30
© SPX
Form No. 1000528
Rev. 1 December 2, 2011
Install a new o-ring seal onto the piston plug, and insert it into the piston. Install the internal circlip to 4.
retain the piston plug in position.
Install a new o-ring seal onto the endcap and instal it into the body. Tighten the endcap using a pin 5.
spanner.
Test the operation of the hydraulic torque wrench by connecting to the appropriate pump unit. 6.
Keeping hands clear of the torque wrench, advance and retract the torque wrench several times,
and observe the movement of the shuttle mechanism to check for fee and correct movement. Apply
full pressure to the torque wrench (690 bar (10,000 psi) advance; 103 bar (1,500 psi) retract), and
check for leaks.
Replace the torque wrench guard.7.
Following stripdown and/or lubrication, the hydraulic torque wrench should be calibrated to verify that
the torque output is within specied limits.
Repair Procedures continued
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