This document contains engineering drawings for an exploded piston engine assembly with 4 pages showing individual parts and assemblies at varying scales. The drawings include dimensions, tolerances, notes, and a parts list identifying 6 total parts - an engine block, crank shaft, piston, connecting rod sub-assembly (with 3 connecting rod pieces), piston pin, and hex bolts - made of materials like aluminum, steel, and others.

1. PISTON ENGINE ASSEMBLY
SCALE 1 / 2
PISTON ENGINE EXPLODED
SCALE 1 / 4
COURSE:
INVENTOR DRAWING NAME:
FIG #:
DRAFTER:
DATE:
SCALE:
PAGE #:
DDGT 240
PISTON ENGINE
20.69
M. ENCINIAS
9/5/2019
AS NOTED
1 OF 4
WW.DDGT.NET
DIGITAL DESIGN
GRAPHICS
TECHNOLOGY
TOLERANCES UNLESS SPECIFIED:
MILLIMETERS:
WHOLE NUMBER = ± .5
X = ±.25
XX = ±.12
ANGLES ±1 DEGREE
SURFACES
32
PARTS LIST
DESCRIPTION
MATERIAL
PART NUMBER
QTY
ITEM
ALUMINUM
ENGINE BLOCK
1
1
STEEL
CRANK SHAFT
1
2
STEEL
PISTON
3
3
CONNECTING ROD
SUB-ASSEMBLY
1
4
STEEL
CONNECTING ROD TOP
3
4.1
STEEL
CONNECTING ROD BOTTOM
3
4.2
M5x0.8 6H ↧28
STEEL
HEX BOLT
6
4.3
STEEL
PISTON PIN
3
5
METRIC
GENERAL NOTES:
ALL ROUNDS AND FILLETS TO BE
R3 UNLESS OTHERWISE SPECIFIED
ALL CHAMFERS TO BE 2 X 45°
UNLESS OTHERWISE SPECIFIED
LEGEND:
 DEGREES
 DIAMETER
R RADIUS
 DEPTH
1
5
3
4.1
2
4.2
4.3

2. ENGINE BLOCK
SCALE 1 / 3
PISTON PIN
SCALE 1 : 1
COURSE:
INVENTOR DRAWING NAME:
FIG #:
DRAFTER:
DATE:
SCALE:
PAGE #:
DDGT 240
PISTON ENGINE
20.69
M. ENCINIAS
9/5/2019
AS NOTED
2 OF 4
WW.DDGT.NET
DIGITAL DESIGN
GRAPHICS
TECHNOLOGY
TOLERANCES UNLESS SPECIFIED:
MILLIMETERS:
WHOLE NUMBER = ± .5
X = ±.25
XX = ±.12
ANGLES ±1 DEGREE
SURFACES
32
PARTS LIST
PART NUMBER
QTY
ITEM
ENGINE BLOCK
1
1
PISTON PIN
3
5
LEGEND:
 DEGREES
 DIAMETER
R RADIUS
 DEPTH
METRIC
253
91
45.5
R17.5
125
3X 60.1, 81
20 51
65
30
52
20

GENERAL NOTES:
ALL ROUNDS AND FILLETS TO BE
R3 UNLESS OTHERWISE SPECIFIED
ALL CHAMFERS TO BE 2 X 45°
UNLESS OTHERWISE SPECIFIED

3. PISTON
SCALE 1 / 2
SECTION A-A
SCALE 1 / 2
CRANK SHAFT
SCALE 1 / 2
COURSE:
INVENTOR DRAWING NAME:
FIG #:
DRAFTER:
DATE:
SCALE:
PAGE #:
DDGT 240
PISTON ENGINE
20.69
M. ENCINIAS
9/5/2019
AS NOTED
3 OF 4
WW.DDGT.NET
DIGITAL DESIGN
GRAPHICS
TECHNOLOGY
TOLERANCES UNLESS SPECIFIED:
MILLIMETERS:
WHOLE NUMBER = ± .5
X = ±.25
XX = ±.12
ANGLES ±1 DEGREE
SURFACES
32
A
A
PARTS LIST
PART NUMBER
QTY
ITEM
CRANK SHAFT
1
2
PISTON
3
3
METRIC
LEGEND:
 DEGREES
 DIAMETER
R RADIUS
 DEPTH
GENERAL NOTES:
ALL ROUNDS AND FILLETS TO BE
R3 UNLESS OTHERWISE SPECIFIED
ALL CHAMFERS TO BE 2 X 45°
UNLESS OTHERWISE SPECIFIED
60
35
20
3 TYP.
3 TYP.
24
3 TYP.
39
35
 TYP
72
12
26

20
48

6X CHAMFER 1 X 45 AT LOBES
13 13
13
13
14 14
13
13
21
24 34
21
34
21
24
285
( )
37

37

37

51 TYP
73 TYP
34 TYP
120.0° 120.0°
R20
25.5
B
C
A
A
B
C
39

4. CONNECTING ROD TOP & BOTTOM
SCALE 1 : 1
SECTION B-B
SCALE 1 : 1
VIEW C-C
SCALE 1 : 1
COURSE:
INVENTOR DRAWING NAME:
FIG #:
DRAFTER:
DATE:
SCALE:
PAGE #:
DDGT 240
PISTON ENGINE
20.69
M. ENCINIAS
9/5/2019
AS NOTED
4 OF 4
WW.DDGT.NET
DIGITAL DESIGN
GRAPHICS
TECHNOLOGY
TOLERANCES UNLESS SPECIFIED:
MILLIMETERS:
WHOLE NUMBER = ± .5
X = ±.25
XX = ±.12
ANGLES ±1 DEGREE
SURFACES
32
PARTS LIST
PART NUMBER
QTY
ITEM
CONNECTING ROD TOP
3
4.1
CONNECTING ROD BOTTOM
3
4.2
B
B
C
C
METRIC
LEGEND:
 DEGREES
 DIAMETER
R RADIUS
 DEPTH
GENERAL NOTES:
ALL ROUNDS AND FILLETS TO BE
R3 UNLESS OTHERWISE SPECIFIED
ALL CHAMFERS TO BE 2 X 45°
UNLESS OTHERWISE SPECIFIED
28
20
R22 20
16
116
19 12 19
42
29
35.5
M5x0.8 6H, 8 5.5
47 47
12
4.1 4.2
PARTING LINE
4.1
4.2