Parker POWERGRIP PG Series Installation and operating manual

POWERGRIP
Instruction,Service
and Repair Manual
®
PG and PGA Series
HA PGIM/07.22
CONSTRUCTION EQUIPMENT ATTACHMENTS

2
Table of Contents
Introduction
Table of Contents....................................................................................................................................................... 2
Product Overview ...................................................................................................................................................... 3
Operation Technology................................................................................................................................................ 4
General Safety Guidelines......................................................................................................................................... 5
Product Identication ................................................................................................................................................. 6
Installation and Maintenance
Installation and Mounting........................................................................................................................................... 7
Hydraulic Requirements and Plumbing ..................................................................................................................... 8
Installing and Removing Hydraulic Lines................................................................................................................... 9
Maintenance............................................................................................................................................................ 11
Troubleshooting Guide ........................................................................................................................................... 12
Tools
Tools Required ........................................................................................................................................................ 13
Drawings
Assembly Drawings................................................................................................................................................. 14
Exploded View - Bucket andActuator ..................................................................................................................... 15
Exploded View - Valve Manifold ............................................................................................................................. 16
Parts List.................................................................................................................................................................. 17
Disassembly
Product Inspection................................................................................................................................................... 20
Before Disassembly................................................................................................................................................. 21
Disassembly ........................................................................................................................................................... 22
Parts Inspection ...................................................................................................................................................... 25
Assembly
Seal and Bearing Installation .................................................................................................................................. 26
Assembly ................................................................................................................................................................ 28
Post Assembly
Testing ..................................................................................................................................................................... 30
O󰀨er of Sale ............................................................................................................................................................ 32
Service O󰀨ering ...................................................................................................................................................... 33
About Parker............................................................................................................................................................ 34
INTRODUCTION

3
Product Overview
INTRODUCTION
Product Introduction
Helac PowerGrip®, a multi-purpose bucket from
Parker Hannin, is a versatile, durable tool used
as a trenching, grading or clamshell bucket and
for gripping and loading. PowerGrip increases the
tasks a single machine can perform, reducing the
number of dedicated-task machines needed on
a job site. PowerGrip also performs as a general
purpose excavating bucket for everyday tasks.
Ideal for a broad range of applications, PowerGrip
can be used during every step of the construction
process. Since 2001, contractors have come to rely
on PowerGrip for demolition, land clearing, tree/
brush/stump removal, underground utilities, material
handling and nish grading.
Each PowerGrip is built with the quality and
durability Helac is known for – so we o󰀨er a one
year warranty to ensure your complete satisfaction.
When used in combination with Helac PowerTilt®,
a swing attachment, you can achieve unmatched,
hand-like manipulation and dexterity, dramatically
maximizing productivity.

4
Operation Technology
PowerGrip uses Parker Hannin’s innovative,
sliding-spline operating technology to convert
linear piston motion into powerful shaft rotation.
Each actuator is composed of a housing and two
moving parts — the central shaft and piston.
Helical spline teeth on the shaft engage matching
teeth on the piston’s inside diameter. A second set
of splines on the piston’s outside diameter mesh
with the gear in the housing.
Starting position
The piston is completely bottomed out.
Bars indicate starting positions of piston
and shaft. Arrows indicate directions they
will rotate. The housing with integral ring
gear remains stationary.
Ending position
When hydraulic pressure is applied to the
piston, it moves axially, while the helical
gearing causes the piston and shaft to rotate
simultaneously. Applying pressure to the
opposite port will return the piston and shaft
to their original starting positions.
INTRODUCTION

