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Important! Check the leakage bores Æ4 of the seal sleeves (36) and seal cases (46) for dirt and clean if necessary.
The elbow screw-in joints (37B) and elbow pipes (37A) must also be checked for dirt and cleaned if necessary.
Important! The Æ4 leakage bore of the middle seal sleeve must be closed by a rubber plug (36A) to ensure water circulation
from seal sleeve 1 to seal sleeve 3.
Fit the drip- return unit (32/33/35,) the high-pressure seal unit (38,39,40,) and tension spring (41) into the seal sleeve.
Then push the assembled seal sleeves (36) carefully onto the plungers and into the drive; thereafter mount elbow pipes (37A)
as per the exploded view and tighten the screw-in joints (37B) carefully.
Check O-rings on the drip-return ring (45) as well as border seal ring (43) and replace where necessary.
Push the valve casing (54) with its seal cases (46) and drip-return rings (44) onto the seal sleeves (36).
Tighten valve casing nuts (59) evenly to 59 ft.-lbs. (80 N-M).
To Dismantle Gear
First, disassemble valve casing and seal sleeves; then screw out oil plug (12) and drain oil.
Thereafter screw off gear cover (4) and bearing cover (14.)