309668
13
Service
Replacing the Air Valve
Tools Required
D
Torque wrench
D
Phillips screwdriver
D
O-ring pick
NOTE:
Air Valve Kit 239952 is available. Parts
included in the kit are marked with a dagger, for exam-
ple (2
{
). A tube of general purpose grease (26
{
) is
supplied in the kit. Install the kit as follows.
WARNING
To reduce the risk of serious injury whenever you
are instructed to relieve pressure, always follow the
Pressure Relief Procedure
on page 9.
1.
Relieve the pressure.
2. Unscrew the six mounting screws (15) and remove
the air valve (A) from the pump. See Fig. 5.
3. Refer to the Valve Plate Detail in Fig. 5. Remove
the two screws (10) holding the valve plate (13) to
the pump. Use an o-ring pick to remove the valve
plate, seal (12), and bearing (9).
4. Apply grease (26
{
) to the bearing (9
{
). Install the
bearing and the seal (12) in the pump housing (1).
Install the valve plate (13) and secure with the two
screws (10
{
), as shown. Torque the screws to
5 to 7 in-lb (0.6 to 0.8 N-m).
5. Make certain the o-ring (19
{
) is in place on the air
valve cover (2
{
).
6. Apply grease (26
{
) where shown in Fig. 5.
7. Align the new air valve assembly so the reset shaft
(21
{
) is at the top. Install the valve on the pump,
making sure the valve saddle (14
{
) engages the
recessed area on the diaphragm shaft (23). Install
the six screws (15) and torque oppositely and
evenly, to 8 to 14 in-lb (0.9 to 1.6 N-m).
Summary of Contents for 234192
Page 29: ...309668 29 Notes...