5
General Safety Guidelines
Cautionary Notices
Before beginning installation of the PowerGrip®,
there are several cautionary notices that should
be considered. If you are not comfortable with
installation or maintenance of this product, contact
your local dealer or Parker Hannin’s Customer
Service Department for assistance.
Other Safety Guidelines
and Precautions
1. PowerGrip should only be used to perform
tasks for which it was designed. Abusing the
product and/or using it for purposes for which
it was not intended can expose the operator
and others to hazards as well as result in
damage to the PowerGrip, carrier and/or other
attachments.
2. The operation of the PowerGrip Bucket is
similar to the operation of OEM buckets in
trenching and material handling applications.
However, the PowerGrip Bucket has the
added ability to grip, hold and lift materials in
a pick and place capability. This attachment
is not designed for long term holding of
materials.
Refer to the carrier manufacturer’s instructions
regarding safe material handling practices.
The bucket jaw should only be opened when
needed for specic tasks. Failure to close the
jaw can result in damage to the dipper arm.
3. Modication to the PowerGrip is done at the
owner’s risk and may void the Parker Hannin
O󰀨er of Sale.
4. It is the owner’s responsibility to be sure all
safety equipment is in place and operating
properly at all times. If safety decals fade,
are damaged or become unreadable from
a distance of 10 feet, they should be
replaced immediately.
Be sure to post the warning decal provided
by Parker Hannin to the cab of the
carrier machine.
5. PowerGrip should be used in conjuction with
attachments that do not adversely a󰀨ect the
stability of the machine.
INTRODUCTION

6
General Safety Guidelines
Product Identication
Important Notice
Parker Hannin 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.
A unique serial number is located on each
PowerGrip. This serial number is stamped on
one end of the actuator and is also located on
an Identication (ID) Tag. It may be necessary to
remove paint to expose the serial number.
INTRODUCTION

7
Installation and Mounting
Installing the PowerGrip Bucket
onto the Carrier Removing the PowerGrip Bucket
from the Carrier
PowerGrip Removal
PowerGrip Installation
1. Position the PowerGrip close to the carrier
boom to ensure easy use of the lifting reach
and range of the carrier boom.
2. Lower the dipper to approximately 2-3 inches
(50-75 mm) above the PowerGrip. Roll out the
bucket cylinder to lower the link bars to the
PowerGrip.
3. Align the PowerGrip and link bar holes and
install the link pin.
4. Slowly lift the PowerGrip to a safe height with
the bucket and boom cylinders.
5. Curl the bucket cylinder until the PowerGrip
and dipper holes align and install the bucket
pivot pin. Rotate the pins as necessary and
install the required retainers.
Each PowerGrip is engineered for a specic
backhoe or excavator and is designed to be pin
mounted directly to the machine. When using
All PowerGrip models should be mounted to the
carrier according to the instructions outlined below. To remove the PowerGrip bucket follow the
instructions outlined below.
1. Position the bucket so it is lightly supported by
the ground and in a position so it will not move
or fall when a pin is removed.
2. Remove the bucket pivot and link pins.
6. Safety check. Check that the Helac
Attachment is tting correctly by maneuvering
it with the machine and at the same time
watching for any interference or resistance to
movement that may exist. If there is any sign
of problems with the smooth functioning of
the PowerGrip, DO NOT attempt to carry out
any modications to it, or the host machine.
Contact Helac's Customer Service Department
instead, and they will advise as necessary.
Universal or Hydraulic Quick Couplers, contact the
respective coupler manufacturer for instructions and
maintenance requirements.
INSTALLATION AND MOUNTING

