PDF Operator’s Manual Genie GTH-1256 Telehandler - 370 KB
This operator's manual is the essential guide for the Genie GTH-1256 Telehandler equipped with the Deutz Tier 4 Final engine.
It covers all aspects of safe operation, daily maintenance checks, and machine capabilities.
Understanding this manual is crucial for maximizing productivity while ensuring safety on the job site.
Keep this document accessible to all operators to promote correct and efficient use of the equipment.
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Operator’s Manual
Serial number range
From GTH12M-301
GTH-1256 (Deutz Tier 4 Final) to GTH12M-400
Original Instructions
First Edition
Third Printing
September 2017
Part No. 57.0009.0731
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First Edition - Third Printing September 2017
Work Area Safety
Lateral inclination allowed during working
Do not raise a load unless the load
phase ± 0,5°
is properly positioned or secured on
the forks or approved attachment. Only use the machine on firm ground capable of
supporting the maximum combined load of the
machine and payload. If the subsoil collapses,
Do not operate the machine in strong or gusty winds. the machine could tip over. To avoid any risk of
Do not increase the surface area of the carriage or overturning, the following precautions should be
load. Increasing the area exposed to the wind will taken:
decrease machine stability. • Ask your employer (site manager or manager
assistant) if there may be buried pipes, pits,
Use extreme care and slow speeds while driving the old tanks, cellar floor, dung yards, etc. under
machine in the travel position across uneven terrain, the ground onto which the stabilizers shall be
steep grades, debris, unstable or slippery surfaces lowered.
and near holes and drop-offs.
• Site ground consistency can be roughly estimated
using the tables and picture in this page.
Do not alter or disable machine components that in
any way affect safety and stability. • The resistance of the subsoil is in relation to the
ground type and soil characteristics.
Do not replace items critical to machine stability with Table 1 indicates the superficial pressure which may
items of different weight or specification. be allowed under the stabilizers of the machine.
Do not replace factory-installed tires with tires of Type of ground, Allowable
different specification or ply rating, unless approved soil characteristics superficial pressure
by the factory.
kPa / psi
If using accessories, read, understand and obey the loose, non-compact soil generally speaking,
decals, instructions and manuals with the accessory. not solid;
loamy, peaty,pasty soil special precautions
rippable, soft ground needed
non-cohesive, well com-
200 / 29
pact soil, sand, gravel
solid 100 / 14.5
rippable semi-
200 / 29
soil solid
hard 400 / 58
Rocks, concrete, heavy above
traffic paved roads 1000 / 145
Table 1
Part No. 57.0009.0731 GTH-1256 9
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First Edition - Third Printing September 2017
Controls
1 Steering wheel handle back and the forks will tilt up. Hold down
the grey thumb switch and push the Control
Turn the steering wheel to the right to turn the
handle forward and the forks will tilt down. Hold
front wheels to the right. Turn the steering wheel
the grey finger switch and push the Control
to the left to turn the front wheels to the left.
handle to the right and the machine will sway
2 Horn button to the right. Hold the grey finger switch and pull
the Control handle to the left and the machine
Press this button and the horn will sound. Release
sway to the left.
the button and the horn will stop.
10 Auxiliary hydraulics switch
3 Heater and air conditioning controls (if equipped)
Push the left side of the auxiliary hydraulics button
4 Turn signal lever/Hazard warning lights (if and the carriage will swing or rotate to the left.
equipped) Push the right side of the auxiliary hydraulics
Move the lever forward to activate the left turn button and the carriage will swing or rotate to
signal. Move the lever backward to activate the the right.
right turn signal. Push and Hold the Lock/unlock enabling switch 19
Rotate the end of the lever backward to activate and push the left side of the auxiliary hydraulics
the hazard warning lights. Rotate the end of the button to lock the attachment; Push and Hold
lever forward to deactivate the hazard warning the Lock/unlock enabling switch 19 and push
lights. the right side of the auxiliary hydraulics button
to unlock the attachment.
5 Steering mode selector
11 Axle differential lock switch
Rotate the steer selector to the right side to select
four-wheel steer. Rotate the steer selector to the Push and hold the switch to activate the axle
middle position to select two-wheel steer. Rotate differential lock. Release the switch to release
the steer selector to the left to select crab steer. the axle differential lock.
6 Parking brake switch 12 Accelerator pedal
Push the bottom of the rocker switch to turn the 13 Brake pedal
parking brake on. Push the top of the switch to 14 Windshield wiper switch (if equipped)
turn the parking brake off.
Push the switch to turn the wiper on: first position
7 Ignition switch for low speed and second position for high speed.
Push the top of the switch to turn the wiper off.
Turn the key until the engine starts; when
released, key springs back to pos. I automatically. 15 Windshield washer switch (if equipped)
Position P is not active. Push and hold the switch to turn the washer on.
Release the switch to turn the washer off.
8 Instrument panel
16 Road lights switch (if equipped)
9 Control handle
Push the bottom of the switch to turn the road
Pull the Control handle back and the boom will lights on. Push the top of the switch to turn it off.
raise. Push the Control handle forward and the
boom will lower. Push the Control handle to the 17 Work light switch (if equipped)
right and the boom will extend. Pull the Control Push the bottom of the switch to turn the boom
handle to the left and the boom will retract. Hold working light on. Push the top of the switch to
down the grey thumb switch and pull the Control turn it off.
