August 2008
95-03076
Page 19
Waukesha Cherry-Burrell
Maintenance
Outer O-ring Replacement
1. Remove the valve stem assembly from the actuator and slide the adapter off
the outer stem.
2. Slide or cut the outer o-ring (Figure 17, item C) off the adapter. Do not nick
or scratch the o-ring groove.
3. Lubricate the new o-ring with grease and install it.
Tri Ring Seat Replacement
1. Remove the Tri Ring seat by carefully cutting or using an o-ring tool to pull
the seat out of the groove. Do not scratch or nick the metal seating surface.
2. Clean the Tri Ring groove after removing the seat.
3. Lubricate the new Tri Ring (Figure 18, item A) with an acceptable cleansing
solution or lubricant.
4. Place the stem through a 1-1/8 inch (30 mm) hole bored through a board,
secured by a vise.
5. Start the Tri Ring as shown in Figure 18.
6. Using the installation tool, part number 102797 (Figure 18, item B), press
the Tri Ring into the plug at locations A, B, C, and D (Figure 19). If the tool
is not used, DO NOT use a knife or any other sharp item that will tear or cut
the Tri Ring.
7. To finish installation, press small sections of the seal, alternating from side
to side (A-B-C-D), avoiding large loops of seal.
8. When properly installed, the Tri Ring seat lip will protrude slightly from the
seat edge as shown in Figure 18.
Figure 19 - Pressing Tri Ring Into Plug
Figure 18 - Installing New Tri Ring Seat