8
Tool Circuit Requirements
Model Sizes PG06 PG07 PG08
Displacement in3
(cm3)84.8 (1,390) 118.5 (1,942) 211 (3,458)
Required Oil Flow gpm
(liters/minute) 2-7 (8-28) 3-10 (12-39) 5-18 (21-70)
Port Connections* SAE 6 6 8
Hydraulic Circuit
Min. Hose Tube Size
Whip Hose Size
in
(mm)
in
(mm)
1/2
(12)
3/8
(10)
5/8
(16)
3/8
(10)
5/8
(16)
3/8
(10)
Hydraulic Pressures
Cross Port Relief Valve Pressure (opening)
Cross Port Relief Valve Pressure (closing)
Circuit Pressure
Maximum Circuit Back Pressure
1,000-1,500 psi
3,200-3,300 psi
3,650-3,750 psi
580 psi
(70-103 bar)
(220-230 bar)
(250-260 bar)
(40 bar)
* 3-10 second open/close time
Hydraulic Requirements and Plumbing
Hydraulic Requirements
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 ow
requirements must be observed or damage to the
actuator can occur.
The installer of the PowerGrip is responsible
for selecting control circuits that are compatible
with the excavator and meet the tool circuit
requirements. Helac can be contacted for
additional control circuits and methods for
controlling the PowerGrip.
NOTICE
PowerGrips are equipped with
a standard pressure control/
load lock manifold welded to the
bucket shell.
Refer to the Suggested Hose Routings Diagram
on Page 11 for the recommended routings.
Typical PowerGrip Circuit
INSTALLATION AND MOUNTING

9
Hydraulic Requirements and Plumbing
NOTICE
When installing a new tool
circuit or hydraulic lines, ush
all the tool circuit lines with
hydraulic oil prior to connecting
the PowerGrip. This will help
remove any contaminants from
the circuit components which
may have accumulated during
manufacturing and/or installation.
Plumbing
Hose and tube size recommendations can be
found in the Tool Circuit Requirements Chart
shown on Page 4.
The position of the hoses is important for reliable
operation. Refer to the Suggested Hose Routings
Chart on Page 10 for suggested hose routings.
Connect hydraulic hoses to the appropriate ports.
Be sure the hoses do not cross, foul, crush or
chafe when operating the PowerGrip or machine.
Verify proper hose routing for all possible positions
of the PowerGrip and all attachments, which are to
be used with the PowerGrip. Repair any oil leaks
immediately.
Installing and Removing
Hyrdualic LInes
The manifold incorporates two ports for hydraulic
hose connections, Port V1 and Port V2. When
pressure is applied to Port V1 the jaw opens;
when pressure is applied to Port V2 the
jaw closes.
After installing the PowerGrip onto the equipment
and attaching the hydraulic lines, it is important
that all safety devices are properly reattached.
Port V2 Port V1
Port P2
▲
Port P1
▲
Port A1
▲
Port A2
▲
INSTALLATION AND MOUNTING

10
Hydraulic Requirements and Plumbing
Suggested Hose Routings
INSTALLATION AND MOUNTING

11
Maintenance
Daily
1. Grease the PowerGrip at the two grease
ttings with a high quality Lithium-based
grease. Apply grease until clean grease ows
from the grease reliefs. Severe operating
conditions such as abrasive dust or prolonged
submersion in water may require more
frequent grease applications.
2. Make sure the grease reliefs are functioning
properly. Open or replace non-functioning
grease reliefs immediately.
NOTICE
Never replace the grease relief
valves with grease ttings or
plugs.
NOTICE
Do not operate the PowerGrip
if the grease reliefs are not
functioning.
3. Inspect the PowerGrip for loose, worn or
damaged components and replace or repair
immediately.
4. Mounting pins should be greased upon
installation and thereafter according to the
equipment manufacturer's instructions.
INSTALLATION AND MOUNTING

12
Troubleshooting Guide
Problem Possible Cause Solution
PowerGrip jaw does not hold position Excessive force being applied to jaw is
causing relief valve to open.
A bi-directional hydraulic motor control
valve is being used without the bucket
load control valve.
Load control valve is leaking.
Seals are leaking oil.
This is normal. The relief valve limits
the force applied to the bucket jaw to
prevent damage to the unit.
Install bucket load control valve.
Test, repair or replace as needed.
Test and replace seals as necessary.
Jaw moves only in one direction Single directional control valve is being
used.
Load control valve manifold is
obstructed.
Hydraulic hose is internally damaged.
Replace with bi-directional
control valve.
Clean manifold passageways(s).
Test and replace damaged hose.
PowerGrip Bucket has spongy feel Air in PowerGrip actuator or hydraulic
circuit. Bleed air from circuit and check
for cause.
Side to side (axial play) movement of
jaw Worn or missing thrust washers. Replace or install thrust washers.
PowerGrip will not accept grease
at grease ttings. Grease relief valve is not functioning, or it has been replaced with a grease tting
or plug.
Clean or replace grease relief valves.
INSTALLATION AND MOUNTING

