 bk Page 83 Monday July 10 2006 2 26 PM...
Page 99: ...Page 86 NOTES 5 111 bk Page 86 Monday July 10 2006 2 26 PM...
Page 100: ...TROUBLESHOOTING Page 87 TROUBLESHOOTING 5 111 bk Page 87 Monday July 10 2006 2 26 PM...
Page 140: ...MAINTENANCE Page 127 MAINTENANCE 5 111 bk Page 127 Monday July 10 2006 2 26 PM...
Page 153: ...Page 140 NOTES 5 111 bk Page 140 Monday July 10 2006 2 26 PM...
Page 383: ...Page 370 NOTES 5 111 bk Page 370 Monday July 10 2006 2 26 PM...
Page 479: ...Page 466 NOTES 5 111 bk Page 466 Monday July 10 2006 2 26 PM...
Page 480: ...SPECIFICATIONS Page 467 SPECIFICATIONS 5 111 bk Page 467 Monday July 10 2006 2 26 PM...
Page 505: ...Page 492 NOTES 5 111 bk Page 492 Monday July 10 2006 2 26 PM...
Page 513: ...Page 500 NOTES 5 111 bk Page 500 Monday July 10 2006 2 26 PM...
Page 519: ...Page 506 NOTES 5 111 bk Page 506 Monday July 10 2006 2 26 PM...
Page 520: ...APPENDIX Page 507 APPENDIX 5 111 bk Page 507 Monday July 10 2006 2 26 PM...
Page 528: ...INDEX Page 515 INDEX Index fm Page 515 Monday July 10 2006 2 48 PM...
Page 535: ...Page 522 NOTES Index fm Page 522 Monday July 10 2006 2 48 PM...