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"P-1NN" SINGLE PRESSURE COMPENSATOR
FOR PVG-180 PUMP, A2 SERIES CONTROL
Figure 1. Typical Oilgear Type "P-1NN" Single Pressure Compensator
PURPOSE OF INSTRUCTIONS
These instructions will simplify the installation,
operation, troubleshooting and maintenance of
O i l g e a r t y p e " P - 1 N N " S i n g l e P r e s s u r e
Compensator controlled units.
REFERENCE MATERIAL
Fluid Recommendations........................................................................................................................... Bulletin 90000
Contamination Evaluation Guide ............................................................................................................ Bulletin 90004
Filtration Recommendations..................................................................................................................... Bulletin 90007
Piping Information .................................................................................................................................... Bulletin 90011
Installation of Vertically Mounted Axial Piston Units................................................................................. Bulletin 90014
PVG Pump - 180 Service Instructions ................................................................................................... Bulletin 948034
PVG Open Loop Pumps, Sales ............................................................................................................Bulletin 47019-K
PVG 180 PUMP INSTALLATIONS
Single Pressure Compensator "P-1NN," Installation ........................................................................ Data Sheet 48377
Through Shaft Basic Pump, Installation .......................................................................................... Data Sheet 48376
Gear Pump, Installation ..................................................................................................................... Data Sheet 47945
Dual Pump 2-Bolt SAE Adapters, Installation .................................................................................... Data Sheet 48387
Dual Pump 4-Bolt SAE Adapters, Installation .................................................................................... Data Sheet 48388
Issued: May 2019
CONTROL SERVICE MANUAL
SERVICE INSTRUCTIONS FOR
Control for PVG-
THE OILGEAR COMPANY
905 South Downing Street
Fremont, NE 68025 USA
Pumps
This material will inform you about the basic
construction, principle of operation and service
parts listings. Some controls may be modified for
specific applications from those described in this
bulletin and other changes may be made without
notice.
www.oilgear.com
Bulletin 948675A
Bulletin 948675A
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Related Manuals for OilGear A2 Series
Summary of Contents for OilGear A2 Series
- Page 1 CONTROL SERVICE MANUAL Bulletin 948675A SERVICE INSTRUCTIONS FOR “P-1NN” SINGLE PRESSURE COMPENSATOR FOR PVG-180 PUMP, A2 SERIES CONTROL Figure 1. Typical Oilgear Type “P-1NN” Single Pressure Compensator Control for PVG- Pumps PURPOSE OF INSTRUCTIONS This material will inform you about the basic...
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Page 2: Table Of Contents
Screw & Plug Torques Control O-Ring Seals Item Number List ..........13 Parts List..........................14 Control Service Kits ........................ 15 Parts Exploded Views ......................16 - 17 Notes ..........................18 - 19 Spare Parts Availability ......................20 © 2019 THE OILGEAR COMPANY - ALL RIGHTS RESERVED Bulletin 948675A... -
Page 3: Safety First
Please contact us if you have please contact Oilgear prior to servicing. questions regarding information in this instruction bulletin. Bulletin 948675A © 2019 THE OILGEAR COMPANY - ALL RIGHTS RESERVED... - Page 4 If you failure. This can cause serious injury. have any questions concerning relieving Please contact Oilgear for assistance when the hydraulic pressure from the system, required. please contact Oilgear. © 2019 THE OILGEAR COMPANY - ALL RIGHTS RESERVED Bulletin 948675A...
- Page 5 Failure to follow this procedure with electrical wires, moving parts, or can result in serious injury or death. hydraulic equipment. Bulletin 948675A © 2019 THE OILGEAR COMPANY - ALL RIGHTS RESERVED...
