1) To recalibrate a torque wrench, first zero the scale by adjusting it to its lowest point without any spring pressure. 2) Remove the protective plug and locking washer using special tools to access the adjustment nut. 3) Use a nut spinner tool to adjust the nut clockwise to increase torque or counterclockwise to decrease torque until the desired calibration values are achieved.

1. How to recalibration torque?
(Professional torque tester)

2. Before disassembling torque
wrench scale must “zero＂
Adjust to lowest point …
without any spring pressure!

3. Remove protect plug
1.Screwdriver + special bit
2.Circlip pliers

4. Use 17mm socket open
flange nut

5. Use magnetic pickup take out
locking washer

6. Use 6mm nut spinner
to adjust torque

7. Clockwise:
tight (increase torque)
Counterclockwise:
loose (decrease torque)

8. After recalibration…
before torque testing
put back “washer + nut＂

9. Put on tester, without
ratchet gap, make test
easier.

10. Use gradienter make machine
and torque wrench in position
before operate.
Force point middle of handle

11. Torque testing (20~200NM)
20% 19.20~20.80
60% 115.20~124.80
100% 192.00~208.00
CW+-4% CCW+-6%
PS. adjust lowest point at high value.
(close to 20.80) Torque testing 3 times better.

12. Do it again until set the
value in correct.
Before disassembling torque
wrench scale must “zero＂

13. If cannot reach torque few times,
(click sounds) suggest renew the
“pawl＂

14. Put back protect plug

15. Factory electronic torque tester with
computer layout system