DynaPower Generation II
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GENERATON II 21.0
DYNAPOWER MODEL 21.0 VARIABLE PUMP
SAE  F FLANGE & SHAFT
PARTS DRAWING
MADE IN THE USA
Original Equipment
1
GENERATON II 21.0
DYNAPOWER MODEL 21.0 VARIABLE PUMP
SAE  F FLANGE & SHAFT
REF. NO. PART NO. REQ. NO DESCRIPTION
1 870906 1 Pump (Gear)
2 872958 1 Charge Pump (Gerotor Obsolete)
3 870290 2 Hex Bolt
4 872950 4 Hex Bolt
5 870496 18 Lock Washer
6 872957 2 Socket Head Bolt
7 870282 4 Hex Bolt
8 870294 12 Hex Bolt
9 871159 1 O Ring
10 871154 1 O Ring
11 872859 2 Plug
12 871904 2 O Ring
13 841472 3 Plug
14 871920 3 O Ring
15 841471 2 Spring
16 841458 3 Plunger
17 871179 1 O Ring
18 842539 1 Charge Pump Adapter (Gerotor)
19 842537 1 Cover
20 842025 1 Plug
21 872869 1 Plug
22 871908 1 O Ring
23 841877 1 Spring
24 871326 1 Roll Pin
25 872956 1 Gasket
26 872749 1 Bearing (Includes Item 26A)
26A 1 See Item 26
27 842527 1 Valve Plate
28 842540 1 Housing
29 870095 1 Roll Pin
30 871011 1 O Ring
31 872868 2 Plug
32 871916 2 O Ring
33 841556 2 Trunnion
34 870194 12 Hex Bolt
35 870492 12 Lock Washer
36 872759 2 Gasket
37 841437 2 Thrust Washer
38 872755 1 Retaining Ring
39 841473 1 Upper Spring Seat
40 841453 1 Spring
41 841436 1 Lower Spring Seat
42 842160 1 Cylinder Block
43 842163 1 Return Plate
MADE IN THE USA
Original Equipment
2
GENERATON II 21.0
DYNAPOWER MODEL 21.0 PUMP
SAE  F FLANGE & SHAFT
REF. NO. PART NO. REQ. NO DESCRIPTION
44 830701 9 Piston Assembly
45 870235 4 Hex Bolt
46 872753 4 Tab Lock Washer
47 841442 2 Crescent Clip
48 850072 2 Crescent Bearing
49 842157 4 Spacer
50 842159 1 Wear Plate
51 870071 1 Roll Pin
52 841413 1 Cam
53 872758 2 Trunnion Bearing
54 842569 1 Lever Assembly
(Includes Item 57)
55 840909 1 Key
56 970889 2 Cap Screw
57 871058 1 Pin
58 841033 1 Clevis Pin
59 871953 2 Retaing Ring
60 871275 1 O Ring
61 842810 1 Flange SAE  F
841415 1 Old Style Flange
62 872757 1 Retaining Ring
63 872747 2 Retaining Ring
64 842541 1 Shaft SAE  F
65 872746 2 Bearing
66 841427 1 Sleeve
67A 841420 1 Spacer Shim
67B 841421 1 Spacer Shim
67C 841422 1 Spacer Shim
68 841423 2 Spacer
69 841416 2 Retaining Ring
70 872752 3 Retaining Ring
71 871247 1 O Ring
72 870904 1 Shaft Seal
73 841426 1 Seal Retainer
74 871904 1 O Ring
75 840146 1 Plug
76 871910 1 O Ring
SERVICE KITS
PART NO. FLANGE TYPE DESCRIPTION
894499 SAE  F O Ring & Gasket Kit: 10,14,17,25,30,32,36,37,60,71,72, & 74
894218 SAE  F Shaft Seal Kit: 71,72, & 73
894388 SAE  F Rotating Group Kit: 27,39,40,41,42,43,44,45,46,47,48,49, & 50
MADE IN THE USA
Original Equipment
3
GENERATON II 21.0
