Hyundai HL770-7A User Manual

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Photo may include optional equipment.

NEW 7A SERIES

HYUNDAI WHEEL LOADER Applied Tier III Engine

NEW 7A SERIES

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Hyundai Loaders

Meet the new generation wheel loader with Hyundai.

The HL770-7A will give you the satisfaction in higher power, lower fuel consumption, more comfort and
lower emission compared to the past.

Come and experience what Hyundai has created for you by bringing power and up to date technology.

Hardworking

Hyundai Loaders

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2

Reversible Fan

A reversible fan is optionally installed
to clean the radiator and hydraulic oil
cooler from dust and foreign objects.

Rear View Mirror

To enhance rear sight during misty or
winter conditions, electrical heated
L/R rear view mirrors are available.

FNR Switch on Joystick
Control Lever

An incorporated forward/reverse
travel switch is installed in the joy­stick to improve operators comfort.

Dual Service Brake Pedals

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Photo may include optional equipment.

Additional Option

Addition brake Pedal

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3

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Photo may include optional equipment.

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Photo may include optional equipment.

New Generation, Innovative Solution in Earth Moving, the

HL770-7A

A Centralized Display & Switch Panel

The centralized digital display informs the status and conditions of your machine at a glance.
Easy-to-read gauges on the instrument panel in front provide constant and accurate information.

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ECU TCU

MCU

Control Center

The all-new, deluxe operating space was engineered with 3-D modelling to optimize your
ultimate control centre. The wide, tinted and laminated front windshield has no framing
cutting through to ensure excellent visibility.

Adjustable steering
column

Full automatic shift lever

FNR Switch on Joystick
Control Lever

A forward/neutral/reverse travel
switch can be installed on top of it
for operators convenience.

The operator can easily control the
temperature and air flow. The
defroster on the front windshield and
rear window makes it convenient for
winter working usage.







Joystick Controls

Boom an bucket are operated by a
pilot-pressure controlled joystick.
(Option)

A single lever on the left side of the
steering column gives the operator
fast and easy control of speed and
direction. Push the lever forward to
drive forward, pull it back for
reverse. Travelling is automatically
changed from 1st stage to given
stage according to travel speed and
tractive effort. The operator can
select two kinds of automatic
modes (1st <-> 4th, 2nd <-> 4th).
This exclusive feature contributes to
a step-up in productivity and
reduction of operator’s fatigue.

Engine control Unit (ECU), Transmission
control Unit (TCU) and Machine control
Unit (MCU) realize the optimal
performance through the mutual
CAN communications.

A ride control system is available for smooth travelling during load and carry
operation. It significantly reduces machine bouncing and absorbs shocks
while travelling so enhancing productivity. This system reduces operator’s
fatigue as well as stress on the structure and components of the machine.

The Air Conditioning and Heating System

Up-to-Date-technology CAN System

Ride control system

Power Outlet & Cigar Jack

Cup Holder & Console Box

Magazine Box

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40

40

80 mm

80 mm

5

New Generation, Innovative Solution in Earth Moving, the

HL770-7A

The CUMMINS QSL electronic control
engine combines full authority electronic
controls with the reliable performance. The
combination of improved airflow and evenly
dispersed fuel results in increased power,
improved transient response and reduced
fuel consumption.
The QSL is using advanced electronic
controls to meet the emission standards
(EPA Tier III, EU Stage III-A)

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Photo may include optional equipment.

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Photo may include optional equipment.

QSL Engine

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CUMMINS

6

A Well Rounded System

Maximize the productivity of your business with the HL770-7A.
With our vast experience in the production of construction equipment, Hyundai is able to meet
the demand of our customers.

Left and right access door Bucket cylinder guard

This guard helps to prevent possible
damage while loading material.

Wear plate

This close up shows the protective
plating found underneath the rear of
the bucket and is used to prevent
excess wear when digging into
material.

High-rigidity frames

Front and rear frames are designed
for work in the toughest applications
and provide high rigidity for the
power train and loader equipment.
The sturdy frames, together with the
reinforced front/rear frame linkage,
resist loading stress and shock
within operation.

