Textron Greenlee H4905A Manuale utente
INSTRUCTION MANUAL
H4905A
Hydraulic Sign Post Puller
99936755 REV 3 © 2010 Greenlee Textron Inc. 1/10
Read and understand all of the instructions and
safety information in this manual before operating
or servicing this tool.
Register this product at www.greenlee.com
H4905A Hydraulic Sign Post Puller
Greenlee / A Textron Company 4455 Boeing Dr. • Rockford, IL 61109-2988 USA • 815-397-7070
2
Description
The H4905A is a portable, hydraulically powered device
intended to pull various sizes and shapes of standard
sign posts. Capable of developing 43.6 kN (9800 lb) of
lifting force, the sign post puller uses either serrated
jaws or a chain to grip the post. It features a built-in
control valve.
Safety
Safety is essential in the use and maintenance of
Greenlee Utility tools and equipment. This instruction
manual and any markings on the tool provide informa-
tion for avoiding hazards and unsafe practices related to
the use of this tool. Observe all of the safety information
provided.
Purpose of this Manual
This manual is intended to familiarize personnel with
the safe operation and maintenance procedures for the
following Greenlee Utility tool:
H4905A (42237) Sign Post Puller
Keep this manual available to all personnel.
Replacement manuals are available upon request at no
charge at www.greenlee.com.
Other Publications
Tool Owners/Users
SAE Standard J1273 (Hose and Hose Assemblies):
Publication 99930323
Authorized Greenlee Utility Service Centers
Service Manual: Publication 99916045
All specications are nominal and may change as design
improvements occur. Greenlee Textron Inc. shall not be liable for
damages resulting from misapplication or misuse of its products.
KEEP THIS MANUAL
Table of Contents
Description .................................................................... 2
Safety ............................................................................ 2
Purpose of this Manual ................................................. 2
Other Publications......................................................... 2
Important Safety Information .....................................3–5
Identication.................................................................. 6
Specications................................................................ 7
Hoses and Fittings ........................................................ 8
Hose Connections......................................................... 8
Typical Setup................................................................. 8
Operation..................................................................9–10
Maintenance ............................................................... 10
Troubleshooting........................................................... 11
Illustration and Parts List........................................12–13
H4905A Hydraulic Sign Post Puller
Greenlee / A Textron Company 4455 Boeing Dr. • Rockford, IL 61109-2988 USA • 815-397-7070
3
IMPORTANT SAFETY INFORMATION
SAFETY
ALERT
SYMBOL
This symbol is used to call your attention to hazards
or unsafe practices which could result in an injury or
property damage. The signal word, dened below,
indicates the severity of the hazard. The message
after the signal word provides information for pre-
venting or avoiding the hazard.
Immediate hazards which, if not avoided, WILL result
in severe injury or death.
Hazards which, if not avoided, COULD result in
severe injury or death.
Hazards or unsafe practices which, if not avoided,
MAY result in injury or property damage.
Read and understand all of the
instructions and safety information
in this manual before operating or
servicing this tool.
Failure to observe this warning could
result in severe injury or death.
Electric shock hazard:
This tool is not insulated. Do not use
this tool near energized electrical
lines.
Failure to observe this warning could
result in severe injury or death.
Skin injection hazard:
Do not use hands to check for •
leaks.
Do not hold hose or couplers while •
the hydraulic system is pressurized.
Depressurize the hydraulic system•
before servicing.
Oil under pressure easily punctures
skin, causing serious injury, gangrene,
or death. If you are injured by escap-
ing oil, seek medical attention
immediately.
Wear eye protection when operating
or servicing this tool.
Failure to wear eye protection could
result in serious eye injury from ying
debris or hydraulic oil.
Wear a hard hat when using this tool.
Failure to observe this warning could
result in severe injury or death.
Pinch points:
Keep hands away from moving parts
during operation.
Failure to observe this warning could
result in severe injury or death.
Wear hearing protection when using
this tool.
Long-term exposure to high noise
levels could result in hearing loss.
H4905A Hydraulic Sign Post Puller
Greenlee / A Textron Company 4455 Boeing Dr. • Rockford, IL 61109-2988 USA • 815-397-7070
4
IMPORTANT SAFETY INFORMATION
Wear foot protection when using this
tool.
Failure to observe this warning could
result in serious injury.
Tool and other components may be
hot during and after operation. Allow
to cool before handling, or handle
with heat-resistant gloves.
Failure to observe this warning could
result in severe injury.
Support or secure the post that is being removed.
An unsupported or unsecured post can fall.
Failure to observe this warning could result in severe
injury or death.
Use chains with the following characteristics:
7.1 mm (9/32") link thickness•
Alloy steel material•
64 kN (14,400 lb) minimum breaking strength•
An underrated chain may break during operation.
Failure to observe this warning could result in severe
injury or death.
Do not exceed the following hydraulic power source
maximums:
Hydraulic ow: 22.7 l/min (6 gpm)•
Pressure relief: 138 bar (2000 psi)•
Back pressure: 13.8 bar (200 psi)•
Failure to observe this warning could result in severe
injury or death.
