1
2
3
4
Refacing valves
100
Fig. 1
Apply abrasive paste to tapered area on the valve
seat.
Oil valve guide and insert valve.
Fig. 2
Use valve refacer to reface valve seat by applying
moderate axial pressure and describing a turning
motion.
Caution:
Keep valve stem and valve guide free of
abrasive paste.
Fig. 3
The valve seat must have a faultless, closed grind-
ing pattern
Á
.
The grinding pattern width is correct if the valve
seat insert is in order.
1 Valve tapered area
2 Valve seat
Fig. 4
1 Valve seat insert
2 Valve
3 Valve seat good
4 Valve seat too wide
Note:
Valve seats which are too wide tend to
accumulate coking residues,
- valves become leaky -
Valve seats that are too small prevent
rapid discharge of heat from the valve
disc to the cylinder head,
- valves burn -
2
1
1
2
1
2
3
4
Summary of Contents for D 2866 LUE 602
Page 1: ......
Page 2: ......
Page 14: ...Notes 12 ...
Page 19: ...Memoranda 17 ...
Page 20: ...Engine views 18 Engine views 3 4 2 1 7 6 5 8 11 10 9 ...
Page 68: ...Memoranda 66 ...
Page 133: ...131 Service Data ...
Page 157: ...155 Special tools ...
Page 158: ...Special tools 156 2 3 4 5 6 7 8 1 6 1 6 2 6 3 9 1 9 2 9 3 9 ...
Page 162: ...Special tools 160 21 22 25 25 2 24 25 1 26 27 1 27 2 27 20 1 19 2 19 1 20 2 19 20 23 28 ...
Page 164: ...Special tools 162 30 31 32 1 32 32 2 ...
Page 167: ...Special tools 165 Pressing mandel for cap dia Ø 62 1 mm Pressing mandel for cap dia Ø 50 1 mm ...
Page 170: ...Notes 168 ...
Page 173: ......
Page 174: ......