How to maintain excavator
Any excavator is an expensive and valuable piece of equipment that needs careful care.An
on-site outage means a loss of money.Downtime can be avoided by regular maintenance,
and spending time and money on maintenance will help save money in the future.A routine
maintenance routine can help avoid many problems that are time consuming and costly to fix.
Here are some Suggestions:
Check engine and hydraulic oil
These should be checked daily and added as
needed.All machines are slightly different, so
check your excavator manual for how often
the oil needs to be changed.Contaminated
oil can cause the hydraulic system to fail.
Use the right type of oil
This is not a place to try and save, and using low quality oil can cause a lot of problems.
High grade oils are specially formulated to prevent thermal and oxidative breakdown,
as well as to improve soot related viscosity control and wear protection.Hydraulic systems
are designed to exact tolerances, so the wrong oil or any other type of contamination
often results in hydraulic failures.Cheaper oils often contain additives that will break when
using a high load cycle.This is especially true for high-load boom operations, as the correct
type and viscosity of the hydraulic oil is fundamental, as corrosion and wear
resistant additives degrade at high temperatures.Conventional oil sample procedures
are recommended and will show any contaminants.
Check water and fuel separator
Most modern excavators have a fuel filter, which has a water separator to separate
the water from the fuel.These filters need to be checked daily and drained regularly.
Just as the oil should be the correct type and of high quality, so should the fuel.
For larger job sites it is common for a fuel technician to be contracted, who
is responsible for delivering the correct fuel and ensuring cleanliness of the fuel
and its delivery. A fuel technician will also make sure that the fuel contains the
appropriate additives that prevent the growth of algae and other organisms. If
you have hired a compact excavator for a smaller job, be sure to seek advice
on the type of fuel and any additives needed. It is also important to remember
to check the fuel tank vent, this can easily become clogged when working in
dusty conditions, leading to over exertion on the fuel pump when delivering fuel.
Inspect the cooling system on a regular basis
The insulation and heat shield of the radiator in the engine room should be
placed in the correct position.The heat exchanger must be kept clean.A coolant
or oil leak can lead to a buildup of dust and debris, which slows air flow and, in
turn, ACTS as an insulator to reduce heat exchange.The coolant must also be
replaced as recommended by the manufacturer, as the coolant additive may stop
working over time, leading to overheating and possible engine failure.
Well lubricated pivot points
All accessories must be lubricated regularly, using high quality grease.This should
include boom, bucket, bucket, all pins and liners.Adequate lubrication is the key to
prolong the service life of equipment, however, excessive lubrication will also cause
environmental hazards and other problems.The accumulation of grease and oil on
the machine can also cause a fire, not to mention getting dirty.
Checking the bucket and attachments
The bucket should be inspected on a daily basis during use, for cracks and wear. If the
bucket is being used for heavy duty cutting work, the teeth will wear quickly. It is advisable
to have a fresh set of teeth and keepers available. Other attachments should also be
inspected for cracks and wear.
Track adjustment/track tension
If excavators are used in large quantities, this should be inspected daily.Too tight tracks can
lead to premature wear and tear, and too loose tracks can lead to poor handling and eventually
stall.A properly tuned track will maximize life and minimize wear on the track and its components.
Service the gearbox
Gearboxes require regular oil changes and maintenance, this is an area that is sometimes overlooked.
Check for leaks
All leaks must be corrected, to check for leaks monitor fluid levels, inspect the cooling system,
the hydraulic system, the swing drive. If you suspect a leak anywhere, it must be immediately corrected.
General cleaning and maintenance
Excavator should be cleaned regularly, and external cleaning can be steam cleaning or
The cabin should also be cleaned regularly.
Safety information must be visible at all times and cannot be obscured by dust and debris.
Steps and handles must be checked for safety to ensure they do not loosen or break.
Air recirculation filter elements must be cleaned regularly.If full of dust can shorten the life
of air conditioning or cabin heaters, resulting in performance degradation.
We suggest you walk around and check your machine every day.Manufacturers and
local dealers can provide training and necessary information on how to maintain your
excavator as all models are slightly different from their own specifications.Some excavators
have electronic screens that display maintenance alerts and programs that alert them to
any potential problems, which help operators quickly identify and fix problems.Spending
time on maintenance will help save money in the long run.