Gradall G6-42P Owner's manual

®
A Company
®
material handler
G6-42P MATERIAL HANDLER
OWNER/OPERATOR MANUAL
COVERING OPERATION & PERIODIC MAINTENANCE
KEEP OPERATOR AND SAFETY MANUALS IN CAB
Part No. 9140-4003
Revised 11-25-08
Form No. #20027
COVERS MATERIAL HANDLER MODEL G6-42P
STARTING SERIAL NUMBERS
0189001 THRU 0189345,
& 0160000230 THRU 0160004017
IMPORTANT!
Read and understand this Manual and the Gradall Material
Handler Safety Manual before starting, operating or
performing maintenance procedures on this machine.
Courtesy of Crane.Market

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IMPORTANT SAFETY NOTICE
Safe operation depends on reliable equipment and proper operating procedures.
Performing the checks and services described in this Manual will help keep your GRADALL
Material Handler in reliable condition. Following recommended operating procedures
can help you avoid accidents. Because some procedures may be new to even the
experienced operator, we require that this Manual be read, understood and complied
with by all who operate this machine.
Strict attention to, and compliance with, instructions provided in this Manual, the
GRADALL Material Handler Safety Manual, as well as instructional decals and plates
affixed to the machine will help prevent injuries to personnel and damage to the equipment.
The information provided herein is not intended to cover all situations; it is impossible to
anticipate and evaluate all possible applications and methods of operation for this
equipment.
This Manual covers recommended operating procedures and basic maintenance checks
and services for the G6-42P Material Handler. Detailed maintenance information is
available in the appropriate Service Manual.
Any procedure not specifically recommended by GRADALL must be thoroughly evaluated
from the standpoint of safety before it is placed in practice. If you are not sure, contact
your GRADALL Material Handler Distributor before operating.
Use only GRADALL authorized parts. The use of counterfeit parts may cause premature
failure which could lead to injuries and/or machine damage.
Do not modify this machine without written
permission from GRADALL. Use only genuine
GRADALL replacement parts.
OTHER NOTICES
GRADALL retains all proprietary rights to the information contained in this Manual.
GRADALL reserves the right to change specifications without notice.
Gradall is a registered trademark for Hydraulic Excavators, Hydraulic Material Handlers
and Attachments manufactured by The Gradall Company.
Courtesy of Crane.Market

11.0 9/24/01 Revised section on checking and adjusting boom.
16.0 7/22/02 Added an additional lubrication notice.
Cover 5/23/03 Revised All
Intro Revised Operator Qualification section.
TOC Added page 20.2 to Table Of Contents.
2.0 Replaced 9140-3525 Decal with 9150-3102 Decal.
2.1 Added 9134-3016 & 9141-3061 Decals & P/N to Angus-Palm Decal.
2.4 Removed 9134-3016 Decal; added 9114-3290 Decal; revised P/N on 9055-3027.
3.0 Revised Operator’s Cab section.
6.0 Revised Optional Cold-Weather Starting Aid section.
9.0 Revised Steering System section.
10.0 Revised General section.
13.1 Removed Figure 13-4, revised Load Center section.
14.7 Revised Figure 14-8.
17.0 Revised Front Axle and Rear Hub Capacities.
18.0 Revised Rear Hub Torque Values; added Flexplate Mounting Bolts Torque Values.
20.1 Added Meritor Axle to title of page.
20.2 Added page for Carraro Axle.
Cover 11/08 Added ending Serial Number
REVISIONS
This page is provided so you may determine that this Manual is complete and current with respect to Gradall
Engineering Specifications.
Page Date Revision
Form No. 20027 • G6-42P Owner/Operator Manual
Courtesy of Crane.Market

TABLE OF CONTENTS
IMPORTANT SAFETY NOTICE ..................................................... inside front cover
TABLE OF CONTENTS
INTRODUCTION
General
Operator Qualifications
Orientation
Related Manuals & Decals
Serial Number Location
NOMENCLATURE
SAFETY ................................................................................. 1.0 thru 1.2
DECALS ................................................................................. 2.0 thru 2.4
Decals Inside Cab
Decals Outside Cab
OPERATORS CAB ..................................................................... 3.0 thru 3.2
Cab
Control & Instrument Identification
CHECKS & SERVICES BEFORE STARTING ENGINE ........................ 4.0
WARM-UP & OPERATIONAL CHECKS........................................... 5.0
ENGINE OPERATION ................................................................ 6.0 thru 6.1
Starting the Engine
Cold-Weather Starting Aids
Battery-Boosted Starting
Normal Engine Operation
Stopping the Engine
BRAKE SYSTEM ....................................................................... 7.0
General
Inching Travel
Service Brakes
Parking Brakes
PARKING THE HANDLER ........................................................... 8.0
STEERING SYSTEM .................................................................. 9.0
DRIVE TRAIN .......................................................................... 10.0
BOOM .................................................................................... 11.0
LEVELING THE HANDLER .......................................................... 12.0 thru 12.1
OPERATING PROCEDURE & TECHNIQUES ................................... 13.0 thru 13.1
Hydraulic Controls
Rated Capacity Chart
ATTACHMENTS ........................................................................ 14.0 thru 14.7
Approved Attachments
Non-Approved Attachments
Carriage/Fork Capacities
Other Attachment Capacities
Attachment Installation
Attachment Operation
LOADING & SECURING FOR TRANSPORT .................................... 15.0
LUBRICATION & MAINTENANCE ................................................. 16.0 thru 16.1
RECOMMENDED LUBRICANTS & CAPACITIES .............................. 17.0
TORQUE CHART ...................................................................... 18.0
OBTAINING HYDRAULIC OIL SAMPLE FOR ANALYSIS .................... 19.0
MOVING HANDLER IN EMERGENCY ............................................ 20.0 thru 20.2
Moving Short Distances
Moving Longer Distances
To Activate Tow Bypass
To Release Parking Brake
To Restore Parking Brake
INSPECTION AND MAINTENANCE LOG
HAND SIGNALS ....................................................................... inside back cover
Courtesy of Crane.Market

