8) Cylinder Heads Reassembly - Rotax 912 Series Maintenance Manual

14.5.8)
4
5
6
M
11
13
Effectivity: 912 Series
AIRCRAFT ENGINES
MAINTENANCE MANUAL II
Cylinder heads reassembly
See fig. 172.
Place valve spring support Q on valve guide and fit new valve stem seal
W (on inlet side only). Insert valve E pre-oiled with motor oil, place inner
and outer valve spring R and spring retainer T in position. Compress
valve springs by utilizing valve spring mounting device and clamp. Insert
valve cotters Y and release springs, see para 14.5.1. Same procedure for
the exhaust valve U.
NOTE: Ensure correct positioning of valve cotters.
1
2
M
C
M
12
8
G-N to rocker arm bore I, push rod head O and
®
Apply MOLYKOTE
valve contact area P.Bring inlet rocker arm { and exhaust rocker arm }
into position, Apply MOLYKOTE
and fit into bearing bores in cylinder head, see para 11.7.18.
NOTE: The rocker arm shaft must slide easily into the bore. Do
not apply force!
Lubricate all internal parts with motor oil and check for easy movement.,
see para 11.7.1.
3
M
04711
C
9
G-N to both sides of rocker arm shaft q
®
7
10
fig. 172
M..... MOLYKOTE G-N M..... MOLYKOTE G-N
C..... LOCTITE 648 C..... LOCTITE 648
page 108
Initial issue, Jan. 01/2002