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| D18S No. 3 |
Kit: 502 |
Revised: April 15, 1953 |
| ADDITION OF RESERVOIR DRAIN FOR HYDROMATIC PROPELLERS |
In order to improve the efficiency in servicing the airplane, we have made
necessary changes in the propeller feathering pump supply line to facilitate
faster draining of the oil tanks.
This change is only desirable on airplanes that have hydromatic propellers or
have provisions for hydromatic propellers. Airplanes, serials A-245 and after,
have been changed at the factory. The change may be accomplished as follows:
1. The propeller feathering pump oil supply line for the right engine connects
to a fitting on the bottom of the oil tank and is accessible from the inside of
the nacelle. This fitting is the second fitting on the tank. From this
connection, remove the clamp on the hose from the end nearest the tank. Pull the
hose from its present elbow connection adn drain the oil from the tank.
2. Remove the two elbow fittings and keep the elbow that was connected to the
hose.
3. Using Parker Sealube on all fittings, install the nipple, tee, and drain plug
into the bottom of the tank in that order.
4. Install the elbow (removed in step 2) into the tee.
5. Cut off required amount of present hose and reconnect to elbow with the clamp
removed in step 1.
6. Safety the drain plug with safety wire.
7. Repeat steps 1 to 6 for the left drain reservoir installation.
8. Refill the oil tanks.
Equipment Kit 502 for this change is available from your Beechcraft Distributor.
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