- Wheel Tractor-Scraper:
- 627F (S/N: 4YK1-UP)
- 621F (S/N: 5JK1-UP; 9NL1-UP)
- 621G (S/N: CEP1-UP)
- 627G (S/N: AYK1-UP; CEZ1-UP)
Description of Change: Two plates have been added to the mounts for the ejector cylinder. The two plates decrease the stress on the mounts for the ejector cylinder. The two plates also improve the service life of the mounts.
Adaptable To: Two 235-5770 Plates have been added to the frame in order to improve the service life of the mounts for the ejector cylinder. Use the procedure that follows in order to fabricate the 235-5770 Plates. Use the procedure that follows in order to install the 235-5770 Plates .
The two 235-5770 Plates are effective with the following machines:
- 621G (S/N: CEP300-UP)
- 627G (S/N: CEZ403-UP)
- 621F (S/N: 5JK1-UP; 9NL1-UP)
- 621G (S/N: CEP1-299)
- 627F (S/N: 4YK1-UP)
- 627G (S/N: AYK1-UP; CEX1-402)
Fabrication and Installation of the 235-5770 Plates
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| Illustration 1 | g01072499 |
Dimension (A) 249.5 mm (9.82 inch). Dimension (B) 63.5 mm (2.50 inch). Dimension (C) 12.0 mm (0.47 inch). Dimension (D) 90.0 mm (3.54 inch). Dimension (E) 213.2 mm (8.39 inch). Dimension (F) 12.0 mm (0.47 inch). Dimension (G) 250.0 mm (9.84 inch). Dimension (H) 266.1 mm (10.48 inch). Angle (J) 93.7 degrees. | |
- Fabricate the two 235-5770 Plates, as shown. Use 10.0 mm (0.39 inch) structural steel with a 207 to 450 MPa (30023 to 35267 psi) rating.
- Install plates (1) with weld (W1). The outside edges of plates (1) should be located 15.0 ± 1.0 mm (0.59 ± 0.04 inch) from the outside edge of the tube.
Note: For more information on welding, refer to Service Guide, SEBD0512, "Service Welding Guide".
Show/hide tableTable 1 Weld Tolerances Weld Description (W1)
6.0 mm (0.24 inch) continuous fillet weld
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| Illustration 2 | g01072554 |
Dimension (K) 15.0 ± 1.0 mm (0.59 ± 0.04 inch). | |
- Route air lines (2) for the left, rear brake actuator through the holes in plates (1) .
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| Illustration 3 | g01072819 |