MDKDK Parts Manual
MDKDK Parts Manual
MDKDK (Spec A)
English
Original Instructions 11-2015 A052J771 (Issue 1)
Introduction
This manual applies to the standard marine generator sets listed below. Parts are arranged in groups of related items
and each illustrated part is identified by a reference number corresponding to the same reference number in the parts
list. Parts illustrations are typical. Unless otherwise mentioned in the description or page heading, parts are inter-
changeable between models. Throughout this catalog left and right sides are determined by facing the engine end
(front) of the set.
MODEL HERTZ
7MDKDK/* 50Hz
9MDKDK/* 60Hz
* − The diagonal line (/) in the model and specification number separates generator
set characteristics from the specification number and letter. The specification
number denotes customer requested options or deviations from the standard
model. The specification letter advances (A to B, B to C, etc.) with major
manufacturing changes.
Index
Actuator, Governor, 36
Adapter, Oil Drain, 43 C
Alternator (12V), 29
Cam, Fuel, 14 , 15
Alternator (24V), 30
Camshaft, 9
Arm, Rocker, 24
Camshaft, Fuel, 14 , 15
Armature, Starter (12V), 11
Cap, Coolant Tank , 42
Armature, Starter (24V), 12
Cap, Cylinder Block Sealing, 6
Assy, Bearing Case Main, 13
Cap, Cylinder Head Sealing, 21
Assy, Cylinder Block Drain Cock, 6
Cap, Exhaust Manifold, 48
Assy, Engine Panel, 57 , 59
Cap, Oil Drain Hose Pipe, 43
Assy, Replacement Engine, 6
Cap, Valve, 24
Assy, Solenoid Bracket, 50
Case, Main Bearing, 13
Assy, Water Separator Drain, 35
Chamber, Combustion, 21
Assy, Water Separator Pump, 35
Circlip, Governor Shaft, 14 , 15
Assy, Water Separator Replacement Head, 35
Circlip, Idle Gear, 9
Circlip, Piston Pin, 7
2
Index
3
Index
4
Index
5
Cylinder Block
26
25 27
24
28 29 23
31
16
12 21 32 13
19 15
20 18 17
16 14
2
1
20
12
2 13
3 8
4 7
5
10 11
7 5
6 22
8 9 30
8
REF PART QTY PART REF PART QTY PART
NO. NO. USED DESCRIPTION NO. NO. USED DESCRIPTION
6
Piston
8 7
1
7
7
Crankshaft
11
4
11
5
6
13
12
13
9
10
8
Camshaft
4 4
2
3
8
7 15
14
11
8
12 10
9
13
9
Flywheel
6 8
7 3
5
2
1
9
12
4
11
10 12
1 104−2156 1 Flywheel (Includes Ring Gear) 9 Starter (See Separate Page for
2 185−2170 1 Gear, Ring Components)
3 185−6409 6 Bolt, Flywheel 185−7104 1 12V
4 185−7218 1 Housing, Flywheel 185−7105 1 24V
5 185−7219 1 Cover 10 185−2564 2 Screw
6 185−6956 1 Bolt 11 191−2275−02 1 Guard, Starter
7 185−7221 1 Washer, Plain 12 815−0194 2 Screw, Hex Head
8 185−2178 8 Bolt (#10−32 x .38”)
10
Starter Components
(12V)
1
3
5
6
7
8
9
11
Starter Components
(24V)
4
5
7 6 3
10 11
9
12
Main Bearing Case
8
5
7
6
4
2 3
10 1
2 2 2
9 10 3
2 12
11 10
11
10
13
Fuel Camshaft
11
10
9
8
7 12
6 13
5
4
3
18
2 19
20
21 16 14
22
22
1 16
17
24 23 15
25
25
22 20
21
17
14
Fuel Camshaft
21
1
3
20
4
5 18
17
2 19
11 16
13
12
14 7
14 8
6
15
8 10
9
14 13
12
11
15
15
Speed Control Plate
2
1
7
3
2
4
8
5
6
16
Governor
11
9
2
10
12
8
7
1
5
4
13
4 6
3
8
17
Injection Pump
2
1 3
4
18
Injection Pump
12 9
1 6
13
2
10 14
11 15
4 10
8
11 15
3 9
5
19
Injection Pump Components
2
3
4
21
5 20
10 19
6 16
15 18
7
14
17
8 13
12
11
20
Cylinder Head
8
5
6
7 4
14
9 13
12
2
1
7 10
11 2
21
Nozzle Holder and Glow Plug
9 13 15 15
8
12 11 7
15 14
1 13
15
4
3 13
5
2 13
5
10
6
5
6
6
22
Nozzle Holder Components
1
3
11
4
11
10 6
11
5
12
13
23
Valve and Rocker Arm
19
20 9
13
12
15
10
15
14
8
20 19 7
15 18
16 5
17 4
15 3
10 6
19
20
14
9 15
2
10
15 1
2
13 12 11
1
2
1
24
Water Flange
11
12
13 10
8
6 7
2
7
3
1
5
4
25
Cylinder Head Cover
5
3 6
7
9
1
26
Gearcase
17
2 18
1 27
14
28
29 15
16 14
26
22
24
23
17 2
13
2 12
21
19 5
4 7
6
16
2 11
10 9
25
30 20 2
18 8
17
27
Captive Water Pump Components
3
1
5
7 6
1 181−9108 1 Pump Assy, Water (Includes * − Parts Included in Water Pump Assy.
