- Mini Hydraulic Excavator:
- 305.5 (S/N: DCK1-UP; CXZ1-UP)
Description of Change: The front track idler has been improved. The heat treat process has been changed. The former heat treat process could result in the track idler over hardening. Excessive hardening can lead to cracking. This improved idler is effective with parts that have a date code of October 2006 or later.
Adaptable To: The improved 240-6304 Front Track Idler is adaptable to all machines. The part number on the improved front track idler has not changed. Improved track idlers can be identified by the date code that is cast into the part.
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| Illustration 1 | g01594013 |
The first two digits are the year of manufacture. The letter represents the month of the year. Date codes start with A for January. The last digit is a lot number. The date code above stands for March 2008. The date code for the improved idlers should be October 2006 or a later date.
Note: Exact serial numbers were not recorded. A few earlier machines may have been equipped with idlers that were hardened to the latest specification. Use the date code to determine if the idler is hardened to the latest specification.
| Effectivity and Adaptability of Improved Front Track Idler | ||
| Model | Effectivity | Adaptability |
| 305.5 | S/N:DCK387-Up | S/N:DCK1-386 |
| S/N:CXZ413-Up | S/N:CXZ1-412 | |