20
www.imo.se
AC
F/
U
C
F5 2
01
9.
12 e
n-
G
B
, I
D
-N
o.
: 1
63
-0
44
/B
J.
• Loosen the bolts 451 and remove the front-
cover 504 with its o-ring 506 from the pump
body 401.
M.
▪
Remove
the cylindrical spring loaded pin 429a with a
suitable puncher.
▪
Unscrew the tuning piston 429 counter-clock-
wise from the cover 4420.
K.
• Carefully slide the idle rotors out of the Pump
body.
• Loosen the bolts 425 and pull the complete tun-
ing device straight upwards.
N.
▪
Change o-ring 437 on the tuning piston 429 and
mount it in 4240 in reverse order.
L.
▪
Unscrew the valve counter clockwise as far as
possible in order to re le ase the spring tension
before commencing any works with valve as the
spring tension otherwise can cause personal
injury
▪
Loosen the 4 bolts 455 & 455a in order to pull
out the complete valve insert.
▪
Reassemble in opposite order.
▪
Loosen the 8 bolts 453 in order to remove the
back cover 480.
▪
Reassemble in opposite order.
www.northridgepumps.com
