Valve Seat Ring
Repair / Checking
A5.05. 01.08.02.01
M20
en / 15.03.2001 IB023062 1/5
01
Ĺ
See also: 01.07.01.nn, 01.08.01.nn
Spare parts list: B1.05.01.2.2107
Time requirement: 0 Pers./ 0,00 h
Personnel qualification: Chief engineer, skilled engine hand
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Operating medium: Heavy fuel and distillate fuel
Tools:
Valve refacer W1 * 2.9224 A
Valve seat milling machine W2 2.9224 C
* not available as figure
Auxiliary material:
Magnifying glass with light (8-fold magnification)
Diamond paste Dp 30/10 - 15 µm **
Thinner DIAPLASTOL **
** or a product of equal standard
Note:
In case irregular contact reflections or pittings are indicated on the sealing faces of the
valve seat/valve face, both sealing faces are to be refinished in any case.
New or refinished valve seats are to be ground in accordance with operating sequence 4.
Refinishing of the seats may be necessary in the following cases:
• after extended operating times
• in the case of negative result, e.g. damaged valve faces, deep scars, uneven contact
reflections of the valve seat/face (Fig. 1 and 2).
Fig. 1
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