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53 312028000
1
2
3
4
5
6
Index
No
Part
No Name
1 317965000 Retainer
2 312196000 Spring
3 312419000 Ball
4 312415000 Washer, .300 I.D.
5 312418000 Quad Ring
6 317963000 Body
*Install new ball seat each servicing.
FIGURE 11. LIQUID CHECK VALVE ASSEMBLY
SERVICING CARBONATOR WATER PUMP DOUBLE LIQUID CHECK VALVE
(see Figures 2 and 12)
1. Service water pump water strainer screen before servicing the water pump double liquid check valve.
2. Disconnet carbonator water line from double liquid check valve assembly outlet.
3. Remove double liquid check valve assembly from elbow in water pump outlet port. Retain white tapered
gasket inside (female) end of double liquid check valve.
4. Disassemble each check valve as shown in Figure 11.
5. Wipe each part with a clean lint-free cloth. Inspect each part, especially ball for burrs, nicks, corrosion,
deterioration, and other damage. Discard ball seat and any damaged or suspicious parts and replace with
new parts during reassemble.
6. Reassemble liquid check valves as shown in Figure 11. ALWAYS INSTALL NEW BALL SEAT (QUAD
RING) P/N 312418000.
NOTE: Make sure when assembling check valves together, check to ensure the valve female end (with
white tapered gasket inside) is on inlet side of double liquid check valve assembly.
7. Assemble check valves together. DO NOT OVERTIGHTEN.
8. Make sure white tapered gasket is in place inside female end of double liquid check valve assembly, then
install check valve assembly on elbow in water pump outlet port.
9. Connect carbonator tank water line to double liquid check valve assembly outlet. DO NOT OVERTIGH-
TEN.