Master switch

A master switch disconnects the battery power
to protect the electrical system from excessive
electrical drainage.

Sealed loader linkage

Fully protected fitting including dust seals and o­rings on the bucket linkage will extend lubrication
intervals remarkably.

Frame lock

Machine can be locked by a locking bar to
prevent movement during transportation.

Multi Function Transmission

The newly developed electronic controller represents the beating heart of the transmission. The hydraulically
operated gear shifting with proportional valves allows precise clutch operation. For each gear change, the control
unit performs a monitoring function to ensure that the specified shift curve is adhered to, and readjusts the shift
pressure applied to the clutches accordingly. This result in smooth gearshifts under load without traction
interrupts. It also prevents standstills, sudden load changes or torque peaks during operations such as steep hill
driving with full load. In addition, there is the option for the driver to make manual gearshifts.

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Accessible and Serviceable

New Generation, Innovative Solution in Earth Moving, the

HL770-7A

Accessible grease fittings

Grease fittings are highlighted
and available around the machine
for fast access when doing your
service checks.

Simple air filter
replacements

The air cleaner is easily replaceable
by turning the wing nut on the outer
shell counter-clockwise.

Open pin access

You can quicker remove or tighten
your front attachment pin
(chromated) with this open
connector system.

Remote type drain port

It is now easier to change your
engine oil, coolant and hydraulic oil
with the remote drain port.

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An ideal arrangement of components ensures quick and convenient maintenance.
Highly accessible engine compartment assures fast and efficient repairs when necessary.

Hydraulic tank

The hydraulic tank is located behind the cab to facilitate the accessibility of
hydraulic hoses and pipes.

Oil sight gauge

A sight gauge is installed on the side
of the hydraulic tank for convenient
ground level check out.

Transmission oil port

The transmission oil change port is
openly accessible. It comes with an
anti-vandalism lock for machine
protection.

Central electric controllers &
Fuse Box

Electric controllers and a concentrated fuse box
are centralized to improve serviceability.

Cabin Air Fresh Filter

The internal pressure is maintained slightly higher
than the outside to exclude dust from entering in
and reduce noise levels to the cabin.

Coolant Sight Gauge

A coolant sight gauge is installed on the top
of the radiator for convenient checks of
coolant level.

Easy Access to All Engine
Components

Up-to-date hydraulic remote
cooling fan

Here you find the engine oil check,
main and pre-filters (fuel, oil,
coolant). The large engine-side­panels permit easy and safe
access for inspections. The filters
can be screwed on and off for
quick replacements.

Minimum fuel consumption and
low noise is realized by using a
hydraulic cooling fan sensing
coolant temperature, intake air
temperature, transmission oil
temperature and hydraulic oil
temperature. Reversible cooling
fan is installed.

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Specification

Engine

Maker/Model

Type

Gross power

Net power

Maximum power

Maximum torque

No. of cylinders

CUMMINS QSL

Bore x Stroke

114 mm (4.5”) x 145 mm (5.7”)

Displacement

8.9 litre (543 cu in)

Compression ratio

17.8 : 1

Air cleaner

Dry, dual elements

Alternator

24 V, 70 Amp

Battery

2 x 12 V, 160 Ah.

Starting motor

24 V, 7.5 kW

Transmission

Axles

Hydraulic System

Torque converter type

Stall torque ratio

3-elements, single-stage single-phase

2.985 :1

Drive system

Four-wheel drive system

Type

Open-centered, tandem circuit system.

Pilot-operated controls.

Closed with pressure and vacuum relief.

Bucket Controls

Type

Lift Circuit

Tilt Circuit

Cylinder

Cycle Time

Pilot operated lift and tilt circuit,

single-lever (joystick) control standard.

The valve has four functions:

raise, hold, lower and float.

Can adjust automatic kick-out from

horizontal to full lift.

The valve has three functions:

tilt back, hold and dump.

Can adjust automatic bucket positioning

to a desired load angle.

