Technical data

13773-001

74-10

Page 1

ELECTRICAL POWER SUPPLY

1. DESCRIPTION

This section describes the maintenance practices pertinent to the magnetos. For additional maintenance

practices pertaining to the magnetos, refer to the List of Publications listed in the front of this manual.

(Refer to TCM Ignition Systems Master Service Manual)

2. MAINTENANCE PRACTICES

A. Magnetos (See Figure 74-101)

(1) Removal - Magnetos

(a) Remove cowling. (Refer to 71-10)

CAUTION: Prior to removing harness cap, mark the harness cap and adjacent point on

distributor housing for reference on reinstallation.

CAUTION: Protect openings exposed as a result of removing magnetos against entry

of foreign material by installing covers or sealing with tape.

WARNING:

Ensure engine magnetos are grounded (OFF) prior to rotating propel-

ler.

(b) Remove screws securing harness caps to magnetos and remove harness caps.

(d) Remove ground wires to magnetos.

(e) Ensure magnetos are supported and remove nuts and washers securing magnetos to

accessory case.

(f) Withdraw magnetos from airplane ensuring that the coupling bushings do not dislodge

and fall into the accessory case.

(2) Installation - Magnetos

(a) Refer to TCM Ignition Systems Master Service Manual for magneto inspection, mainte-

nance, installation, and timing. (Refer to TCM Ignition Systems Master Service Manual)

(b) Install cowling. (Refer to 71-10)

30 Nov 2000