Table 3-3. Preventive Maintenance Checks and Services for ROWPU System (Continued)
Q - Quarterly
S - Semiannually
A - Annually
CHECK FOR AND HAVE
IS NOT READY/
REPAIRED OR ADJUSTED
B D A D W M Q S A
a. Check HP pump pedestal bearing oil.
Oil level is low.
Change pedestal bearing oil every 6
months or 4000 hours of operation,
whichever comes first. This interval must
be reduced to 4 months or 2500 hours
for pumping at temperatures above
1) Place container under drain plug to
catch used oil (Figure 3-10).
2) Remove drain plug underneath
pedestal and allow oil to drain.
3) Replace plug.
4) Remove oil breather and add 6 qt of
oil (OE/HDO-MIL-L-2104). Replace oil
5) Clean up any spills.
b. Replace pump mechanical seals if neces-
sary. The mechanical seal in the pump
exceed 1 gal
requires no maintenance or adjustment.
When seal has become worn or dam-
aged and leaks excessively, ft must be
replaced. Maximum allowable leakage
for the mechanical seal is 1 gal per hour.
c. Refer to LO 10-4610-229-12 for
complete lubrication instructions
for 150,000 GPD ROWPU.
3-38 Change 1