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S loosen the mounting bolts.
Refer to Figure 4.
(4) Loosen the adjusting bolt:
S Cut the lock-wire.
S Loosen the bolt.
(5) Loosen the adjusting bracket attachment bolt:
S Cut the lock-wire.
S Loosen the bolt.
(6) Move the alternator towards the engine and lift
the flexible belt clear of the alternator pulley.
(7) Examine the flexible belt. Look specially for:
S Wear or damage to the belt.
S Stretching of the belt.
(8) Install the flexible belt:
S Move the alternator up and towards the
engine.
S Put the flexible drive belt into position over
the alternator pulley and the drive pulley.
S Move the alternator down and away from the
engine until the flexible belt tension is correct.
S Then tighten the adjusting bolt and the
adjusting bracket attachment bolt.
S Lock the bolt heads to the adjusting bracket
with lock-wire
Make sure that the flexible belt is
correctly seated in the Vee groove.
Belt movement = 5 mm (0.2 in.) with
3 kp (6.5 lbf.) load applied.
AIRCRAFT
Electrical Power DA 40 Series
AMM
Detail Steps/Work Items Key Items/References
Page 204
20 Sep 2007 24-30-00 Doc # 6.02.01
Rev. 5
(9) Tighten the 2 alternator mounting bolts and install
the cotter pins.
(10) Connect the battery. Make sure that you connect
the positive lead first.
Refer to Section 24-31.
(11) Install the engine cowlings. Refer to Section 71-10.
(12) Do a function test of the alternator. Refer to Paragraph 6.
4. Remove/Install the Alternator
A. Remove the Alternator
Detail Steps/Work Items Key Items/References
(1) Remove the engine cowlings. Refer to Section 71-10.
(2) Disconnect the battery. Make sure that you
disconnect the negative terminal first.
Refer to Section 24-31.
(3) Disconnect the electrical connections to the
alternator.
(4) Loosen the main mounting bolts:
S Remove the cotter pins from the nuts.
S Loosen the mounting bolts.
Refer to Figure 4.
(5) Remove the adjusting bolt:
S Cut the lock-wire.
S Remove the bolt and the washer.
(6) Loosen the adjusting bracket attachment bolt:
S Cut the lock-wire.
S Loosen the bolt.
(7) Remove the flexible drive belt:
S Move the alternator up and towards the
engine.
S Lift the flexible drive belt clear of the
alternator pulley.
AIRCRAFT
DA 40 Series
AMM
Electrical Power
Detail Steps/Work Items Key Items/References
Doc # 6.02.01
Rev. 5 24-30-00 Page 205
20 Sep 2007
(8) Remove the alternator:
S Remove the 2 nuts from the attachment bolts.
S Remove the 2 washers.
S Remove the 2 bolts, washers and spacers
which attach the alternator to the mounting
bracket.
S Move the alternator clear of the engine.
Hold the alternator.
B. Install the Alternator
Detail Steps/Work Items Key Items/References
(1) Put the alternator in position in the alternator
mounting.
Hold the alternator in position.
(2) Install the alternator mounting bolts:
S Install the washer on the front mounting bolt.
S Put the bolt through the link plate, alternator
mounting bracket and the alternator.
S Install the washer on the rear mounting bolt.
S Put the bolt through the alternator, spacers
and mounting bracket.
S Install the washers on the bolts.
S Install the 2 nuts on the attachment bolts but
do not tighten the nuts.
From the front.
From the rear.
(3) Install the washer on the adjusting bolt and install
the adjusting bolt through the adjusting bracket
and into the alternator. Do not tighten the
adjusting bolt.
CAUTION: DO NOT MAKE THE FLEXIBLE BELT TOO TIGHT. TOO MUCH
TENSION IN THE BELT CAN DAMAGE THE BEARINGS IN THE
ALTERNATOR AND CAUSE ALTERNATOR FAILURE.
AIRCRAFT
Electrical Power DA 40 Series
AMM
Detail Steps/Work Items Key Items/References
Page 206
20 Sep 2007 24-30-00 Doc # 6.02.01
Rev. 5
(4) Install the flexible belt:
S Move the alternator up and towards the
engine.
S Put the flexible drive belt into position over
the alternator pulley and the drive pulley.
S Move the alternator down and away from the
engine until the flexible belt tension is correct.
S Then tighten the adjusting bolt and the
adjusting bracket attachment bolt.
S Lock the bolt heads to the adjusting bracket
with lock-wire.
Make sure that the flexible belt is
correctly seated in the Vee groove.
Belt movement = 5 mm (0.2 in.) with
3 kp (6.5 lbf.) load applied.
(5) Tighten the 2 alternator mounting bolts and install
　
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