5
Parker Hannifin Corporation
Gear Pump Division
Youngstown, OH
7) Remove the drive gear
connecting shaft.
For multiple assemblies only.
8) Lift or pry off the first
section gear housing. Be
careful not to damage
machined surfaces. If the
thrust plate remains in the
gear housing, remove as
described in Step 3.
9) Remove the driven gear
and the integral gear and
drive shaft. Keep these
together as they are a
matched set. Examine
and replace if necessary.
Be careful not to damage
the machined surfaces of
the gears.
10) Pry the thrust plates
from the shaft end cover,
port end cover, or bearing
carrier with a screwdriver
or similar tool. Avoid
distorting the thrust plates.
Visually inspect thrust
plates for wear or damage.
Replace if necessary.
(See page 9.) Remove and
discard all rubber pocket
seals and gasket seals.
11) Examine all roller
bearings for scoring,
spalling, or pitting. If
replacement is necessary,
remove the bearings with
a bearing puller.
12) It is generally
advisable to replace ring
seals when rebuilding the
unit. To replace, remove
the drive gear bearing
with a bearing puller,
and remove the ring seal
from the bottom of the
bearing bore.
13) If the pump is
equipped with an out-
board bearing, place the
shaft end cover in a vise
with the mounting face up.
Remove the bearing snap
ring with a small
screwdriver or awl.
14) Use a bearing puller
to remove the outboard
bearing.
Service Manual HY09-SM030/031/050/051/US
Disassembly Instructions
Series PGP 030/031 Series PGP 050/051
