CONNECTOR 8T1779 - Caterpillar

Introduction
This Special Instruction contains the procedure for use of the 8T0910 Fuel Sulfur Analyzer Group. Maintenance and testing procedures are provided to assure correct performance of the fuel sulfur analyzer. During the operation of the fuel sulfur analyzer, a measured amount of diesel fuel is burned in a one liter chamber that is pressurized with oxygen. Any sulfur in the diesel fuel is converted to sulfur dioxide gas (SO2). One hundred milliliters of the resulting gas/oxygen mixture in the tank, is then drawn through a syringe.To determine the amount of sulfur in the fuel, a sulfur dioxide detector tube is used in this procedure. When sulfur dioxide (SO2) gas is drawn through the detector tube, it will cause a stain (change of color) through the center of the detector tube. The length of this stain, and the procedure given in the topic entitled Testing for Sulfur in Diesel Fuel in this publication, are used to determine the percent of sulfur in the fuel. Under controlled conditions, accurate and repeatable results can be obtained with this fuel sulfur analyzer group. Any change from this procedure or careless operation, however, can result in incorrect readings.8T0910 Fuel Sulfur Analyzer Group Components
Contents of the 8T0910 Fuel Sulfur Analyzer Group are as follows: (1) 6V9449 Case (NEEG2145 Decal). (2) 8T5175 Timer. (3) 8T5166 Gauge. (4) SEHS8545 Special Instruction. (5) 8T5176 Switch (Circuit Breaker). (6) 8T5167 Igniter Assembly. (7) 8T5172 Thermometer. (8) 6V6045 Case (NEEG2061 Decal). (9) 8T5178 Sulfur Analyzing Maintenance Kit. (10) *8T5177 Sulfur Dioxide Gas Detector Tubes (20-300 PPM) [one box]. (11) **8T5171 Gas Sampling Syringe (100 ML). (12) 8T5174 Syringe (50 microliter). (13) 8T5170 Sampling Paper.Located under the front panel, at the approximate locations indicated, are the items that follow: (A) 8T5168 Relief Valve. (B) 8T5169 Battery (two). (C) 8T5173 Battery Charger.These tubes have a shelf life of approximately one year from date of manufacture. Because of this, only one box of tubes is included with each fuel sulfur analyzer group. Additional detector tubes can be obtained by ordering the Caterpillar part number from the Caterpillar Parts Department, or, by ordering from Matheson. A list of worldwide Matheson Sales Offices is given at the back of this instruction. *8T5177 Sulfur Dioxide Gas Detector Tubes (20-300 PPM) [Matheson 8014-103 SC]: Before doing a sulfur dioxide gas test, it will be necessary to remove flow control orifice (14), located behind inlet nipple (15). Store orifice (14) in the maintenance kit, because it will be needed to perform a "Check For Correct Test Flow-Rate" as shown in this instruction.Additional items needed that are not part of the 8T0910 Fuel Sulfur Analyzer Group are as follows:* One cylinder of extra dry oxygen, 99.6% minimum purity; welding oxygen is permissible if it meets these requirements.* Two-stage oxygen regulator (Matheson Model No. 3322) or equivalent. (18) 8T5179, 1% Sulfur in Diesel Fuel Sample: This is a mixture of No. 2, 35 API, diesel fuel containing 1% sulfur. It is required to check the calibration of the sulfur