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KEYED SHAFT
SPLINED SHAFT
OIL STOP HEADS
- Oil stop head seals keep
crankcase oil within frame and also help keep rod
wash fluid and foreign material from entering the
crankcase.
Each oil stop head has two (2) lip ring seals. The
seal lips should face the crankshaft. When
assembling seals, care must be taken not to
damage the sealing lip. Crosshead extension and
seal rings should be coated with oil before seal
assembly. The oil stop head must be assembled to
the frame, then one(1) seal at a time is installed
over the crosshead extension rod into the oil stop
head bore.
Tighten oil stop head gland to prevent seal
movement while pump is in operation. These oil
stop head seals are nonadjustable. When
crankcase oil leakage occurs past seals, the seals
should be replaced as additional tightening of the
gland will not prevent leakage.
It is essential that oil stop head seals be replaced at
the first indication of leakage. Check for oil
collecting below stop heads in cradle area.
If oil leakage is serious, it will appear in a lower oil
level in the crankcase. In this case oil must be
added to the crankcase as required until new oil
stop seals can be installed.
WARNING
When installing oil stop head seal rings,
care must be taken not to damage sealing
lips. Damaged lips could lead to excessive
oil leakage and/or crankcase contamination
and damage.