Graco A Series Repair Manual page 8

Fig. 18. Mark IV: Install o-ring (231) on sleeve spacer
(230) and install sleeve spacer on sleeve.
ti7340a
230
231
Fig. 18
Fig. 19. Reassemble intake valve with new o-ring
(227), seat (212) and ball (214). Seat may be flipped
over and used on other side. Clean seat thoroughly.
214
212
227
Fig. 19
Fig. 20. Install intake valve on cylinder. If a wrench is
used torque as follows:
67 +/--5 ft-lb (Model 248204, 253056, 255968,
277069)
80 +/--5 ft-lb (Model 248205, 249057, 249059,
277070, 257146 )
If a wrench is not used, be sure intake valve is bot-
tomed out against cylinder.
8 310643
Service
Fig. 20
Fig. 21. Torque packing nut (202) down onto adjust-
ment spacer (228) 100 +/--10 in-lb.
Remove throat adjustment spacer (228) when pump
packings begin to leak after much use. Then tighten
packing nut down until leakage stops or lessens. This
allows approximately 100 gallons of additional opera-
tion before a repacking is required.
7570f
Fig. 21
202
228
7569A
7568A