Form No. 20027 • G6-42P Owner/Operator Manual
General
This Manual provides important information regarding safe operating procedures
and maintenance requirements for GRADALL G6-42P Material Handlers.
If you have any questions regarding the material handler, contact your GRADALL
Material Handler Distributor.
Operator Qualifications
Operators of the material handler must be in good physical and mental condition,
have normal reflexes and reaction time, good vision and depth perception and
normal hearing. He must not be using medication which could impair abilities
nor be under the influence of alcohol or any other intoxicant during the work
shift.
The operator should possess a valid, applicable driver’s license and must have
completed a training course meeting the OSHA Powered Industrial Truck Operator
Training Requirements (CFR 1910.178) for this type of material handling
equipment.
In addition, the operator must read/view, understand and comply with
instructions contained in the following material furnished with the material
handler:
• This Owner/Operator Manual
• GRADALL Material Handler Safety Manual
• All instructional decals and plates
• Any optional equipment instructions furnished
The operator must also read, understand and comply with all applicable Employer,
Industry and Governmental rules, standards and regulations.
Orientation
When used to describe the location of components in the material handler, the
directions “front”, “rear”, “right” and “left” relate to the orientation of a person
sitting in the operator’s seat. (See Figure I-1)
Related Manuals & Decals
Separate publications are furnished with the material handler to provide
information concerning safety, replacement parts, maintenance procedures,
theory of operation and vendor components. Replacement manuals, decals and
instruction plates can be ordered from your GRADALL Material Handler Distributor.
Models Covered
This Manual covers the G6-42P Material Handler. This unit is equipped with a
three-section boom and four-wheel drive. Optional equipment available for use
with this unit is described in appropriate sections of the Manual. Be certain to
refer to proper information for your unit and the operational equipment furnished
on your machine.
Serial Number Location
Specify Model Number and Serial Number when ordering parts and when
discussing specific applications and procedures with your Distributor. The model/
serial number plate is located inside the operator’s cab, right wall.
(See Figure I-2)
Nomenclature
The illustrations on the next page include nomenclature applied to major
components of the material handler.
NOTE!
“Material handler” and handler
are used interchangeably
throughout this Manual.
Though no offense or
discrimination is intended, only
the masculine pronouns will be
used throughout the remainder
of this Manual.
NOTE!
REAR
FRONT
RIGHT
LEFT
Figure I-1
Figure I-2
INTRODUCTION
®
20,856
20,808
D
A
B
C
** unknown **
** unknown **
** unknown **
** unknown **
3
NO
1
0
24"
24"
24"
24"
26'10"
0"
36' 24"
406 MILL AVE SW ,NEW PHILADELPHIA, OHIO 44663
GRADALL IS A REGISTERED TRADEMARK FOR
HYDRAULIC EQUIPMENT BUILT BY THE
GRADALL CO MANUFACTURED IN THE US A
AS RELEASED FROM FACTORY THIS TRUCK MEETS THE DESIGN SPECIFICATIONS
ESTABLISHED IN AMERICAN NATIONAL STANDARDS FOR POWERED INDUSTRIAL
TRUCKS PART III ASME B566b-1998
CAP#
X1000
A
B
C
D
ATTACHMENT
TRUCK &
ATTACHMENT
WEIGHT
24"
DCBA
6 6 20,460
0"
CAP#
1000
9141-3009 (-)
36' 4'6"
6 6 1 3
36' 24" 24" 0"
6 6 20,570
CAPACITY WITH STANDARD
48" & 72" CARRIAGE
48" CARRIAGE
P/N 9140-5043 *
72" CARRIAGE
P/N 9140-5045 *
SHIPPED
WITH
48" SLOPE PILER
P/N 9140-5101 *
6 6 37' 24" 24" 11 "
11"
24"24"37'
6 6
72" SLOPE PILER
P/N 9140-5079 *
*WEIGHTS ARE BASED ON USING 2 X 4 X 48" FORKS (APPROX 268# PER PAIR)
**BUCKET DIMENSIONS (A & D) REFER TO BUCKET LIP HEIGHT
***TRUSS BOOM, WINCH & QUICK HOOK DIMENSIONS (A & D) REFER TO HOOK CENTER
FORKS RATED LESS THAN THE ATTACHMENT CAPACITY SHOWN ABOVE DECREASE
CAPACITY OF ATTACHMENT TO THAT OF FORKS FORKS RATED MORE THAN
ATTACHMENT CAPACITY DO NOT INCREASE ATTACHMENT CAPACITY
(WITHOUT
ATTACHMENTS)
MATERIAL HANDLER
MODEL
MACHINE SERIAL NO
ENGINE SERIAL NO
WEIGHT
G6-42P
19,640 LBS
SAMPLE ONLY - USE CHART IN CAB
Courtesy of Crane.Market

NOMENCLATURE
FUEL TANK PLANETARY
HUB
LUG NUTS
QUICKSWITCH
ATTACHMENT
TILT CYLINDER
HYDRAULIC
RESERVOIR
BOOM
HEAD
BOOM
SECTION 3
BOOM
SECTION 2
BOOM
SECTION 1
HYDRAULIC RESERVOIR
BREATHER
LIFT
CYLINDER COUNTER-
WEIGHT
OPERATORS
CAB
OPERATORS
CAB
FRONT DRIVE
AXLE
TIE-DOWN LUGS
SWAY CYLINDER
STEERING
AXLE
CONTROL
VALVES
AIR
CLEANER
ENGINE
BATTERY
MIRROR
ENGINE VALVE
COMPARTMENT
HYDRAULIC
FILTERS
STEERING
CYLINDER
STEERING
CYLINDER
HYDROSTATIC
TRANSMISSION
IMPLEMENT
PUMP
TIE DOWN
LUGS
+-
Courtesy of Crane.Market

Form No. 20027 • G6-42P Owner/Operator Manual
Read and understand all manuals and instructional material listed on cover, inside
front cover and introduction page of this Manual before starting, operating or
performing maintenance procedures on this equipment.
Operators of this equipment must have successfully completed a training course
meeting the OSHA Powered Industrial Truck Operator Training Requirements
(CFR 1910.178) for this type of material handling equipment.
Regardless of previous experience operating similar equipment, the operator
must be given sufficient opportunity to practice with the handler in a safe, open
area (not hazardous to people or property) to gain operating skills and the
proper “feel” for controls and operating clearances required for safe, efficient
operation.
GRADALL Material Handlers are equipped with a right-side rearview mirror. This
mirror is intended as an operator’s aid and does not replace the requirement for
line-of-sight. Certain job site and machine conditions may require use of a signal
person to help the operator when picking, placing or transporting a load. Never
operate the handler until you know pick-up point, line of travel and landing point
are clear. Always be aware that objects in mirror are closer than they appear.
Safety Precautions
Make sure all DANGER, WARNING, CAUTION and INSTRUCTIONAL DECALS
are in place and can be read. Clean or replace decals as required.
Ensure handler is on a firm, level surface before lifting or placing load. Have
surface leveled if necessary. Unit can tip over if load is raised with handler
on a soft or uneven surface.
Always look in the direction of travel. Reduce speed and be especially careful
when traveling in reverse and/or turning. Be aware of tail swing due to
rear-pivot steering.
If load or conditions obstruct view, use a signal person when lifting, carrying
or placing a load.
Loose clothing can get caught in moving machinery and can also cause accidental
actuation of controls. Dress properly for the job.
Be alert to any unusual response to controls. If unusual response is noticed,
position handler in a safe area, lower forks to ground, apply parking brake, stop
engine and remove key from ignition switch. Tag steering wheel to forbid
operation and notify maintenance personnel.
Keep hands, gloves, shoes, control knobs and pedals clean. Slippery controls
can cause accidents. Keep a firm grip on the steering wheel when traveling.
Load capacities are based on load center being within 24 inches from
front vertical face of forks.
Never service the handler with the engine running.
Release trapped pressure before disconnecting, opening or removing any
hydraulic component.
This symbol indicates a hazard
which may result in injury or
damage to equipment or property
if proper precautions are not
taken.
This symbol indicates a hazard which
could result in death or serious
injury if proper precautions are not
taken.
This symbol indicates an extreme
hazard which will result in high
probability of death or serious
injury if proper precautions are not
taken.
WATCH FOR THESE SYMBOLS ;
THEY CALL YOUR ATTENTION
TO SAFETY NOTICES.
SAFETY
1.0
Operator must be seated with seat
belt fastened, forward reverse
lever in “Neutral” position, parking
brake applied and all hydraulic
controls in “Neutral” before
starting engine.
DANGER
!
WARNING
!
CAUTION
!
WARNING
!
Courtesy of Crane.Market

