Hartzell HC-D2MV20-3 Series Owner's Manual And Logbook page 109

(j) Install the diaphragm and the inner ring.
Refer to Figure 3-8.1.
wARnIng:
1 Align the centerline of the diaphragm with
the centerline of the cylinder and position the
diaphragm flush against the cylinder.
a
2 Position the flat side of the inner ring flush
against the diaphragm.
3 Align the mounting holes in the inner ring with the
holes in the diaphragm and cylinder.
4 Install the screws (Table 3-1) through the inner
ring and diaphragm and thread into cylinder.
CAuTIon:
5 using a staggered sequence, tighten all of the
inner ring screws slightly, then repeat until the
diaphragm squeezes out past the inside edge of
the inner ring 0.062 inches (1.57 mm).
INSTALLATION AND REMOVAL
Propeller Owner's Manual
Do not AlIgn The TAB on The
DIAPhRAgM wITh The VAlVe
ASSeMBly MounTIng SuRFACe
on The CylInDeR. ThIS wIll
PReVenT The DIAPhRAgM FRoM
SeATIng PRoPeRly AnD MAy
CAuSe The DIAPhRAgM To FAIl.
FAIluRe oF The DIAPhRAgM CAn
quICkly ReSulT In CoMPleTe
loSS oF engIne oIl AnD RAPID
engIne ShuTDown wITh oIl
CoVeRIng The wInDSCReen
CReATIng An unSAFe
ConDITIon ThAT may Result
In Death, seRIous boDIly
InjuRy, anD/oR substantIal
pRopeRty Damage.
The centerline is identified by locating the four
holes that align. Refer to Figure 3-8.1.
The RIng MAy BReAk IF only A
Few SCRewS ARe TIghTeneD In
A loCAlIZeD AReA.
140
61-00-40
Rev. 3 Feb/14
Page 3-45