Clarke CHT204 User Manual

Clarke CHT204 User Manual

3/8” square drive torque wrench

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3/8" SQUARE DRIVE TORQUE WRENCH
Thank you for purchasing this CLARKE Torque Wrench.
This torque wrench is designed to tighten nuts with precision. It should NOT be used for UNDOING nuts, as severe damage
could occur. With correct use, this tool will produce an accuracy of plus or minus 4%. You can hear and feel when the
desired torque setting has been reached. With careful and considerate use, the wrench will give years of reliable service.

GUARANTEE

This product is guaranteed against faults in manufacture for 12 months from purchase date. Keep your
receipt as proof of purchase. This guarantee is invalid if the product has been abused or tampered with in
any way, or not used for the purpose for which it is intended. The reason for return must be clearly stated.
This guarantee does not affect your statutory rights.

OPERATION

A. Torque Setting Adjustment

The main body is marked in both Inch Pounds (in lbs), and Metre Kilograms (Mkg).
The barrel is marked with 20 graduations, one graduation = 12 in lbs or 0.14 Mkg.
Example: To set the torque to 492 in lbs
1.
Ensure the lock nut is loosened, by turning it anti-clockwise. Turn the knurled handle until one of the
the zero marks on the chamfered scale is exactly in line with the next lowest graduation on the linear
scale on the main body - in this case it would be 480. (only one of the zero marks will line up correctly)
2.
As the desired setting is higher than 480, continue to turn the knurled handle, one more graduations.
(one graduation equals12 in lbs). Therefore 480+12=492 in lbs
3.
Finally, tighten lock nut to secure the setting.

B. Method of Use

Note: Preferably, DO NOT use knuckle or universal joints, as these could result in incorrect torque settings.
1.
Place the square drive on to the socket or extension bar, perpendicular to the nut/bolt to be tightened.
2.
Gripping the knurled handle with the right hand, whilst steadying the 3/8" square drive end with the
left, gently but firmly, pull the handle (i.e. in a clockwise direction) until a click is heard, and a slight
'break' in the handle is felt. IMPORTANT! DO NOT turn any further.
1. Do not jerk the torque wrench in any way to tighten a nut. Apply even pressure throughout the operation.
2. Release the wrench immmediately the click is heard/felt.
3. It should be noted that the 'click' becomes weaker with the lower torque settings.

ACCESSORIES

1.
1/2" Square Drive, x 5" Extension bar.
2.
1/2" x 3/8" Square Drive adaptor.
3.
Carrying Case
MODEL: CHT204
IMPORTANT
0504

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Summary of Contents for Clarke CHT204

  • Page 1 MODEL: CHT204 0504 Thank you for purchasing this CLARKE Torque Wrench. This torque wrench is designed to tighten nuts with precision. It should NOT be used for UNDOING nuts, as severe damage could occur. With correct use, this tool will produce an accuracy of plus or minus 4%. You can hear and feel when the desired torque setting has been reached.
  • Page 2 = 13.887in oz 1dNm 14.161in oz 1kg cm = 0.08677in lbf 8.8507in lbf 1kgm = 7.233ft lbf 0.73756 ft lbf 1kg cm = 0.098Nm 1kg cm 9.80665 Nm Clarke International, Hemnall St., Epping, Essex CM16 4LG: Service Tel: 020 8988 7400...

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