2. Install new piston rings (L230). Ensure the spherical surface conforms to the shape of the piston. A
radial identification mark appears on the outer side of the piston rings. Do not let the ends of each
piston ring overlap each other.
Spherical piston rings
L230
Radial identification mark located
on this side of piston ring
The spherical surface of the piston ring must
conform to the spherical shape of the piston
Split line
P104 092
Bearing plate, valve segment, and cylinder block
1. Inspect the bronze surface of the bearing plate (C10) for damage and excessive wear. Sealing surface
must be free from scratches and nicks. The locating pin holes must not be worn. Replace if necessary.
Bearing plate
C10
P104 093
Valve segment
B05
P106 350E
2. Inspect the valve segment (B05) for damage or wear on the sealing surfaces.
Repair Instructions
Series 51 and 51-1 Bent Axis Motors Repair Instructions
Inspection
11009449 • Rev BA • December 2014
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