As the core part of an excavator, if the engine breaks down, it will directly disrupt the normal operation of other heavy equipment parts. Generally speaking, the failure of Cat engine parts is related to the construction environment, manipulator operation habits, fuel quality, daily maintenance, and other factors. Definitely, always take proper measures to work your engine construction parts failures out, will be beneficial to raise productivity and extend the equipment life.

Common Faults of Cat Heavy Equipment Engine Parts And Solution

1. The Output Power of The Engine Is Insufficient

Causes of insufficient engine output power.

  • Electrical control system failure.
  • Using poor quality fuel oil.
  • The air filter is blocked, resulting in insufficient air input.
  • Water tank overheating.
  • Fuel pump failure.

When the engine output power is insufficient, try to adopt these measures to solve it.

  • Check and repair the electrical control system.
  • After thoroughly cleaning the diesel tank, replace it with high-quality fuel.
  • Clean the air inlet pipe and replace the air filter.
  • Clean water tank and cooling system.
  • Correct the fuel pump and replace it with a new one.

For supercharged diesel engines, in addition to the above reasons will reduce the power, if the supercharger bearing wear, press, and turbine inlet pipe are blocked by dirt or air leakage, can also reduce the power of the diesel engine. When the supercharger appears the above situation, should overhaul or replace the bearing separately, clean up the inlet pipe, shell, wipe the impeller, tighten the joint nut and clamp.

2. Unstable Engine Speed

If the dashboard suddenly shows no speed or high speed, it is important to consider whether the relevant engine construction parts have failed.

The reasons for uneven engine speed:

  • Throttle control system failure.
  • Engine control system fault.
  • Stepper motor gets damaged.

For uneven engine speed, the following methods may be helpful.

  • Adjust or replace the throttle control system.
  • Disassemble to repair the engine control system or replace it with new parts.
  • Mend or replace the stepper motor.

3. The Engine Exhaust Is Black Or Dark Grey

Cause for dark smoking of diesel engines.

  • Injection of inferior fuel oil.
  • Fuel pump failure.
  • Insufficient combustor compression pressure.
  • Insufficient air input due to a clogged air filter.
  • Take these measures to solve black engine smoke.

Clean the tank thoroughly and replace it with high-quality fuel.

  • Adjust the fuel pump.
  • Disassemble and repair the combustion chamber, replace new ones if necessary.
  • Clean the air inlet pipe and replace it with a new air cleaner.

The primary thing to know is that the essence of engine black smoke is inadequate fuel combustion. This is, this problem is tricky to deal with, but it does not mean that there is no way to do it. Carefully observe and find out the essential cause of the construction parts failure, the failure will be solved naturally!

4. Excessive Oil Consumption

The new excavator always consumes more oil than the old one. Because the cylinder surface oil storage groove will store and consume a little bit more oil. With the operation of the machine run-in, pattern groove point gradually smooth, oil consumption will gradually reduce as well.

The main causes of high oil consumption.

  • Too much oil.
  • Low oil viscosity.
  • Oil leakage.
  • Wear of Piston Ring.

What to do when the oil consumption is too high?

  • Let off the excess oil.
  • Change the oil with proper viscosity.
  • Tighten the parts where the oil leaks.
  • Repair or replace piston rings.

5. Engine Overheating

Engine overheating, specifically, refers to the excessive temperature of the cooling water in the engine. The decline of heat dissipation capacity and the excessive heat load are the direct causes of this problem.

The main causes of engine overheating.

  • Fan belt relaxation.
  • Coolant shortage.
  • Pump failure.
  • Coolant temperature sensor fault.

When the engine overheats, the following methods are recommended.

  • Adjustable fan belt.
  • Supplementary coolant.
  • Repair or replace pumps.
  • Replace coolant temperature sensors.

construction equipment parts

How to Prolong The Life of Cat Engine Parts

In general, according to the different life cycles, Caterpillar divides its engine parts into 1-3 class. Timely maintenance of class 1 or 2 components will eventually extend the life cycle of the more expensive level 3 spare parts.

  • Class 1 parts mainly include bearing bush, piston ring, gasket, valve guide, etc. Obviously, the features of these parts are quick-wearing, low reuse rate. In most cases, the fastest way to solve the problem of level 1 accessories is to replace them with new ones.
  • Class 2 parts mainly include pistons, cylinder liners, valve mechanisms, oil pumps, etc. In comparison, these accessories wear out slowly and are reusable.
  • Class 2 parts mainly include the water pump, thermostat, fuel pump, fuel injector, etc., which have good wear resistance and long service life. In other words, their durability is the best.

In summary, excavator engine problems must be solved in time, otherwise, it may cause mechanical safety problems and more expensive expenses. If you have any idea about this topic, please leave a message below.

For more information on excavator parts, read the following guide: These 5 Error Operations May Damage The Parts of Volvo Construction Equipment Excavator