24-30
Page 20
Serials w/ Perspective Avionics
EFFECTIVITY:
CIRRUS AIRPLANE MAINTENANCE MANUAL MODELS SR22 AND SR22T
01 Jan 2012
D. Alternator 2 - Serials w/ Perspective Avionics (See Figure 24-304)
(1) Removal - Alternator 2
(a) Set BAT 1, BAT 2, and AVIONICS switches to OFF positions.
(b) Remove engine cowling. (Refer to 71-10)
(c) Disconnect battery 1. (Refer to 24-30)
(d) Remove screws and washers securing alternator 2 baffling.
(e) Loosen upper alternator mounting bolt and belt tension adjustment bolt.
(f) Remove drive belt from alternator pulley.
(g) Remove bolts and washers securing alternator lower mounting boss to engine.
(h) Remove bolt, washers, and nut securing alternator upper mounting boss to engine.
Remove alternator from airplane.
(i) Identify and disconnect wires from alternator terminals.
(2) Installation - Alternator 2
(a) Acquire necessary tools, equipment, and supplies.
(b) Connect alternator wires to appropriate terminals.
(c) Position alternator upper mounting boss to engine bracket and loosely secure with bolt,
washers, and nut.
(d) Position alternator lower mounting boss to engine bracket and secure with bolts and wash-
ers.
(e) Position belt over alternator pulley.
(f) Using belt tension gauge, set belt tension at center of span between drive sheave and
alternator to 50 - 70 lb (23 - 32 kg) of belt tension. The belt should deflect no more than
0.11 inch (2.79 mm) with a 5 lb (2.3 kg) load. Re-tension after 5 hours of operation.
(g) Torque upper alternator mounting bolt to 400 to 450 in-lb (45.1 - 50.8 Nm).
(h) Torque lower alternator mounting bolt and belt tension adjustment bolt to 200 to 275 in-lb
(22.6 - 31.0 Nm).
(i) Install screws and washers securing alternator 2 baffling.
(j) Connect battery 1. (Refer to 24-30)
(k) Install engine cowling. (Refer to 71-10)
Description P/N or Spec. Supplier Purpose
Borroughs
Belt Tension
Gauge
BT-33-73F
(or equivalent)
Any Source Set belt tension.
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