Technical data

13773-001
24-30
Page 12 30 Nov 2000
G. Ammeter Select Switch
(1) Removal - Ammeter Select Switch
(a) Verify the ignition switch is in the off position and remove the key. (Refer to POH)
(b) Ensure BAT 1, BAT 2, and AVIONICS master switches are in the off position.
(c) Pull BAT 2 circuit breaker to the off position.
(d) Remove the engine cowling. (Refer to 71-10)
(e) Disconnect primary battery and insulate battery terminals to prevent accidental connec-
tion. (Refer to 24-30)
(f) Remove the MFD.
(g) Remove the screws and washers securing the Low-Volts annunciator to the instrument
panel.
(h) Identify and disconnect all wires from the Low-Volts annunciator and the select switch.
(i) Remove the nut and washer securing the Ammeter Select Switch to the instrument panel.
Remove the Low-Volts annunciator and the Ammeter Select Switch from the instrument
panel.
(j) To disconnect the switch, use a solder gun and remove the solder from each terminal.
(2) Installation - Ammeter Select Switch
(a) Identify the corresponding wires and place heat shrink tubing into position. Solder all wires
to the corresponding terminal on the select switch.
(b) Secure the Low-Volts annunciator to the instrument panel using the existing screws and
washers.
(c) Place the Ammeter Select Switch into position and secure it with the existing washer and
nut.
(d) Install MFD.
(e) Connect the primary battery.
(f) Install and secure the engine cowling.
H. Battery 1
(1) Servicing - Electrolyte Replenishment
Prior to servicing, visually inspect the battery, container, cover, and connections for distortion or
damage. Electrolyte is stored in the primary battery case. Electrolyte is a diluted solution of sul-
furic acid and distilled water with a specific gravity of 1.285. Pure distilled water has a specific
gravity of 1.000 and concentrated sulfuric acid has a specific gravity of 1.835.
To minimize battery discharge during storage or low usage of the airplane, the battery should be
disconnected. If all switches are turned to the off position, the only electrical drain connected
directly to the primary battery will be the clock. Removing the external 5-amp fuse from the MCU
will prevent the clock from draining the battery.
WARNING:
Always wear a face shield and remove all jewelry before servicing the bat-
tery. Metal objects may fuse to electrical connections and cause severe
burns. Acid should never be added unless the electrolyte has been lost by
spillage, because the acid does not evaporate. When it is necessary to add
acid, the battery should be fully charged, on charge and gassing freely. Spe-
cific gravity then may be adjusted by adding acid or distilled water, or draw-
ing off electrolyte.