1.1
Keep all windows and mirror(s) clean. Adjust mirror(s) as
required for maximum
visibility, before and during opera tion.
Never permit diesel engine to run out of fuel. Doing so can cause severe
damage.
DO NOT burn or drill holes in forks. Modifying any part of machine or
attachment affects it’s capacity and/or stability of machine.
Keep head, arms, hands, legs and all other body parts inside the operator’s cab
at all times.
DO NOT approach power lines, overhead or underground cables or other power
sources with any part of your material handler or load unless all local, state/
provincial and federal regulations have been met and the appropriate utility
company’s hotline has been contacted to de-energize the lines.
Whenever leaving the cab, perform standard shut-down procedure:
Standard Shut-Down Procedure
Position the handler in a safe location, apply parking brake, lower forks to
ground, make sure all controls are in “Neutral,” allow engine to run at low idle for 3
to 5 minutes. Stop engine and remove ignition key. Block wheels.
Contact The Gradall Company prior
to welding on machine.
WARNING
!
Courtesy of Crane.Market

Form No. 20027 • G6-42P Owner/Operator Manual
1.2
Pinch Points
Stay clear of pinch points and rotating parts on the material handler.
Getting caught in a pinch point or a moving part can cause serious
injury or death. Before performing any maintenance on machine, follow
the “STANDARD SHUT-DOWN PROCEDURE” on page 1.1.
Rear Steering Axle Boom
Boom Holes Attachment Tilt Cylinder
Carriage Forks
Courtesy of Crane.Market

