DynaPower Generation II
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GENERATION II 12.0
DYNAPOWER MODEL 12.0 VARIABLE PUMP
SAE  E FLANGE & SHAFT
PARTS DRAWING
MADE IN THE USA
Original Equipment
1
GENERATION II 12.0
DYNAPOWER MODEL 12.0 VARIABLE PUMP
SAE  E FLANGE & SHAFT
PARTS DRAWING
MADE IN THE USA
Original Equipment
2
GENERATION II 12.0
DYNAPOWER MODEL 12.0 VARIABLE PUMP
SAE  E FLANGE & SHAFT
REF. NO. PART NO. NO. REQ. DESCRIPTION
1 870895 1 Charge Pump
2 870218 2 Hex Bolt
3 870494 2 Lock Washer
4 842192 1 Coupling (Includes Item 5)
5 870080 1 Pin
6 871155 1 O ring
7 870228 4 Hex Bolt
8 870292 4 Hex Bolt
9 870494 8 Lock Washer
10 842544 1 Cover (Code 62)
11 842047 2 Plug
12 871912 3 O ring
13 840999 1 Spring
14 840925 3 Plunger
15 842395 1 Plug
16 872920 1 Spring
17 870095 1 Roll Pin
18 842196 1 Gasket
19 871187 1 Bearing (Includes Item 55)
20 841948 1 Valve Plate
21 842482 1 Housing (Includes Item 22)
22 840946 8 Stud
23 870095 1 Roll Pin
24 871013 1 O ring
25 872868 2 Plug
26 871916 2 O ring
27 841061 2 Trunnion
28 870172 12 Hex Bolt
29 870491 12 Lock Washer
30 840948 2 Gasket
31 840947 2 Thrust Washer
32 872854 1 Retaining Ring
33 842076 1 Upper Spring Seat
34 840997 1 Spring
35 840973 1 Lower Spring Seat
36 841950 1 Cylinder Block
37 840964 1 Return Plate
38 830700 9 Piston Assy.
39 870213 4 Hex Bolt
MADE IN THE USA
Original Equipment
3
GENERATION II 12.0
DYNAPOWER MODEL 12.0 VARIABLE PUMP
SAE  E FLANGE & SHAFT
REF. NO. PART NO. NO. REQ. DESCRIPTION
40 840981 4 Tab Lock Washer
41 842493 2 Crescent Clip
42 842494 2 Crescent Bearing
43 840982 4 Spacer
44 840902 1 Wear Plate
45 870071 1 Roll Pin
46 840919 1 Cam
47 871186 2 Trunnion Bearings
48 842359 1 Lever Assy. (Includes Item 51)
49 840909 1 Key
50 870889 2 Cap Screw
51 871058 1 Pin
52 841033 1 Clevis Pin
53 871953 2 Retaining Ring
54 871947 1 Retaining Ring
55 1 See Item 19
56 871952 2 Retaining Ring
57 842193 1 Shaft SAE  E
58 871950 1 Retaining Ring
59 871184 1 Bearing
60 875271 1 Square Ring
61 841105 1 Flange SAE  E
62 870494 8 Lock Washer
63 870568 8 Hex Nut
64 840008 1 Gasket
65 870107 1 Shaft Seal
66 840126 1 Seal Retainer
67 870480 6 Lock Washer
68 870150 6 Hex Bolt
SERVICE KITS
Part No. Flange Type Description
894404 SAE  E O ring & Gasket Kit 6, 12, 18, 26, 30, 60, 64 & 65
894098 SAE  E Shaft Seal Kit 64, 65 & 66
894357 SAE  E Rotating Group Kit 20, 32, 33, 34, 35
36, 37, 38, 39, 40, 41, 42, 43 & 44
MADE IN THE USA
Original Equipment
4
GENERATION II 12.0
DYNAPOWER MODEL 12.0 FIXED MOTOR
SAE  E FLANGE & SHAFT
PARTS DRAWING
MADE IN THE USA
Original Equipment
5
GENERATION II 12.0
DYNAPOWER MODEL 12.0 FIXED MOTOR
