Usage:
February 24, 2002
O-34
| Priority |
PRODUCT IMPROVEMENT PROGRAM FOR REPLACING THE TUBE ASSEMBLY OF THE MEDIUM PRESSURE CIRCUIT ON CERTAIN 320B AND 322B EXCAVATORS |
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| 5057 |
PI30231
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NOTE: The information supplied in this service letter may not be valid after the termination date of this program. Do not perform the work outlined in this Service Letter after the termination date without first contacting your Caterpillar product analyst.
COMPLETION DATE |
TERMINATION DATE |
| August 31, 2002 | February 28, 2003 |
PROBLEM
The tubes of the medium pressure circuit need to be replaced on certain 320B and 322B Excavators. The medium pressure circuit tubes may leak at the weld joint of the connectors. The tubes of the lines group boom and the lines group stick have to be replaced by new tube assemblies.AFFECTED PRODUCT
320BLN 3YZ1510, 1518, 1521, 1533-1535, 1538, 1540, 1541, 1544, 1550, 1555-1558, 1568-1571, 1574, 1590, 1592, 1597, 1604, 1605
320BS 5MS903, 931, 934, 935, 944, 948, 950, 951, 953, 954
320BL 7JR3307, 3311, 3314, 3320, 3323, 3327,
3334, 3336, 3337, 3339, 3346, 3349, 3356, 3358, 3359, 3362-3366, 3369,
3370, 3372, 3375, 3376, 3384-3388, 3393, 3395-3398, 3400, 3402, 3406-3407,
3409-3418, 3426-3431, 3433-3437, 3443, 3446, 3450, 3452-3456, 3458, 3461,
3464, 3492, 3494, 3501-3503, 3507, 3515, 3516, 3520, 3522, 3526, 3531-3534,
3537
320B 1XS1105,1106,1107
***** Group 3 - 322B equiped with lines group Reach boom *****
322BLN 1ZS916-918, 920-923, 925-927, 930, 933, 936,
322BL 2ES1126-1127, 1130-1131, 1133-1136
***** Group 4 - 320B equiped with lines group Stick R2.9 *****
320B 1XS1108-1111, 1115-1118
320BL 7JR3307, 3311, 3314, 3327, 3336, 3337,
3339, 3346, 3349, 3356-3359, 3363-3366, 3375-3376, 3393, 3396-3398, 3400,
3402, 3406-3407, 3413-3414, 3417-3418, 3426-3431, 3433-3436, 3442-3443,
3446, 3450, 3452, 3453, 3456-3458, 3461-3464, 3467, 3472, 3477, 3482, 3487,
3492-3494, 3498, 3501-3504, 3507, 3515, 3520, 3522, 3531-3533, 3537
***** Group 5 - 320B equiped with lines group Stick M2.4 *****
320B 1XS1105-1107
320BLN 3YZ1542-1554, 1577, 1580-1581, 1587-1588, 1600
320BS 5MS00924,947,949,955
***** Group 6 - 320B equiped with lines group Stick R2.5 *****
320BLN 3YZ1510, 1518, 1521, 1533-1535, 1538,1540-1541,
1544,
1555-1558,1568-1571, 1574, 1590
320BS 5MS931, 934-935, 944, 948, 950-951, 953-954
320BL 7JR3320, 3323, 3334, 3362, 3369-3370,
3372, 3388, 3395, 3409-3412, 3415-3416, 3437, 3454-3455, 3526, 3534
***** Group 7 - 322B equiped with lines group Stick R2.5 *****
322BLN 1ZS921-923, 930, 933
322BL 2ES1130
***** Group 8 - 322B equiped with lines group Stick R2.9 *****
322BLN 1ZS916-918, 920, 925-927, 932, 936
322BL 2ES1126-1127, 1131, 1133-1136
PARTS NEEDED
1 ? 1538829 Tube Assembly
1 ? 1538835 Tube Assembly
1 ? 1538830 Tube Assembly
1 ? 1538836 Tube Assembly
1 ? 2035712 Tube Assembly
1 ? 1538837 Tube Assembly
***** Group 2 *****
1 ? 1795007 Tube Assembly
1 ? 1795015 Tube Assembly
1 ? 1795008 Tube Assembly
1 ? 1795016 Tube Assembly
1 ? 1795009 Tube Assembly
1 ? 1795017 Tube Assembly
***** Group 3 *****
1 ? 1795101 Tube Assembly
1 ? 1795109 Tube Assembly
1 ? 1795102 Tube Assembly
1 ? 1795110 Tube Assembly
1 ? 1879961 Tube Assembly
1 ? 1795111 Tube Assembly
***** Group 4 *****
2 ? 1923692 Tube Assembly
***** Group 5 *****
- 2 ? 1927577 Tube Assembly
- 2 ? 1927577 Tube Assembly
- 2 ? 1880049 Tube Assembly
2 ? 1795127 Tube Assembly
ACTION REQUIRED
Replace tubes of medium pressure circuit by new ones. See the attached illustrations for each group.SERVICE CLAIM ALLOWANCES
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PARTS DISPOSITION
Handle the parts in accordance with your Warranty Bulletin on warranty parts handling.MAKE EVERY EFFORT TO COMPLETE THIS PROGRAM
AS SOON AS POSSIBLE.
Attach. (1-Rework Procedure)
Illustration 2 - Group 2
Illustration 4 - Group 4
Illustration 6 - Group 6
Illustration 7 - Group 7
Illustration 8 - Group 8