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Enstrom TH-28/480 Series Maintenance Manual Supplement 8
G1000H Integrated Flight Deck System
Rev. 1, Jan 25/18
Page 1-30
GDU 1040H MFD/PFD Cooling Fan (Figure 19, Figure 20)
1.5.2.1 Scheduled
Maintenance
There is no scheduled maintenance for the cooling fan. Maintenance is “On Condition
Only”.
1.5.2.2 Removal
A. Remove power to the GDU 1040H cooling fan(s). Pull the PFD FAN and/or MFD
FAN circuit breaker(s) out. Disable the circuit breaker by installing a cable tie or
other similar device around the circuit breaker stem.
B. Access the cooling fan by removing the instrument console shroud from the upper
console. Remove the shroud attachment hardware shown in the figure below.
C. Disconnect the electrical wiring.
D. Remove the four attachment screws and washers and remove the fan.
1.5.2.3 Installation
A. Install the cooling fan with the four attachment screws and washers.
B. Connect the electrical wiring.
C. Reinstall the instrument console shroud.
D. Remove the cable tie or other similar device from the PFD FAN and/or MFD FAN
circuit breaker stem and push the stem in to set the circuit breaker.
Figure 19. Shroud Installation
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