Hawk-industries Hawkjaw Jr. Manual 65K-2GJR Serial Numbers 10 to 2 Manuel d'utilisateur télécharger pdf (Page 57)

Changing the Grip Cylinders

Maintenance

& Repair

Initial Steps

Middle Grip Cylinder

1. Make sure the HawkJaw is off the

drill pipe connection and in the rest

position on the derrick.

2. Shut down the Hydraulic power

unit.

3. Press, push, and pull all control

buttons repeatedly to bleed

hydraulic pressure.

4. Disconnect the Air power supply.

5. Assume that there is still a load on

every actuator. Proceed with

caution.

1. Adjust the Middle Wrench (MW)

to 3 1/2".

2. Unhook the retract springs (RS)

on the middle wrench using a pair

of pliars or vice grip pliars.

3. Swing the entire middle wrench

assembly out toward the left of the

unit

Maintenance & Repair 57

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Hawk-industries Hawkjaw Jr. Manual 65K-2GJR Serial Numbers 10 to 2 Manuel d'utilisateur Page 57