DYNAPOWER MODEL 21.0 FIXED MOTOR
SAE  F FLANGE & SHAFT
PARTS DRAWING
MADE IN THE USA
Original Equipment
4
GENERATON II 21.0
DYNAPOWER MODEL 21.0 FIXED MOTOR
SAE  F FLANGE & SHAFT
REF. NO. PART NO. REQ. NO 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
8A 842534 2 Retainer
9 842532 1 Shuttle Valve
10 872954 2 H.P. Relief Vlv. Cartridge includes item #11
11 872936 2 Back-Up/O Ring Kit
12 872955 1 L.P. Relief Vlv. Cartridge includes item #13
13 872935 1 Back-Up/O Ring Kit
14 871115 2 O Ring
14A 871113 1 O Ring
15 876119 2 O Ring
15A 876122 2 O Ring
16 871121 1 O Ring
16A 842530 1 Plug
17 870294 4 Hex Bolt
17A 870292 4 Hex Bolt
18 870496 8 Lock Washer
19 840146 2 Plug
20 871904 2 O Ring
21 842529 1 Cover
22 871326 1 Roll Pin
23 872956 1 Gasket
24 872749 1 Bearing (Includes Item #46)
25 842527 1 Valve Plate
26 842535 1 Housing
28 872755 1 Retaining Ring
29 841473 1 Upper Spring Seat
30 841453 1 Spring
31 841436 1 Lower Spring Seat
32 842160 1 Block
33 842163 1 Return Plate
34 830701 9 Piston Assembly
35 870225 4 Hex Bolt
36 872753 4 Tab Lock Washer
37 841442 2 Crescent Clip
37A 850072 2 Crescent Bearing
38 842158 4 Spacer
MADE IN THE USA
Original Equipment
5
GENERATON II 21.0
DYNAPOWER MODEL 21.0 FIXED MOTOR
SAE  F FLANGE & SHAFT
REF. NO. PART NO. REQ. NO DESCRIPTION
39 842159 1 Wear Plate
40 870071 1 Roll Pin
41 871275 1 Square Ring
42 842811 1 Flange SAE  F
830289 Old Style
43 870496 8 Lock Washer
44 870294 8 Hex Bolt
45 871947 1 Retaining Ring
46 1 Included with bearing #24
47 872747 2 Retaining Ring
48 842536 1 Shaft SAE  F
49 872746 2 Bearing
49A 841427 1 Sleeve (For Old Style Flange)
49B1 841420 1 Shim
49B2 841421 1 Shim
49B3 841422 1 Shim
49C 841423 2 Spacer
49D 841416 2 Retaining Ring
50 872752 3 Retaining Ring
51 871245 1 O Ring
52 870904 1 Shaft Seal
53 841426 1 Seal Retainer
SERVICE KITS
PART NO. FLANGE TYPE DESCRIPTION
SAE  F 894500 O Ring & Gasket Kit:
5,7,11,13,14,15,15A,16,20,23,36,41,51,52, & 60
SAE  F 894218 Shaft Seal Kit: 51,52, & 53
SAE  F 894431 Rotating Group Kit:
25,28,29,30,31,32,33,34,35,36,37,37A,38, & 39
MADE IN THE USA
Original Equipment
6
GENERATON II 21.0
DYNAPOWER MODEL 21.0 VARIABLE MOTOR
SAE  F FLANGE & SHAFT
PARTS DRAWING
MADE IN THE USA
Original Equipment
7
GENERATON II 21.0
DYNAPOWER MODEL 21.0 VARIABLE MOTOR
SAE  F FLANGE & SHAFT
PARTS DRAWING
DYNAPOWER MODEL 21.0 VARIABLE MOTOR
SAE  F FLANGE & SHAFT
REF. NO. PART NO. REQ. NO. 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
8A 842534 2 Retainer
9 842532 1 Shuttle Valve
10 872954 2 H.P. Relief Vlv. Cartridge inclides item #11)
11 872936 2 Back-Up/O Ring Kit
