Used Doosan DH420 crawler Excavator 220kw rated power 42 ton weight 1.5m³ bucket capacity

Large size used excavator is rarely to find especially a good one, If you are looking for a large

size used crawler excavator, you can consider this one. As an multiple functions machine for

mining and large-scale civil construction, this used DX420 excavator has gained many fans

with its powerful performance, high reliability and comfort.

Display of components

Our company have a professional team which take charge of maintaining these used excavator

and construction equipments daily. And we can promise that every component in each equipment

is original without any quality problems and modification.

Product specification

You are welcome to ask for more details and information from our staffs about this used

Doosan DH420 excavator.

Product maintenance

Such a large size used excavator is definitely a complex machines. But maintaining them doesn’t

have to be. Follow the steps in your Operation and Maintenance Manual, stick to a routine

maintenance schedule and perform a thorough walkaround inspection on used excavators.

1. undercarriage

The undercarriage problems of the used crawler excavator can account for more than half of

your maintenance costs. It’s not just the most expensive part of your excavator — it’s also

exposed to near-constant wear and stress. Clean out any dirt and debris collected during a

shift to help prevent buildup that could accelerate wear. (It can also hurt fuel economy by

adding extra weight.) And perform a thorough inspection every shift to look for missing or

damaged components or uneven or excess wear.

2. tracks

Make sure your used hydraulic excavator’s tracks are set at the proper tension. They’ll wear

more quickly if they’re too tight or too loose. Chains and sprockets can also wear prematurely

if tracks aren’t maintained correctly. As you examine the tracks, keep an eye out for any wear

to the common track components - track shoes, pins, chains, idlers, sprockets and fasteners.

3. Filters

Filters keep your excavator’s engine, air, fuel and hydraulic systems running smoothly. Most

used track excavators come with an indicator that lets you know when filters need attention.

Act quickly when alerted to change filters to avoid the contamination that can lead to costly

damage and downtime.

4. water separator

If you leave your excavator outside overnight, condensation can cause water to build up in

the primary fuel filters. Used excavators come with water separators on these filters, and a

sensor inside the cab tells you when water has collected there. Drain it when indicated or it

can lead to corrosion and damage.

5. cooling system

Adequate airflow and coolant levels allow your used excavator excavator to run efficiently.

Both are especially important if you work in a very hot climate — you don’t want your machine

to overwork just to keep cool. Be sure to inspect coolant hoses for leaks. Also, apply low-pressure

water or air to clean the oil cooler, condenser and radiator. Reversing fans are a key feature

on these second hand excavators to help maintain a clean radiator.

6. Your used excavator’s work tools do the work — so don’t overlook them in your daily inspection.

Check any attachments, including couplers, for cracks, excessive wear or signs of damage

that could hamper your productivity and safety. Using a bucket? Inspect it for cracks, bowing,

pin and bushing wear. Look for abnormal wear to the adapters, teeth, cutting edges, and side

cutters. And make sure all work tools are securely attached to the machine for safety.

Excavator, loader, roller, truck, crane, grader, forklift and other kinds engineering

machinery equipment and parts，including brands like: Caterpillar, Komatsu,

Hitachi, Kobelco, Volvo, Doosan, Hyundai, SANY, etc,.

Since 2016, Mingjue have expanded our business into foreign trade and focused

on one-stop customization of used engineering machinery products such as：

• used track excavators,
• used wheel excavators,
• used loaders,
• used bulldozer,
• used grader 
• used road 
• used crane 
• used forklift​

There are more than 3'000 second hand excavators and over ten kinds of construction

equipemnts in our warehouse. We has been pursuing best cost-performance used

excavators from construction companies and individual sellers all over the world

for our customers. 

To realize more demands, we also have cooperated with some famous domesticated

companies to get their products at low price.

Our company is committed to construction machinery exportation. There are more

than 100 countries we have corporated for decades.

1. Selling and reception: As a golden supplier, our company can provide various

selling service.If you have decided to visit our company in person, you can tell us

your information about your flightand we will make arrangements including the

transport and accommodation services.

2. Maintenance: Our company have brilliant machinery team to maintain all the

used excavator and other construction equipments, including regular maintenance,

trouble shooting, replacement of parts, etc, to avoid any potential quality problems.

3. Original auxiliary attachement and installment: Provide all kinds of original

excavator accessories in different brands including auger, breakerlog, grapple,

hydraulic quick hitch, rakeforklift and so on. And we can finish the installment

before shipment if you need.

4. Finance support: Provide customers with financial leasing, installment payment

and other financial solutions to help customers buy these used excavators more

convenient and flexibly.

5. Shipment: Provide flexible shipment which depends on client's request. We have

cooperated with relevant company which can provide many ways of shipping, such

as container, bulk cargo ship, flat rack, etc.

6. Warranty: Provide six months quality assurance for any problems of our products.

and the machine authentic warranty 

7. Technical training and support: Provide customers with operation training and

echnical support services to ensure that customers can operate used excavators

correctly and safely.

8. Designad modification project:according to the demands of customer to provide

the modification to make the machine working better and more efficient.

cases：

1.the modification of boom for rock

2.undercarriage elevating 1500mm height and safety guaranteed

Kunshan Mingjue Engineering Machinery Co., Ltd is one of the largest used

excavator and other construction equipments supplier in China. We provide

complete services and reasonable price for the customer all over the world.

1. Q: How do you ship the machine?
A: it depends on client's request. We have many ways of shipping, such as container,

bulk cargo ship, flat rack and ro-ro for your conference.

2. Q: How can I be sure that the machine is of good condition?
A: We will take the video while the machine is working, which is better for our

customers to check the machines in a dynamic way.

3. Q: How fast can you ship the machine?
A: it needs 5 working days after receiving the deposit.

4. Q: What's your payment ?
A: Our payment is 30% deposit, 40% before loading and 30% after receiving the

copy of B/L

Sale manager

has been engaged with dealing on used construction equipment, especially second

hand excavators for more than 8 years and specialized in negotiation on price and

services for you.