13
Several basic tools are required for the disassembly
and reassembly of the PowerGrip. The suggested
tools are outlined below:
1. Flashlight
2. Seal tool
3. Pin spanner wrench
4. Two metal dowels
5. Felt or paint marker
6. Pick
7. 1/8 T-handle allen wrench
8. Strap wrench
9. Plastic or rubber mallet
10. Utility knife
11. Two pry bars
12. Metal punch
13. Plastic drift
14. Tape measure
15. One #8-32 x 1.00 or longer machine screw
Tools Required
Making a Seal Tool
The seal tool is merely a customized standard
at head screwdriver.
1. Heat the at end with a torch until it glows.
2. Secure the heated end of the screwdriver
in a vise and bend the heated end to a
slight radius.
3. Round o󰀨 all sharp edges of the heated
tip to a polished nish. The tool may be
modied slightly to your own personal
preference.
5.5. 12.12.
10.10.
4.4.
15.15.
2.2.
TOOLS
1.1.
14.14.
7.7.
3.3.
6.6.
8.8.
9.9.
13.13. 11.11.

14
Assembly Drawing
DRAWINGS

15
Exploded View — Bucket and Actuator
DRAWINGS

16
Exploded View — Valve Manifold Assembly
DRAWINGS

17
Parts List - PG-06
Part
Number Item # Description Qty
68140-24PS 01 Housing - 24" (Includes item #15
housing collars) 1
68140-30PS 01 Housing - 30" (Includes item #15
housing collars) 1
68140-36PS 01 Housing - 36" (Includes item #15
housing collars) 1
68140-42PS 01 Housing - 42" (Includes item #15
housing collars) 1
68140-48PS 01 Housing - 48" (Includes item #15
housing collars) 1
65743-24 02 Shaft 24" 1
65743-30 02 Shaft 30" 1
65743-36 02 Shaft 36" 1
65743-42 02 Shaft 42" 1
65743-48 02 Shaft 48" 1
68139 03 Piston Sleeve 1
65805 04 Drive Hub 2
65806 05 Lock Nut
(diameter is approx. 4.00") 2
65045 06 Spine Adapter 2
65792 10 Cover Plate 2
65039 15 Housing Collar 2
Not Available
From Parker 16 Bucket 1
Not Available
From Parker 17 Bucket Jaw 1
Not Available
From Parker 18 Bucket Tooth Assembly Vari- able
65807
Hardware Kit: SAE Port Plugs
(includes item 105, 106, 106.1,
109, 111, 112)
101 Port plug, Socket Hex Head
(SAE-2) 10
**105 Pull-out dowel pin .25" x 1.0" long 4
**107 Grease relief valve cover 2
122 Grease Fitting (Balcrank, 5000
Lincoln, 1/8-27 NPT) 2
**123 Grease Relief Valve (50500, 1/8-27
NPT, Alemite 400-650 PSI) 2
128 Port Plug, Socket Hex Head
(SAE-6) 2
Part
Number Item # Description Qty
65350 Relief Valve Assembly (includes
items 414, 415, 416, 420, 421)
949046 414 Low pressure cartridge
(includes seals 417) 1
949047 415 High pressure cartridge
(includes seals 418) 1
949048 416 Load holding cartridge
(includes seals 419) 1
N/A 420 Plug 1
N/A 421
Relief Manifold - Block only
(not available as spare part, buy
assembly)
1
Parts
**Items included in seal kit
Part
Number Item # Description Qty
S68152
Seal Kit - Standard
(Includes items below)
207 Collar O-ring
(2-162, 90 Durometer) 2
230 O-ring 2
231 Back-up ring 2
232 O-Ring
233 Back-up Ring
234 T-Seal 1
235 T-Seal 1
236 Cup Seal 2
237 O-Ring 2
238 Cup Seal 2
105 Pull-out dowel pin .25" x 1.0" long 4
107 Grease relief valve cover 2
123 Grease Relief Valve (50500, 1/8-27
NPT, Alemite 400-650 PSI) 2
417, 418
419 Helac Relief valve seal kit 1
Seal Kits
The cartridges listed are available to order individually.
Note that some attachment manufacturers supply their own relief valves.
Part
Number Item # Description Qty
65064
Bearing Kit 180°
(Includes item below)
341 Drive Hub Wear guide 2
342 Piston ID Wear guide 1
343 Piston OD and Drive Hub Wear
guide 3
344 Thrust washer 2
Bearing Kits
Parts in kits not sold individually except as noted

