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Repair
28 311321H
Install Mixing Module
1. Install safety stop; leave in OPEN position.
2. Connect air supply to gun.
3. Depress gun trigger and slide mixing mod-
ule over end of valving rod.
GX-7 DI model only: ensure valving rod
alignment pin enters alignment slot in gun
block.
Keep gun trigger depressed.
4. With gun trigger depressed, thread mixing
module retainer or PCD body with packing
installed, by hand, and then wrench tighten.
5. Release gun trigger.
6. Install PCD over end of mixing module
retainer.
7. Thread PCD retainer onto gun block. Hand
tight.
8. Rotate flat PCD to adjust orientation as
required.
9. Adjust valving rod. See Valving Rod
Adjustment, page 16.
10.Thread air cap into place; hand tight.
11.Slide safety stop onto rear of air cylinder.
Push safety stop partially forward and
rotate clockwise to set to OPEN.
FIG. 29: Install Mixing Module
CAUTION
To avoid damage to module and gun block,
do not overtighten mixing module retainer.
Module
Front Packing
PCD Body
Retainer O-Ring
PCD Retainer
PCD
Air Cap
Note orientation of
fan tip