Type: Double acting

No. of cylinders-bore x stroke;
Lift 2-180 mm (7.1") x 765 mm (30.1")
Tilt 1-200 mm (7.9") x 570 mm (22.4")

Raise: 5.5 sec (with load)

Dump: 1.3 sec

Lower: 2.8 sec (empty)

Total: 9.6 sec

Pump

Vane type, 425 liters/min

(108.6 gal/min)@governed rpm

Control Valve

Two function valve with single or two

lever control:

Optional third-function valve with

auxiliary lever.

Relief Valve Setting

Relief Valve Setting

20,5 MPa (2990 psi)

2,9 MPa (427 psi)

Pilot System Type

Pilot oil pressure is generated by the pilot

oil supply unit.

Mount

Rigid front axle and oscillating rear axle

Rear axle oscillation

+/-13° (total 26°)

Hub reduction

Planetary reduction at wheel end

Differential

Differentials, limited slip (front/rear)

Reduction ratio

24.685

Travel speed

km/h (mph)

7.3 (4.7)

Forward

1st

2nd

3rd

4th

Reverse

1st

2nd

3rd

12.1 (8.0)

25.7 (14.7)

36.7 (22.6)

7.3 (5.0)

12.1 (8.4)

25.7 (15.3)

4-cycle, turbocharged, charge air-cooled

direct injection, electronic controlled

diesel engine

209 kW (280 HP) at 2,000 rpm

198 kW (266 HP) at 2,000 rpm

231 kW (310 HP) at 1,700 rpm

1,480 Nm (1,070 lbf.ft) at 1,400 rpm

6

*

Net power output of standard engine as installed in this vehicle(per SAE J1349) complete with fan, air cleaner, alternator, water pump, lubricating oil pump and fuel

pump. No derating for continuous operating required up to 1829 m (6,000 ft). This engine meets the EPA(Tier III-A) / EU(Stage III-A) Emission regulation.

* Full automatic power shift, countershaft type with soft-shift in range and
direction. Properly matched torque converter to engine and transmission for
excellent working ability.

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10

Specification

Dimensions

Service Brakes

Brakes

Service Refill Capacities

Overview Tires

Steering System

Hydraulically actuated, wet disc

brakes actuate all 4 wheels

independent axle-by-axle system.

Single pedal braking including

clutch cut off switch.

Type

Full hydraulic power steering

Pump

Vane type, 270 liters/min

(65.5 gal/min)

Relief Valve Setting

20,5 MPa (2990 psi)

Cylinder

Type

Bore x Stroke

Double acting

100 mm (3.9") x 480 mm (18.9")

Steering Angle

Features

- Centre-point frame articulation

- Flow-amplified, load-sensing, pressure-compensated system

- Steering-wheel operated metering pump controls flow to steering cylinders

- Tilt and telescopic steering column

40° (each direction)

Parking Brake

Spring-applied, hydraulically released

disc brake on front axle input shaft.

Emergency Brake

When brake oil pressure drops,

indicator light alerts operator and

parking brake automatically applies.

Fuel tank

Description UNIT

Operating weight kg (lb)

Bucket capacity

Tipping load

Heaped m

3

(yd3)

Struck

Description

mm (ft-in)

mm (ft-in)

mm (ft-in)

mm (in)

mm (ft-in)

mm (ft-in)

mm (ft-in)

mm (ft-in)

UNIT

Bucket Type

Description UNIT

mm (ft-in)

mm (ft-in)

mm (ft-in)

mm (ft-in)

mm (ft-in)

deg

deg

mm (ft-in)

mm (ft-in)

mm (ft-in)

G. Front overhang

H. Wheelbase

I. Ground clearance

J. Height over exhaust

K. Height over cab

Clearance circle

N. Overall width

with bucket

without bucket

C. Digging depth

E. Overall height (fully raised)

F. Bucket pivot max. height

General purpose bolt-on cutting edge

A. Dumping clearance at max.

height and 45° dump angle.

