Inlet and Exhaust Valve Cones
Inspection / Disassembly and reassembly
A5.05. 01.07.01.01
7500, 15000
M20
en / 29.05.2000 IB021215 2/2
01
Ĺ
1.5 Remove valve spring compressor (Fig. 1/W1), spring plate (2), internal and external valve
springs (3) as well as valve turning device from the cylinder cover.
1.6 Extract valves from the cylinder head
Note:
Renew any valves which are heavily worn in the clamping area and any clamping cone
halves which have large burrs. Remove projecting burrs before disassembling such valves.
Maintenance of valve cone/valve seat (01.08.01.nn/01.08.02.nn).
2. Reassembly
2.1 Check valve guide clearance, renew the O-ring (01.05.01.nn).
2.2 Lubricate the valve stem well before fitting and fit the valve cone by screwing it in.
2.3 Assembly is carried out in reverse order to removal.
2.4 After inserting the clamping cone halves, slowly expand the valve springs and make sure
that the clamping cone halves are in the correct position.
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