Mercedes-Benz 602, Service Manual

Page: 277 / 324

Note
Clamp cylinder head in the clamp fixture for
dismantling and machining. Machine valve seats
with valve seat turning equipment, with valve
seat grinder or valve seat miller. The location of
the hydraulic valve clearance compensating
elements must be checked after machining the
valve seat Inserts and, if required corrected
(05211).
Machining valve seats
1
Machine valve seat (45”) (see tool
manufacturer’s operating Instructions).
Caution!
Only loosen pilot (5) when eccentricity of the
valve seat has been checked.
6 Clamping fixture
8 Forward feed operation
2 Check eccentricity of valve seat
(max.
0.03
mm).
Slide fitting sleeve 19) and dial gauge holder
(20) and dial gauge (18) onto the (5).
3
Measure valve seat width (b) and, if required
make a 15” adjustment at the top and 65”
adjustment at the bottom (y).
Valve seat (b)
Intake: 1.2 1.7 mm
Exhaust: 1.5 2.0 mm.
05 3