Explanation of Sun Hydraulics Date Code
Sun stamps a date code on all products to provide a means for tracking their production history. Date codes are stamped on one of the hex body flats on all cartridges, and on one surface of all standard bodies.
Beginning 1 January 1994, Sun added a second line to its present date code system to identify the location where each individual product was manufactured.
1986 to Present |
Location Code Two digit, alpha-numeric code representing location of manufacture. |
| MONTH | DAY | |||
| A = January | G = July | A = 1st | L = 12th | W = 23rd |
| B = February | H = August | B = 2nd | M = 13th | X = 24th |
| C = March | I = September | C = 3rd | N = 14th | Y = 25th |
| D = April | J = October | D = 4th | O = 15h | Z = 26th |
| E = May | K = November | E = 5th | P = 16th | 5 = 27th |
| F = June | L = December | F = 6th | Q = 17th | 6 = 28th |
| G = 7th | R = 18th | 7 = 29th | ||
| H = 8th | S = 19th | 8 = 30th | ||
| I = 9th | T = 20th | 9 = 31st | ||
| J = 10th | U = 21st | |||
| K = 11th | V = 22nd | |||
Date Codes between January 1, 1970 and December 31, 1985
(Numbered 1 through 64)
| Year | Jan-Mar | Apr-Jun | Jul-Sep | Oct-Dec |
|---|---|---|---|---|
| 1970 | 1 | 2 | 3 | 4 |
| 1971 | 5 | 6 | 7 | 8 |
| 1972 | 9 | 10 | 11 | 12 |
| 1973 | 13 | 14 | 15 | 16 |
| 1974 | 17 | 18 | 19 | 20 |
| 1975 | 21 | 22 | 23 | 24 |
| 1976 | 25 | 26 | 27 | 28 |
| 1977 | 29 | 30 | 31 | 32 |
| 1978 | 33 | 34 | 35 | 36 |
| 1979 | 37 | 38 | 39 | 40 |
| 1980 | 41 | 42 | 43 | 44 |
| 1981 | 45 | 46 | 47 | 48 |
| 1982 | 49 | 50 | 51 | 52 |
| 1983 | 53 | 54 | 55 | 56 |
| 1984 | 57 | 58 | 59 | 60 |
| 1985 | 61 | 62 | 63 | 64 |