18
Parts List - PG-07
Part
Number Item # Description Qty
66699-24PS Housing - 24" (Includes item #15
housing collars)
66699-30PS 01 Housing - 30" (Includes item #15
housing collars) 1
66699-36PS 01 Housing - 36" (Includes item #15
housing collars) 1
66699-42PS 01 Housing - 42" (Includes item #15
housing collars) 1
66699-48PS 01 Housing - 48" (Includes item #15
housing collars) 1
66699-60PS 01 Housing - 60" (Includes item #15
housing collars)
66704-24 02 Shaft 24"
66704-30 02 Shaft 30" 1
66704-36 02 Shaft 36" 1
66704-42 02 Shaft 42" 1
66704-48 02 Shaft 48" 1
66704-60 02 Shaft 60"
66703 03 Piston Sleeve 1
65811 04 Drive Hub 2
65812 05 Lock Nut
(diameter is approx. 4.625") 2
65057 06 Spine Adapter 2
65817 10 Cover Plate 2
65050 15 Housing Collar 2
Not Available
From Parker 16 Bucket 1
Not Available
From Parker 17 Bucket Jaw 1
Not Available
From Parker 18 Bucket Tooth Assembly Vari- able
65233
Hardware Kit: SAE Port Plugs
(includes item 105, 106, 106.1,
109, 111, 112)
101 Port plug, Socket Hex Head
(SAE-2) 10
**105 Pull-out dowel pin .25" x 1.0" long 4
**107 Grease relief valve cover 2
122 Grease Fitting (Balcrank, 5000
Lincoln, 1/8-27 NPT) 2
**123 Grease Relief Valve (50500, 1/8-27
NPT, Alemite 400-650 PSI) 2
128 Port Plug, Socket Hex Head
(SAE-6) 2
Part
Number Item # Description Qty
65350 Relief Valve Assembly (includes
items 414, 415, 416, 420, 421)
949046 414 Low pressure cartridge
(includes seals 417) 1
949047 415 High pressure cartridge
(includes seals 418) 1
949048 416 Load holding cartridge
(includes seals 419) 1
N/A 420 Plug 1
N/A 421
Relief Manifold - Block only
(not available as spare part, buy
assembly)
1
Parts
**Items included in seal kit
Part
Number Item # Description Qty
S68513
Seal Kit - Standard
(Includes items below)
207 Collar O-ring
(2-166, 70 Durometer) 2
230 O-ring 2
231 Back-up ring 2
232 O-Ring 2
233 Back-up Ring 2
234 T-Seal 1
235 T-Seal 1
236 Cup Seal 2
237 O-Ring 2
238 Cup Seal 2
105 Pull-out dowel pin .25" x 1.0" long 4
107 Grease relief valve cover 2
123 Grease Relief Valve (50500, 1/8-27
NPT, Alemite 400-650 PSI) 2
417, 418
419 Helac Relief valve seal kit 1
Seal Kits
The cartridges listed are available to order individually.
Note that some attachment manufacturers supply their own relief valves.
Part
Number Item # Description Qty
65084
Bearing Kit 180°
(Includes item below)
341 Drive Hub Wear guide 2
342 Piston ID Wear guide 1
343 Piston OD and Drive Hub Wear
guide 3
344 Thrust washer 2
Bearing Kits
Parts in kits not sold individually except as noted

