Graco Python A25177 Instructions Manual page 34

Chemical injection pump
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Repair
16. Place the timing valve knob (122) over the needle
valve (117), with the "0" lined up with the marker on
the label (121). Tighten the hex set screws (123).
121
F
. 26 Align timing valve knob with label
IG
17. Reinstall the drive piston (107) in the bottom of the
upper housing (110).
NOTE: Do not apply grease to the dynamic seals (105 &
108). They are designed to operate without grease.
18. Reinstall the seal cartridges (see F
order of the seals (105) and o-rings (124)) into the
lower housing (101). Apply a thin coat of grease on
34
Marker
122
. 23 for the
IG
the housing lead-in (130) to ease installation and
ensure that the seals are not damaged.
Lead-in
F
. 27 Reinstall seal cartridges and spool
IG
19. Reinstall the spool (103) carefully through the seal
cartridge components.
103
125
102 (w/105 & 124)
130
3A4386C

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