DECALS
2.0
INSIDE THE CAB
TRACTION LOCK
9140-3529
LOCKS FRONT & REAR AXLES
HYDRAULICALLY FOR INCREASED
TRACTION DO NOT USE ON
IMPROVED SURFACES
MACHINE MUST BE IN WORK
MODE
9132-3030
NEVER OPERATE MACHINE WITHOUT
CONSULTING PROPER CAPACITY CHART FOR THE
CARRIAGE/FORK COMBINATION BEING USED
R
9140-3618
FRONT
GENERAL
NOTES
9140-3618
LEVEL GRADALL HANDLER BEFORE LIFTING ABOVE 4 FT
USE CAPACITY CHART FOR SPECIFIC ATTACHMENT ON MACHINE
FOR OTHER ATTACHMENTS CONSULT A GRADALL DEALER
FOR LOAD RATINGS NOT LISTED
USE LARGEST NUMBER VISIBLE FROM THE CAB TO
DETERMINE BOOM EXTENSION
MATCH WITH BOOM ANGLE TO DETERMINE ALLOWABLE LOAD
FIGURES SHOWN ARE STACKING CAPACITY TRUCK LEVEL
RATED LIFTING CAPACITIES SHOWN ARE WITH MACHINE ON A FIRM,
LEVEL SURFACE WITH UNDAMAGED, PROPERLY INFLATED TIRES
MACHINE SPECIFICATIONS AND STABILITY ARE BASED ON RATED LIFT
CAPACITIES AT SPECIFIC BOOM ANGLES AND BOOM LENGTHS
IF SPECIFICATIONS ARE CRITICAL, THE PROPOSED APPLICATION
SHOULD BE DISCUSSED WITH YOUR DEALER
DO NOT EXCEED RATED LIFT CAPACITY LOADS, AS UNSTABLE AND
DANGEROUS MACHINE CONDITIONS WILL RESULT
DO NOT TIP THE MACHINE FORWARD TO DETERMINE ALLOWABLE LOAD
CERTAIN CARRIAGE/FORK COMBINATIONS MAY CAUSE HANDLER TO TIP
WITHOUT LOAD WHEN EXTENDED INTO "NO OPERATION" ZONE AS NOTED
ON CAPACITY CHART
CAPACITY LIMITS FOR THIS UNIT ARE BASED IN
ACCORDANCE WITH STANDARDS LISTED ON SERIAL
NUMBER PLATE
BACK
SAMPLE ONLY - USE CHART IN CAB
Located on dashboard
P/N 9140-3618
Located on dashboard
P/N 9141-3011
Located on right cab wall
P/N 9055-3028
Located on right cab wall
P/N 9150-3102
Located above traction lock pedal
P/N 9140-3529
Located on right cab wall
P/N 9132-3030
6000 LBS
USE WITH: 9140-5043 48" CARRIAGE
9140-5045 72" CARRIAGE
9140-5024 WINCH (4,000lb MAX CAPACITY)
9141-3011 (-)
FRONT
48" & 72" CARRAIGES
MODEL
G6-42P
DEDUCT 350 LBS
FROM ALL CAPACITIES
WHEN MACHINE IS
EQUIPPED WITH WINCH
5000 LBS
4000 LBS
2000 LBS
3000 LBS
1300 LBS
RATED CAPACITY @ 2 FT LOAD CENTER
1
2
3
4
5
6
0'
-4'
-8'
4'
8'
12'
16'
20'
24'
28'
32'
36'
40'
44'
0' 4' 8' 12' 16' 20' 24' 28' 32'
48'
-9°
0°
10°
20°
30°
40°
50°
60°
70°
6600 LBS
48" & 72" SLOPE PILER
9141-3011 (-)
BACK
DEDUCT 350 LBS
FROM ALL CAPACITIES
WHEN MACHINE IS
EQUIPPED WITH WINCH
MODEL
G6-42P
USE WITH: 9140-5101 48"
9140-5079 72"
SLOPE PILER CARRIAGE
1
2
3
4
5
6
5000 LBS
4000 LBS
2000 LBS
3000 LBS
900 LBS
RATED CAPACITY @ 2 FT LOAD CENTER
0'
0'
4'
8'
12'
16'
20'
24'
28'
32'
36'
40'
44'
-4'
-8'
4'8'
12'16'20'24'28'32'
48'
60°
70°
50°
40°
30°
20°
10°
0°
-9°
6600 LBS
SAMPLE ONLY - USE CHART IN CAB
8 ON INCLINES, TRAVEL WITH LOAD UP-GRADE
9 DO NOT USE BOOM AS WALKWAY
10 USE TWO HANDS WHEN CLIMBING ON MACHINE
1 ONLY TRAINED AND AUTHORIZED PERSONNEL MAY
OPERATE THIS MACHINE
2 BEFORE OPERATING, READ AND UNDERSTAND ALL CAPACITY
CHARTS, OPERATOR MANUALS AND SAFETY MANUALS IF
MANUALS ARE NOT AVAILABLE, CONSULT AN AUTHORIZED
GRADALL DEALER UNDERSTAND ALL CONTROLS IN CAB AND
CHECK FOR PROPER OPERATION CLEAR LOOSE OBJECTS
OFF MACHINE AND SOUND HORN BEFORE STARTING ENGINE
3 OPERATOR MUST BE SEATED WITH SEAT BELT FASTENED
ASSURE FORWARD/REVERSE LEVER IS IN NEUTRAL,PARK
BRAKE APPLIED AND ALL HYDRAULIC CONTROLS ARE IN
NEUTRAL BEFORE IGNITION SWITCH IS TURNED ON
4 DO NOT OPERATE MACHINE WITHOUT PROPER CAPACITY
CHART IN PLACE
5 BEFORE MOVING, BE SURE OF A CLEAR PATH AND SOUND
HORN WATCH FOR PEDESTRIANS AND OBSTRUCTIONS
CHECK OVERHEAD AND SIDE CLEARANCES ALWAYS LOOK
IN DIRECTION OF TRAVEL
6 START, TURN, AND BRAKE SMOOTHLY REDUCE TRAVEL
SPEEDS FOR TURNS, SLIPPERY, OR UNEVEN SURFACES
AVOID RUNNING OVER LOOSE OBJECTS OR HOLES IN THE
ROADWAY SURFACE
7 WHEN TRAVELING WITH LOAD, FULLY RETRACT BOOM AND
PLACE FORKS IN CARRY POSITION (APPROX 12" ABOVE
GROUND) TILT CARRIAGE BACK SLIGHTLY TO CRADLE
LOAD USE EXTREME CAUTION WHEN TURNING
11 USE ONLY A GRADALL MANUFACTURED PERSONNEL WORK
PLATFORM FOR LIFTING PERSONNEL NO RIDERS ON MACHINE,
FORKS, LOAD, OR OTHER LIFTING ATTACHMENTS AT ANY
TIME DO NOT USE PERSONNEL WORK PLATFORM WITHOUT THE
PROPER GRADALL MATERIAL HANDLER/PERSONNEL WORK
PLATFORM CAPACITY CHART DISPLAYED IN THE CAB DO NOT
DRIVE MACHINE WITH PERSONNEL IN PLATFORM
12 KEEP OTHERS AWAY FROM MACHINE WHILE OPERATING
DO NOT STAND UNDER BOOM OR LOAD
13 USE EXTREME CARE WHEN HANDLING LONG, HIGH, OR
WIDE LOADS DO NOT HANDLE UNSTABLE OR LOOSELY
STACKED LOADS
14 FORKS TO BE CENTERED UNDER LOAD AND SPACED APART
AS FAR AS POSSIBLE
15 BEFORE ADJUSTING OR SERVICING, PLACE
FORWARD/REVERSE LEVER IN NEUTRAL, REST BOOM ON
GROUND OR SUPPORT, SET PARKING BRAKE, SHUT OFF
ENGINE AND CHOCK WHEELS
16 BEFORE LEAVING MACHINE UNATTENDED, PLACE
FORWARD/REVERSE LEVER IN NEUTRAL, LOWER BOOM,
SET PARKING BRAKE,AND SHUT-OFF ENGINE CHOCK
WHEELS IF MACHINE MUST PARK ON AN INCLINE
17 LEVEL MACHINE BEFORE LIFTING ANY LOAD ABOVE 4
FEET (IF EQUIPPED WITH FRAME LEVELING)
18 OPERATOR PROTECTION (SUCH AS HARD HATS, SAFETY
GLASSES, AND/OR HEARING PROTECTION) SHOULD BE
WORN WHEN JOB CONDITIONS WARRANT ALWAYS USE
SEAT BELT
19 IMPROPER USE OF MACHINE COULD RESULT IN MACHINE
TIPPING OVER IF MACHINE STARTS TO TIP OVER, DO
NOT LEAVE OPERATORS SEAT LEAN AWAY FROM TIP &
BRACE YOURSELF
20 KEEP MIRROR(S) CLEAN AND PROPERLY ADJUSTED
OBJECTS IN MIRROR ARE CLOSER THAN THEY APPEAR
9055-3028 REV A
FOR SAFE OPERATION OF MACHINE AND TO MINIMIZE RISK OF
SERIOUS INJURY, READ AND OBSERVE THE FOLLOWING:
9150-3102 REV -
Courtesy of Crane.Market

