4TNV88C Diesel Engine Assembly For Excavator PC56 PC40-7 Electric
Specification
| Car name: Complete Engine |
| Model Number: 4TNV88C |
| Cylinder stroke: 90 |
| Application: Excavator |
| Cylinder diameter: 88 |
| valve: 16 valve |
| Cooling: Water cooling |
| Output: 26.7kw |
| Injection: Electric |
| Cylinders of number: 4 |
Description
Diesel Engines Parts Known to Have Problems
The most frequently occurring diesel problems concern the following
key engine parts, many of which (although not all) are in
conjunction with the above issues:
Pistons
Pistons are an important part of the engine and can fail in several
ways. These include:
1. The timing belt snapping.
2. Piston rings becoming worn out.
3. Piston slap (a noisy piston).
4. The piston becoming burnt (usually by dirty fuel injectors).
5. The piston becoming cracked (caused by frequent use of poor
quality fuel).
Gaskets
The most frequent cause of failure in gaskets is overheating via
coolant leaks. However, in general, diesel engines are more prone
to gasket failure than other engine types, largely because diesel
gaskets regularly face higher combustion pressures. Repair of
diesel gaskets is made all the more complicated (although not
impossible) by the intricate nature of diesel engines.
Cylinder heads
Problems related to cylinder heads are usually categorised by loss
of compression. Cracks in cylinder heads which lead to leakages are
also a common issue, as are internal casting defects.
Bearings
Bearings face a lot of stress due to the daily friction they
experience- insufficient lubrication can therefore lead to bearing
(and consequently engine) failure. Other causes of bearing damage
include an improper selection of bearing material for the engine
type at hand.
The most common problems with diesel engines will incorporate a
mixture of the above issues and affected diesel engine parts.
However, it must be emphasised that the above offers a simple
overview only, and additional diesel problems certainly exist. Each
issue is multi-faceted, with parts affected and displayed in
numerous ways.
Solutions to Common Diesel Engine Problems
All diesel engines are different, and as such when it comes to
problems with diesel engines there’s no ‘one size fits all’
solution for any diesel engine problem, whether common or uncommon.
It must also be noted that it’s imperative to determine the cause
of the diesel problem and address this issue before simply
replacing damaged parts and re-assembling the engine.
