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Obey the maintenance instructions of the battery manufacturer.
Always disconnect the battery when you do work on the electrical system. Disconnect the negative
cable first. Connect the negative cable last.
AIRCRAFT
Electrical Power DA 40 Series
AMM
Page 202
20 Sep 2007 24-34-00 Doc # 6.02.01
Rev. 5
3. Remove/Install the Battery
A. Remove the Battery from the Airplane
Detail Steps/Work Items Key Items/References
(1) Remove the engine cowlings. Refer to Section 71-11.
(2) Remove the battery retaining clamp:
S Remove the 2 nuts and washers from clamp.
S Lift the clamp clear of the retaining studs.
(3) Remove the cover from the battery box.
(4) Disconnect the negative cable from the battery.
(5) Disconnect the positive cable from the battery.
(6) Disconnect the vent hose from the battery.
(7) Remove the battery from the airplane.
AIRCRAFT
DA 40 Series
AMM
Electrical Power
Doc # 6.02.01
Rev. 5 24-34-00 Page 203
20 Sep 2007
B. Install the Battery in the Airplane
Detail Steps/Work Items Key Items/References
(1) Make sure that the battery is clean and dry.
(2) Move the battery into position in the battery
mount.
(3) Connect the vent hose to the battery.
CAUTION: MAKE SURE THAT YOU CONNECT THE CABLES TO THE
CORRECT TERMINALS. INCORRECT CONNECTION CAN DAMAGE
THE ELECTRICAL AND AVIONIC SYSTEMS.
(4) Connect the positive cable to the battery. Apply Dow Corning compound (DC4)
to the battery terminal and the cable
lug.
(5) Connect the negative cable to the battery. Apply Dow Corning compound (DC4)
to the battery terminal and the cable
lug.
(6) Install the cover to the battery box.
(7) Install the battery retaining clamp:
S Put the battery retaining clamp into position
over the retaining studs and on the battery.
S Install the 2 washers and nuts onto the
retaining studs.
Make sure that the clamp is seated
correctly.
Tighten the nuts down evenly.
(8) Tighten the 2 retaining nuts. Torque 1.6 Nm (1.18 ft.lb)
(9) Install the engine cowlings. Refer to Section 71-11.
AIRCRAFT
Electrical Power DA 40 Series
AMM
Page 204
20 Sep 2007 24-34-00 Doc # 6.02.01
Rev. 5
4. Disconnect/Connect the Battery for Maintenance
A. Disconnect the Battery for Maintenance
Detail Steps/Work Items Key Items/References
(1) Remove the engine cowlings. Refer to Section 71-11.
(2) Remove the battery retaining clamp:
S Remove the 2 nuts and washers from clamp.
S Lift the clamp clear of the retaining studs.
(3) Remove the cover from the battery box.
(4) Disconnect the negative cable from the battery.
(5) Disconnect the positive cable from the battery.
B. Connect the Battery after Maintenance
Detail Steps/Work Items Key Items/References
CAUTION: MAKE SURE THAT YOU CONNECT THE CABLES TO THE
CORRECT TERMINALS. INCORRECT CONNECTION CAN DAMAGE
THE ELECTRICAL AND AVIONIC SYSTEMS.
(1) Connect the positive cable to the battery. Apply Dow Corning compound (DC4)
to the battery terminal and the cable
lug.
(2) Connect the negative cable to the battery. Apply Dow Corning compound (DC4)
to the battery terminal and the cable
lug.
(3) Install the cover to the battery box.
(4) Install the battery retaining clamp:
S Put the battery retaining clamp into position
over the retaining studs and on the battery.
S Install the 2 washers and nuts onto the
retaining studs.
Make sure that the clamp is seated
correctly.
Tighten the nuts down evenly.
(5) Tighten the 2 retaining nuts. Torque 1.6 Nm (1.18 ft.lb)
(6) Install the engine cowlings. Refer to Section 71-11.
AIRCRAFT
DA 40 Series
AMM
Electrical Power
Doc # 6.02.01
Rev. 5 24-34-00 Page 205
20 Sep 2007
5. Remove/Install the Battery Relay
A. Remove the Battery Relay
Detail Steps/Work Items Key Items/References
(1) Remove the engine cowlings. Refer to Section 71-11.
(2) Disconnect the main battery:
S Disconnect the negative cable from the
battery.
S Disconnect the positive cable from the
battery.
(3) Remove the rear passengers’ seat for access. Refer to Section 25-10.
(4) Disconnect the ECU backup battery:
S Disconnect the negative cable from the
battery.
S Disconnect the positive cable from the
battery.
(5) Remove the cover from the relay junction box.
(6) Remove the nut and washer attaching the bus
bar to the relay.
(7) Disconnect the electrical cables from the battery
relay.
(8) Remove the 2 bolts which attach the battery relay
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钻石40系列AMM 1(123)