Do not disconnect tool, hoses, or ttings while the
power source is running or if the hydraulic uid is hot.
Hot hydraulic uid could cause serious burns.
Do not reverse hydraulic ow. Operation with hydrau-
lic ow reversed can cause tool malfunction. Connect
the pressure (supply) hose and tank (return) hose to
the proper ports.
Do not change accessories, inspect, adjust, or
clean tool when it is connected to a power source.
Accidental start-up can result in serious injury.
Failure to observe this warning could result in severe
injury or death.
H4905A Hydraulic Sign Post Puller
Greenlee / A Textron Company 4455 Boeing Dr. • Rockford, IL 61109-2988 USA • 815-397-7070
5
IMPORTANT SAFETY INFORMATION
Hydraulic oil can cause skin irritation.
Handle the tool and hoses with care to prevent skin •
contact with hydraulic oil.
In case of accidental skin contact with hydraulic oil, •
wash the affected area immediately to remove the
oil.
Failure to observe these precautions may result in
injury.
Inspect the hydraulic hoses and couplers every•
operating day. Repair or replace if leakage, crack-
ing, wear, or damage is evident. Damaged hoses
or couplers may fail, resulting in injury or property
damage.
Use this tool for manufacturer’s intended purpose •
only. Use other than that which is described in this
manual may result in injury or property damage.
Make sure all bystanders are clear of the work •
area when handling, starting, and operating the
tool. Nearby personnel may be injured by ying or
falling debris or by ying parts in the event of a tool
malfunction.
Emergency stop procedure/power supply failure:
1. Release the control lever.
2. Shut off the hydraulic power source.
Procedure for connecting or disconnecting hydraulic
hoses, ttings, or components:
1. Move the ow lever on the hydraulic power
source to the OFF position.
2. Stop the hydraulic power source.
3. Follow the sequence under “Hose Connections”
in the Instruction Manual to prevent pressure
buildup. In case some pressure has built up,
loosen hoses, ttings, or components slowly.
Note: Keep all decals clean and legible, and replace
when necessary.
H4905A Hydraulic Sign Post Puller
Greenlee / A Textron Company 4455 Boeing Dr. • Rockford, IL 61109-2988 USA • 815-397-7070
6
Identification
1. Base
2. Chain
3. Serrated Jaws
4. Cylinder
5. Handle
6. Guide
7. Serial Number
8. Bracket
9. Control Lever
10. Pressure (supply) Port
11. Tank (return) Port
4
3
2
1 7
9
10
11
5
6
8
H4905A Hydraulic Sign Post Puller
Greenlee / A Textron Company 4455 Boeing Dr. • Rockford, IL 61109-2988 USA • 815-397-7070
7
Specifications
Sign Post Puller
Type of Hydraulic System: Open-center
Hydraulic Ports:
Pressure (supply): 9/16–18 SAE O-ring boss
Tank (return): 3/4–16 SAE O-ring boss
Lifting Force: 43.6 kN (9800 lb)
Stroke: 127 mm (5")
Sound Power Level: 32 Lw a
Mass/Weight: 32 kg (70 lb)
Height: 660 mm (26")
Width: 254 mm (10")
Length: 267 mm (10.5")
Hydraulic Power Source
Do not exceed the following hydraulic power source
maximums:
Hydraulic ow: 22.7 l/min (6 gpm)•
Pressure relief: 138 bar (2000 psi)•
Back pressure: 13.8 bar (200 psi)•
Failure to observe this warning could result in severe
injury or death.
Type of Hydraulic System: Open-center
Flow:
Minimum: 15.1 l/min (4 gpm)
Recommended: 18.9 l/min (5 gpm)
Maximum: 22.7 l/min (6 gpm)
Filtration: 10 micron (nominal)
Pressure Relief Setting: 138 bar (2000 psi)
Back Pressure (maximum*): 13.8 bar (200 psi)
* 13.8 bar (200 psi) is the maximum agreed stan-
dard back pressure for the HTMA (Hydraulic Tool
Manufacturers Association). Greenlee Utility tools
will operate satisfactorily at this standard.
1. Maximum hydraulic uid temperature must not
exceed 60 °C (140 °F). A sufcient oil cooling
capacity is needed to limit the hydraulic uid
temperature.
2. Hydraulic ow must not exceed 22.7 l/min (6 gpm).
Install a ow meter in the return line to measure the
rate of hydraulic ow before using the tool.
3. Pressure relief valve setting must not exceed
138 bar (2000 psi) at your tool’s maximum ow.
Locate the pressure relief valve in the supply circuit
to limit excessive hydraulic pressure to the tool.
Hydraulic Schematic
FILTER
(10 micron)
COOLER
RELIEF
VALVE
138 bar
(2000 psi)
CONTROL
VALVE FLOW METER
T
PTOOL
RESERVOIR
PUMP
POWER SOURCE
Recommended Hydraulic Fluids
Use any nondetergent, petroleum-based hydraulic
uid which meets the following specications or HTMA
specications.