Form No. 20027 • G6-42P Owner/Operator Manual
2.1
INSIDE THE CAB
Located on right cab wall
P/N 9141-3009
Located on right cab wall
P/N 9141-3012
Located on forward/reverse lever
P/N 9116-3028
Located on left side, front cab plate
P/N 9116-4094
000850
THE PROTECTION OFFERED BY THIS
ROPS WILL BE IMPAIRED IF IT HAS BEEN
SUBJECTED TO ANY MODIFICATION,
STRUCTURAL DAMAGE, OR HAS BEEN
INVOLVED IN AN OVERTURN INCIDENT
THIS ROPS MUST BE REPLACED AFTER
A ROLL-OVER SEAT BELTS MUST BE
WORN WHILE OPERATING VEHICLE
Located on back wall, behind
operator’s seat
P/N 9140-4289 (enclosed cab)
P/N 9140-4111 (open cab)
------ --------------------------
WHEEL NUT TORQUE-300/350 FT-LBS
REAR AXLE WHEEL END LUBE (4 PT ) (1 9 LTR )
-------------
------
CHECK
CENTER SECTION (15 75 QT )(14 9 LTR )
EACH WHEEL HUB (1 4 QT )(1 3 LTR )
-------------
-------------
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------
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------
** CHECK AIR CLEANER RESTRICTION INDICATOR CLEAN OR CHANGE PRIMARY FILTER IF NECESSARY
SAFETY ELEMENT TO BE CHANGED EVERY 3RD CHANGE OF PRIMARY FILTER ELEMENT
( 5 QT )( 47 LTR ) OF SUPPLIMENTAL
COOLANT ADDITIVE (SCA)
*****IF COOLANT IS ADDED TO RADIATOR ADD 3% SCA BY VOLUME
DIESEL ENGINE
AIR CLEANER ELEMENT--------------**---------------------------------------------
FUEL FILTERS--------------------------------------
OIL FILTER---------------------------------
OIL (14 5 QT ) (13 6 LTR )-----
DIESEL FUEL (38 GAL ) (143 8 LTR )
HYDRAULIC SYSTEM
------
HYD TANK BREATHER/FILTER CAP
FRONT AXLE LUBE
-------------------
QUICK SWITCH (1) FITTING-------------
TIRES: RADIAL 70 PSI ----------------
FRONT AXLE PIVOT (2) FITTINGS
ALL BEARINGS PADS
HEAD PIN (2) FITTINGS-----------****-
ANNUALLY
OR
1500 HRS
DAILY
OR
10 HRS
WEEKLY
OR
50 HRS
EVERY
5WKS OR
250 HRS
3 MO
OR
500 HRS
SERVICE INTERVALS
TYPE OR
EQUIVALENT
SAE 15W-40-CD ***
DIESEL FUEL #2
MOBIL 424
RADIATOR
(1 9 GAL ) (7 2 LTR ) WATER
(1 9 GAL ) (7 2 LTR ) ANTI-FREEZE
ETHYLENE GLYCOL
ANTI-FREEZE
RETRACT & EXTEND CHAIN SHEAVES----------------
THIS CHART MUST BE USED IN CONJUNCTION WITH SERVICE MANUAL AND RECOMMENDED PROCEDURE
**** DAILY SERVICE MAY BE REQUIRED FOR OPTIMUM LIFE DEPENDING UPON APPLICATION SEVERITY
* CHECK INDICATOR ON HYDRAULIC FILTER CHANGE FILTER IF NEEDLE IS IN RED
GRADALL HANDLER
SERVICE INSTRUCTIONS
FOR: G6-42P
AT FULL THROTTLE AND AT OPERATING TEMPERATURE
9141-3012
--------
CHECK
*****
INSPECT
CHECK
TIRES: (12 PLY)
65 PSI ------------------------------ --------------------------
CHECK
REAR AXLE (12) FITTINGS --------****-
BOOM PIVOT (2) FITTINGS---------****-
IT IS RECOMMENDED THAT FILTER ELEMENTS, FRONT AXLE LUBRICANT, AND ENGINE OIL BE
CHANGED AFTER FIRST 100 HRS ON NEW OR REBUILT UNITS
TORQUE
CHECK
CHANGE
CYLINDER FITTINGS EACH END -----****-
RETRACT & EXTEND CHAIN ---------------------
--------------------------
SEE OPERATOR & MAINTENANCE MANUAL
*** CONSULT DEALER FOR RECOMMENDATIONS AT EXTREME TEMPERATURES
MOBIL 424
------
CHANGE -------------
CHANGE
CHANGE-----
FILL --------------------------------
-------------------
-------------------
OIL (43 GAL )------------------ --------------
CHECK
CHANGE
-------------
--------------------------
GREASE --------------------------
GREASE --------------------------
GREASE --------------------------
GREASE -------------------
CHECK
GREASE --------------------------
GREASE --------------------------
GREASE
CHECK
--------------------------
-------------------
6 MO
OR
1000 HRS
CHANGE
CHANGE
FRONT BOTTOM BEARING PADS -----------
GREASE -------------------
CHECK
FILTERS--------------------------*-----------------------------
CHANGE
------ MOBIL 424
-------------------------- GREASE
------
MYSTIK TETRIMOLY
MYSTIK TETRIMOLY
MYSTIK TETRIMOLY
MYSTIK TETRIMOLY
MYSTIK TETRIMOLY
MYSTIK TETRIMOLY
MYSTIK TETRIMOLY
MYSTIK TETRIMOLY
MYSTIK TETRIMOLY
SAMPLE ONLY - USE CHART IN CAB
Located on dashboard
w/ turbo option
P/N 9134-3016
9134-3016
TURBOCHARGER DAMAGE CAN RESULT
FROM QUICK START-UP & SHUTDOWN
FOR LONGER TURBOCHARGER LIFE
AND TO MINIMIZE TURBOCHARGER
DAMAGE, IDLE ENGINE AT LEAST
3-5 MINUTES AFTER START-UP
AND BEFORE SHUTDOWN
GRADALL MATER 06 / 9 / 10
MAX WEIGHT : 2150
MEETS SAE : J1040 MA
MEETS ISO : 3471 (94) / 3
MEETS ANSI : 56.6 - 8.16 / P
GRADALL : 9114-3261 SERIAL : 8
ox 61 SD 57201
SAMPLE ONLY -
USE CHART IN CAB
®
20,856
20,808
D
A
B
C
** unknown **
** unknown **
** unknown **
** unknown **
3
NO
1
0
24"
24"
24"
24"
26'10"
0"
36' 24"
406 MILL AVE S W ,NEW PHILADELPHIA, OHIO 44663
GRADALL IS A REGISTERED TRADEMARK FOR
HYDRAULIC EQUIPMENT BUILT BY THE
GRADALL CO MANUFACTURED IN THE U S A
AS RELEASED FROM FACTORY THIS TRUCK MEETS THE DESIGN SPECIFICATIONS
ESTABLISHED IN AMERICAN NATIONAL STANDARDS FOR POWERED INDUSTRIAL
TRUCKS PART III ASME B56 6b-1998
CAP#
X1000
A
B
C
D
ATTACHMENT
TRUCK &
ATTACHMENT
WEIGHT
24"
DCBA
6 6 20,460
0"
CAP#
1000
9141-3009 (-)
36' 4'6"
6 6 1 3
36' 24" 24" 0"
6 6 20,570
CAPACITY WITH STANDARD
48" & 72" CARRIAGE
48" CARRIAGE
P/N 9140-5043 *
72" CARRIAGE
P/N 9140-5045 *
SHIPPED
WITH
48" SLOPE PILER
P/N 9140-5101 *
6 6 37' 24" 24" 11"
11"
24"24"37'
6 6
72" SLOPE PILER
P/N 9140-5079 *
*WEIGHTS ARE BASED ON USING 2 X 4 X 48" FORKS (APPROX 268# PER PAIR)
**BUCKET DIMENSIONS (A & D) REFER TO BUCKET LIP HEIGHT
***TRUSS BOOM, WINCH & QUICK HOOK DIMENSIONS (A & D) REFER TO HOOK CENTER
FORKS RATED LESS THAN THE ATTACHMENT CAPACITY SHOWN ABOVE DECREASE
CAPACITY OF ATTACHMENT TO THAT OF FORKS FORKS RATED MORE THAN
ATTACHMENT CAPACITY DO NOT INCREASE ATTACHMENT CAPACITY
(WITHOUT
ATTACHMENTS)
MATERIAL HANDLER
MODEL
MACHINE SERIAL NO
ENGINE SERIAL NO
WEIGHT
G6-42P
19,640 LBS
SAMPLE ONLY - USE CHART IN CAB
Located on dash
Starting S/N 0160001286
P/N 9141-3061
Courtesy of Crane.Market

