195 of 222 pages
Operating and service manual
Replacement of compressor valve plate / cylinder
head gasket
1. Depressurize the compressor.
2. Dismount cylinder head and valve plate (using a rubber mallet, if necessary). Carefully clean all
sealing surfaces.
3. Check valve plate; Exchange entire valve plate if damaged. Determine the cause and eliminate it.
4. Mount the cylinder head, valve plate and new gaskets correctly. If located in an inconvenient
mounting position, use mounting pins.
5. Tighten the bolts in the illustrated sequence in two steps. Starting with bolt no. 1 and no. 2
tightened firmly by hand, and then in sequence no. 3 to no. 10 by tightning torque: 70Nm (see
bolt numbers on fig. below).