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Page 6: Circuit Diagram / Control Behavior Curve For ""P-1Nn" Control
OP 6 OILG0331 Figure 2. ASA Diagram for “P-1NN” Control Shown with Typical Pump Related Pump PRESSURE Pressure OILG0380 Figure 3. Curve Indicating Flow Versus Pressure for “P-1NN” Type Control © 2019 THE OILGEAR COMPANY - ALL RIGHTS RESERVED Bulletin 948675A... -
Page 7: Troubleshooting
Inspect and clean if necessary. Replace damaged parts. Contamination trapped between control spool and bore not allowing spool to move smoothly Faulty remote function circuit Inspect and replace if necessary. © 2019 THE OILGEAR COMPANY - ALL RIGHTS RESERVED Bulletin 948675A... -
Page 8: Principle Of Operation: Starting / Raising Pressure
, o r i f i c e s, connections and ports. © 2019 THE OILGEAR COMPANY - ALL RIGHTS RESERVED Bulletin 948675A... - Page 9 (305) is held in position only by the spring (328). The outlet pressure through Port “OP 2” is further transmitted through Port “OP 3” and Port “OP 4” to the adjustable pressure compensator relief valve. © 2019 THE OILGEAR COMPANY - ALL RIGHTS RESERVED Bulletin 948675A...
- Page 10 CONTROL CONTROL PIN OP 6 (328) OP 2 OP 3 OP 4 OP 1 PRESSURE OP 14 COMPENSATOR OPTIONAL RELIEF VALVE (305) OILG0474 Figure 4. Raising Pressure - Loading © 2019 THE OILGEAR COMPANY - ALL RIGHTS RESERVED Bulletin 948675A...
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Page 11: Principle Of Operation: Compensating Pressure (Unloading)
( 3 0 3 ) . P u m p displacement will increase until the relief valve setting is reached again. © 2019 THE OILGEAR COMPANY - ALL RIGHTS RESERVED Bulletin 948675A... - Page 12 CONTROL CONTROL PIN OP 6 OP 2 (328) OP 3 OP 4 (308) OP 1 (307) OP 14 OPTIONAL (327) (305) (310) OILG0475 Figure 5. Compensating Pressure - Unloading © 2019 THE OILGEAR COMPANY - ALL RIGHTS RESERVED Bulletin 948675A...
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Page 13: Screw & Plug Torques Control O-Ring Seals Item Number List
014/Teflon Back Up Ring 904/90 * 904/80 903/90 * 903/80 014/Teflon Back Up Ring 1014 014/90 014/80 1912 912/90 912/80 * Pumps with Buna seals use Viton for all SAE plugs © 2019 THE OILGEAR COMPANY - ALL RIGHTS RESERVED Bulletin 948675A... -
Page 14: Parts List
Spool Plug Poppet Seat Bonnet Adjusting Screw Shim 315A Screw 315B Screw Screw Orifice Plug Plug Plug Plug Orifice Plug Spring Spring Spring Plug, Permanent Plug Adjusting Screw Bonnet © 2019 THE OILGEAR COMPANY - ALL RIGHTS RESERVED Bulletin 948675A... -
Page 15: Control Service Kits
P-1NN Control Service Kits Document Number: 520167- Reference: Ass y Drwg Revision: 0 Sheet 1 of 1 Design Description Kit Number Items Included (quantity is 1 unless noted) Series © 2019 THE OILGEAR COMPANY - ALL RIGHTS RESERVED Bulletin 948675A... -
Page 16: Parts Exploded Views
CONTROL SERVICE MANUAL Bulletin 948675A Figure 6. Exploded Parts Drawing for PVG-180 “P-1NN” Single Pressure Compensator Control (520167-831 sheet 1) © 2019 THE OILGEAR COMPANY - ALL RIGHTS RESERVED Bulletin 948675A... - Page 17 CONTROL SERVICE MANUAL Bulletin 948675A Figure 7. Cross Section Parts Drawing for PVG-180 “P-1NN” Single Pressure Compensator Control (520167-831 sheet 2) © 2019 THE OILGEAR COMPANY - ALL RIGHTS RESERVED Bulletin 948675A...
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Page 18: Notes
CONTROL SERVICE MANUAL Bulletin 948675A NOTES © 2019 THE OILGEAR COMPANY - ALL RIGHTS RESERVED Bulletin 948675A... - Page 19 CONTROL SERVICE MANUAL Bulletin 948675A NOTES © 2019 THE OILGEAR COMPANY - ALL RIGHTS RESERVED Bulletin 948675A...
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Page 20: Spare Parts Availability
CONTROL SERVICE MANUAL Bulletin 948675A SPARE PARTS AVAILABILITY Prepare for your future needs by stocking Oilgear original factory parts. Having the correct parts and necessary skills “in-plant” enables you to minimize “down-time.” Oilgear has developed parts kits to cover likely future needs. Oilgear Field Service...