Cartridge HX40 4046100 4039140 Cummins QSL

I have oil leaking from hoses and joints on my turbo. Is it due for service?
One of the most common causes of turbo 'failure' is an oil leak from the turbo and/or air pipe work between turbocharger and engine.
Note that most engines vent from the rocker cover into the air intake line, which runs between the air cleaner and turbo.
Normally this complaint is not caused by the turbo but is caused by a blocked air cleaner or heavy breathing from the crankcase. Remove the intake line to the turbo. If there is oil inside the hose then the oil is coming from the breather.
If this type of leakage occurs and the engine is fitted with a charge air cooler the oil will block the air side of cooler and compound the problem. This must be removed and cleaned after the cause of lube oil contamination is corrected.

What is your sample policy?
We can supply the sample if we have ready parts in stock, but the customers have to pay the sample cost and the courier cost.