Part No. 57.0009.0731 GTH-1256 19
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First Edition - Third Printing September 2017
Inspections
Test the Rear Proximity Alarm System As the machine moves away from the object,
(if equipped) the display should show the green light on,and
no alarm should be sounding.
The system provides a visible and audible indication
of objects behind the machine, when they are within 57 Stop the machine, place the transmission in
the detection range of the sensor and while in reverse neutral and turn off the engine.
gear.
Be sure that there are no personnel and obstacles
behind the machine which the sensor may detect
on startup.
53 Locate a sizable item, like a safety cone or pallet
of bricks, that the sensor will detect and position
the rear of the telehandler about 15 feet / 4.5
meters in front of it. Do not perform the function
test if there are people behind the machine.
54 Set the parking brake, place the transmission into
neutral and start the engine. Press and hold the
brake pedal and place the transmission in reverse.
Result: The green power light on the rear proximity
display should be on. If the green power light is
not on, the system needs to be repaired.
55 Release the parking brake and slowly let up on
the brake pedal and slowly approach the object.
Stop the machine before it reaches the object.
Result: The rear proximity display should show
an orange light on. The alarm should sound with
increased frequency as the machine approaches
the object.
56 Place the transmission in forward and slowly
drive away from the object.
The rear proximity display should show an
orange light on, and the alarm should sound
with decreased frequency as the machine moves
away the object.
Part No. 57.0009.0731 GTH-1256 29
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First Edition - Third Printing September 2017
Operating Instructions
Placing the load 7 Gradually move the controller to lower and
extend the boom into final position. Lower the
1 Travel to the desired work site and carefully load until the weight is completely off the forks.
stop the machine. Do not apply a downward force with the forks.
2 Put the transmission in neutral.
3 Apply the parking brake.
4 Lower the stabilizers, if your configuration
requires it.
5 Level the frame, if the left to right level
indicator or the front to back level indicator is
not at 0 degrees.
6 Gradually move the controller to raise and
extend the boom to the required height.
8 Gradually move the controller to raise and
retract the boom. This will bring the forks out
of the load.
9 When the forks are clear of the load and
the structure, the boom can be lowered and
retracted.
Part No. 57.0009.0731 GTH-1256 39
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First Edition - Third Printing September 2017
Maintenance
Check the Engine Oil Level
Maintaining the proper engine oil level is essential 3 Visually inspect the DEF indicator light on the
to good engine performance and service life. dashboard.
Operating the machine with an improper oil level
can damage engine components. Result: Light flashing indicates DEF level is low.
Note: Check the oil level with the engine off. 4 Add DEF as needed. Do not overfill.
1 Check the oil level dipstick. Add oil as needed. DEF specifications
Deutz 3.6 TCD L4 tier 4f DEF type ISO 22241-1
Oil type SHELL RIMULA R4 L 15W-40
Check DEF Level Check the Hydraulic Oil Level
Maintaining DEF (diesel exhaust fluid) at the
proper level is essential to machine operation. Maintaining the hydraulic oil at the proper level is
Operators should monitor the indicator light during essential to machine operation. Improper hydraulic
use to identify changes in DEF level that might oil levels can damage hydraulic components. Daily
indicate the presence of system problems. Add checks allow the inspector to identify changes
DEF each time fuel is added or add DEF when the in oil level that might indicate the presence of
indicator light is on. hydraulic system problems.
Always use DEF fluid from a fresh, sealed 1 Be sure that the engine is off, the frame is
container. DEF fluid can degrade if left in a level and the boom is in the stowed position.
unsealed container or if it is not used by the 2 Visually inspect the sight gauge located on the
expiration date. left side of the hydraulic oil tank.
1 Be sure thet the engine is off, the frame is Result: The hydraulic oil level should be
level and the boom is in the stowed position. halfway in the sight gauge.
2 Turn the key switch to the on position. 3 Add oil as needed. Do not overfill.
Hydraulic oil specifications
Hydraulic Oil type
GAZPROMNEFT HYDRAULIC HDZ 46
Part No. 57.0009.0731 GTH-1256 49
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First Edition - Third Printing September 2017
Attachments
Lifting a Suspended Load Travelling
Verify that landing point is level and can safely Be sure that the path of travel is level and capable
support the load. of supporting the telehandler with its load.
Properly secure the attachment to the telehandler. Keep the boom, and load, as low as practical while
maintaining visibility in the direction of travel.
Level the frame on the telehandler.
Ask a signal person to assist with your travel if
Rig the load as outlined in OSHA 29 CFR visibility will be obstructed in the direction of travel.
1926.1401, 1926.1404, and 1926.1425, keeping
the heaviest part of the load as close to the Crush or Collision Hazard. Make sure that the
attachment as practical. signal person remains in constant communication
and be in visual contact at all times.
Tether the load to restrict movement.
Only make adjustments to the load after bringing
Ask a signal person to assist with lifting the load if the telehandler to a complete stop.
visibility will be obstructed at the point of operation.
Start, stop, travel and turn slowly to prevent the
Make sure that the signal person remains in load from becoming unstable or swinging.
constant communication and is in visual contact at
all times. Do not travel faster than walking speed (<2 mph /
3.2 km/h).
With the boom retracted as far as practical, slowly
and gradually raise the boom and load, making
sure to keep the load and boom as low to the
ground as practical.
Be sure that all boom and attachment movements
are performed as slow as practical to avoid
swinging of the load.
Part No. 57.0009.0731 GTH-1256 59