Doc No: OMM50001243
Rev: C Page 46 of 68
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6. Install new seals (20) in the seal housing (19) in the same orientation that they
were originally. The seal lips face toward the power frame.
7. Apply a light coat of Permatex® #2 (non-hardening) or equivalent to the outer
edges and face of seal holder which contacts the power frame. Apply a few
drops of motor oil on the plunger rod to aid in installing the seals and to provide
lubrication during start-up. Take care to avoid folding the lips back when they are
pushed over the plunger rod. Press the seal holder into the power frame.
10.4.2
Servicing the Connecting Rod Bearings
NOTE
Ensure that all pressure inside the pump fluid cylinder has been bled off
before starting any service work. CAUTION: CHECK TO ENSURE THAT
THE POWER IS LOCKED OUT AND TAGGED OUT
Refer to Figure 16 and Figure 17 with the following instructions.
1. The cradle cover (28) should be removed and the plungers (43) disconnected
from the plunger rods (7) to perform the steps in this section.
2. Remove drain plug (22) to allow all oil to drain from power frame into a container
for proper disposal. Use proper precautions if power frame is hot (above 130° F,
54° C) to avoid burns from hot oil or hot surfaces.
3. Remove all rear cover cap screws (17). Remove the back cover (14) and back
cover gasket (15) from the power frame.
4. Rotate the crankshaft (2) to position the connecting rod end cap (3) nearest the
opening and remove the end cap of the connecting rod by unscrewing the hex
nuts that hold each cap to the connecting rod body. Rotate the crankshaft to
reposition the remaining end caps and repeat the end cap removal. The cap can
be removed from the body by tapping with a rubber mallet on the heads of the cap
screws when they are partially removed. It may also be required to tap on the
head of the connecting rod to loosen it. Take care to not damage the threads on
the cap screws.
5. Slide the two shell bearing halves (4) from each connecting rod (3). Note that
these bearing halves sometimes adhere to the pins (journals) on the crankshaft.