B. Install the Engine Driven Fuel Pump Drain
Detail Steps/Work Items Key Items/References
(1) Make sure that the drain tube is not damaged and that it is not blocked.
(2) Move the drain tube into position. Attach the end of the tube to the engine driven fuel pump with a hose clip.
(3) Attach the drain tube to the main engine drain assembly at the rear of the engine compartment with a hose clip.
(4) Install the top cowling on the engine. Refer to Section 71-12.
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DA 40 Series AMM
DA 40 F
Intentionally left blank
DA 40 F
CHAPTER 72
ENGINE
Section 72-00
% Lycoming Engines
1. General
% This Section tells you about the Lycoming IO-360-M1A (installed in the DA 40) and the O-360-A4M
% (installed in the DA 40 F) engines. It tells you about the engine for background only. The data given in this Section will not be amended and you must always refer to the Lycoming manuals for data about the engine.
2. Description
A. Crankcase
% Both the IO-360-M1A (DA 40) and the O-360-A4M (DA 40 F) engines are four cylinder, horizontally
% opposed, direct drive engines. The engines have an aluminum alloy crankcase. The crankcase is in two halves, a left half and a right half. Bolts, studs, nuts and washers attach the left half to the right half.
% The oil sump bolts to the bottom of the crankcase. The fuel injector (for the IO-360-M1A) or the
% carburetor (for the O-360-A4M) attach to a pad at the front of the sump with studs, washers and nuts. The first part of the induction manifold is integral with the sump.
The crankcase has the bearings for the crankshaft and the camshaft. The top of the crankcase has the mounting pads for the cylinders. The rear of the crankcase has the mounting for the accessories and the accessory housing.
B. Crankshaft
The engines have hollow crankshafts with four main bearings. The crankshaft has four big-end bearings for the connecting rods. The front of the crankshaft has a drive flange for the propeller and flywheel.
The drive flange has six bolt holes. The bolt holes have special bushes. The bushes have a screw thread on the inside for the propeller bolts. Four of the bushes are long and two of the bushes are shorter. One of the shorter bushes is marked with an “o”, this is the index bush.
C. Camshaft
The one-piece camshaft is mounted in the crankcase. The camshaft is driven by a gear on the rear of the crankshaft. Another gear at the front of the camshaft drives the propeller governor gear-train
% in the IO-360-M1A engine. The camshaft has eccentric lobes which operate the push-rods for the valve-operating-gear.
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DA 40 Series AMM
DA 40 F
The caption of figure 1 is amended to read:
Figure 1: Engine Assembly (IO-360-M1A shown)
DA 40 F
B. Compression Test
Rows (3) and (22) are amended to read:
Detail Steps/Work Items Key Items/References
(3) Remove the engine cowlings. Refer to Section 71-10 (IO-360-M1A engine). Refer to Section 71-12 (O-360-A4M engine).
(22) Install the engine cowlings. Refer to Section 71-10 (IO-360-M1A engine). Refer to Section 71-12 (O-360-A4M engine).
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DA 40 F
Intentionally left blank
DA 40 F
TABLE OF CONTENTS
CHAPTER 73 ENGINE FUEL AND CONTROL
The title of Section 73-00 is amended to read:
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