B. Reach

Full lift

7ft height

D. Overall length

on ground

at carry

L. Roll-back angle
M. Dump angle

m

3

(yd3)

Breakout force-bucket kg (lb)

Straight kg (lb)

Full turn

kg (lb)

430 litres (113.6 USgal)

Cooling system

56 litres (14.8 USgal)

Crankcase

23 litres (6.1 USgal)

Transmission

52 litres (13.7 USgal)

Front axle

78 litres (20.6 USgal)

Rear axle

53 litres (14.0 USgal)

Hydraulic tank

200 litres (52.9 USgal)

Hydraulic system

(including tank)

320 litres (84.6 USgal)

Type

Tubeless, loader design tires

Standard

Options include

on ground / at carry

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HL770-7A

23,100 (50,930)

4.0 (5.2)

3.45 (4.5)

20,760 (45,770)

17,570 (38,730)

15,250 (33,620)

HL770XTD-7A

23,850 (52,580)

4.0 (5.2)

3.45 (4.5)

20,430 (45,040)

15,840 (34,920)

13,400 (29,540)

E

F

A

L

C

M

B

I

HG

D

J

K

26.5-25, 20 PR, L3

26.5 R25 XHA*

26.5-25, 28 PR, L3

26.5-25, 32 PR, L3

23.5-25, 20 PR, L3

26.5-25, 20 PR, L5

N

HL770-7A

3,117 (10’ 3”)

1,254 (4’ 1”)

1,890 (6’ 2”)

98 (3.9”)

8,635 (28’ 4”)

8,530 (28’)

5,870 (19’ 3”)

4,310 (14’ 2”)

HL770XTD-7A

3,570 (11’ 9”)

1,260 (4’ 2”)

2,250 (7’ 5”)

130 (5.1”)

9,100 (29’ 10”)

9,020 (29’ 7”)

6,320 (20’ 9”)

4,760 (15’ 7”)

HL770-7A

2,940 (9’ 8”)

3,440 (11’ 3”)

480 (1’ 7”)

3,470 (11’ 5”)

3,550 (11’ 8”)

44 / 49

48

14,070 (46’ 2”)

3,100 (10’ 2”)

2,975 (9’ 9”)

HL770XTD-7A

3,350 (12’)

3,440 (11’ 3”)

480 (1’ 7”)

3,470 (11’ 5”)

3,550 (11’ 8”)

44 / 50

48

14,450 (47’ 5”)

3,100 (10’ 2”)

2,975 (9’ 9”)

11

5.2
(6.8)

4.9
(6.4)

4.6
(6.0)

4.3
(5.6)

4.0
(5.2)

3.7
(4.8)

3.4
(4.4)

1400

2000 2500 3000 3500 4000

1600 1800 2000 24002200

HL770-7A
HL770XTD-7A

kg/m

3

lb/yd

3

23.5-25 20PR L3

26.5-25 28PR L3

26.5-25 32PR L3

26.5 R25 XHA*

26.5-25 20PR L5

-472 (-1041)

-4 (-9)

+164 (+362)

+108 (+238)

+768 (+1,693)

-345 (-760)

-3 (-7)

+120 (+265)

+80 (+176)

+560 (+1,235)

-305 (-672)

-3 (-6)

+106 (+234)

+70 (+154)

+496 (+1,093)

Electrical system

Alternator, 70A
Alarms, audible and visual

.

air filter clogging

.

transmission error

.

alternator voltage

.

brake oil pressure

.

engine oil pressure

.

parking brake

.

fuel level

.

hydraulic oil temperature

.

coolant temperature

.

service brake oil pressure

Batteries, 1000 CCA, 12V, (2)

Gauges

.

engine coolant temperature

.

fuel level

.

hydraulic oil temperature

.

speedometer

.

transmission oil temperature

.

voltmeter
Horn, electric
Indicator lights

.

clutch cut-off

.

high beam

.

turn signal

.

work light

LCD Display

.

clock and fault code

.

operating hour counter

.

engine rpm

.

transmission gear range indicator

.

job time and distance

.

temperature (coolant,
hydraulic oil, t/m oil)

Lighting system

.

2 dome lights

.

2 stop and tail lights

.

