Graco Dispensit 1093 Operation & Maintenance Manual page 25

Install the Spool Wet Seal Retainer on the Main
Body
3. Install a lubricated o-ring (120) on the side of the
retainer (114).
4. Install two lubricated Posipak seals (121,122) wet
seal retainer (114) so the o-ring side of both Posi-
paks are facing the valve body (107). Be sure to
tuck the lip of the Posipak into its cavity to avoid
tearing it.
5. Position the wet seal retainer upwards with the oil
cup and slide it over the spool part of the
spool/sleeve assembly (116), with the counterbore
for the wet seal retainer (114) facing out. Slide the
wet seal retainer (114) over the spool and install two
screws (129) using adhesive (149) and torque to 27
in-lbs. Install the rod sleeve and connect the motor
and motor coupling assembly.
6. Repeat steps 3, 4 and 5 for the right side seal
plates.
Install the Rod Sleeve and Connect the Motor &
Motor Coupling Assembly
124
102
106
104
7. Lubricate the dispense sleeve bore in the valve
body (107). Insert the rod sleeve (106) into the main
body (107).
8. Place the lubricated o-ring (105) over the rod sleeve
(106) and against the main body (107).
9. With the o-ring slide facing down, carefully slide a
lubricated Posipak seal (104) into the lubricated
seal cup (103).
10. From the head end, insert the assembled Posipak
seal (104) and seal cup (103) onto the lubricated
metering rod (102) and about an inch over the guide
angle.
11. Insert the oil cup retainer (124) over the assembled
seal cup (103), Posipak seal (104) and metering rod
(102).
313566J
126
207
103
12. Place the drive assembly (101), lead screw (217)
and assembled unit in the retract position.
13. Insert the guide rods (206) through the lead screw
connection block (209) and into the oil cup retainer
(124).
14. Pull the metering rod (102) away from the assem-
bled unit and slide it into the key slot in the metering
rod connection block (207).
15. Guide the metering rod (102) and assembled unit
into the rod sleeve (106).
16. Carefully place the seal cup (103), Posipak seal
(104) and oil cup retainer (124) down against the
main body and secure with screws (126).
NOTE: If the motor and motor coupling assembly (219)
was disassembled, follow the reassembly instructions
below before proceeding.
17. Position the motor and motor coupling assembly
(219) above the main body assembly (107) and
bring them together so the guide rods (206) enter
their holes in the drive assembly (101) and the end
of the lead screw (217) seats in the connection
block (209).
18. Install the screws (210) into the connection block
(209) using adhesive (230) and torque to 27 in-lbs.
19. Install screws (208) through the lead screw connec-
tor block (209) into the connection block (207) using
adhesive (230) and torque to 16 in-lbs.
20. Install the 3-slot back tie plate (204) and secure it
with screws (228). Install the clear plastic guards
(226, not shown) so the access hole in the guard is
facing the valve outlet end. Install the front tie plate
(203) and secure it with screws (228).
Mount the Valve End Caps to the Seal Plate Cups
21. Install a lubricated u-cup seal (111) into the groove
on the spool shift piston (112). The piston is thicker
on one side of the groove. The lip of the seal must
be facing the thicker section.
22. Lubricate the bore in the end cap (109). Slide the
spool shift piston (112) into the left end cap (109)
and carefully tuck the lip of the u-cup seal (111) into
the end cap (109). The lip should be facing the end
cap (109) using adhesive (149) and torque to 27
in-lbs.
23. Install the piston/end cap onto the left spool wet
retainer (114) using four screws (108). Tighten the
Rebuild
25