PGP/PGM 300 Series
Service Manual HY09-SM300/US
3
Parker Hannifin Corporation
Gear Pump Division
Youngstown, OH
315/330/350/365
Service Manual
General Instructions
These service instructions will familiarize you with
Parker's single and multiple pumps
•
their component parts
•
the relative position of each part
•
proper methods for assembly or disassembly of
the units
To facilitate the repair of these units and before any
work is done, we suggest that you first read all of the
steps used in disassembly and assembly.
Dirt is the enemy of any hydraulic system. The first
requirement for good maintenance of hydraulic
equipment is cleanliness. MAKE SURE YOU
DISASSEMBLE AND ASSEMBLE YOUR
HYDRAULIC EQUIPMENT IN A CLEAN AREA.
The pictures show Model PGP365. Notes in the
text cover variations between this unit and the
other models.
It is important to airblast all parts and wipe them with
a clean, lintless cloth before assembly.
USE CAUTION IN GRIPPING ALL PARTS
IN THE VISE TO AVOID DAMAGING
MACHINED SURFACES.
A pump must be driven in the direction of rotation for
which it was built; otherwise, pressure will blow the
shaft seal. Check the exploded view and notes at right
for proper direction of rotation.
Parker's
Replacement Parts
Parker's replacement parts are of original equipment
standards. For assured quality of material and work-
manship, and for compatibility in assembly, USE
ONLY GENUINE PARTS.
Check all replacement parts before installing them to
be certain that they were not damaged in shipment.
NOTE:
For PGP315 and PGP330 ONLY - Plug 5
required in position A and position B.
For PGP350 and PGP365 ONLY - Plug 5 in
position B gives clockwise rotation. Plug 5 in
position A gives counterclockwise rotation.
11. Dowel Pins (Solid for
PGP/PGM 315, 330 and
350. Hollow for PGP/PGM
365 ONLY.)
12. Gear Housing
13. Bearing Carrier
14. Connecting Shaft
15. Matched Gear Set
16. Gear Housing
17. Port End Cover
18. Studs or Cap Screws
19. Washers
20. Nuts
Items shaded apply to
multiple assemblies only.
PARTS LIST
1. Snap Ring
2. Outboard Bearing
3. Seal
4. Shaft End Cover
5. Plug
6. Bushings
7. Channel Seal
8. Thrust Plates
9. Integral Drive Shaft
and Gear Set
10. Gasket Seal
