Rotax 914 F - 8) Drive for Propeller Governor - Removal

Reference
Modification no.
- 0 -
Page
239
Date
1997 02 01
Main
914 F
01480
14.4.8) Drive for propeller governor - removal
See Pic. 223 and 224.
Remove banjo bolt Q M10x1 and both sealing rings W
from governor flange E and oil pump housing and
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
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
M5x12 with washer for ball bearing fixation.
Press out needle bearing { and ball bearing } with
suitable step punch towards gearbox.
◆ NOTE: Needle bearing and ball bearing will be
damaged by this procedure and must be replaced.
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.
Visually check ball bearing } and roller bearing r.
■ ATTENTION: The attachment screw
U M8 of vacuum pump gear for hy-
draulic governor drive is r mm long
(.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.
dimension new wear limit
See Chapter 15).
5
5
Pic. 223
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13
7
Pic. 224
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16
8
12
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00257
00256
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