4 turn signals

.

brake lights(counterweight)

.

license plate light

.

head light

2 on front tower

.

working lights

2 on front roof
2 on grill

Switches

.

clutch cut-off

.

hazard

.

ignition key, start/stop switch

.

main light (illumination and head
light)

.

parking

.

rear wiper & washer

.

work light

.

master switch

.

full automatic transmission
Starter, electric
Starting and charging system
(24-volt)

Cab

Air conditioner with heater
Cab, ROPS/FOPS
(sound suppressed and pressurized)

with :

.

cigar lighter & ashtray

.

coat hook

.

front/rear window defroster

.

intermittent wiper and washer,

front and rear

.

personal storage space:

console box
cool & hot box
holder, can and cup

.

rear view mirrors (2 inside)

.

rear view mirrors (2 outside)

.

seat belt

.

seat, adjustable suspension with

armrests

.

steering column, tilt and

telescopic

.

steering wheel with knob

.

sun visor (front window)

.

tinted safety glass

.

two door cab, fixed glass
Magazine box
Pedals

.

one accelerator pedal

.

one brake pedal
Radio CD player
Rubber floor mat
Wrist rest

Engine

Antifreeze
Engine, Cummins QSL

.

Low Emission Diesel, Tier-lll
Engine enclosure, lockable
Engine fuel priming pump
Fan guard
Fuel/water separator
Muffler, under hood with large

exhaust stack

Pre-cleaner, engine air intake
Radiator
Starting aid (air intake heater)
Water sensor on fuel filter

Power Train

Brakes: Service, enclosed wet-disc
Differentials, limited slip (front/rear)
Parking brake
Torque converter
Transmission, computer-controlled,

electronic soft shift, auto-shift and
quick-shift features included

Transmission oil cooler

Hydraulics

Boom lock safety valve
Boom kick-out, automatic
Bucket positioning, automatic
Emergency steering system
Diagnostic pressure taps
Hydraulic oil cooler
Hydraulic system,

.

2 spool, single lever, pilot control

for boom and bucket actuation
FNR switch on joystick control lever
Steering, load-sensing
Remote cooling fan, hydraulically-

driven, temperature sensing type

Others

Articulation locking bar
Coolant level sight gauge

Counterweight
Door and cab locks, one key
Doors, service access(locking)
Drawbar with pin
Engine oil level dipstick gauge
Ergonomically located and slip

resistant, left & right

- handrails

- ladders

- platforms

- steps
Fenders (front)
Guard, bucket cylinder rod
Hydraulic oil level sight gauge
License plate bracket
Lift and tie-down hooks
Loader linkage, sealed Z-Bar design
Steering stops, cushioned
Tires (26.5-25, 20PR,L3)
Transmission oil level dipstick gauge
Vandalism protection cap locks
Alarm, back-up
Ride control system
Reversible cooling fan system

24-volt to 12-volt DC converter
3 spool
Air condition :

.

air conditioner

.

heater
Beacon light, rotating
Cutting edge, bolt-on type
Dual brake pedal
Fenders (rear-mudguard)

Fire extinguisher
Fuel warmer
Guards

.

crankcase

.

transmission

High lift arrangement with additional

counterweight, 505 kg (1110 lb)
Hydraulic control, 2 levers
Hydraulic control, 3 levers

Hydraulic arrangement 3-valve
Lighting, auxiliary, 4 on roof
Mud guard
Open Canopy (None-ROPS)
Operator suit
Rear view mirrors heated (2 outside)
Seat

.

2” static seat belt & adjustable

mechanical suspension (vinyl)

.

3” retractable seat belt

.

3” retractable seat belt &

adjustable air suspension

Tires :

.

23.5 - 25, 20PR, L3

.

26.5 - 25, 28PR, L3

.

26.5 - 25, 32PR, L3

.

26.5 - 25, 20PR, L5

.

26.5 R25 XHA*

Tool kit
Tooth, 1 piece, bolt-on type
Tooth, 2 pieces, bolt-on type
Window, sliding (left and right side)
Wheel chock

Standard and optional equipment may vary. Consult your Hyundai dealer for more information. The machine shown may vary according to territorial specification.

Bucket Selection Guide

Standard Equipment

Optional Equipment

Supplemental Specifications

Description

Change in operating

weight kg (lb)

Change in static

tipping load-straight

kg (lb)

Change in static

tipping load-40° turn

kg (lb)

Bucket Capacity, m

3

(yd

3

)

Material Density

PLEASE CONTACT

www.hyundai-ce.com EN - 2007.06 Rev 0

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