SAE  E FLANGE & SHAFT
PARTS DRAWING
MOUNTING SURFACE
3
1532
3.115
3.135
9
116 3 5
SQ. KEY, 1 LG
8 8
1 - 20 UNEF - 2A
5
23
HUNC - 28
8
32
7
1.427
116 DEEP 1
1.447 COTTER PIN
8
1.500 TAPER / FT
1 1.500 MAJOR DIA
1 SAE BOLTED FLANGE
2
5
17
8
HIGH PRESSURE SERIES 16
7
216
PORTS A & B
21
2
32
PLAN COVER
31
2
32
TAPERED SHAFT
13DIA THRU
HIGH PRESSURE GAGE PORT LOW PRESSURE GAGE PORT
16
1 1
TYP 4 HOLES
OD TUBE PORT OD TUBE PORT
4 2
7 3
20 UN - 28 20 UN - 28
16 4 .625
.605
UNLOADING VALVE
45º
1 TYP
OD TUBE PORT
4
7
20 UN - 28
16 6.500
6.496
PORT  A PORT  B DIA
1.748
1.747
DIA
H.P. RELIEF VALVE ADJ
PORT  A
3
4
1
525 5
64
4
H.P. RELIEF VALVE ADJ
MAX
PORT  B
SAE STANDARD INVOLUTE
SPLINE
13 TOOTH, 8/16 PITCH
513 MAX 513 MAX
32 32 MAJOR DIA FIT
L.P. RELIEF VALVE
9
516 1 5
1 16
4
111 3
8 7 3
4
4 516
8
11
CASE DRAIN
1232 215 3
16 10 SQUARE
8 1
1 1 OD TUBE PORT
1716 4
12,500 BASIC DIA
15
17 5
16 1 -12 UN - 28
8
207 REF
8
DYNAPOWER MODEL 12.0 FIXED MOTOR
SAE  E FLANGE & SHAFT
REF. NO. REQ. NO NO. REQ. DESCRIPTION
1 842531 1 Valve Housing
2 870493 6 Lock Washer
3 870734 6 Hex Bolt
4 872869 1 Plug
5 871908 1 O ring
6 842533 2 Plug
7 871914 2 O ring
8 841533 2 Spring
9 842534 2 Spring Retainer
10 842532 1 Shuttle Valve
11 872954 2 H/P Relief Valve Cartridge
12 872966 2 O ring/Back-up Ring Kit
MADE IN THE USA
Original Equipment
6
GENERATION II 12.0
DYNAPOWER MODEL 12.0 FIXED MOTOR
SAE  E FLANGE & SHAFT
REF. NO. REQ. NO NO. REQ. DESCRIPTION
13 872955 1 LP Relief Valve Cartridge
14 872967 1 O ring/Back-up Ring Kit
15 871113 1 O ring
16 876119 2 O ring
17 876122 2 O ring
18 871115 1 O ring
19 842530 1 Plug
20 871121 1 O ring
21 870292 4 Hex Bolts
22 870494 8 Lock Washers
23 870728 4 Hex Bolts
24 840146 4 Plug
25 871904 4 O ring
26 842543 1 Cover
27 870095 1 Dowel Pin
28 842196 1 Gasket
29 871187 1 Bearing (Includes Item 51)
30 841948 1 Valve Plate
31 842542 1 Housing
32 872854 1 Retaining Ring
33 842076 1 Upper Spring Seat
34 840997 1 Spring
35 840973 1 Lower Spring Seat
36 841950 1 Block
37 840964 1 Return Plate
38 830700 9 Pistons
39 870213 4 Hex Bolt
40 840981 4 Tab Lock
41 842493 2 Crescent Clip
42 842494 2 Crescent Bearing
43 840982 4 Spacer
44 840902 1 Wear Plate
45 875268 1 Square Ring
46 870071 1 Dowel Pin
47 841035 1 Flange
48 870494 8 Lock Washer
49 872683 8 Socket Head Cap Screws
50 871947 1 Retaining Ring
51 See Item 29
MADE IN THE USA
Original Equipment
7
GENERATION II 12.0
DYNAPOWER MODEL 12.0 FIXED MOTOR
SAE  E FLANGE & SHAFT
REF. NO. REQ. NO NO. REQ. DESCRIPTION
52 871952 2 Retaining Ring
53 840978 1 Shaft  SAE E
54 871184 1 Bearing
55 840971 1 Gasket
56 870107 1 Shaft Seal
57 840952 1 Seal/Bearing Retainer
