Service
308647T 15
Replacing the Cartridge
See Fig. 3, and follow the steps below. For parts that
are not called out in Fig. 3, see Parts, starting on page
16.
1. Prepare Equipment for Service. Follow steps on
page 13.
2. Remove the cartridge assembly by loosening the
valve housing (5) with a 6 mm hex wrench and
pulling the cartridge assembly out of the base
housing (4).
NOTE: The retaining nut (3) 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 (4).
NOTE: Be careful that you do not scrape or gouge
the internal walls of the base housing, because they
are sealing surfaces.
4. Re-torque the retaining nut (3) to 140 to 160 in-lb
(16 to 18 N•m).
NOTE: You must re-torque the retaining nut
before you install it in the base housing in step
5.
5. Install the new cartridge assembly in the base
housing (4), and torque the valve housing (5) to 30
to 35 ft-lb (41 to 48 N•m).
NOTE:
The valve seat (14) is double sided and
may be reversed for extended life. The o-rings
(15, 18 and 20) and ball (16) must be replaced.
NOTICE
Handle the hard carbide parts, which are the ball
(16), valve actuator (1), and valve seat (14), carefully
to avoid damaging them.
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