Do not clean or wipe piston valve (6) threads. Clean- ing the piston valve threads could destroy the special sealing patch and cause the piston valve to come loose during operation.

6.(Fig. 6) Unscrew piston valve (6) from piston rod (5). Clean and inspect parts. The piston has a special thread locking/sealing patch. Do not remove the patch. The patch allows for disassembly/assembly procedures before it is necessary to apply Loctite® to the threads.

6

5

ti8850a

FIG. 6

Repair

7.(Fig. 7) Remove packing and glands from piston rod. Note orientation for installation.

11

6

5

13

12

10

9

8ti8851a

FIG. 7

8.(Fig. 8) Remove throat packings and glands from cylinder. Discard throat packings and glands.

23

22

21

ti8853a

FIG. 8

311845C

5

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Hitachi 288466 important safety instructions Ti8850a