58 870491 6 Lock Washer
59 872723 6 Socket Head Cap Screws
60 841472 1 Plug
61 871920 1 O ring
SERVICE KITS
PART NO. FLANGE TYPE DESCRIPTION
894475 SAE  E O ring & Gasket Kits 5, 7, 12, 14, 15, 16, 17, 18, 20, 28, 45, 55, 56
894161 SAE  E Shaft Seal Kit 55, 56 & 57
894357 SAE  E Rotating Group Kit 30, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44
MADE IN THE USA
Original Equipment
8
GENERATION II 12.0
DYNAPOWER MODEL 12.0 VARIABLE MOTOR
SAE  E FLANGE & SHAFT
PARTS DRAWING
MADE IN THE USA
Original Equipment
9
GENERATION II 12.0
DYNAPOWER MODEL 12.0 VARIABLE MOTOR
SAE  E FLANGE & SHAFT
PARTS DRAWING
5
2016
HIGH PRESSURE GAGE PORT
SERVO CONTROL ACTUATOR IS
1 29
OD TUBE PORT SHOWN IN THE NULL POSITION 3
POSITION  D
4 32
.182
30º 30º
7 .192
POSITION  C
LOW PRESSURE GAGE PORT
16 -20 UNF - 28 THD LOW PRESSURE GAGE PORT
5 29
1 1
1 CHARGE PRESSURE GAGE PORT 2 2
OD TUBE PORT OD TUBE PORT 16 64
3 2 4
4 (ALSO CONTROL EXT. FEED) 29
1
1 32 .250
3 DIA. 7
OD TUBE PORT .251
16-20 UNF - 28 THD
4 -16 UN - 28 THD 4
7
16 -20 UNF - 28 THD 1
2 5
2 1
8 45º TYP
5
116
.605
.625
13
DIA
3 7 16
X 45º
32 832
4 HOLES
CHAMFER
1 12.500 DIA
416
BASIC
95
PORT  A 8
PORT  B
3
4
1.748DIA.
1.747
H.P. R/V 6.500
525MAX
64 DIA.
6.498
ADJ
PORT  B ALTERNATE CASE DRAIN
H.P. R/V 7
5
8 1 OD TUBE PORT
ADJ
UNLOADING PORTS
5
PORT  A
1 1 -12 UN - 28 THD
16
OD TUBE PORT SAE STANDARD
4
TYP 2 PORTS
INVOLUTE SPLINE
7
7 13 TOOOTH
16 -20 UNF - 28 THD 7 7
L.P. R/V
216 216 3 8 8/16 PITCH
4 MAJOR DIA FIT
513 513 5
32 32 CASE DRAIN
16 3
9 516
516 1
449 215
6463 16 1 OD TUBE PORT
10 3 SQUARE 4
8
564
111
8
7
1317
32 643 1 -12 UN - 2B THD
16
64
1
18
4
1311
32
191
8
1
2116 REF
9
1632
3
SQ. KEY 15 LG NUT FOR
8 8
1 -20 UNEF - 2A
THREAD
3.115
3.135
1
COTTER
8
1.56
5
8 -11 UNC - 28 THD
3
1 DEEP
8
1 5
12 DIA SAE 17
16 87
1 .72 TAPPERED SHAFT 216
1 SAE BOLTED FLANGE
2
21
1.427 1,500 TAPER / FT 2
HIGH PRESSURE SERIES 32
1.447 31
1,500 MAJOR DIA 2
32
PLAN COVER
DYNAPOWER MODEL 12.0 VARIABLE MOTOR
SAE  E FLANGE & SHAFT
REF. NO. PART NO. NO. REQ. DESCRIPTION
1 842531 1 Valve Housing
2 870493 6 Lock Washer
3 870734 6 Hex Bolt
4 872869 1 Plug
5 871908 1 O ring
6 842533 2 Plug
7 871914 2 O ring
8 841533 2 Spring
9 842534 2 Spring Retainer
10 842532 1 Shuttle Valve
11 872954 2 H/P Relief Valve Cartridge
12 872966 2 O ring/Back-up Ring Kit
13 872955 1 LP Relief Valve Cartridge
14 872967 1 O ring/Back-up Ring Kit
MADE IN THE USA
Original Equipment
10
GENERATION II 12.0
DYNAPOWER MODEL 12.0 VARIABLE MOTOR
SAE  E FLANGE & SHAFT
REF. NO. PART NO. NO. REQ. DESCRIPTION
15 871113 1 O ring
16 876119 2 O ring
17 876122 2 O ring
18 871115 1 O ring
