Graco 25T991, Instructions - Parts Manual

Page: 20 / 52

Repair
20 3A8476A
SST Switch 3D Gun Assembly
NOTE : Before assembly, It is recommended to have
Yearly Service Kit, 25U328 on page No. 38. Make sure
parts are thoroughly cleaned. Refer to the fastener
torque settings in the
Technical Specifications on
page No. 50. Suitable lubricant and thread locking
compound should also be available.
Swivel Housing Assembly
NOTE: For general sequence of swivel housing
assembly refer to F
IG
. 20.
NOTE: Medium strength thread locker used for this
assembly is Loctite
®
242 or equivalent. Anti seize
lubricant used for this assembly is Loctite
®
77164 or
equivalent.
1. Insert support ring (510) into the larger bore end of
the swivel housing assembly (511) until the support
ring is square against the internal shoulder.
2. Apply a thin coat of lithium grease onto the outside
of the O-ring on the rotary seal (508). To prevent
damage to the Rotary seal O-ring insert into the
bore of the swivel housing (511) at an angle. Make
sure that the O-ring does not tear against the inlet
opening and push the rotary seal against the
support ring (510). See side view F
IG
. 25.
3. Insert material distributor ring (509) into the bore of
the swivel housing (511). It is recommended to use
the
Material Seal Insertion/Removal Tool,
17V972 on page No. 39 and a soft faced mallet.
Push the material distribution ring (509) and rotary
seal (508) fully to the bottom of the bore.
F
IG
. 20
501
502
503
507
510 504
506
505
509
508
511
502
F
IG
. 21
511
508
510