10 
9 
2 
15 
13 
1 

17,23,
24,26
-28,29
25,26,27

Figure 3. Propeller Governor Drive and Crankcase Attaching Parts 1-6
AVCO LYCOMING 10-540-C4D5D
SERIESPARTSCATALOG
WIDE CYLINDER FLANGECRANKCASE
MODELENGINES ACCESSORYHOUSINGAND RELATED PARTS
HOUSING
ACCESSORY ASSEMBLY,FUEL PUMP, DRIVES AND COVERS
FIG.
REF.

4
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19

20
21
22
23
24
25
26
27
28
29

30
31 32 33 34

PART
NUMBER

73818
LW-10908
31CD-20
25C-12
31C-13
LW-10341
LW-12589
MS-124703
1102
71651
MS29512-10
AN814-10L
STD-294
1540
MS29512-10
LW-14828
LW-10307
71596
STD-208
8313 60430 STD-8
STD-160
STD-1411
LW-10303
8313 60430 STD-8
STD-160
STD-1411 60096
LW-15473 STD-33 STD-1882

DESCRIPTION
GASKET, housing
Accessory HOUSING
ASSY., Accessory
STUD,5/16-18 x 2-1/2 long, drill
STUD, 1/4-20 x 1-1/2 long
STUD, 5/16-18 x 1-5/8 long
INSERT,Heli-coil, 1.00-14 x 3/8 long
INSERT,Heli-coil, 5/8-18 x 3/8 long
INSERT,Heli-coil,3/4-16 x 1-1/8 long
PLUG,1/8-27 NPT, Allen head

FITTING,Breather
SEAL, Oil 7/64 section x 23/32 I.D.
PLUG, 7/8-14 thd.
GASKET,

7/8 O.D. x 5/8 I.D.x 3/32 annular PLUG,Thermometer
well SEAL, Oil, 3/32 section x 45/64 I.D. REDUCER,
1/2 tubing to 5/8 tubing GEARASSY., Accessory driven WASHER, drive gear
Accessory OIL SEAL, 7/8 I.D.x 1-1/2 O.D. x 5/16 wide GASKET, pump
Vacuum COVER, pump
Vacuum WASHER,
1/4 plain WASHER, teeth
1/4 lock, internal NUT, 1/4-20 plain PLUG,Vacuumpump drive GASKET, pump
Vacuum COVER, pump
Vacuum WASHER,
1/4 plain WASHER, teeth
1/4 lock, internal NUT, 1/4-20 plain GASKET,
Fuel pump FUEL PUMP, (6441234) WASHER,
3/8 plain SCREW,
3/8-16 x 1-9/32 long, socket hd. dr. hd.

QUANTITY
PER
ASSEMBLY

WIDE CYLINDER FLANGE MODEL
CRANKCASE ENGINES
9
17
18
20
Figure 4. AccessoryHousing Assembly, Fuel Pump, Drives and Covers 2-2

AVCO LYCOMING 10-540-C4D5D

SERIESPARTSCATALOG
WIDECYLINDERFLANGECRANKCASE ENGINES
MODEL
ACCESSORYHOUSINGAND RELATED PARTS 
OIL PUMP, TACHOMETERDRIVE AND OIL FILTER ASSEMBLY 
FIG. REF. 5  PART NUMBER  DESCRIPTION  QUANTITY PER ASSEMBLY 
　
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