8) Drive For Propeller Governor - Removal - Rotax 914 F Maintenance Manual

14.4.8) Drive for propeller governor - removal

See Pic. 223 and 224.
2
Pic. 223
4
4
00256
7
8
16
14
13
14
00257
dimension
See Chapter 15).
Modification no.
- 0 -
Remove banjo bolt Q M10x1 and both sealing rings W
from governor flange E and oil pump housing and
1
withdraw oil hose. Remove 4 Allen screws M6x20 R
and 2 Allen screws T M6x16 for oil inlet flange fixation.
Remove governor flange with O-ring and distance sleeve
behind.
After removal of propeller gearbox the drive can be
3
disassembled. Fix drive sleeve Y with holder 242 660.
Remove Allen screw M8x16 U and vacuum pump gear
I with drive sleeve O. Remove countersunk screw P
4
M5x12 with washer for ball bearing fixation.
Press out needle bearing { and ball bearing } with
suitable step punch towards gearbox.
4
NOTE:
damaged by this procedure and must be replaced.
5
5
12
Visually check ball bearing } and roller bearing r.
10
Pic. 224
Reference
Needle bearing and ball bearing will be
Check inner diameter q of propeller shaft and
journal w of oil inlet flange. The wear will prob-
ably appear as a flat area on the journal. Check
teeth of drive gear and vacuum pump gear I.
ATTENTION: The attachment screw
U M8 of vacuum pump gear for hy-
11
draulic governor drive is r mm long
9
(.63 in.) and with a low screw head. For
vacuum pump drive, however, it is only
14 mm long (.55 in.) with standard
screw head.
Clean parts carefully and remove seal-
ant residues. Check sealing surface
and all oil bores in governor flange E
for free passage. Visually check nee-
dle bearing { as well as teeth and
bearing surface of drive sleeve O. En-
sure clean connecting face for oil pres-
sure hose.
If service work is necessary on the pro-
peller governor, it must be sent to the
engine manufacturer.
11
new
Main
914 F
wear limit
Date
Page
1997 02 01
239