Table of Contents
Advertisement
SECTION 5
MAINTENANCE PROCEDURES
(7) Check action of impulse coupling (D-2000 series only). With the ignition switch off observe
breaker cam end of rotor while manually cranking engine through a firing sequence. Rotor should
alternately stop and then (with an audible snap) be rotated rapidly through a retard firing position.
e. Alternator Output – The alternator should be checked to determine that the specified voltage and
current is being obtained.
2. FUEL SYSTEM.
a. Repair of Fuel Leaks – In the event a line or fitting in the fuel system is replaced, only a fuel soluble
lubricant, such as clean engine oil or Loctite Hydraulic Sealant may be used. Do not use any other
form of thread compound.
b. Carburetor Fuel Inlet Screen Assembly – Remove the assembly and check the screen for distortion or
openings in the strainer. Replace for either of these conditions. Clean screen assembly in solvent and
dry with compressed air and reinstall. The fuel inlet screen assembly is tightened to 35-40 in.-lbs.
c. Fuel Grades and Limitations – The recommended aviation grade fuel for the subject engines is listed
in Section 3, item 9.
In the event that the specified fuel is not available at some locations, it is permissible to use higher
octane fuel. Fuel of a lower octane than specified is not to be used. Under no circumstances should
automotive fuel be used (regardless of octane rating).
It is recommended that personnel be familiar with the latest revision of Service Instruction
No. 1070 regarding specified fuel for Lycoming engines.
5-4
LYCOMING
Figure 5-2. Timing Marks on Rotating Magneto
NOTE
SERIES OPERATOR'S MANUAL
O-320
Advertisement
Chapters
Table of Contents
