4
Replacing valve seat insert
96
Installing valve seat insert
Fig. 4
Cool new valve seat insert down to approx. -200
°
C
and insert it into the cylinder head (at an ambient
temperature of approx. 20
°
C).
Carry out check by driving it in until the stop is re-
ached using pressing tool.
Install valve guides.
Note:
When the valve seat inserts have been
changed, the valve seats must be re-
worked.
Note:
D
After temperature equalization, machine valve seats
D
After machining, clean cylinder head and check for leaks using leak testing device
D
f the cylinder head is excessively heated (above +200
_
C, +390
_
F) the core hole covers (end
covers) loose their tightness and must be exchanged
D
To do this, clean core holes, blow out channels and press in new core hole covers with
“LOCTITE 648” and pressing mandrel
Summary of Contents for D 2866 LUE 605
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 62 1 mm Pressing mandel for cap dia 50 1 mm...
Page 170: ...Notes 168...
Page 173: ......
Page 174: ......