19 842530 1 Plug
20 871121 1 O ring
21 870292 4 Hex Bolts
22 870494 8 Lock Washers
23 870728 4 Hex Bolts
24 840146 5 Plug
25 871904 5 O ring
26 842543 1 Cover (Code 62)
27 870095 1 Dowel Pin
28 842196 1 Gasket
29 871187 1 Bearing (Includes Item 65)
30 841948 1 Valve Plate
31 842482 1 Housing (Includes Items 32 & 33)
32 840946 8 Stud
33 870095 1 Roll Pin
34 871013 1 O ring
35 872868 2 Plug
36 871916 2 O ring
37 841061 2 Trunnion
38 870172 12 Hex Bolt
39 870491 12 Lock Washer
40 840948 2 Gasket
41 840947 2 Thrust Washer
42 872854 1 Retaining Ring
43 842076 1 Upper Spring Seat
44 840997 1 Spring
45 840973 1 Lower Spring Seat
46 841950 1 Cylinder Block
47 840964 1 Return Plate
48 830700 9 Piston Assy.
49 870213 4 Hex Bolt
50 840981 4 Tab Lock Washer
51 842493 2 Crescent Clip
52 842494 2 Crescent Bearing
53 840982 4 Spacer
54 840902 1 Wear Plate
55 870071 1 Roll Pin
56 840919 1 Cam
57 871186 2 Trunnion Bearing
MADE IN THE USA
Original Equipment
11
GENERATION II 12.0
DYNAPOWER MODEL 12.0 VARIABLE MOTOR
SAE  E FLANGE & SHAFT
REF. NO. PART NO. NO. REQ. DESCRIPTION
58 842359 1 Lever Assy. (Includes Item 51)
59 840909 1 Key
60 870889 2 Cap Screw
61 871058 1 Pin
62 841033 1 Clevis Pin
63 871953 2 Retaining Ring
64 871947 1 Retaining Ring
65 1 See Item 29
66 871952 2 Retaining Ring
67 841863 1 Shaft SAE  E
68 871950 1 Retaining Ring
69 871184 1 Bearing
70 875271 1 Square Ring
71 841105 1 Flange SAE  E
72 870494 8 Lock Washer
73 870568 8 Hex Nut
74 840008 1 Gasket
75 870107 1 Shaft Seal
76 840126 1 Seal Retainer
77 870480 6 Lock Washer
78 870150 6 Hex Bolt
79 840147 2 Hex Bolt
80 841067 1 Cam Stop 0 Degrees
841068 1 Cam Stop 5 Degrees
841069 1 Cam Stop 7 Degrees
841070 1 Cam Stop 10 Degrees
SERVICE KITS
Part No. Flange Type Description
894474 SAE  E O ring & Gasket Kit 5, 7, 12, 14, 15, 16,
17, 18, 20, 25, 28, 34, 36, 40, 70, 74 & 75
894098 SAE  E Shaft Seal Kit 74, 75 & 76
894357 SAE  E Rotating Group Kit 30, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51,
52, 53 & 54
MADE IN THE USA
Original Equipment
12
GENERATION II 12.0
DYNAPOWER MODEL 12.0 PUMPVAL
SAE  E FLANGE & SHAFT
PARTS DRAWING
MADE IN THE USA
Original Equipment
13
GENERATION II 12.0
DYNAPOWER MODEL 12.0 PUMPVAL
SAE  E FLANGE & SHAFT
PARTS DRAWING
MADE IN THE USA
Original Equipment
14
GENERATION II 12.0
DYNAPOWER MODEL 12.0 PUMPVAL
SAE  E FLANGE & SHAFT
REF. NO. PART NO. REQ. NO. DESCRIPTION
1 871155 1 O ring
2 872960 4 Socket Head Bolt
3 870492 4 Lock Washer
4 842552 1 Adapter Ring
5 871143 2 O ring
6 872965 1 C/P Relief Valve Cartridge
7 872967 1 O ring/Back-up Ring Kit
8 870735 2 Hex Head Bolt
9 870494 2 Lock Washer
