9) Drive For Hydraulic Governor Reassembly - Rotax 912 Series Maintenance Manual

14.4.9)
7
00258
3
fig. 141
Effectivity: 912 Series
AIRCRAFT ENGINES
MAINTENANCE MANUAL II
dimension
See para 15.
Drive for hydraulic governor reassembly
See fig. 141, 142 and 143.
Installation of needle sleeve and ball bearing as described in para 14.4.6.
Grease new O-ring Q and insert it together with oil inlet flange W into
crankcase. Take care that both M6 threads are horizontal and the opening
is in a position to let the oil pass. For better positioning tighten governor
flange only slightly with 2 Allen screws M6x20 and oil inlet flange with 2
Allen screws M6x16.
Fit extractor E, part no. 877 615, onto crankcase, place press-in tool R
877 590 into roller bearing T, place it on centering Y and press it with
spindle U fully into crankcase. Fit circlip in groove with its sharp edge
towards outside.
The oil inlet flange W must be fitted well aligned and the
CAUTION:
O-ring Q must not be squeezed.
Remove governor flange I again. Fit distance sleeve O and new O-ring
P 32x4 into crankcase. Insert one each O-ring { 7x2 into the oil inlet
flange and governor flange, keeping them in position with some multi-
purpose grease LZ. Fit governor flange and fix it with 4 Allen screws }
M6x20 with LOCTITE
M6x16 on oil inlet flange.
CAUTION: Longer screws would damage the oil inlet flange!
NOTE: Tightening torque 10 Nm (90 in.lb). Secure the 2 Allen
screws for oil inlet flange and the 4 Allen screws for the
governor flange with LOCTITE
Install hydraulic governor w and new gasket e with 3 Allen screws r
M8x40 and 1x M8x35 with lock washers , tighten to 22 Nm (195 in.lb). Take
care that teeth engage.
Fit screw t M8x35 on left side, bottom.
NOTE:
Install oil pressure line y free of stress on governor
flange and on oil pump housing and with hose clamp on
fuel pump.
6
The banjo screws tighten to 17 Nm (150 in.lb).
2
4
5
1
new
221 on the crankcase and 2 Allen screws q
®
wear limit
®
221.
page 93
Initial issue, Jan. 01/2002