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for data about the engine control system.
2. Description and Operation
Figure 1 shows the simplified schematic diagram of the starter system. The system operates off a 12
VDC supply.
The TAE 125 Diesel engine has a small, high-powered electric starter. The starter motor is located on
the left side of the engine near the front. It has an integral solenoid to connect the starter motor to the
relay junction box bus. Either the airplane battery or the external power system can supply the this bus
for the starter.
The ELECTRIC MASTER key switch (marked OFF ON START) is located on the bottom left of the
instrument panel. Turn the key clockwise against the spring to operate the starter. Release the key
when the engine starts. The spring returns the key to the ON position.
A starter relay located on the instrument panel floor controls the current to the starter solenoid. An
ENGINE MASTER switch located on the bottom left of the instrument panel controls the ground
connection for the starter relay. This switch must be set to ON for the starter system to operate.
A START warning light on the annunciator panel comes ON when there is power to the starter. If this
light stays on after the engine has started, set the ELECTRIC MASTER key switch and the ENGINE
MASTER switch to OFF.
If necessary during starting, the engine control unit operates the glow plugs to heat intake air for the
engine.
AIRCRAFT
Starting DA 40 Series
AMM
Page 2
20 Sep 2007 80-01-00 Doc # 6.02.01
Rev. 5
5A
Starter
Main Battery
Battery Relay
Glow Relay
External
Power Relay
External
Power
Connector
OFF
ON
START
START
10
OFF
ON
Key Switch
Starter Relay Engine
Switch
FIREWALL
INSTRUMENT PANEL ENGINE COMPARTMENT
MAIN
BUS
RELAY
JUNCTION
BOX
BUS
Glow Plugs
Figure 1: Starter System Schematic Diagram
AIRCRAFT
DA 40 Series
AMM
Starting
Doc # 6.02.01
Rev. 5 80-01-00 Page 101
20 Sep 2007
Trouble-Shooting
1. General
The table below lists the defects you could have with the starting system. If you have the trouble
detailed in the Trouble column read across to the Possible Cause column. Then do the repair given
in the Repair column.
WARNING: DO NOT ALLOW PERSONS TO ENTER THE DANGER AREA OF THE
PROPELLER. THE PROPELLER MAY TURN AND CAUSE INJURY TO
PERSONS.
WARNING: DISCONNECT AND ISOLATE THE STARTER POWER CABLE BEFORE
DOING TESTS IN THIS SECTION. THE ENGINE MAY START AND
CAUSE INJURY TO PERSONS.
Trouble Possible Cause Repair
The starter does not operate
when the ELECTRIC MASTER
key switch is set to START and
the ENGINE MASTER switch
is set to ON.
The START circuit-breaker is
not set.
Set the START circuit-breaker.
The battery is discharged. Replace/Recharge the battery.
The ELECTRIC MASTER key
switch is defective.
Replace the ELECTRIC
MASTER key switch.
The ENGINE MASTER switch
is defective.
Replace the ENGINE MASTER
switch.
The starter relay is defective. Starter relay on starter motor:
Refer to the engine
manufacturer.
Starter relay in relay junction
box: Replace.
Starter defective. Refer to the engine
manufacturer.
Defective cable. Do a test of the electrical
cables. Refer to Chapter 92 for
the wiring diagrams.
Repair/Replace the defective
cable. Refer to Section 71-51
for repair limits of the engine
harness.
AIRCRAFT
Starting DA 40 Series
AMM
Trouble Possible Cause Repair
Page 102
20 Sep 2007 80-01-00 Doc # 6.02.01
Rev. 5
The starter Power-On light
stays on after the key is
released from the START
position.
The starter relay is defective. Starter relay on starter motor:
Refer to the engine
manufacturer.
Starter relay in relay junction
box: Replace.
The starter solenoid is
defective.
Refer to the engine
manufacturer.
Difficult cold starting. Glow relay defective.
Glow plugs worn.
Replace the glow relay.
Replace the glow plugs. Refer
to the engine manufacturer.
AIRCRAFT
DA 40 Series
AMM
Starting
Doc # 6.02.01
Rev. 5 80-01-00 Page 201
20 Sep 2007
Maintenance Practices
1. General
This Section gives you only maintenance practices for the airplane part of the starter system. No
repairs are permitted on the TAE 125 Diesel engine. Only a TAE authorized repair shop or the
manufacturer can repair the engine part of the system.
　
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本文鏈接地址：鉆石40系列AMM 3(103)