Rotax 912-UL Repair Manual

6.15.4)
Re-a-Ssembly
of overload clutch
Apply LOCTITE
Anti-Seize
to sliding
face
(l
of clutch hub
g
and both sides
of
bronze thrust washer
O.
Slide bronze
thrust washer
@ and dog
hub
@ onto clutch hub
@ and feed into
clurch
drum O. Then insert
alternately
9
pre-oiled
steel disks @
and 8
pre-oiled
sinterdisks
O.
Place
thrust ring
and
2
disk
springs L0Ox76x2,7
against each other
into
position
with first
spring centering
on thrust
ring.
For fitting
collar nut,
place
clutch ass'y horizontally
to
prevent
de-centering
of the
outer
disk spring.
Tighten
nut,
using
pin-face
wrench, firstly
to approx. 20 Nm
(180
in.lb.), install
clutch
ass'y
into gearbox
on
propshaft
and
adjust slipping
torque
(consult
chapter 6.15.1, checking
of the slipping
torque).
After
setring of
thg rfif,p#g torque,
secure collar nut
by denting into
the fixing holes
o.
6.15.5)
Assembly
of
gearbox
After heating
up
gear
cover
in
oven to
100o
C
(215"
F), insert
oil seal
40-52-
I from
the
inside,
using
punch
877
275,and
grease
sealing
lips.
Add
distance rin
936/50/5,5
with
roud$gi1$lowards
oil seal. Press in
ball bearing,
utilizing
press-ring
877
320
and
insertion
punch
877
275.Fix
bearing
in
position,
using hardened
washers6,2l78l
2andhex. hd.
ssrews
M6x16
with srength rating
8,8. Secure
screws with LOCTITE
221
andtighten
to
l0 Nm
(90
in.lb.).
Apply
LOCTITE Anti-Seize
to bearing seat
35
mm
(1,41n.)
6
and
press
prop
shaft
into
gear
cover. Don't
tap! Make absolutely
sure to support
the inner ring
of
the
bearing with suitable tube.It would
be an advantage, if
gearcoveris
still warm
at this
stage.
Slide on distance sleeve
35,214218 and eccenter collar for fuel
pump.
From now
on, distinguish clearly between
gearbox
with
orwithout
overload clutch!

Rotax 912-UL Specifications

General

Displacement	1211 cc
Bore x Stroke	79.5 mm x 61 mm
Compression Ratio	9.0:1
TBO (Time Between Overhaul)	2000 hours
Engine Type	4-cylinder, 4-stroke
Power Output	80 hp
Cooling System	Liquid/air-cooled
Fuel Type	Avgas 100LL or unleaded automotive gasoline
Oil Capacity	3 liters
Fuel System	2 carburetors
Oil System	Dry sump forced lubrication with separate oil tank
Reduction Gear Ratio	2.43:1
Max Continuous Power	75 hp (56 kW)