S.U.S. @:
38 °C (100 °F): 140 to 225
99 °C (210 °F): 40 minimum
Flash Point: 170 °C (340 °F) minimum
Pour Point: –34 °C (–30 °F) minimum
H4905A Hydraulic Sign Post Puller
Greenlee / A Textron Company 4455 Boeing Dr. • Rockford, IL 61109-2988 USA • 815-397-7070
8
Hoses and Fittings
Installation and Maintenance
Refer to publication 99930323, SAE J1273
(Hose and Hose Assemblies).
Replacement
Refer to a Greenlee Utility catalog or publication
99910322, Low Pressure Quick Couplers, Adapters, and
Hoses.
Do not disconnect tool, hoses, or ttings while the
power source is running or if the hydraulic uid is hot.
Hot hydraulic uid could cause serious burns.
Hose Connections
Connecting Hoses
1. Move the ow lever on the hydraulic power source
to the OFF position.
2. Stop the hydraulic power source.
3. Connect the tank hose to the tank (return) port on
the hydraulic power source, and then to the tank
port on the tool.
4. Connect the pressure hose to the pressure port on
the tool, and then to the pressure (supply) port on
the hydraulic power source.
Disconnecting Hoses
1. Move the ow lever on the hydraulic power source
to the OFF position.
2. Stop the hydraulic power source.
3. Disconnect the pressure hose from the hydraulic
power source, and then from the tool.
4. Disconnect the tank hose from the tool, and then
from the hydraulic power source.
5. Install dust caps over the ports to prevent
contamination.
Typical Setup
H4905A Hydraulic Sign Post Puller
Greenlee / A Textron Company 4455 Boeing Dr. • Rockford, IL 61109-2988 USA • 815-397-7070
9
Operation
Electric shock hazard:
This tool is not insulated. Do not use
this tool near energized electrical
lines.
Failure to observe this warning could
result in severe injury or death.
Support or secure the post that is being removed.
An unsupported or unsecured post can fall.
Failure to observe this warning could result in severe
injury or death.
Do not change accessories, inspect, adjust, or
clean tool when it is connected to a power source.
Accidental start-up can result in serious injury.
Failure to observe this warning could result in severe
injury or death.
Make sure all bystanders are clear of the work area
when handling, starting, and operating the tool.
Nearby personnel may be injured by ying or falling
debris or by ying parts in the event of a tool mal-
function.
Note: Maintain proper footing and balance while using
the tool. Do not overreach. Unsuitable footing and
balance may not allow counteracting normal or unex-
pected movement of the tool.
Pinch points:
Keep hands away from moving parts
during operation.
Failure to observe this warning could
result in severe injury or death.
Pinch
Point
Pinch
Point
Pinch
Point
Pinch
Point
H4905A Hydraulic Sign Post Puller
Greenlee / A Textron Company 4455 Boeing Dr. • Rockford, IL 61109-2988 USA • 815-397-7070
10
Operation (cont’d)
1. Start the hydraulic power source.
Note: Allow the hydraulic power source to run for a
few minutes to warm the hydraulic fluid.
2. Support or secure the post so that it will not fall
when it is extracted.
3. Position the sign post puller next to the post that is
to be pulled. Level the area for a vertical pull.
4. Use either the jaws or chain as follows:
Serrated jaws: Position the jaws so that they •
rmly grip the post ange.
Chain: Wrap the chain twice around the post. •
Leaving some slack in the chain, slide one link
into each of the slots in the guide.
Using Serrated Jaws Using Chain
5. Extend and retract the cylinder until the post is
extracted from the ground.
6. When the tool is not in use, stop the hydraulic
power source to reduce heat and wear on tool
components.
Emergency stop procedure/power supply failure:
1. Release the control lever.
2. Shut off the hydraulic power source.
Maintenance
Wear eye protection when operating
or servicing this tool.
Failure to wear eye protection could
result in serious eye injury from ying
debris or hydraulic oil.
Do not change accessories, inspect, adjust, or
clean tool when it is connected to a power source.
Accidental start-up can result in serious injury.
Failure to observe this warning could result in severe
injury or death.
Use this maintenance schedule to maximize the tool’s
service life.
Notes: Keep all decals clean and legible. Replace
decals when necessary.
When disposing of any components (hydraulic hoses,
hydraulic fluid, worn parts, etc.), do so in accordance
with federal, state, and local laws or ordinances.
Daily
1. Wipe all tool surfaces clean.
2. Inspect the chains for signs of cracks, damage, cor-
rosion, or deformed links. Replace if necessary.
3. Inspect the hydraulic hoses and ttings for signs
of leaks, cracks, wear, or damage. Replace if
necessary.
4. Install dust caps over the hydraulic ports when the
tool is disconnected.
Monthly
Perform a thorough inspection of the hydraulic hoses
and ttings as described in publication 99930323,
SAE J1273 (Hose and Hose Assemblies).
Annually
Some organizations require an annual inspection. Have
the tool inspected by a Greenlee Utility Authorized
Service Center.
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