AR05.30-T-4202BB | Grind valves | 2.7.01 |
ENGINE 457.941 in MODELNMB613.368
ENGINE 457.942 in MODEL NMB671.015 /020 /021 /030 /042 /332 /333
ENGINE 457.944 in MODEL NMB613.358 /367 /388
A05.30-0009-06
1 Valve
2 Valve grinding machine
A Valve seat angle
B Valve disk
C Valve length
E Valve stem
F Valve seat width at valve disk
G Valve seat surface
H Machining dimension
1 | Clean valve (1) and remove adhering carbon if necessary | ||
2 | Clamp valve (1) in place | The valve must be clamped in the valve grinding machine (2) as close as possible behind the valve disk in order to avoid any interfering vibrations. | |
3 | Set valve seat grinding angle at valve grinding machine (2) | ||
4 | Slowly move valve (1) with the infeed toward the rotating grinding disk until it comes into contact with the seat surface of the valve (1) | ||
5 | Continue grinding with a small infeed until the entire circumference of the valve seat is smooth and free of chatter marks | The measurements must not be less than the specified dimensions. | |
Valve disk (B) | |||
Valve seat width on valve disk (F) | |||
Valve stem (E) | |||
Machining dimension (H) of inlet valve seat face in relation to valve seat face (G) | |||
Exhaust valve seat surface machining dimension (H) related to valve seat surface (G). | |||
Concentricity of valve seat to valve stem | |||
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6 | Remove valve (1) from valve grinding machine | ||
7 | Mount valve (1) at the valve grinding machine (2) and face-grind the valve stem end | The valve length (C) must not be less than the specification. |
Inspection data of valves
Number | Designation | Engine 457.9 | |||
BE05.30-N-1004-01J | Valve seat angle "A" | Intake | ° | 30 | |
Outlet | ° | 45 | |||
BE05.30-N-1005-01J | Valve disk Ø "B" | Intake | mm | 45.4...45.6 | |
Outlet | mm | 40.9...41.3 | |||
BE05.30-N-1006-01J | Seat width at valve plate "F" | Intake | mm | 3,5...4,5 | |
Outlet | mm | 3,5...4,5 | |||
BE05.30-N-1007-01J | Valve length "C" | Intake | mm | 145,0 | |
Outlet | mm | 145,0 | |||
BE05.30-N-1008-01J | Valve stem Ø "E" | Intake | mm | 8.935...8.950 | |
Outlet | mm | 8.925...8.940 | |||
BE05.30-N-1009-01J | Inlet valve seat surface machining dimension "H" related to | Dimension" G" | mm | 42,0 | |
when new | Dimension "H" | mm | 3.1...3.3 | ||
Machining | Dimension "H" | mm | 2,9 | ||
BE05.30-N-1010-01J | Éxhaust valve seat surface machining dimension "H" related to | Dimension" G" | mm | 39,0 | |
when new | Dimension "H" | mm | 2.8...3.1 | ||
Machining | Dimension "H" | mm | 2,3 | ||
BE05.30-N-1011-01J | Concentricity of valve seat to valve stem | Intake | mm | 0,03 | |
Outlet | mm | 0,03 | |||
363 589 02 21 00
Dial gage holder
Dial gage
001 589 53 21 00
Workshop equipment
WE58.40-Z-1008-21A | Valve grinding machine |