BRP-Rotax
Maintenance Manual
72-00-00
page 54
May 01/2007
Effectivity 912/914 Series
Edition 1 / Rev. 0
d02622
0
10
20
30
40
50
60
70
80
90
0.01mm
1
2
3
4
5
6
7
8
9
0
GB18
Position gearbox housing with completely pre-assembled gear unit,
previously coated with sealing compound LOCTITE 574. Turn propeller
shaft slightly to allow the dog gear to engage. By gently tapping on the
gearbox housing (not on the propeller shaft) with a plastic mallet, the
gearbox is fitted on the crankcase.
â—† NOTE: If there is resistance with a gap of approx. 10 mm (0.4
in.), the alignment of the rollers may need readjusting.
Fix the rollers in position again with grease, press them
outwards and / or turn the vacuum pump /governor gear
slightly to allow engagement.
â– CAUTION : If excessive force is applied at assembly, the roller
bearing or the vacuum pump drive can be damaged.
If the sealing surface becomes oily during the assembly process, clean
it and reapply surface sealing compound LOCTITE 574.
Tighten gearbox evenly with 2 allen screws M8x45 and 8 allen screws
(7) M6x45 and lock washers crosswise.
Check the radial gear backlash at the propeller flange (9) with the dial
gauge (8), dimension (GB18). See 72-00-00 sec. 4.
Remove crankshaft locking screw and fit crankshaft plug screw M8 x
20 with new Cu sealing ring and tighten to 22 Nm (195 in.lb). For
verification turn crankshaft with spanner 24 a/f on hex. screw on
magneto side.
07508
Fig. 72-56
7
8
9
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