10 - 6
Other Measurements (continued)
g Ram Piston Rod Seal Leakage
As described below, check each ram in turn to
determine the amount of leakage via the ram rod seal.
1 Extend the ram fully and wipe the piston rod and
check that there are no scratches.
2 Extend and retract the ram until the rod has moved
a total of 100 metres (see the ram specification in
Technical Data, Section E to determine the number
of ram strokes needed to achieve the required total
ram movement).
3 Measure the width of the oil ring on each ram rod to
see if it is within specifications (see below). Rings B
to G are satisfactory, but ring A indicates that the
rod seal should be renewed.
This completes the measurement procedure for the
Performance Evaluation.
Section 3 Routine Maintenance
9803/6410
Section 3
10 - 6
Issue 1
Performance Evaluation
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