MO DAY YEAR
Champion Aerospace LLC
1230 Old Norris Road
Liberty, South Carolina, U.S.A. 29657
© 2009 Champion Aerospace LLC
www.championaerospace.com
CHAMPION AEROSPACE LLC PROPRIETARY INFORMATION - Subject to the restrictions on the Title page
ISSUED
PAGE REV.
PAGE NO.
REVISED
MO DAY YEAR
01
18
96
L-1502
03
01
09
C
2-12
2.3.2 Install M5340-XX Cylinder Head Temperature (CHT) Probe Assembly
WARNING
:
DO NOT INSTALL LASAR
®
CONTROLLER CONFIGURED WITH THE CHT CONTROL OR
CHT PROBE ASSEMBLY IF THE CYLINDER THAT OPERATES AT THE HIGHEST TEM-
PERATURE DURING FULL POWER, MAXIMUM RATE OF CLIMB CONFIGURATIONS
HAS NOT YET BEEN IDENTIFIED. THIS CYLINDER MAY BE IDENTIFIED USING ONE
OF THE METHODS DETAILED IN PARAGRAPH 2.3.1 OF THIS DOCUMENT.
A.
Remove plug, existing CHT probe, or existing bayonet adapter from the cylinder that was identi-
fied as the hottest cylinder in Paragraph 2.3.1.
B.
Select CHT Probe configuration.
The LASAR
®
controller requires input from a thermistor temperature probe which must be located
in the hottest cylinder. Any CHT probe currently installed in the hottest cylinder must be
reconfigured to fit in an alternate location or replaced by a dual sensor probe which provides
signals to both the LASAR
®
controller and to the existing cockpit instrument. Usually, CHT probes
are either a “J” type which uses white and red wires, or a “K” type which uses yellow and red
wires. Please refer to the CHT instrument manufacturer for information regarding the type of
probe which is being removed. The following descriptions can be used to determine the correct
probe assembly part number required for installation:
Single Point Thermistor Probe Assembly
M5340-01
This probe should be installed when there is no CHT probe installed in the hottest cylinder.
Dual Point Thermistor/”K” Probe Assembly
M5340-02
Install this probe when a “K” type thermocouple is currently installed in the hottest cylinder.
Dual Point Thermistor/”J” Probe Assembly
M5340-03
Install this probe when a “J” type thermocouple is currently installed in the hottest cylinder.
C.
Clean contaminants from cylinder well and threads.
D.
Install M5345 LASAR
®
CHT probe bayonet adapter.
E.
Adjust preload tension and install LASAR
®
CHT probe spring.
1.
Turn LASAR
®
CHT probe locking nut to a position in the center of the spring assembly.
2.
Insert LASAR
®
CHT probe assembly into cylinder well. The tip of the probe should contact
the bottom of the cylinder well.
3.
With LASAR
®
CHT probe in cylinder well, turn the locking nut until slotted end is 3/8 inches
from the end of the M5345 bayonet adapter.
4.
Align locking nut slot and peg on bayonet adapter. Engage peg into slot and push the
locking nut down and then clockwise onto bayonet adapter. Pull back gently on the locking
nut to seat peg in slot.
2.3.3 Install Low Voltage Control Harness.
A.
Install the low voltage control harness as described in Section 2.2 before continuing.
B.
Attach the PURPLE wire of the low voltage control harness to the RED wire of the CHT probe
assembly.