2.2
OUTSIDE THE CAB
8060-3026
COOLING SYSTEM
IS PRESSURIZED
REMOVE CAP SLOWLY
HOT FLUID CAN
CAUSE BURNS
R
For Mobil Product Information, Call 1-800-662-4525
HYDRAULIC SYSTEM
FILL WITH TRACTOR HYDRAULIC FLUID
or equivalent
9114-3288
Genuine Parts
9
1
40
-
35
7
3
9114-3284
LEAD ACID BATTERIES PRODUCE FLAMABLE AND
EXPLOSIVE GASSES
WHEN CHECKING, TESTING, USING
BOOSTER BATTERY OR CHARGING BATTERIES:
* DO NOT USE SMOKING MATERIALS NEAR BATTERIES
* KEEP FLAMES AND SPARKS AWAY FROM BATTERIES
* WEAR SAFETY GLASSES
* ASSURE BATTERY IS NOT FROZEN AND ELECTROLYTE
IS AT PROPER LEVEL IN EACH CELL
FAILURE TO FOLLOW THESE INSTRUCTIONS COULD
RESULT IN SERIOUS INJURY OR DAMAGE TO THE
ELECTRICAL SYSTEM
9114-3285
WHEN JUMP STARTING MATERIAL HANDLER
* NEVER ALLOW VEHICLES TO TOUCH
* CONNECT THE POSITIVE (+) JUMPER CABLE TO
POSITIVE (+) POST OF DISCHARGED BATTERY
* CONNECT OPPOSITE END OF POSITIVE (+) JUMPER
CABLE TO POSITIVE (+) POST OF BOOSTER BATTERY
* CONNECT THE NEGATIVE (-) JUMPER CABLE TO
NEGATIVE (-) POST ON BOOSTER BATTERY
* CONNECT OPPOSITE END OF NEGATIVE (-) JUMPER
CABLE TO GROUND POINT ON MACHINE AWAY FROM
DISCHARGED BATTERY
* FOLLOW STANDARD STARTING PROCEDURES
* REMOVE CABLES IN REVERSE ORDER AFTER MACHINE
HAS STARTED
JUMP STARTING INSTRUCTIONS
9114-3281
STAY CLEAR OF MOVING PARTS
WHILE ENGINE IS RUNNING
MOVING PARTS CAN CAUSE
SERIOUS INJURY
Located on frame below engine cover
P/N 9108-3492
Located on radiator
P/N 8060-3026
Located on hydraulic fill cap
P/N 9140-3573
Located on engine cover
P/N 9114-3284
Located on engine cover
P/N 9114-3285
Located on frame below engine cover
P/N 9114-3288
Located on engine cover
P/N 9114-3281
Courtesy of Crane.Market

Form No. 20027 • G6-42P Owner/Operator Manual
2.3
9132-3030
NEVER OPERATE MACHINE WITHOUT
CONSULTING PROPER CAPACITY CHART FOR THE
CARRIAGE/FORK COMBINATION BEING USED
OUTSIDE THE CAB
8060-3022
AVOID HIGH VOLTAGE LINES
IT IS UNLAWFUL TO PLACE
ANY PART OF THIS MACHINE
OR LOAD WITHIN 10 FEET
OF HIGH VOLTAGE LINES
UP TO 50,000 VOLTS
DEATH OR INJURY MAY
RESULT FROM CONTACTING
ELECTRIC LINES
ADD
CHECK OIL LEVEL WITH
HANDLER LEVEL AND ALL
CYLINDERS RETRACTED
2 5 GALLON BETWEEN
ADD AND FULL MARKS
FULL
HYDRAULIC
OIL LEVEL
9140-3569
R
7733-3027
9114-3286
DIESEL FUEL IS FLAMMABLE
EXTINGUISH ALL OPEN FLAME AND
SMOKING MATERIALS WHEN REFUELING
INJURY OR DEATH COULD RESULT
FROM FIRE
9114-3283
NO RIDERS PERMITTED ON HANDLER
OPERATOR ONLY IN MACHINE
WHILE RUNNING
RIDERS COULD FALL OFF MACHINE
CAUSING SERIOUS INJURY OR DEATH
9114-3282
STAY CLEAR OF PINCH POINT AREA
ANYTIME ENGINE IS RUNNING
BEING IN PINCH POINT AREA COULD
CAUSE SERIOUS INJURY OR DEATH
Located on mud guard
P/N 8060-3022
Located on hydraulic reservoir
P/N 9140-3569
Located on mud guard
P/N 9132-3030
Located on right and left rear frame,
engine cover and boom head
P/N 9114-3282
Located on left cab wall
P/N 9114-3283
Located on left cab wall
P/N 7733-3027
Located on left cab wall
P/N 9114-3286
Courtesy of Crane.Market

2.4
OUTSIDE THE CAB
9114-3280
EXHAUST SYSTEMS CAN BE HOT
KEEP AWAY FROM EXHAUST SYSTEM WHEN HOT
HOT EXHAUST COMPONENTS CAN CAUSE
SEVERE BURNS
8060-3037-A
PINCH POINT
KEEP OUT
REACHING INTO BOOM
HOLES AND OTHER PINCH
POINTS CAN CAUSE
SERIOUS INJURY
OR DEATH
Located on right rear frame
P/N 9114-3280 Located on boom head
P/N 9055-3026
Located on left side of boom
P/N 9100-3031
Located on boom
P/N 8060-3037
406 MILL AVE S W NEW PHILADELPHIA, OHIO MADE IN U S A
DO NOT USE PERSONNEL WORK PLATFORM WITHOUT THE
PROPER GRADALL MATERIAL HANDLER/PERSONNEL WORK
PLATFORM CAPACITY CHART DISPLAYED IN CAB
9055-3033
ATTACHMENT
SERIAL NUMBER
WEIGHT
CAPACITY
HYD PRESSURE
Located on attachment
P/N 9015-3001
Located on mudguard
P/N 9055-3027
Located on personnel work platform
P/N 9055-3033
406 MILL AVE S W NEW PHILADELPHIA, OHIO MADE IN U S A
THE CAPACITY OF FORKLIFT, ATTACHMENT AND FORK
COMBINATION MAY BE LESS THAN THE CAPACITY SHOWN
ON ATTACHMENT - CONSULT FORKLIFT NAMEPLATE
AND ALSO INSURE FORKS ARE OF PROPER SIZE
9015-3001
ATTACHMENT
SERIAL NUMBER
WEIGHT
CAPACITY
HYD PRESSURE
9055-3027 REV A
READ AND UNDERSTAND THE FOLLOWING PRIOR TO LIFTING PERSONNEL
WHEN LIFTING PERSONNEL USE ONLY A GRADALL MANUFACTURED PERSONNEL WORK PLATFORM
DO NOT DRIVE MACHINE WITH PERSONNEL IN PLATFORM
WHEN PERSONNEL ARE IN PLATFORM REMAIN SEATED IN CAB WITH PERSONNEL
IN DIRECT LINE OF SIGHT
OPERATE CONTROLS LIGHTLY AND CAUTIOUSLY WHEN LIFTING PERSONNEL
READ AND UNDERSTAND PERSONNEL WORK PLATFORM USER'S MANUAL BEFORE LIFTING PERSONNEL
DO NOT USE PERSONNEL WORK PLATFORM WITHOUT THE PROPER GRADALL MATERIAL
HANDLER/PERSONNEL WORK PLATFORM CAPACITY CHART DISPLAYED IN CAB
FAILURE TO COMPLY COULD RESULT IN SERIOUS INJURY OR DEATH
9055-3026 REV A
READ AND UNDERSTAND THE FOLLOWING PRIOR TO LIFTING PERSONNEL
WHEN LIFTING PERSONNEL USE ONLY A GRADALL MANUFACTURED
PERSONNEL WORK PLATFORM
ALL PERSONNEL IN PLATFORM MUST WEAR A FULL BODY HARNESS WITH
LANYARD ATTACHED TO A DESIGNATED ANCHORAGE POINT
READ AND UNDERSTAND PERSONNEL WORK PLATFORM USER'S MANUAL
BEFORE OCCUPYING PERSONNEL WORK PLATFORM
FAILURE TO COMPLY COULD RESULT IN SERIOUS INJURY OR DEATH
9114-3290
ATTACHMENT MUST BE SECURED TO MACHINE
CHECK TO ASSURE QUICK SWITCH PLUNGER
PIN IS FULLY ENGAGED AND LOCKED AFTER
ATTACHMENT CHANGE
IF PLUNGER PIN IS NOT FULLY ENGAGED
AND LOCKED ATTACHMENT MAY FALL OFF
CAUSING SERIOUS INJURY OR DEATH
Located on left side of boom head
P/N 9114-3290
Courtesy of Crane.Market

