Replacing Cooling Jacket - Haskel Q-Drive QGD Series Installation, Operation And Maintenance Manual

Q-Drive Installation, Operation, and Maintenance Manual

Replacing Cooling Jacket

1. Disconnect the tubing or pipes from the inlets and from the outlets.
2. Cap all the open ports to prevent contamination.
3. Loosen the Tie Rods on the Gas Sections but do not remove. Refer to the tightening
sequence. Use the same sequence to loosen, but in increments of 100 ft-lbs (135 Nm).
4. Loosen the Check Valves from the End Caps but do not remove.
5. Remove the End Caps. Use a rubber mallet if necessary.
6. Inspect the barrel for scratches and changes in the polish. Burnishing discoloration is normal.
For scratches deeper than fingernail depth, plan to replace the barrel. Consult a Haskel
representative for instructions.
7. Remove the Barrel.
8. Remove the Cooling Jacket from the Adapter Piece. Save the O-ring from the adapter.
9. Set aside the barrel assembly and cover it until you reassemble.
10. Remove the snap ring.
11. Pull out the barrel from the jacket.
12. Inspect the O-rings for the barrel. Plan to replace them if necessary.
13. Apply a thin layer of all-purpose grease to the O-rings housed in the grooves.
14. Clean and lubricate the O-ring with all-purpose grease.
15. Attach the site's coolant line to the system's coolant inline port.
16. Insert Barrel assembly to the Adapter Piece.
17. Reassemble the Gas Section, according to "Reassembling the Gas Section."
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