Graco 25T991, Instructions - Parts Manual

Page: 17 / 52

Repair
3A8476A 17
SST Switch 3D Gun
Disassembly
The SST Switch 3D Gun can be disassembled after
being removed from the robot. See Removal of SST
Switch 3D Gun From Robot for Repair .
Remove Cover Plates
1. To access SST Switch 3D gun internal parts,
remove side covers (605), top cover (606) and outer
cover (520), by removing screws (519) with a hex
key wrench. See F
IG
. 12.
Remove Electrical Components
1. Disconnect solenoid valve cable connections (617)
from solenoid valves (518).
2. Solenoid valves (518) can be removed from the air
valve manifold (516) by the screws attached to the
solenoid valves.
3. Remove the dual connector bracket (616) with the
dual cable connector (614) attached by removing
the two screws (615)with a hex key wrench.
4. Remove the RTD sensor (609), pressure transducer
(610) and 10mm washer seals (607) if equipped.
Washer seals should be replaced with new ones
before reassembly. See F
IG
. 13.
Remove the Material Inlet Block
1. Remove customer supplied inlet fitting and 1/2 in.
BSPP washer seal (603).
2. Take off the SST single inlet adapter (602) by
removing the four M5 SHCS screws (601) with a
hex key wrench.
3. Discard packing Viton O-ring (613) and replace with
a new one when reassembling. See F
IG
. 14.
NOTICE
Materials dispensed by the SST Switch 3D Gun are
extremely abrasive, harden quickly and the parts must
be thoroughly cleaned before or during any
disassembly and repair or damage can occur to
components.
F
IG
. 12
606
605
605
520
519
F
IG
. 13
F
IG
. 14
615
616
607
518
617
614
609
610
601
602
603
Customer supplied
inlet fitting
613