12 872955 1 L.P. Relief Vlv. Cartridge (includes item #13)
13 872935 1 Back-Up/O Ring Kit
MADE IN THE USA
Original Equipment
8
GENERATON II 21.0
DYNAPOWER MODEL 21.0 VARIABLE MOTOR
SAE  F FLANGE & SHAFT
REF. NO. PART NO. REQ. NO. DESCRIPTION
14 871115 2 O Ring
14A 871113 1 O Ring
15 876119 2 O Ring
15A 876122 2 O Ring
16 871121 1 O Ring
16A 842530 1 Plug
17 870294 4 Hex Bolt
17A 870292 4 Hex Bolt
18 870496 8 Lock Washer
19 840146 1 Plug
20 871904 2 O Ring
21 842529 2 Cover
22 871326 1 Roll Pin
23 872956 1 Gasket
24 872749 1 Bearing
25 842527 1 Valve Plate
26 852540 1 Housing
27 870095 1 Roll Pin
28 871011 1 O Ring
29 872868 2 Plug
30 871916 2 O Ring
31 841556 2 Trunnion
32 870194 12 Hex Bolt
33 870492 12 Lock Washer
34 872759 2 Gasket
35 841437 2 Thrust Washer
36 872755 1 Retaining Ring
37 841473 1 Upper Spring Seat
38 841453 1 Spring
39 841436 1 Lower Spring Seat
40 842160 1 Cylinder Block
41 842163 1 Return Plate
42 830701 9 Piston Assembly
43 870235 4 Hex Bolt
44 872753 4 Tab Lock Washer
45 841442 2 Crescent Clip
46 850072 2 Crescent Bearing
47 842157 4 Spacer
48 842159 1 Wear Plate
49 870071 1 Roll Pin
50 841413 1 Cam
MADE IN THE USA
Original Equipment
9
GENERATON II 21.0
DYNAPOWER MODEL 21.0 VARIABLE MOTOR
SAE  F FLANGE & SHAFT
REF. NO. PART NO. REQ. NO DESCRIPTION
51 872758 2 Trunnion Bearing
52 842569 1 Lever Assembly (Includes Item 55)
53 840909 1 Key
54 870889 2 Cap Screw
55 871058 1 Pin
56 841033 1 Clevis Pin
57 871953 2 Retaining Ring
58 871275 1 Square Ring
59 842810 1 Flange SAE  F
841415 Old Style
60 870496 8 Lock Washer
61 870294 8 Hex Bolt
62 872757 1 Retaining Ring
63 1 See Item 24
64 872747 2 Retaining Ring
65 842851 1 Shaft SAE  F
66 872746 2 Bearing
67 841427 1 Sleeve
67A1 841420 1 Spacer Shim
67A2 841421 1 Spacer Shim
67A3 841422 1 Spacer Shim
67B 841423 2 Spacer
67C 841416 2 Retaining Ring
68 872752 3 Retaining Ring
69 871247 1 O Ring
70 870904 1 Shaft Seal
71 841426 1 Seal Retainer
72 870174 2 Hex Bolt
73 841515 0 Degree Cam Stop
841516 5 Degree Cam Stop
841517 7 Degree Cam Stop
841518 10 Degree Cam Stop
SERVICE KITS
PART NO. FLANGE TYPE DESCRIPTION
894501 SAE  F O Ring & Gasket Kit: 5, 7, 11, 13, 14, 15, 15A, 16, 20, 23,
30, 34, 35, 58, 69, & 70
894218 SAE  F Shaft Seal Kit: 68,70,71
894388 SAE  F Rotating Group Kit: 25, 37, 38, 39, 40, 41, 42, 43, 44, 45,
46, 47, & 48
MADE IN THE USA
Original Equipment
10
GENERATON II 21.0
DYNAPOWER MODEL 210 PUMPVAL
SAE  F FLANGE & SHAFT
PARTS DRAWING
MADE IN THE USA
Original Equipment
11
GENERATON II 21.0
DYNAPOWER MODEL 21.0 PUMPVAL
SAE  F FLANGE & SHAFT
PARTS DRAWING
MADE IN THE USA
