Size
35 lb
120 lb
400lb
Pump Serial Number Table – Manufacturing Dates and Versions
(First two digits = YEAR)(Letter = MONTH A=Jan, B=Feb, C=Mar)
Serial Number Range
00G to 04J
04K to 08C
08D to Current
Pump Size
Description
For 332, 334, 402050
Air motor seals
For 332, 334, 402050
Air Motor Repair Kit
For 332, 334, 402050
Reversing Mech.
For 332, 334, 402050
Grease packing
For 332, 334, 402050
Upper valve
For 332, 334, 402050
Foot valve
For 332, 334, 402050
Muffler and Filter
For 332, 334, 402050
Outlet valve
TOTAL Upgrade downtube kit to convert pumps 04K-08C to 08D version – See Drawing № 3
For 402050
Total Upgrade
For 332
Total Upgrade
For 334
Total Upgrade
Part №
Description
740974
Air motor seals
740974.001
Air motor seals
740974.002
Air motor seals
740973
Reversing Mech.
740975
Grease packing
740980
Grease packing
740967
Grease packing
740978
Upper valve
740978.002
Upper valve
740976
Foot valve
740976.001
Foot valve
740976.002
Foot valve
740977
Muffler and Filter
740631
Outlet valve
740963
Outlet valve
740979
Air motor repair kit
740983
Total Upgrade Kit
740981
Total Upgrade Kit
740982
Total Upgrade Kit
840806
12
R12/09
Samson Corporation-Swannanoa, NC 28778 800-311-1047
Part Number Tables
Pump Size and Model Number Table
Samoa Model Number
402050
402000
402025
MFG Date Range
June 2000 to October 2004
November 2004 to March 2008
April 2008 to Current
Pump Kit Table by Serial Number
Pumps Between
Kit
(07/00-10/04)
(00G - 04J)
740974
740979
740973
740975
Not Used
740976
740977
740631
Will not fit
Will not fit
Will not Fit
Repair Kits Contents Table
Ref. Drawing
№
2
1
1
1, 2
2
1
1
1
1
2
1
1
1, 2
2
1
1
25, 29, 30, 33, 39, 24, 41, 54, 55, 51, 42, 53, 74, 56, 45, 46,
3
47, 57, 58, 59, 60, 57, 61, 48, 49, 62, 50, 63, 64, 65, 66, 67,
25, 29, 30, 33, 39, 24, 41, 54, 55, 51, 42, 53, 74, 56, 45, 46,
3
47, 57, 58, 59, 60, 57, 61, 48, 49, 62, 50, 63, 64, 65, 66, 67,
25, 29, 30, 33, 39, 24, 41, 54, 55, 51, 42, 53, 74, 56, 45, 46,
3
47, 57, 58, 59, 60, 57, 61, 48, 49, 62, 50, 63, 64, 65, 66, 67,
Samson Model Number
402050
Version Notes
Single Action, no grease inlet screen.
Upgrade to Double Action, grease inlet
screen included, rotating air motor.
Ratio increased, stroke increased, dead
air space eliminated from air motor to
decrease air consumption.
Pumps Between
Pumps From
(11/04-04/08)
(04/08-Current)
(04K - 08C)
(08D-Current)
740974.001
740979
740973
740980
740978
740976.001
740977
760963
740983
740981
740982
Reference №
4, 6, 7, 10, 12, 24, 26, 30, 31
6, 26, 31
6, 26, 31
16, 21, 22
26, 34, 36, 42
41, 42, 45, 45, 46, 47, 48, 49, 53, 74
42, 45, 46, 47, 48, 49, 53, 74
51, 54, 55, 56, 57, 58, 59, 60, 61, 67
51, 54, 55, 56, 57, 58, 59, 60, 61, 67
34, 45, 46, 47, 48, 49, 50, 51, 52
63, 64, 65, 66, 67, 68, 70, 71
63, 64, 65, 66, 67, 68, 70, 71
13, 14, 18
44
44
1, 3, 4, 5, 6, 7, 10, 11, 12, 24, 25, 29, 30, 33
68, 51, 69, 52, 70, 71, 72, 73
68, 51, 69, 52, 70, 71, 72, 73
68, 51, 69, 52, 70, 71, 72, 73
www.samsoncorporation.com
332
334
740974.002
740979
740973
740967
740978.002
740976.002
740977
760963
