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Summary of Contents for Parker POWERGRIP PG Series
- Page 1 POWERGRIP ® Instruction,Service and Repair Manual PG and PGA Series HA PGIM/07.22...
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Page 2: Table Of Contents
Product Inspection ..............................20 Before Disassembly ..............................21 Disassembly ................................22 Parts Inspection ..............................25 Assembly Seal and Bearing Installation ..........................26 Assembly ................................28 Post Assembly Testing ..................................30 Offer of Sale ................................32 Service Offering ..............................33 About Parker ................................34... -
Page 3: Product Overview
Each PowerGrip is built with the quality and durability Helac is known for – so we offer a one Parker Hannifin, is a versatile, durable tool used year warranty to ensure your complete satisfaction. as a trenching, grading or clamshell bucket and for gripping and loading. -
Page 4: Operation Technology
INTRODUCTION Operation Technology PowerGrip uses Parker Hannifin’s innovative, Helical spline teeth on the shaft engage matching teeth on the piston’s inside diameter. A second set sliding-spline operating technology to convert of splines on the piston’s outside diameter mesh linear piston motion into powerful shaft rotation. -
Page 5: General Safety Guidelines
Failure to close the jaw can result in damage to the dipper arm. 3. Modification to the PowerGrip is done at the owner’s risk and may void the Parker Hannifin Offer of Sale. 4. It is the owner’s responsibility to be sure all safety equipment is in place and operating properly at all times. -
Page 6: Product Identification
INTRODUCTION General Safety Guidelines Important Notice Parker Hannifin does not assume any reponsibility beyond the design and performance of its construction equipment attachment products. The customer is solely responsble for engineering of mating structures, fasteners and other associated components related to the installation of the product and its ultimate application. -
Page 7: Installation And Mounting
INSTALLATION AND MOUNTING Installation and Mounting Each PowerGrip is engineered for a specific Universal or Hydraulic Quick Couplers, contact the respective coupler manufacturer for instructions and backhoe or excavator and is designed to be pin maintenance requirements. mounted directly to the machine. When using Removing the PowerGrip Bucket Installing the PowerGrip Bucket onto the Carrier... -
Page 8: Hydraulic Requirements And Plumbing
INSTALLATION AND MOUNTING Hydraulic Requirements and Plumbing Hydraulic Requirements Typical PowerGrip Circuit The Typical PowerGrip Circuit Chart and the Tool Circuit Requirements Table (shown on this page) illustrate the control circuit requirements for the PowerGrip. The hydraulic pressures and flow requirements must be observed or damage to the actuator can occur. -
Page 9: Installing And Removing Hydraulic Lines
INSTALLATION AND MOUNTING Hydraulic Requirements and Plumbing Installing and Removing Hyrdualic LInes The manifold incorporates two ports for hydraulic After installing the PowerGrip onto the equipment hose connections, Port V1 and Port V2. When and attaching the hydraulic lines, it is important pressure is applied to Port V1 the jaw opens;... - Page 10 INSTALLATION AND MOUNTING Hydraulic Requirements and Plumbing Suggested Hose Routings...
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Page 11: Maintenance
INSTALLATION AND MOUNTING Maintenance Daily 1. Grease the PowerGrip at the two grease fittings with a high quality Lithium-based grease. Apply grease until clean grease flows from the grease reliefs. Severe operating conditions such as abrasive dust or prolonged submersion in water may require more frequent grease applications. -
Page 12: Troubleshooting Guide
INSTALLATION AND MOUNTING Troubleshooting Guide Problem Possible Cause Solution PowerGrip jaw does not hold position Excessive force being applied to jaw is This is normal. The relief valve limits causing relief valve to open. the force applied to the bucket jaw to prevent damage to the unit. -
Page 13: Tools
TOOLS Tools Required 8. 8. 9. 9. 7. 7. 3. 3. 4. 4. 6. 6. 2. 2. Several basic tools are required for the disassembly Making a Seal Tool and reassembly of the PowerGrip. The suggested tools are outlined below: The seal tool is merely a customized standard flat head screwdriver. -
Page 14: Drawings
DRAWINGS Assembly Drawing... -
Page 15: Exploded View - Bucket And Actuator
DRAWINGS Exploded View — Bucket and Actuator... -
Page 16: Exploded View - Valve Manifold
DRAWINGS Exploded View — Valve Manifold Assembly... -
Page 17: Parts List
O-ring 65045 Spine Adapter Back-up ring 65792 Cover Plate O-Ring 65039 Housing Collar Back-up Ring Not Available Bucket From Parker T-Seal S68152 Not Available T-Seal Bucket Jaw From Parker Cup Seal Not Available Vari- Bucket Tooth Assembly From Parker able... - Page 18 65817 Cover Plate T-Seal S68513 65050 Housing Collar T-Seal Cup Seal Not Available Bucket From Parker O-Ring Not Available Bucket Jaw Cup Seal From Parker Not Available Vari- Pull-out dowel pin .25" x 1.0" long Bucket Tooth Assembly From Parker...
- Page 19 Spine Adapter Collar O-ring (2-170, 70 Durometer) 66841 Cover Plate O-ring 66834 Housing Collar Back-up ring Not Available Bucket From Parker O-Ring Not Available Bucket Jaw From Parker Back-up Ring Not Available Vari- Bucket Tooth Assembly From Parker able T-Seal...
