Appendix E—Parts Details for Models 521 and 1021
Ref
No.
Part No. Description Qty.
1.
1162-2 Cam (521) 1
1201-2 Cam (1021) 1
2.
2832 Case (521) 1
2841 Case (1021) 1
3.
1172-2.5 Flange—2-1/2" standard (521) 1
1172-2 Flange—2" standard (521) 1
1172-1.5 Flange—1/2" NPT, optional (521) 1
1172-15 S Flange—1/2" Weld, optional (521) 1
1172-2 Flange—2" NPT, optional (521) 1
1172-2S Flange—2" Weld, optional (521) 1
1172-2.5 Flange—2-1/2" NPT, optional (521) 1
1172-2.5S Flange—2-1/2" Weld, optional (521) 1
1206-34 Flange—3" standard (1021) 2
1206-3S Flange—3" Weld, optional (1021) 2
1206-4 Flange—4" NPT, optional (1021) 2
1206-4S Flange—4" Weld, optional (1021) 2
4.
2-234_
a
Flange O-ring (521) 2
2-245_
a
Flange O-ring-3" (1021) 2
2-249_
a
Flange O-ring-4" (1021) 2
5. 2-112 _
a
Adjusting screw O-ring 1
6. 2590 Flush plug—1/8" NPT 1
7. 2252 Relief valve adjusting screw 1
8.
1174 Valve cap (521) 1
1207 Valve cap (1021) 1
9.
1242-X Relief valve spring and guide (521) 1
1227 Relief valve spring guide (1021) 1
10.
2-224_
a
Relief valve cap O-ring (521) 1
2-228_
a
Relief valve cap O-ring (1021) 1
11.
1241 Relief valve (521) 1
1224 Relief valve (1021) 1
12.
1242 Relief valve spring (521) 1
1226 Relief valve spring (1021) 1
13.
1170 Cam key (521) 1
1309 Cam key (1021) 1
14.
1168-7 Blade (521) 10
1308-9 Blade (1021) 10
15.
1166 -1X1R Rotor and shaft assembly (521) 1
1208-1X1R Rotor and shaft assembly (1021) 1
16. 1358 Grease seal 2
17. 1164-1 Bearing cap 2
18. 2158 Grease zerk—1/8" NPT 2
19. 1769 Bearing housing 2
20. 1343 Seal vent relief fitting—1/8" NPT 2
Material Code
A Buna-N
B Neoprene
®c
D Viton
®c
E PTFE
a
_ denotes material code. See material code chart
for details.
b
Not sold separately. Available with 1769-X_6
a
,
and 1769-XR_6
a
only.
c
Registered trademark of the DuPont company.
d
See sideplate replacement instructions.
Ref
No.
Part No. Description Qty.
21A.
1769-X_6
a
Complete seal assembly kit.
Includes bearing housing, seat
adapter plate, bearings, retainer
rings, seal, and O-rings.
2
21B.
1769-XR _6
a
Seal assembly field replacement
kit. Includes only the seal and
O-rings.
2
22.
1163-2
d
Sideplate (521) 2
1209-1
d
Sideplate (1021) 2
23.
1161- 4 Head (521) 2
1205-4 Head (1021) 2
24.
2754-X Roller bearing—complete 2
2755 Bearing inner race 2
2754 Bearing outer race 2
25. 2760-244 Retainer ring 2
26. 1343 Grease relief fitting—1/8" NPT 2
27. 2-128A Shaft O-ring (Buna-N only) 2
28. 1882 Seat adapter plate 2
29. 2-240_
a
Adapter plate O-ring 2
30.
2-261_
a
Case O-ring (521) 2
2-268_
a
Case O-ring (1021) 2
31. 2270 Key—1/4" 2
32. 2949 Nameplate 1
33. 3442 Plu g—1/4" N PT 1
34.
7001-031NC125A Hex head bolt—5/16-18x1-1/4 (521) 4
7001-037NC125A Hex head bolt—3/8-16x1-1/4 (1021) 4
35.
7001-037NC125A Hex head bolt—3/8-16x1-1/4 (521) 28
7001-037NC125A Hex head bolt—3/8-16x1-1/4 (1021) 32
36. 7001-037NC150A Hex head bolt—3/8-16x1-1/2 8
37.
Not sold
separately
b
Retainer 2
38.
Not sold
separately
b
Seal seat 2
39. 2-227_
a
Seal seat O-ring 2
40. 2159 Lubricap #2 2
41. 1359 Lubrication instruction tag 2
42. 7003-004DR0198
Round head plated drive screw—
4 x 3/16
2
32
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