Electric Starter - Rotax 912-UL Repair Manual

6.2L.4) Obscrvation of the oil temperature
For placing a temperature sensor, a tapped hole M10 is provided in the oil pump
housing, beside the oil filter. Pick-up and indicating instrument are the same as used
for cylinder head temperature.
6.21.5) Monitoring of oil pressure
The connection for thc oil pressure indication is located on the oil pump; a tapped hole
U8" - 27 NPT for pressure pick-up VDO 360.081/0291012
is on the right side of the
oil pump. Suitable pressure gauge 0 - 10 bar (0 - 145 psi), VDO 3501271/03U007.
6.22) Electric starter
After dis-assembly of starter check the following:
Armaturc: Visual inspection, check for
straightness. Clean commutator
and if need be, slightly machine
and undercut segments (see r//.
63). The insulation should start
0,5 mm (0,02 ") below face of
segments.
A WARNING:
During this machining process, asbest particles are set free and could
possibly be inhaled. Therefore the undercutting
is prohibited, according to environ-
mental law.
Check armature, using 12 or 24 V test lamp, for short i1:-:r',1:i{,_:::*.
circuit between :umature plates O and commutator O.
+r::r::rr.
If lamp lishts up. exchanse a,,natu*. d##;.i"
::-$il::
If lamp lights up, exchange annature. Check armature =,,,...--
-"'-',=.'.=.r-.
coils for intemrption, utilizing 2 or 4 V supply onA *S;:..fi
interconnected ampere-meter. The armature has to be
renewed, if the ampere readings differ essentially be-
tween single segments. Inspect ball bearing 6N22. At
renewal, fit with closed side towards middle of annature. Inspect toothing and radial clearance.
Bearings:
Inspect needle cage llx2lxl2and bearing sleeve in commutator housing.
Renew as necessary.
Carbon brushes: Must be freely moving. Renew too short brushes (min. length 8 mm =
O,32"). Check spring pressure, renew hot-run brush springs.
O-rings:
Renew
Starter housing: Visual control of inner magnets for cracks.
ROTAX
Rm:i:912:UL-