2) Sprag Clutch Dismantling - Rotax MMH-912 Series Maintenance Manual

3.6.2)
Fig. 72-12
6
Fig. 72-13
Effectivity 912/914 Series
Edition 1 / Rev. 0
BRP-Rotax
Maintenance Manual
Sprag clutch dismantling
See Figs. 72-12 and 72-13.
Carry out a visual inspection to check whether oil sludge has been
deposited in the sprag clutch housing (5) and in in the lock (16). For
inspection/cleaning purposes, remove the circlip (14). Compress the
circlip (19) in the sprag clutch (17) slightly with circlip pliers and twist the
sprag unit out of the sprag clutch housing. Clean all parts thoroughly.
The circumferential helical spring (15) must not be loose or distorted to
a wavy form. Replace sprag clutch as required.
The cams (16) of the sprag clutch must move freely and the surface
must be free of damage. Inspect the engaging surfaces of the sprag
clutch in the sprag clutch housing.
If wear can be measured on the internal contact surfaces of the sprag
clutch housing, the affected parts must be replaced. Check the tapered
surface (18). Check the geartooth system (12), the engaging surface
of the sprag clutch (11) on the free wheel gear and the bearing bushing
(13).
00237
12
11
15
00238
14
13
15 16
19
20
5
17
18
72-00-00
page 17
May 01/2007