CIRRUS AIRPLANE MAINTENANCE MANUAL MODELS SR22 AND SR22T
24-30
Page 23
All
EFFECTIVITY:
(a) Acquire necessary tools, equipment, and supplies.
(b) Position MCU to firewall and secure with bolts and washers. Apply sealant over bolt
heads.
(c) Install washers and nuts securing alternator 2 cable assembly to bus bar stud.
(d) Install washers and nuts securing battery 1 cable assembly to bus bar stud.
(e) Install washers and nuts securing alternator 1 cable assembly to bus bar stud.
(f) Install washers and nuts securing starter cable assembly to bus bar stud.
(g) MCU 14600-001 & 14600-002: Install screws and washers securing cable guide to MCU
chassis.
(h) MCU 14600-001, 14600-002, & 16600-001: Connect P108, P109, P111, and P115 con-
nectors.
(i) MCU 16600-001: Connect P757 connector, if installed.
(j) MCU 19900-001: Connect P135, P136, P137, and P138 connectors.
(k) MCU 19800-001: Connect P180, P181, P182, and P183 connectors.
(l) MCU 19900-001: Position wire loom to chassis and secure with clamps, washers, and
nuts.
(m) MCU 19900-001: Position landing light ballast to chassis and secure with washers and
nuts.
(n) Install washers and nuts securing grounding strap to MCU chassis.
(o) MCU 14600-001, 14600-002 & 16600-001: Install MCU cover. (Refer to 24-30)
(p) MCU 14600-001 & 14600-002: Apply sealant around cable guide holes where cable
assemblies and connector wires exit MCU.
(q) Connect battery 1. (Refer to 24-30)
(r) Perform Operational Inspection - Master Control Unit. (Refer to 24-30)
(s) Install engine cowling. (Refer to 71-10)
(3) Operational Inspection - Master Control Unit - Serials w/o Perspective Avionics
In order to perform the following check the engine must be operating. Do not stand or let anyone
else stand close to the arc of the airplane’s propeller while conducting this check.
(a) Verify all circuit breakers are set.
(b) Toggle battery 2 master switch to the ON position and verify the following occurs:
1
Volt / Amp meter indicates at least 24 volts on battery 2.
2
Serials 22-0002 thru 22-1601, 22-1603 thru 22-1643, 22-1645 thru 22-1662: ALT 1
and ALT 2 caution lights illuminate.
3
Serials 22-1602, 22-1644, 22-1663 & subs: ALT 2 caution light illuminates.
4
Flap position light off.
5
Attitude gyro low voltage flag hidden.
6
Serials 22-0002 thru 22-0820 w/o PFD: HSI HDG flag hidden within five minutes.
7
Serials 22-0435 thru 22-0820 w/ PFD, 22-0821 & subs w/o Perspective Avionics:
PFD powers up.
8
Serials 22-0002 thru 22-0820 w/o PFD: Turn Coordinator low voltage flag hidden.
9
Autopilot ready indication after gyro spool up.
(c) Toggle battery 1 master switch to the ON position and verify the following occurs:
Description P/N or Spec. Supplier Purpose
High Temperature Sili-
cone Sealant
RTV 736 Dow Corning Sealant.
15 Jun 2010
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