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Page 20: Disassembly Product Inspection
DISASSEMBLY Product Inspection Make sure the PowerGrip is thoroughly cleaned CAUTION prior to disassembly. Inspect the PowerGrip for Spraying fluids: corrosion prior to disassembly. Contents under pressure. Wear approved eye protection. Severe corrosion can make it difficult to remove Use caution when removing the fitting plugs (101) and lock nuts. -
Page 21: Before Disassembly
DISASSEMBLY Before Disassembly 1. Close jaw fully and release hydraulic pressure. 2. Mark the port access holes with P1 and P2 Secure jaw to bucket shell by tack welding for future reference during disassembly and tabs at three locations as shown on both sides assembly. -
Page 22: Disassembly
DISASSEMBLY Disassembly 4. Using pry bars, remove P1 drive hub (04) first, Disassembly then P2 drive hub (04). 1. Remove the hydraulic tubes from P1 and P2. Hydraulic oil will discharge NOTICE Using a 1/8 T-handle allen wrench, remove when hub is removed. the 5 SAE #2 fitting plugs (101) from each lock nut (05). - Page 23 DISASSEMBLY Disassembly 6. Using a plastic mallet, drive the shaft (02) toward Be sure the piston sleeve (03) and NOTICE the P1 end until the shaft protrudes far enough housing (01) are not damaged to grasp. Carefully pull the shaft (02) out from during disassembly.
- Page 24 DISASSEMBLY Disassembly 13. Remove the exclusion seal (236) from the drive 10. Remove the drive hub seal (238) from the drive hubs (04) using a seal tool or a utility knife. hubs (04) using a seal tool or a utility knife. 14.
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Page 25: Parts Inspection
DISASSEMBLY Disassembly 16. Remove the piston OD seal (235) from the 18. Remove the piston ID seal (234) from the piston piston sleeve (03) using a seal tool or a utility sleeve (03) using a seal tool. knife. 17. Remove the piston ID bearing (342) from the piston sleeve (03) using a seal tool. -
Page 26: Seal And Bearing Installation
ASSEMBLY Seal and Bearing Assembly 4. Install the bearings (341, 343) onto each drive Lightly oil all seals, seal grooves and NOTICE hub (04). bearings prior to installing. 1. Install the exclusion seal (236) onto each drive hub (04) using a seal tool. 2. - Page 27 ASSEMBLY Seal and Bearing Assembly 9. Install the piston ID seal (234) (with back-up 6. Depending on model, install the exclusion o-ring seal (237) into the ID of the drive hub (04) or the rings if applicable) into the piston sleeve (03). OD of the locknut (05).
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Page 28: Assembly
ASSEMBLY Assembly Lightly oil inside the housing and NOTICE each component as installed. 1. Install the piston sleeve (03) into the housing (1) from the P2 side, engage the teeth and push in until the measured distance from the back of the piston sleeve (03) to outer edge of the housing bore at the P2 side is as recorded during step five of disassembly on page 21. - Page 29 ASSEMBLY Assembly 5. Install P1 and P2 lock nuts (05) onto shaft (02) P1 side and tighten snug. 1/8" hex wrench 8. Using a pin spanner wrench or two metal dowels and a pry bar, tighten the P2 lock nut (5) to 120 ft-lbs (162 Nm).
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Page 30: Post Assembly Testing
POST ASSEMBLY Testing Testing for Internal Leakage 1. Connect a 5,000 psi (350 bar) test gauge into the hydraulic line to Port P2. Pressurize P2 until the jaw closes fully. If the jaw is not completely closed, NOTICE hydraulic fluid will exhaust from Port P1 at a high velocity when Port P1 is uncapped. - Page 31 POST ASSEMBLY Testing Hydraulic Logic of Load Control Manifold This valve has three separate cartridges that work together to provide: 1. Hydraulic oil should require 3,000 psi (206 bar) to flow from port A2 to port V2. 2. Ports A1 and V1 are always common to each other.
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Page 32: Offer Of Sale
Offer of Sale The items described in this document and other documents and descriptions provided by Parker Hannifin Corporation, its subsidiaries and its authorized distributors (“Seller”) are hereby offered for sale at prices to be established by Seller. This offer and its acceptance by any customer (“Buyer”) shall be governed by all of the following Terms and Conditions. Buyer’s order for any item described in its document, when communicated to Seller verbally, or in writing, shall constitute acceptance of this offer. -
Page 33: Service Offering
POST ASSEMBLY Service Offering Parker Hannifin's Service Department can effectively Repair Service tackle your service and repair needs and provide responsive customer support. Our 30 years of Our fully equipped repair department ensures factory extensive rotary actuator expertise coupled with specifications and customer expectations are met an in-depth understanding of our customers’... -
Page 34: About Parker
PowerGrip - U.S. patent #6370801 2022 Parker Hannifin Corporation. All rights reserved. © PARKER HANNIFIN CORPORATION 225 BATTERSBY AVENUE • ENUMCLAW, WA 98022 USA PHONE 360.825.1601 • FAX 360.825.1603 • www.parker.com/helac...
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