- Excavator:
- 320C (S/N: ANB1-UP; MAB1-UP; PAB1-UP; AMC1-UP; MAC1-UP; PAC1-UP; EAG1-UP)
- 320D (S/N: PHX1-UP)
- 321D (S/N: NAS1-UP)
- 322C (S/N: BKJ1-UP; HEK1-UP)
- 324D (S/N: LAB1-UP; JJG1-UP)
- 325C (S/N: CRB1-UP; BTD1-UP; BFE1-UP; BMM1-UP; BKW1-UP)
- 325D (S/N: PAL1-UP; A3R1-UP; SCR1-UP)
- 328D (S/N: GTN1-UP)
- 329D (S/N: MNB1-UP; JHJ1-UP)
- 330C (S/N: CYA1-UP; KDD1-UP; JNK1-UP; CAP1-UP; GKX1-UP; DKY1-UP)
- 330D (S/N: NBD1-UP; B6H1-UP; THJ1-UP; MWP1-UP; HAS1-UP)
- 336D (S/N: PRF1-UP; W3K1-UP)
The new software in Table1 is available for the direct replacement of the former software on the models that are listed. The new software is adaptable to machines that are configured with Tool Control System 14 and a hydraulic thumb.
External force on the thumb cylinder creates excessively high pressure in the hydraulic system. The setting for the relief valve controls the line relief pressure for the thumb cylinder. The new software keeps the relief valves activated in the tool control system for the thumb cylinder. The new software prevents failures of the thumb cylinder.
Install the new software if your machine is configured with Tool Control System 14 and a hydraulic thumb. The new software is available in the form of a flash file through Caterpillar Service Information System (SIS).
Note: To obtain the correct software, use the "Flash Filename" search tool. Refer to Table 1 for the software part number. Searching by machine Serial Number Prefix alone may not find the software listed.
New Software     | ||
---|---|---|
Model     | New Part Number     | Former Part Number     |
320C     | 309-5809     | 211-5559     |
322C     | 309-5810     | 211-5567     |
325C     | 309-5811     | 211-5577     |
330C     | 309-5812     | 211-5552     |
320D     | 309-5813     | 309-5758     |
321D     | 327-7480     | 327-7430     |
324D     | 309-5814     | 309-5715     |
325D/329D     | 309-5815     | 309-5721     |
328D     | 327-7481     | 327-7498     |
330D     | 309-5816 (1) 327-7537 (2)     |
297-4427     |
336D     | 327-7424     | 309-5816     |
( 1 ) | Use this software with NBD841-UP, B6H631-UP, THJ307-UP, MWP2132-UP, and HAS1-UP. |
( 2 ) | Use this software with NBD1-840, B6H1-630, THJ1-306, and MWP1-2131. |