19
Parts List - PG-08
Part
Number Item # Description Qty
69226-30PS 01 Housing - 30" (Includes item #15
housing collars) 1
69226-36PS 01 Housing - 36" (Includes item #15
housing collars) 1
69226-42PS 01 Housing - 42" (Includes item #15
housing collars) 1
69226-48PS 01 Housing - 48" (Includes item #15
housing collars) 1
66836-30 02 Shaft 30" 1
66836-36 02 Shaft 36" 1
66836-42 02 Shaft 42" 1
66836-48 02 Shaft 48" 1
66837 03 Piston Sleeve 1
66838 04 Drive Hub 2
66839 05 Lock Nut
(diameter is approx. 5.750") 2
66840 06 Spine Adapter 2
66841 10 Cover Plate 2
66834 15 Housing Collar 2
Not Available
From Parker 16 Bucket 1
Not Available
From Parker 17 Bucket Jaw 1
Not Available
From Parker 18 Bucket Tooth Assembly Vari- able
69227
Hardware Kit: SAE Port Plugs
(includes item 105, 106, 106.1,
109, 111, 112)
101 Port plug, Socket Hex Head
(SAE-2) 10
**105 Pull-out dowel pin .25" x 1.0" long 4
**107 Grease relief valve cover 2
122 Grease Fitting (Balcrank, 5000
Lincoln, 1/8-27 NPT) 2
**123 Grease Relief Valve (50500, 1/8-27
NPT, Alemite 400-650 PSI) 2
128 Port Plug, Socket Hex Head
(SAE-6) 2
Part
Number Item # Description Qty
69198-01 Relief Valve Assembly (includes
items 414, 415, 416, 420, 421)
949063 414 Low pressure cartridge
(includes seals 417) 1
949064 415 High pressure cartridge
(includes seals 418) 1
949065 416 Load holding cartridge
(includes seals 419) 1
N/A 420 Plug 1
N/A 421
Relief Manifold - Block only
(not available as spare part, buy
assembly)
1
Parts
**Items included in seal kit
Part
Number Item # Description Qty
S66843
Seal Kit - Standard
(Includes items below)
207 Collar O-ring
(2-170, 70 Durometer) 2
230 O-ring 2
231 Back-up ring 2
232 O-Ring 2
233 Back-up Ring 2
234 T-Seal 1
235 T-Seal 1
236 Cup Seal 2
237 O-Ring 2
238 Cup Seal 2
105 Pull-out dowel pin .25" x 1.0" long 4
107 Grease relief valve cover 2
123 Grease Relief Valve (50500, 1/8-27
NPT, Alemite 400-650 PSI) 2
417, 418
419 Helac Relief valve seal kit 1
Seal Kits
The cartridges listed are available to order individually.
Note that some attachment manufacturers supply their own relief valves.
Part
Number Item # Description Qty
66844
Bearing Kit 180°
(Includes item below)
341 Drive Hub Wear guide 2
342 Piston ID Wear guide 1
343 Piston OD and Drive Hub Wear
guide 3
344 Thrust washer 2
Bearing Kits
Parts in kits not sold individually except as noted

20
Product Inspection
Spraying uids:
Contents under pressure.
Wear approved eye protection.
Use caution when removing
port plugs and ttings.
CAUTION Make sure the PowerGrip is thoroughly cleaned
prior to disassembly. Inspect the PowerGrip for
corrosion prior to disassembly.
Severe corrosion can make it di󰀩cult to remove
the tting plugs (101) and lock nuts. If corrosion is
evident, soak with penetrating oil for several hours
before disassembly.
NOTICE
All numbers that appear in
parenthesis () in the following
sections are referring to items on
page 17.
DISASSEMBLY