Repair/Service; Install The Diaphragm Repair Kit - Graco 17W739 Instructions-Parts List Manual

Repair/Service

Repair/Service
Repair/Service Repair/Service
Install the the Diaphragm Diaphragm Repair
Install Install the Diaphragm
The Diaphragm Repair Kit (17X733) is available
and can be ordered separately. See the Parts List
footnote in Parts, page
Follow the Pressure Relief Procedure, page 10
fore you check or service the surge suppressor or
remove the surge suppressor from the system. All
fluid and air pressure must be relieved completely
before you attempt any service.
Disassemble Disassemble the Disassemble the the Surge Surge Suppressor Surge
1. Follow the Pressure Relief Procedure, page 10
relieve fluid and air pressure.
2. Disassemble the air housing.
a. Remove the cap screws (14) and lock
washers (23)
b. Separate the air cover (13) from the piston
housing (6). Be careful that you do not
damage the machined flange surfaces or
components attached to either housing.
c. Use a 10 mm socket driver to loosen the
piston assembly (P). Unscrew and remove
the piston assembly (P) from the piston
housing (6)
12
Repair Kit Kit
Repair Kit
14.
Suppressor Suppressor
3. Disassemble the piston assembly (P).
a. Clamp the shaft (8) on the flats in a vise.
b. Unscrew the retaining screw (12).
c. Separate the shaft (8), screw (12), and piston
(9).
d. Inspect the o-ring (11). Replace if necessary.
be-
4. Reassemble the piston assembly (P).
a. Install the o-ring (11) into the piston (9), and
apply grease.
b. Press the retaining screw (12) into the piston
(9) by hand.
c. Hand thread the shaft (8) onto the screw (12).
d. Clamp the shaft (8) on the flats in a vise, and
to
torque the screw (12) to 75-85 ft-lb.
5. Disassemble the fluid housing.
a. Remove the cap screws (22).
b. Separate the fluid cover (1) from the piston
housing (6).
c. Remove the diaphragm (2), diaphragm plate
(17), and washer (3).
d. Inspect the L-cup seal (5), bearings (4), and
o-rings (16, 10). Replace if necessary.
3A6103A