Test values for the valves cases |
Number | Designation | Engine 904.9, 906.9 | Engine 924.9, 926.9 | ||
BE05.30-B-1004-03C | Diameter (B) of the exhaust valve case housing in the head | Normal | mm | 40,000...40,025 | 40,000...40,025 |
Repair I | mm | 40,300...40,325 | 40,300...40,325 | ||
repair II | mm | 40,500...40,525 | 40,500...40,525 |
001 589 53 21 00
Dial gage
1 | Machine the intake and/or exhaust valve seat housing in multiple passes, determining the "G" measure for the cutting tool, until the desired finishing diameter (B) is achieved . |
B05.30-0002-02
Measurement calculation G: (B + F):
Example:
Diameter B = 35 mm (housing)
Diameter F = 10 mm (guide)
Measure G = (35 + 10): 2 = 22,5
When machining the housing, use the valve guide as the centering reference to ensure the housing concentricity relative to the valve guide.
2 | Check the diameter (B) of the intake and/or exhaust valve seat housing with the internal diameter meter and the dial indicator. |
Unconditionally ensure the interference between the seat and the housing, keeping the housing diameter (B) within the tolerances for each repair level. |
B05.30-0004-01