© SPX FLOW, Inc.
Form No. 1000623
Rev. 6 Jan. 10, 2017
Repair Procedures continued
12. Test the operation of the torque wrench by
connecting to the appropriate pump unit. Keeping
hands clear of the wrench, advance and retract the
wrench several times ensuring the drive mechanism
functions correctly. Apply full pressure to the wrench
(690 bar/10,000 psi advance; 103 bar/1500 psi
retract), and check for leaks.
NOTE: If the hydraulic couplings were removed,
verify that they are installed into the correct yoke.
The male coupling/nipple assembles into the ad-
vance yoke (A) and the female coupling assembles
into the retract yoke (R). Apply hydraulic thread
sealant to the hydraulic coupling thread before as-
sembly. Thread sealing tape should not be used as
debris from the sealing tape can contaminate the
system.
Hydraulic Cylinder Disassembly
It is only necessary to remove the hydraulic cylinder/
body components if seal replacement is required.
1. Verify the torque wrench is fully retracted. Disconnect
the power supply.
2. Attach open ended couplings to the swivel manifold
couplings to vent any residual pressure.
3. See Figure 19. Unscrew the endcap using a pin
spanner.
4. Remove the drive assembly as described in section
‘Drive Component Disassembly’.
5. See Figure 20. The piston assembly can be
withdrawn from the rear of the body by pushing the
end of the piston rod.
6. Remove and discard the piston seal and the rod
seal located in the centre of the body.
Figure 19. Endcap Removal
Figure 20. Piston Removal