SUPPORT AS 1240903 - Caterpillar

Engine: Commercial
3500 and 3500B Family AllEngine News SEBD9355, 23 May 2005, "A Procedure for Obtaining Fuel Samples". Disregard this article. Refer to the following article.Consult the Fuel Specialist at Caterpillar Technology and Solutions for information on fuel analysis, on shipping containers, and on shipping.
Telephone 309-578-8796
E-Mail FACTSPrior to obtaining a fuel sample, the following criteria must be met:
The fuel supply tank is below 25 percent of capacity.
The engine has been operating for at least ten minutes. Obtain the sample while the engine is warm.
The hose assembly that is used to collect the sample must be clean.
The sampling bottle must be clean.
The sampling bottle must be non-reactive materials.
The sampling bottle must not be made of materials that contain any trace of sulfur.
The sampling bottle must be approved by Caterpillar. The quantity of the sample that is required will vary with the amount of testing that is requested. The minimum quantity of the sample is 0.5 L (1 pint). The maximum quantity of the sample is 1 L (1 qt).The hose assembly and the connectors that are shown in Illustration 1 can be used to take fuel samples from most 3500 Engines.
Table 1
Parts List    
Item     Qty     Part Number     Description    
1     1     5N-5646     Hose As    
2     1     3J-7352     Connector    
3     2     4S-6399     Connector    
4     1     141-0412     Valve    
Illustration 1 g01172892
Hose assembly for sampling fuel (1) 5N-5646 Hose As (2) 3J-7352 Connector (3) 4S-6399 Connector (4) 141-0412 Valve Sampling Procedure
Obtain a fuel sample from each of the following locations:
Unfiltered Fuel
Filtered fuel
Fuel Return
Illustration 2 g01172943
Location of the fuel sample for an engine that is equipped with canister fuel filter elements (1) Unfiltered fuel (2) Filtered fuel
Illustration 3 g01173023
Location of the fuel sample for an engine that is equipped with spin-on fuel filter elements (1) Unfiltered fuel (2) Filtered fuel
Illustration 4 g01173027
Location of the fuel sample for the fuel return (3) Fuel return
The fuel is under pressure and may spray out when the valve is opened. Personal injury can result. Ensure that you wear eye protection at all times while obtaining a fuel sample.
Do not allow dirt to enter the fuel system. Thoroughly clean the area around a fuel system component that will be disconnected. Fit a suitable cover over disconnected fuel system component.
Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting and repair of the product. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids.Refer to Special Publication, NENG2500, "Caterpillar Dealer Service Tool Catalog" for tools and supplies suitable to collect and contain fluids on Caterpillar products.Dispose of all fluids according to local regulations and mandates.
Use a suitable container to catch any fuel that might spill. Clean up any spilled fuel immediately.
Stop the engine.
Attach the hose assembly to the appropriate port for obtaining a fuel sample.
Use a clean towel to wipe