WACO YMF F5 Series, Руководство по обслуживанию

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WACO Classic Aircraft Corporation
YMF WACO F5 SERIES MAINTENANCE MANUAL
REVISION: H Page
26
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RELEASED: 07/21/2017 PART NO. YMFAMM-1
OIL LINES
The oil lines connecting the oil tank to the engine should be at least ¾ inch tubing.
The supply line from the tank should be connected to the oil strainer. A second line is then installed from the
outlet side of the strainer to the fitting located in the rear case on the right side of the oil pump.
A return line from the outlet fitting on the left side of the oil pump returns scavenged oil to the tank.
FUEL LINES
Fuel may be supplied to the carburetor either by gravity or by pressure. When the gravity system is used the
carburetor float level is set for a pressure of 1 ½ lbs. and the fuel tank should be high enough above the
carburetor to produce a pressure of about 1 ½ lbs. at the carburetor.
A fuel strainer should be installed at the low point between the fuel tank and carburetor.
When the pressure system is used the float level of the carburetor is set for a pressure of 3 lbs. and the fuel pump
pressure should be set at 3 lbs. and the fuel pump pressure should be set at 3 lbs. the fuel line should be run
from the strainer to the inlet side of the fuel pump and from the outlet of the fuel pump to the carburetor. No
external by-pass fuel line is required, as the approved fuel pumps have built-in by-pass.
LIFTING SLING
Whenever it is required that the engine be handled on a hoist the rocker box type lifting sling as shown in
illustration No. 4 should be used. The sling should be fabricated locally from high quality steel wire cable .250
inch diameter. The steel cable should preferably be inserted in light weight rubber hose or other type protective
sheath. Only one length of cable is used. Thread the cable through the rocker boxes, using the numbers on the
illustration as a guide. Cable Sections 1 and 4 must be in front of Cable Sections 2 and 5 respectively. In this
position Sections 1 and 4 will act to prevent Sections 2 and 5 from slipping off the rocker boxes.
Securely clamp cable end 1 to 6, allowing enough slack so that Cable Sections 1 and 4 will clear the rocker boxes
of the No. 1 (top) cylinder. Apply lifting action slowly so that the cable will center itself and all four lifting sections
become taut. As cable is tightened, also check to see that the cable loops around the outside rocker boxes at 2
and 5 are not too close to the forward edge of the rocker boxes. The engine as supported by this lifting sling will
have the crankshaft tipped slightly upward so that it can easily be attached to the aircraft structure.
Only the engine itself may be lifted with the rocker box type lifting sling. Do not attempt to lift the engine
plus overhaul stand by this method.