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Repair
309518P 25
FIG. 20
627
639*†
*† 637
626
*† 638
628
630†
645*†
644†
645*†
646
647
621
621
622
*
† 632
631
623
*† 633
† 635
624
*† 643
625
629
636
1. Apply pipe sealant to non-swiveling pipe threads.
2. Apply lubricant to threads, o-rings, and seals.
Apply medium anaerobic adhesive. Thread to bottom.
Torque to 5-7 ft/lbs (7-9 N•m).
Torque to 30-40 ft/lbs (41-54 N•m).
Tighten packing nut 1/4 turn after nut bottoms out; 145-155 in/lbs
(16-18 N•m). Check packing nut tightness about once a month.
Keep packing nut filled with TSL.
Lubricate and press piston evenly into cylinder.
Clean needle (630) and packing cavity before reinstalling
packings (637*, 638, 639*). Lubricate packings and install with
lips facing up toward packing nut (627) in order shown.
Whenever the seat housing (646) is removed, replace the o-rings
(645).
Inspect reversible seat for damage. If one side is worn, reverse
seat.
3
4
5
6
7
8
9
10
4
5
4
6
3
4
7
8
8
8
*† 634
8
9
9
10
9
5