Assitance in Parts

[WebMaster]

This was on the other list server thread. I suggested that it be posted here
Please respond to: TeamNMA@afnet.net

Dear 337 flying colleagues.

I've been a part of the group since 2000 and have posted a couple questions
here before with tremendous success, and have greatly appreciated your
assistance. I'm operating the following Skymaster in West Africa, Aircraft:
1978 T337-H S/N 33701865. As I'm solo out here pilot/mechanic, I appreciate
any and all input. Parts are hard to come by, and returns are next to
impossible. I have to be accurate the first time. I'm coming to the states
for a meeting the 8th through 18th, and hope to get some parts purchased to
take back with me.

I've got a few technical questions.

1) - Engine mounts. I've got some cracking and want to get them replaced.
My parts manual shows the same number for both the front and rear engines.
C299501-0301. (4 assemblies for each engine). Someone who has changed these
out before on this year aircraft, can you confirm that these are indeed
accurate numbers and if you are aware of any additional considerations, i.e.
should the associated AN7-47A and -50A bolts be automatically changed?

2) - Turbo Charger check valves. I've been advised that the turbo charger
check valves need to be changed each five years. There are two valves on each
turbo charger, a lower one and an upper one - 3142-00-5 (lower) HE646-2
(upper). Should both of these valves be changed on each turbo charger every 5
years?

3) - Charging system. I would like to get a stock of spare parts in my fly
away kit, as well as I need to replace a failed relay. The charging circuit
board (on the front firewall) has two small relays on the bottom of the board
(left and right) which trigger the "Alt Failed" light on the console from the
respective (front / rear) alternator. One of the relays has corroded and is
not repairable. I would like to find two of those relays, as well as purchase
replacement diodes for all of the diodes on that board. Does anyone have the
part numbers for these relays, as well as the part numbers for the diodes?
Then,,,,do you know where I might order them?

4) - Chargine system again. I have a pulsing in the electrical system. The
dash lights, cabin lights, have the rapid pulsing - very annoying and I'm sure
not good on equipment. I can remember it being discussed once, but don't see
that I kept the email in my files.

Thanks for any assistance.


Todd Aebischer
NMA - Africa West
Abidjan, Côte d'Ivoire
West Africa