76 - 5
Section E
Hydraulics
9803/6400
Section E
76 - 5
Issue 1
Hydraulic Rams
Reconditioning (continued)
Jig Usage
Note: The special jigs are different, according to the cylinder diameter, so choose the appropriate jig from the table. The lower
part of the inner guide jig is very thin, so be careful with handling and storage.
Procedures for inserting, correcting the seal ring.
Stretch the 'O'-ring by hand and fit it into the piston
groove.
Be sure not to twist the 'O'-ring. A twisted 'O'-ring may
cause oil leakage.
Fit the inner guide jig on the upper section of the piston.
Carefully fit the thinner end of the inner-guide jig on the
upper section of the piston.
Apply a thin coat of lubricant to the inner guide jig
periphery and then set the seal ring on the inner guide jig.
Make sure that any foreign matter like dust, chipped metal
and lint do not adhere to the outer surface of the inner
guide jig.
1. O-ring installation
2. Attaching the inner guide jig
3. Seal ring installation
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