page 46
July 01/2008
Effectivity: 914 Series
Edition 2 / Rev. 0
d04277
INSTALLATION MANUAL
BRP-Rotax
12.4) Check cooling system - Efficiency of the cooling system
For a measurement of the cooling system the maximum values for coolant exit
temperature and cylinder head temperature must be found. According to the current
specifications.
12.4.1) Measurement of cylinder head temperature and coolant exit tempera-
ture
There are two temperature sensors (1) on the cylinder 2 and 3 for measuring
the cylinder head temperature. During flight test the place with the highest
cylinder head temperature must be found, this can vary with different engine
installation (cowling or free installation, tractor or pusher, fight speed etc.).
Fig. 16
00327
1
Marking of the coolant to be used
■ CAUTION: The coolant to be used and its concentration (percentage water
rate) must be communicated to the owner in the correct form.
Waterless coolant must not mix with water, as otherwise to lose the
advantages of the high boilling point.
DO NOT
ADD
TO THIS SYSTEM
WATER
STOP!
EVANS NPG+
WATERLESS
COOLANT ONLY!
R
E
M
O
V
E
S
L
O
W
L
Y
DO
N
OT
ADD
TO THIS
SYSTEM
WATER
STOP!
EVANS NPG+
WATERLESS
COOLANT ONLY!
T
U
R
N
D
O
W
N
T
I
G
H
T
R
E
M
O
V
E
S
L
O
W
L
Y
DO
NOT
ADD
TO THIS SYSTEM
WATER
STOP!
EVANS NPG+
WATERLESS
COOLANT ONLY!
T
U
R
N
D
O
W
N
T
I
G
H
T
R
E
M
O
V
E
S
L
O
W
L
Y
T
U
R
N
D
O
W
N
T
I
G
H
T
07012
Fig. 15
Example: EVANS NPG+. See Fig. 15.
1 Warning sticker
2 Radiator cap
3 Opening pressure information of radiator cap.
3
1
2
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