FAA Approved Installation Manual for the
Report No 908
EDM-900 and EDM-930
Page 29 of 56 Rev I
Primary Engine Data Management System
Date 1-18-2013
28.
RPM Sensor installation
Use the J3 connector harness 790420 and connect the 3 leads using the supplied 3-pin connector and pins. There are
three types of magnetos commonly in use. You must have the correct RPM sensor for the magneto installed in the
aircraft. The following part numbers apply: Slick -4000, -6000 use JPI P/N 420815. For the Bendix -1200 use P/N
420815. Dual magnetos use JPI PN 420810. Mount the sensor as shown in the appropriate diagram below.
S lic k
M a g n e to s
M o u nt s e n so r s id e o f b ra ck e t tow a rd s
re v M a r 2 0 0 4
B e n d ix
M a g n e to s
B e n d ix 1 2 0 0 s e rie s
p re s s u rize d
J P I 4 2 0 8 0 7
C o n n ec to r to h a rn e ss
e
n
g
in
e
A ltern a te b rac k e t lo c a tio n s
TO
P
po s ition lim it
po s ition lim it
M o u n t s e n s or s id e o f b ra ck e t to w a rd s
m a g n eto b o d y, p o s itio n e d o v e r th e m a gn e t
a rm a tur
e
C o n ne c to r to h a rn es s
S lic k 6 0 0 0 , 4 0 0 0 s e rie s
n o n -p re s s u riz e d
J P I 4 2 0 8 1 5 -1
e
n
g
in
e
C o n ne c to r to h a rn es s
S lic k 6 0 0 0 , 4 0 0 0 s e rie s
p re s s u rize d
J P I 4 2 0 8 0 9
e
n
g
in
e
T
O
P
S e n so r rin g m u n te d u n d e r ve n t p lu g .
S te m a t rig h t a n gle s to m a g ne to c en te r line
m a g n e to
b o d y
A ltern a te b rac k e t lo c a tio n
V en t p lu g
S pa c e r ring
S e n s or rin g bra c k e t
M ag n e to b o d y
e
n
g
i
n
e
S lic k 6 0 0
s e rie s
S e n s or m u s t b e
ov e r
m o v ing m a g ne t
arm a tu re
R e m o ve th is
s cre w
to m o u n t
s e n so r
b ra ck
et
B e n d ix -2 0 , -2 1 , -2 0 0 , 1 2 0 0 s e rie s
n o n -p re s s u rize d
J P I 4 2 0 8 1 5 -2
C o n n ec to r to h a rn e ss
e
n
g
in
e
B e n d ix D u a l
M a g n e to
e
n
g
in
e
M o u nt s e n so r s id e o f b ra ck e t tow a rd s
m a gn e to
b od y
TO
P
R P M S IG G R N
R P M G N D B L K
R P M P W R R E D
1
