Mooney Series 20 Relief Valve Instruction Manual | 17
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Lubricate with
Petroleum Oil
Grease such as
LUBRIPLATE
No. 105®
Figure 21
Installing the Spring with lubricated Spring Follower
6. PILOTS WITH PLATED, BLUE, AND PURPLE SPRINGS:
Install Closing Cap with Adjusting Screw and Sealing Nut
and O-Ring.
Figure 22
Installing the closing cap assembly for Pilot with the Red,
Plated, Blue, and Purple Springs
7. PILOTS WITH BLACK AND GREEN SPRING: Install
Closing Cap with Adjusting Screw, Spacer, Sealing Nut, and
O-Ring. The spacer prevents the Black and Green springs
from being over compressed.
Figure 23
Installing the closing cap assembly with spacer (to prevent
spring over compression) for Pilots with the Black and
Green Springs.
Figure 24
The Plug and Stem Assembly
Figure 25
8. Refer to Figure 22 & 23. Stack the following parts on the
Bottom Cap in the order shown in the drawing: Return
Spring, Stem Guide, Orifice Spring, Orifice, Orifice O-Ring,
Back-Up Washer, Plug and Stem
NOTE: The plug on the stem will be ABOVE the Orifice
Assembly for Relief (BPV) Mode.
9. Lubricate both Body Insert O-Rings with Parker O-Lube®
(or equivalent Petroleum based Lubricant) and install on
Body Insert (Cartridge).
10. Body Insert Assembly: Lift Bottom Cap complete with valve
mechanism assembly and insert into Body Insert. The Orifice
Spring should snap the Orifice into place as the Bottom Cap
is screwed into place. Check the assembly by pushing the
Stem against a hard surface to make sure it moves freely
and returns to the extended position.
11. Measure the Stem Extension: should be .45” (11.43mm)
12. Lubricate Stem O-Ring with Parker Super-O-Lube® (or
equivalent Silicon Lubricant) and slip over Stem.
13. Insert Body Insert into Pilot Body and screw into place
snugly.