10 840132 1 Allen Plug
11 871908 1 O ring
12 842547 1 R/V Body
13 872961 4 Socket Head Bolt
13A 871204 4 Lock Washer
14 842532 1 Shuttle
15 842534 2 Spring Retainer
16 841533 2 Spring
17 871914 2 O ring
18 842533 2 Hex Plug
19 841458 2 Check Valve
20 841471 2 Check Spring
21 871920 2 O ring
22 841472 2 Hex Plug
23 872966 2 O ring/Back-up Ring Kit
24 872954 2 H/P Relief Valve Cartridge
25 871904 2 O ring
26 840146 2 Hex Plug
27 872967 1 O ring/Back-up Ring Kit
28 872955 1 L/P Relief Valve Cartridge
29 871112 1 O ring
30 871119 2 O ring
31 876120 2 O ring
32 876121 2 O ring
33 871117 1 O ring
34 842553 1 Torque Tube
35 870728 4 Socket Head Bolt
36 870464 4 Lock Washer
37 871916 1 O ring
38 872868 1 Hex Plug
39 871904 3 O ring
40 840146 3 Hex Plug
MADE IN THE USA
Original Equipment
15
GENERATION II 12.0
DYNAPOWER MODEL 12.0 PUMPVAL
SAE  E FLANGE & SHAFT
REF. NO. PART NO. REQ. NO. DESCRIPTION
41 842551 1 Cover
42 870095 1 Pin
43 842196 1 Gasket
44 871187 1 (Bearing Includes Item 80)
45 841948 1 Valve Plate
46 842482 1 Housing (Includes Items 47 & 48)
47 840946 8 Stud
48 870095 1 Roll Pin
49 871013 1 O ring
50 872868 2 Plug
51 871916 2 O ring
52 841061 2 Trunnion
53 870172 12 Hex Bolt
54 870491 12 Lock Washer
55 840948 2 Gasket
56 840947 2 Thrust Washer
57 872854 1 Retaining Ring
58 842076 1 Upper Spring Seat
59 840997 1 Spring
60 840973 1 Lower Spring Seat
61 841950 1 Cylinder Block
62 840964 1 Return Plate
63 830700 9 Piston Assy.
64 870213 4 Hex Bolt
65 840981 4 Tab Lock Washer
66 842943 2 Crescent Clip
67 842494 2 Crescent Bearing
68 840982 4 Spacer
69 840902 1 Wear Plate
70 870071 1 Roll Pin
71 840919 1 Cam
72 871186 2 Trunnion Bearing
73 842359 1 Lever Assy. (Includes Item 76)
74 840909 1 Key
75 870889 2 Cap Screw
76 871058 1 Pin
77 841033 1 Clevis Pin
78 871953 2 Retaining Ring
79 871947 1 Retaining Ring
80 1 See Item 44
81 871952 2 Retaining Ring
MADE IN THE USA
Original Equipment
16
GENERATION II 12.0
DYNAPOWER MODEL 12.0 PUMPVAL
SAE  E FLANGE & SHAFT
REF. NO. PART NO. REQ. NO. DESCRIPTION
82 842193 1 Shaft SAE  E
83 871950 1 Retaining Ring
84 871184 1 Bearing
85 875271 1 Square Ring
86 841105 1 Flange SAE  E
87 870494 8 Lock Washer
88 870568 8 Hex Nut
89 840008 1 Gasket
90 870107 1 Shaft Seal
91 840126 1 Seal Retainer
92 870480 6 Lock Washer
93 870150 6 Hex Bolt
SERVICE KITS
PART NO. FLANGE TYPE DESCRIPTION
894502 SAE  E O ring & gasket kit 1, 7, 11, 17, 21, 23, 25, 27, 29, 30,
31, 32, 33, 37, 39, 43, 49, 51, 55, 56, 85, 89 & 90
894098 SAE  E Shaft Seal Kit 89, 90 & 91
894357 SAE  E Rotating group 45, 57, 58, 59, 60,
61, 62, 63, 64, 65, 66, 67, 68 & 69
MADE IN THE USA
Original Equipment
17