Service
Information
SI 938_2519
The specifications provided in this Service Information sheet are the results of careful analysis. Any application-related specifications shall be viewed as recommen-
dations based on past experiences. Due to the wide variety of applications and work methods, we are unable to provide binding specifications. Therefore, there
exists no contractual legal relationship, nor will secondary obligations arise from any purchase contracts. Only the most recent version of the Service Information
sheet retains its validity.
TUNAP GmbH & Co. KG | D-82515 Wolfratshausen | Tel. 08171 / 16 00 – 0 | [email protected] | www.tunap.com
Important notices
Use 938 Injector Intensive Cleaner "Diesel" exclusively for cleaning diesel injection systems.
Cleaning is performed using the TUNAP Injecto-Clean unit without disassembling the injectors.
Before separating the fuel lines, make sure that they are not pressurized.
Observe all manufacturer regulations before performing work on the diesel fuel system.
Always wear appropriate protective clothing, protective gloves, and protective glasses/eye protection while working.
The engine must be at operating temperature before cleaning.
Perform a test drive after cleaning is complete. Read out/reset the error memory.
After cleaning, add 984 Injector Direct Protection continuous for additional prevention.
Connections diagram
Application example
1.
Separate the engines fuel supply (delivery) near the high-pressure pump and after the merging of the return lines. Connect the
vehicle's delivery and return lines to each other.
High-
pressure
pump
Low-pressure
connection
Engine
Fuel return to tank
Fuel delivery from
tank
Tank
High-pressure outlet to
the injectors
Separate at suitable connection point
High-
pres-
sure
pump
Engine
Tank
