Doc No: OMM50001243
Rev: C Page 27 of 68
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2. Refer to Figure 2,
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,
and Figure 4 for location of components. Remove the six
hex nuts (50) on the front cylinder cover clamp bars.
CAUTION: There are compressed springs beneath the
clamp bars (59) and cylinder covers (60). These covers
may move suddenly back due to the spring force. Slide the
three clamp bars off of the studs (53).
3. Remove the three cylinder covers (60). If the covers are
still seated against the fluid cylinder take care during
removal (see note above). Removal Tip: It may be
necessary to tap on the sides of the covers to free them
from the fluid cylinder.
4. Remove the three springs (41) from the fluid cylinder. If a
tool is used to hook and remove the spring, take care to
avoid scratching or damaging the plunger (43).
5. Loosen plunger (43) and rotate the crankshaft so that the
loose plunger is at the top end of the stroke (toward front of
fluid cylinder). NOTE: When manually rotating the
crankshaft, take care to avoid scratching or marring the
shaft.
6. Slide the three deflectors (21) back against the oil seal
holders.
7. Slide a soft plastic or metal bar with the appropriate
diameter through the opening in the front of the fluid
cylinder and drive the packing (38) from the stuffing box
toward the power end and oil seal holder.
8. Remove the packing and junk rings. Installation Tip: Notice
the style of the packing and how the packing and
associated junk rings (throat bushing and/or lantern ring)
are arranged. Installation of the new packing and rings will
be in the same arrangement and orientation.
9. Repeat steps 5 through 9 for the other two plungers and
packing.
10. Inspect the throat bushing and lantern ring for wear or
damage and replace if necessary. Visually inspect the
plunger for roughness or scratches and replace if
necessary. (Roughness on the plunger sealing surface can
reduce packing life.) Also inspect the bore of the stuffing
box for wear or roughness.