Original Equipment
12
GENERATON II 21.0
DYNAPOWER MODEL 21.0 PUMPVAL
SAE  F 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 842548 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 841204 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 5 O Ring
26 840146 5 Hex Plug
27 872967 1 O Ring/Back-Up Ring Kit
28 872955 1 L/P Relief Valve Cartridge
29 871114 1 O Ring
30 876119 2 O Ring
31 876120 2 O Ring
32 876122 2 O Ring
33 871120 1 O Ring
34 842550 1 Torque Tube
35 870282 4 Socket Head Bolt
36 870496 4 Lock Washer
37 871920 1 O Ring
38 841472 1 Hex Plug
MADE IN THE USA
Original Equipment
13
GENERATON II 21.0
DYNAPOWER MODEL 21.0 PUMPVAL
SAE  F FLANGE & SHAFT
REF. NO. PART NO. REQ. NO DESCRIPTION
39 870496 4 Lock Washer
40 870294 4 Hex Bolt
41 842545 1 Cover
42 871326 1 Pin
43 872956 1 Gasket
44 872749 1 (Bearing includes Item 83)
45 842527 1 Valve Plate
46 852540 1 Housing (Includes Item 47)
47 870095 1 Roll Pin
48 871011 1 O Ring
49 872868 2 Plug
50 871916 2 O Ring
51 841556 2 Trunnion
52 870194 12 Hex Bolt
53 870492 12 Lock Washer
54 872759 2 Gasket
55 841437 2 Thrust Washer
56 872755 1 Retaining Ring
57 841473 1 Upper Spring Seat
58 841453 1 Spring
59 841436 1 Lower Spring Seat
60 842160 1 Cylinder Block
61 842163 1 Return Plate
62 830701 9 Piston Assembly
63 870235 4 Hex Bolt
64 872753 4 Tab Lock Washer
65 841442 2 Crescent Clip
66 850072 2 Crescent Bearing
67 842157 4 Spacer
68 842159 1 Wear Plate
69 870071 1 Roll Pin
70 841413 1 Cam
71 872758 2 Trunnion Bearing
72 842569 1 Lever Assembly
(Includes Item 75)
73 840909 1 Key
74 870889 2 Cap Screw
75 871058 1 Pin
76 841033 1 Clevis Pin
MADE IN THE USA
Original Equipment
14
GENERATON II 21.0
DYNAPOWER MODEL 21.0 PUMPVAL
SAE  F FLANGE & SHAFT
REF. NO. PART NO. REQ. NO DESCRIPTION
77 871953 2 Retaining Ring
78 871275 1 Square Ring
79 842810 1 Flange SAE  F
79A 841415 1 Old Style
80 870496 8 Lock Washer
81 870294 8 Hex Bolt
82 872757 1 Retaining Ring
83 1 See Item 44
84 872747 2 Retaining Ring
85 842549 1 Shaft SAE  F
86 872746 2 Bearing
87 841427 1 Sleeve
87A1 841420 1 Spacer Shim
87A2 841421 1 Spacer Shim
87A3 841422 1 Spacer Shim
87B 841423 2 Spacer
87C 841416 2 Retaining Ring
88 872752 3 Retaining Ring
89 871247 1 O Ring
90 870904 1 Shaft Seal
91 841426 1 Seal Retainer
SERVICE KITS
PART NO. FLANGE TYPE DESCRIPTION
894484 SAE  F O Ring & Gasket Kit: 1, 5, 7, 11, 17, 21, 23, 25, 27, 29, 30,
31, 32, 33, 37, 43, 78, 89, & 90
894218 SAE  F Shaft Seal Kit: 89,90, & 91
894388 SAE  F Rotating Group Kit: 45, 56, 57, 58, 59, 60, 61, 62, 63, 64,
66, 67, & 68
MADE IN THE USA
Original Equipment
15