Graco PCF Instructions And Parts page 70

Repair
Repair Fluid Regulator
For complete cartridge fluid regulator repair refer to
instruction manual 308647. For complete mastic fluid
regulator repair refer to instruction manual 307517.
See F . 52 and perform the following steps.
IG
NOTICE
Carefully handle the hard carbide parts ball, valve
actuator, and valve seat to avoid damaging them.
1. Prepare Fluid Plate Assembly for Repair, page
66.
2. Remove the cartridge assembly by loosening the
valve housing (CE) with a 6 mm hex wrench and
pulling the cartridge assembly out of the base hous-
ing (CD).
Cartridge Regulator 244734 Shown
diaphragm
and valve
actuator
subassembly
F . 52: Replace Cartridge Assembly
IG
70
NOTE: The retaining nut (CC) often loosens when
removing the cartridge assembly from the base
housing. Be sure to re-torque as described in step 4.
3. Inspect and clean the internal walls of the base
housing (CD).
NOTE: Be careful to not scrape or gouge the internal
walls of the base housing. They are a sealing sur-
face.
4. Re-torque the retaining nut (CC) to 140-160 in-lb
(16-18 N•m).
NOTE: You must re-torque the retaining nut before
you install it in the base housing during step 5.
5. Install the new cartridge assembly in the base hous-
ing (CD), and torque the valve housing (CE) to
30-35 ft-lb (41-48 N•m).
NOTE: The valve seat is double sided and may be
reversed for extended life. The o-ring and ball must
be replaced. See instruction manual 308647.
cartridge
assembly
CD
Torque Sequence for Regulator
Base Housing Screws (CF)
4
CC
CE 2
1
CF
3
313377B