Service
Reassembly
1.Fig. 6. Clean threads of displacement rod (1) and piston housing (16). Replace u–cup seals (14) and spacers (15). Reassemble piston nut (13) and lockwasher (12).
2.Place flats of piston seat housing (16) in vise. Tighten displacement rod and piston nut from 20 to 27 NSm (15 to 20 ft–lb).
3.Install seal (8) on cylinder (9). Lubricate seal and threads.
4.Fig. 5. Install throat bearing (5) and u–cup seal (4) into wet cup (2). Install seal (8) onto wet cup. Lubricate seals and threads.
5.Install wet cup into outlet housing (7), hand tight.
6.Fig. 6. Lubricate u–cup seals (14) and insert piston/displacement rod into cylinder (9).
7.Install cylinder, first by sliding displacement rod (1) up through outlet housing (7) and wet cup (2), then engage cylinder threads into outlet housing and hand tighten.
8.Replace intake ball (17) and ball stop (3) into intake valve (19). Install seal (8) on intake valve. Lubricate seal and threads.
9.Install intake valve into cylinder and hand tighten.
10.Place outlet housing into vise. Using an adjustable wrench, tighten the wet cup from 41 to 54 NSm (30 to 40 ft–lb).
11.Tighten the cylinder from 41 to 54 NSm (30 to 40 ft–lb) and the intake valve from 41 to 54 NSm (30 to 40 ft–lb).
12.Reconnect the displacement pump to the air motor as detailed in Reconnecting the Displacement Pump on page 12.
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