Form No. 20027 • G6-42P Owner/Operator Manual
OPERATOR’S CAB
The standard cab permits vision from all sides and includes an overhead guard
to provide protection from falling objects.
A fully-enclosed cab with windows and a lockable door is available as an option.
The top half of the cab door must be secured in the fully-opened or closed
position. The bottom half of the cab door can be secured in the closed position
only. Be sure the door and window are fully secured when operating the
handler.
The operator’s seat is equipped with a seat belt and includes fore and aft
adjustment to compensate for variations in operator size. The adjustment
release/lock is located on the side
of seat. Wear seat belt when operating
machine.
An optional windshield wiper/washer is available for use with enclosed cabs. A
control switch is located on the instrument panel.
A variable-speed defroster fan is available for use with enclosed cabs. An “On/
Off” control switch and speed control are located on the base of the fan.
The heater fan speed is controlled by a knob on the panel to the right of the
operator’s seat. Hot water to the heater can be controlled by a knob on the
same panel or a valve in the engine compartment.
The operator’s cab is an S.A.E. “FOPS/ROPS” structure. Do not make
any modification to this structure. If damaged, the cab cannot be repaired.
It must be replaced.
CONTROL AND INSTRUMENT IDENTIFICATION
Figure 3-1
OPERATOR’S CAB
3.0
NOTE!
Relevant S.A.E. Recommended
Practices:
S.A.E. J1040 for ROPS
S.A.E. J231 for FOPS
WARNING
!
Any modification which adds
weight to this machine must be
approved by GRADALL to assure
compliance with FOPS/ROPS
certification for this cab/machine
configuration.
WARNING
!
Never operate the handler unless
the overhead guard is in good
condition.
WORK
TRAVEL
MACHINE MUST BE
IN NEUTRAL AND
PARK BRAKE ON
TO START
R
OFF
ACC
RUN
START
IGNITION
240
100
F
E
80
0
16
10
TEMP
FUEL OIL
VOLTS
- +
000000
QUARTZ
48" & 72" CARRAIGE
48" & 72" CARRAIGE
48" & 72" CARRAIGE
FORWARD/NEUTRAL
REVERSE LEVER
ATTACHMENT TILT/
MACHINE LEVEL
(STANDARD)
AUX CONTROL LEVER
(OPTIONAL)
LEVEL
INDICATOR
HOURMETER
STEERING
WHEEL
PARK BRAKE
SWITCH
BOOM CONTROL
JOYSTICK
OIL PRESSURE/
COOLANT TEMP/
VOLTMETER/
FUEL GAUGE
HORN BUTTON
CAPACITY CHARTS
4x2/4x4 SWITCH
IGNITION SWITCH
ACCELERATOR PEDAL
TRACTION LOCK SWITCH
SERVICE BRAKE/
INCHING TRAVEL PEDAL
Courtesy of Crane.Market

A brief description of controls and
instruments is provided here as a
convenience for the operator.
These descriptions DO NOT
provide complete operation
instructions. Read & understand
this Manual, the EMI Rough Terrain
Forklift Safety Manual and the
GRADALL Material Handler Safety
Manual and view the GRADALL/EMI
Operator Orientation Video.
WARNING
!
3.1
Accelerator Pedal: Depress pedal to increase speed and release pedal to
decrease speed.
Attachment Tilt Lever: This lever controls tilt of the fork carriage. Speed is
proportional to lever actuation and engine RPM. Push lever forward to tilt down;
pull lever back to tilt up.
Attachment Tilt Switch (optional): Depress left side of switch to tilt down;
depress right side of switch to tilt up.
Auxiliary Control Lever (optional): This lever is used to control optional
hydraulic attachments. Follow decal instructions for lever/handler movements.
Auxiliary Light Switch (optional): This switch turns auxiliary lights on and
off.
Boom Control Joystick: This joystick controls boom elevation and extension.
Pull joystick back to raise boom; push joystick forward to lower boom. Move joystick
to right to extend boom; move to left to retract boom. Speed of boom movement
is proportional to joystick actuation and engine RPM.
Engine Coolant Temperature Gauge: This gauge displays engine coolant
temperature.
Engine Oil Pressure Gauge: This gauge displays engine oil pressure.
Forward/Reverse Lever: This lever engages forward or reverse travel. Lift &
push lever fully forward for forward travel; lift and pull lever fully backward for
reverse travel. Move lever to centered position for “Neutral.”
Fuel Gauge: This gauge displays level of fuel in fuel tank.
Heater Fan Switch (optional): This switch turns heater fan on and off.
Horn Button: Depress button to sound horn.
Hourmeter: This meter indicates total time of engine operation in hours and
tenths of hours.
Ignition Switch: This switch is actuated by a key. In “ACC” or “RUN” position,
voltage is available for all electrical functions. Full clockwise roatation to “START”
engages starter motor. Counter-clockwise rotation to “OFF” stops engine and
removes voltage from all electrical functions.
Level Indicator: This bubble level indicator enables the operator to determine
the left to right level condition of the handler.
Lights Switch (optional): This switch controls optional lighting which may be
provided with the handler.
Machine Level Lever: This lever controls the relationship of the handler frame to
the front axle. Move the lever left to tilt frame to left, move the lever right to tilt
frame to right.
Parking Brake Switch: This switch controls the application and release of the
parking brake. Indicator light on switch glows (red) to indicate brake is applied.
Courtesy of Crane.Market

