YDT-35 Operating and Servicing Manual
12 HL066(EN) ISSUE 1, 05/2015
1 Introduction & Specification
1.1 General
The YDT-35 is a simple function testing machine for common rail diesel injectors. It is designed with
the vehicle repair workshop in mind and is aimed at providing a means to make an initial assessment
of an injector’s functional state as a part of the initial vehicle diagnostic process.
The YDT-35 is not designed to enable the detailed assessments necessary to pin-point problems
with injectors at a level that enables components within the injector to be identified for potential repair
or replacement; nor for example is it able to provide delivery measurements for detailed analysis.
In order to be completely sure that an injector is performing exactly as it should according to the
operating specifications that it was designed for, an injector must be sent to a specialist diesel
workshop with the appropriate equipment, knowledge and training, such as an approved Delphi
Diesel Centre.
The YDT-35 is most effectively used to complement the existing capability of a repair workshop
when using other equipment such as ODB diagnostic interface tools and Oscilloscopes. When used
within a workshop’s existing processes to diagnose faults, an injector or set of injectors can be easily
and quickly positively identified as being obviously faulty. This is the YDT-35’s main strength.
The YDT-35 also allows the workshop operative to be able to focus on the most likely cause of the
vehicle problems being reported by customers, and in many cases avoids the unnecessary sending
off of injectors for testing and repair, instead focusing the search in other areas. In these scenarios
faults can be found earlier than they would have been and the vehicle can be fixed and returned to
the customer more quickly. This has the effect of reducing productivity bottlenecks and improves job
throughput for workshops.
The YDT-35 unit consists of a:-
Steel fabricated chassis
Pressure source
Universal injector fixtures
Delivery spray chamber
Digital pressure gauge
2 micron filtration
Safety operating guard
Additional Note: Piezo Injectors.
The YDT-35 is designed to take the operator through a specific path of fixed test steps that start with
electrical testing and end with spray pattern observation. In order to avoid potential critical damage to
the circuit board, the YDT-35 is designed to halt the test process if any Piezo type injector fails the
electrical test. For this reason, it is highly unadvisable to attempt to force the machine to conduct a
spray pattern function test if it is known that a Piezo injector has an electrical fault.
If a YDT-35 unit is returned under warranty and the software data logs show that this has been the
case then the warranty maybe deemed void at that point and the unit maybe returned to the
customer unrepaired.
Any technical intervention requires certified Hartridge training. Contact Hartridge Ltd for details.
To Next Page
Loading...
Need help?
General