Parts Marked *)
2 510−0225 1 *Bearing
3 509−0440 1 *Seal Assy, Mechanical
4 185−6674 1 *Impeller, Water Pump
5 185−5716 1 *Pipe, Water Return
6 185−7299 1 Gasket, Water Pump
7 185−6677 4 Bolt
8 181−9007 2 Screw, Hex Head
9 185−6672 1 *Flange, Pump Water
28
Alternator
12V Negative/Isolated Ground
15 14
2
3
4
13
12
5 1
6
11 7
10
8
29
Alternator
24V Negative Ground
12
14
13
2
4
3
10
11
9
8
6 5
30
Alternator Components
24V Negative Ground
2
3
1
4 5
6
7
31
Fuel Pump
11
10
12
13
9
14
7
7
2
23
23
4
23
3
15
4
19 18
4 1 8
4
4
20
6
5 9
16 21
9
22
24
17
REF PART QTY. PART REF PART QTY. PART
NO. NO. USED DESCRIPTION NO. NO. USED DESCRIPTION
3
5,
4
1
7
5
5
7
4
2
6
5
5
5
6
2
4 3
34
Remote Water Separator Components
3
8
35
Governor Actuator
1 Actuator, Governor
306−5006−01 1 (12V)
306−5006−02 1 (24V)
2 725−1027 2 Screw, Socket Head Cap
(M6 x 1 x 16mm)(1/32”)
3 526−0063 2 Washer, Copper
4 184−0071 1 Gasket, Solenoid Cover
36
Heat Exchanger
2
3
4
6
5
7
11
9 12
10
130−5176 Kit, Cap (Includes Parts 11 862−0026−54 2 Nut, Hex (M6 x 1mm)
Marked *) 12 850−0114−53 2 Washer, Lock (M6)
1 130−7489−02 Exchanger, Heat
2 800−0317 1 *Screw, Hex Head (5/16−18) * − Parts Included with Heat Exchanger and in Heat
3 130−5169 1 *Cover, End Exchanger Cap Kit.
4 509−0351 1 *O’Ring 13 − 1 Exchanger, Heat (See Heat
5 130−5170 1 *Gasket, End Cover Exchanger Page for Details)
6 821−6002−02 1 Screw, Hex Head Sems
(M6 x 1 x 12mm)
7 130−4740−03 1 Strap, Mounting * − For Heat Exchanger Service Parts See Heat Exchanger
8 130−4434 1 Pencil, Zinc Previous Page
9 508−0210 2 Edging, Heat Exchanger
Bracket (90mm)
10 130−4739−03 1 Bracket, Heat Exchanger
37
Cooling System)
1
2 6
5
7
3
8 5
2 2
12
11
10
2
13
38
Keel Cooling System
1 2 8 10
6 11
16
2
7
9 8
3
2 15
4
2
14
17 2
12 12
14
13
15 18
39
Raw Water Pump Components
14
12
11
10
9
6
4
3
1
2
8 7
5
13
REF PART QTY. PART REF PART QTY. PART
NO. NO. USED DESCRIPTION NO. NO. USED DESCRIPTION
40
Vacuum Relief Valve
6
6
41
Coolant Recovery Tank
42
Oil System
7
6
1
5
4
3
43
Oil Pan
2
7
3
6
4 1
44
Resonator
15
14
18 17
13
12
16
10
9
8
7
11
2 1
3
6
45
“Blank Page”
46
Exhaust Manifold
17 7
1
5
6
2, 19
16 8
15
18 9
11 10
12
15 14
13
47
Exhaust Manifold
48
Grounding
8
9
6
7 7
5
6
5
49
Isolation Ground
14
16
2
4
3
5
10
8 6
10 6
7
8
12
11 14
10 9
12
13
50
Mounting Base
8 2
4
6
7 7
7 10 11 12
10
9
9
3
3 5
1
5
51
Belt Guard
6 2
2
5
4
52
Generator
11 10
9
3
8
12 7
13
4 1
6
5
14
15
16 18
17
22
23
21
19 20
54
Control Box
29
15
18
13 21 22 14
7 32
31
18
30
17
35
16 17 12
34
36
27 4
19
26 20
14 20
28 15 19
24 20 2
25
17 3
18
11 11
18
14
14
1
10
17
16
9
23 8
7
6 33
7
5
55
Control Box
56
Control Panel Components
2
Standard Relay Position
4
8
6
57
Control Panel Components
541−1130 1 Kit, Control (Includes 3 860−2028 4 Nut, Hex (6−32 Low Proof Lock)
Instructions)
1 300−6393 1 Assy Control
2 814−2152−01 4 Screw, Flat Head Xrec * − All Parts Included in Control Kit.
58
Control Panel)
4
9
2
11
10
7
8
3
5
9 7
4
3
6
2
5
8
5
P4
S11
10
60
Remote Switch Panel
w/Hour Meter
1 4
7 5
2
10
9 P4
8
10
11 S11
3
61
Control Harness
9 13
J4
10
J4
7 S4
8
6
S3
2
P3
3
P2
12 P1
11
3
4
7 6
3
2
8
4
12
11 14
9
16
15
10
P1
17 13
17
18
19 22
19
J1
J2
63
Wiring Harness
21
20
23
22
64
Labels, Gasket, Kits
65
Numerical Index
Part No. Page Part No. Page Part No. Page Part No. Page
66
Numerical Index
Part No. Page Part No. Page Part No. Page Part No. Page
67
Numerical Index
Part No. Page Part No. Page Part No. Page Part No. Page
68
Numerical Index
Part No. Page Part No. Page Part No. Page Part No. Page
69
Numerical Index
Part No. Page Part No. Page Part No. Page Part No. Page
70
“Intentionally Left Blank”
58
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Copyright E 2015 Cummins Power Generation Inc. All rights reserved.
Cummins, Onan, the “C” logo, and “Performance you rely on.” are
trademarks of Cummins Inc. Other company, product, or service names
may be trademarks or service marks of others. Specifications are subject to
change without notice.