New Sound Suppression Baffle Group is Now Available for Certain H Series and K Series Wheel Tractor-Scrapers {7050, 7051}
- Wheel Tractor-Scraper:
- 621H (S/N: DBK1-UP; HKK1-UP; NYY1-UP; EAZ1-UP)
- 621K (S/N: WTA1-UP)
- 623H (S/N: EJD1-UP; DBF1-UP)
- 623K (S/N: WTB1-UP)
- 627H (S/N: LCT1-UP; DBW1-UP)
- 627K (S/N: WTC1-UP)
ReferenceSpecial Instruction, REHS9825, "Instructions for Installing a New Sound Suppression Baffle Group on Certain H Series and K Series Wheel Tractor-Scrapers".
Description of Change: The location of the cover that is positioned below the cab has been changed. The cover has been recessed in the opening under the cab to prevent material from directly contacting the edges of the cover.
For a complete procedure to perform this improvement see the Special Instruction referred to above. This special instruction can be found on the Caterpillar Service Information System (SIS) and through the normal literature distribution system at your local Cat dealer.
Adaptable To: This Improvement is effective with the following serial numbers.
Show/hide table
| Sales Model | Adaptable to Machines | Effective in Production with Machines |
| 621H | S/N:DBK1-131 | S/N:DBK132-UP- |
| S/N:HKK1-139 | S/N:HKK140-UP | |
| S/N:NYY1-129 | S/N:NYY130-UP | |
| S/N:EAZ1-125 | S/N:EAZ126-UP | |
| 621K | S/N:WTA1-113 | S/N:WTA114-UP |
| 623H | S/N:EJD1-105 | -S/N:EJD106-UP |
| S/N:DBF1-175 | -S/N:DBF176-UP | |
| 623K | S/N:WTB1-155 | S/N:WTB156-UP |
| S/N:WTM1-105 | S/N:WTM106-UP | |
| 627H | S/N:DBW1-348 | -S/N:DBW349-UP |
| S/N:LCT1-115 | S/N:LCT116-UP | |
| 627K | S/N:WTC1-102 | S/N:WTC103-UP |
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