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GA
0601.03 en-GB, ID-No.: 901930331, 161-490/A
E.
F.
• Replace the O-ring 602.
• Grease the new O-ring before mounting it.
Fig. 14
G.
H.
Fig. 16
Fig. 15
• Loosen and remove the throttle screw 647
and replace the O-ring 646 if hardened or
damaged. Fit the throttle screw back into
place.
• Grease the new o-ring before mounting it.
• Unscrew the screws 609A and remove the
nut 609.
• Unscrew the set screw 608 and replace the
O-ring 605. Fit the set screw 608 back
into place again.
• Grease the new O-ring before mounting it.
I.
• Reassemble in reversed order. Put the valve back into the system.
• Readjust the pressure and start-up according to the instructions under ”Start-up”.
Fig. 17
602
646
647
609A
609
605
608
• Replace the springs if necessary.
• Check the outer surface on the compensa
-
tor piston 617 and the inner surface on the
compensator sleeve 625. If you find wear or
corrosion, replace these parts.
• Check the poppet 614. Replace it if damaged.
Fig. 13