Form No. 20027 • G6-42P Owner/Operator Manual
Seat Lock Release Lever: This lever unlocks and locks seat position
adjustment.
Service Brake/Inching Travel Pedal: This pedal operates the service brakes
on the front axle. It also permits slow travel speed while engine speed is kept
high for other handler functions. The further the pedal is depressed, the slower
the travel speed. Full depression of pedal causes full service brake application.
Steering Wheel: The steering wheel controls the angle of wheels. Turning the
steering wheel to the right causes a right turn by angling rear wheels to left. A
left turn is caused by angling rear wheels to right.
Traction-lock Pedal: This pedal operates traction-lock valve which functions
to restore traction when a wheel spins in four-wheel drive.
Voltmeter: This gauge indicates alternator output and battery condition.
4x2/4x4 Switch: This switch engages and disengages rear-wheel drive motors.
Rear drive motors are engaged for four-wheel drive. Indicator light on switch
glows (amber) to indicate four-wheel drive is engaged. When park brake is
applied, light will not glow.
OPTIONAL HEATER CONTROLS
Figure 3-2
3.2
DEFROSTER FAN
AIR VENT
AIR VENT
TEMPERATURE CONTROL
BLOWER CONTROL
ACCESS COVER/
HEATER VENT
HEATER
Courtesy of Crane.Market

To be performed at the beginning of each work shift.
• If spark arrestors are required, be sure they are in place and in good working
order.
• Check to be certain that windows and mirror(s) are clean and undamaged.
Also make certain that mirror(s) are properly adjusted for operator’s view.
• Before removing filler caps or fill plugs, wipe all dirt and grease away from
the ports. If dirt enters these ports, it can severely reduce component life.
• When adding fluids, refer to lubrication section of Manual to determine proper
type.
Complete all required maintenance before operating unit.
CHECKS & SERVICES BEFORE STARTING ENGINE
4.0
Use extreme caution when
checking items beyond your
normal reach. Use an approved
safety ladder.
Before operating handler, com-
plete all required maintenance.
Replace or repair all damaged,
worn or missing components be-
fore starting or operating handler.
Failure to properly maintain han-
dler could cause serious injury or
death.
WARNING
!
WARNING
!
Service the unit in accordance with
the “Lubrication and Routine
Maintenance” schedule, pages
16.0 and 16.1.
Inspect all structural members,
including attachment, for signs of
damage.
Inspect unit for obvious damage,
vandalism and necessary maintenance.
Check for signs of fuel, lubricant,
coolant and hydraulic leaks. Open all
access doors and look for loose fittings,
clamps, components and attaching
hardware. Replace hydraulic lines that
are cracked, brittle, cut or which show
signs of leakage or abrasion.
Use a piece of cardboard or paper
to search for leaks. DO NOT use
bare hands. If anyone is injured
by hydraulic fluid, including
penetration of the skin, obtain
medical help immediately!
WARNING
!
Courtesy of Crane.Market

Form No. 20027 • G6-42P Owner/Operator Manual
To be performed at beginning of each work shift.
The safety, efficiency and service life of your handler will be increased by
performing the operational checks listed below. Items preceded by an asterisk
(*) are optional and may not be furnished on your machine.
Before entering the operator’s cab, check:
1. Air Filter Restriction Indicator. If pop-up indicator is red, filter is clogged
and element must be cleaned or changed and indicator reset.
During warm-up period, check:
* 2. Heater, defroster and windshield wiper.
* 3. Operating lights and rotating beacon.
4. Voltmeter-should show 13.5 to 14 volts.
When engine warms to operating range, check:
5. Service brake and parking brake.
6. Forward and reverse travel.
7. Steering (stop to stop in both directions) with engine at low idle.
8. Inching travel should be smooth through full pedal travel.
9. Horn and back-up alarm. Must be audible from inside operators cab with
engine running.
10. All boom and attachment functions - operate smoothly and correctly.
11. Hydraulic Filter Condition Indicator - observe engine coolant temperature
gauge after starting normal operation. When needle has been in operating
range for an hour or so, stop handler in a safe area, apply parking brake,
lower forks fully, shift forward/reverse lever to “Neutral” position and
block wheels. With engine running at full throttle, have an assistant
check the Hydraulic Filter Condition Indicator. When bar gauge is in red
area, filter is clogged and hydraulic oil is bypassing filter. Filter element
must be changed before reaching bypass condition (change before
indicator reaches red area).
Complete all required maintenance before operating unit.
WARM-UP & OPERATIONAL CHECKS
5.0
Continued operation with hydraulic
fluid bypassing the filter may cause
severe damage to hydraulic system
components.
CAUTION
!
Check all tires and rims periodically
for damage due to impact.
WARNING
!
Courtesy of Crane.Market

Starting the Engine
1. Make sure all controls are in “Neutral” and all electrical
components (lights,
heater, defroster, etc.) are turned off. Set parking brake.
2. Depress accelerator pedal approximately 1/4 to 1/3 of travel from top.
3. Turn ignition switch to “START” to engage starting motor. Release key
immediately when engine starts. If engine fails to start within 20 seconds,
release key and allow starting motor to cool for a few minutes before trying
again.
4. After engine starts, observe oil pressure gauge. If gauge remains on zero
for more than ten seconds, stop engine and determine cause. Correct
malfunction before restarting engine. Minimum pressure at operating
temperature:
Minimum: 15 PSI (105kPa)
Normal: 50 PSI (345kPa)
5. Warm up engine at approximately 1/2 throttle until engine coolant
temperature reaches operating range.
Optional Cold-Weather Starting Aids
In cold
weather situations, a supplemental starting aid may be required.
Gradall-approved starting aids employ ether. If your handler is equipped
with an optional ether starting aid, the following applies:
• Ether application is triggered by temperature gauge located on engine.
• At start-up, temperature gauge on engine will detect if ether is needed. Follow
normal start-up procedure, shown above.
• Ether is employed and additional will be released if needed, to keep engine
running.
• A second battery is added for additional cold-cranking capacity.
Battery-Boosted Starting
If you ever have to battery-boost start (jump-start) your handler, proceed as
follows:
• Never allow vehicles to touch
• Connect the positive (+) jumper cable to positive (+) post of discharged
battery
• Connect opposite end of positive (+) jumper cable to positive (+) post of
booster battery
• Connect the negative (-) jumper cable to negative (-) post on booster battery
• Connect opposite end of negative (-) jumper cable to ground point on machine
away from discharged battery
• Follow standard starting procedures
• Remove cables in reverse order after machine has started
ENGINE OPERATION
6.0
NOTE!
Engine will not start unless
forward/reverse lever is in
“Neutral” and parking brake
switch is applied.
WARNING
!
Operator must be seated with seat
belt fastened, forward/reverse
lever in “Neutral” position, parking
brake applied and all hydraulic
controls in “Neutral” before
starting engine.
Turning ignition switch to “START”
position while engine flywheel is
rotating may cause serious damage
to engine and/or starting motor.
CAUTION
!
CAUTION
!
If you use a starting aid employing
ether or a similar substance,
pay particular attention to
manufacturer’s warnings.
Excessive ether may cause severe
engine damage.
Courtesy of Crane.Market