SEAL-O-RING 0951682 - Caterpillar

The 6V9450 Engine Pressure Group replaces the former 6V3150 Engine Pressure Group and 4S6553 Engine Evaluation Test Group. The contents of the 6V3150 Engine Pressure Group are still serviced. The contents of the 4S6553 Engine Evaluation Test Group are no longer serviced.The 6V9450 Engine Pressure Group can be used to check the performance of diesel and natural gas engines, and to make operating adjustments to natural gas engines. Refer to the Service Manual of the engine being serviced or to the Fuel Setting and Related Information microfiche library for operating specifications.The gauges in the 6V9450 Engine Pressure Group are gauge pressure instruments that indicate pressure relative to ambient atmospheric pressure. This type of instrument will read ZERO when the pressure port is open to the atmosphere.Engine boost or manifold pressure is the difference between atmospheric pressure and the pressure in the engine intake manifold. The new 8T0840 Compound Pressure Gauge can read boost directly in kPa and inches of Hg. The new 8T0839 Differential Pressure Gauge reads directly in kPa and inches of H2O. All other gauges in the group read directly in kPa and psi. The chart in the lid of the case can be used to convert kPa or psi to inches of mercury as shown in the Fuel Setting and Related Information microfiche. No allowance for atmospheric pressure is needed in the conversion. The metric portion of the new pressure gauges is shaded in yellow. List Of Components
1. 8T0841 Case2. 8T0839 Differential Pressure Gauge3. 8T0846 Pressure Gauge4. 8T0840 Compound Pressure Gauge5. 8T0848 Pressure Gauge6. 8T0838 Bulkhead Fitting (eight) *7. 8T0821 Tubing, 16 m (52.5 ft) **8. 8T0837 Straight Connector (six) *9. 8T0836 Elbow Fitting (six) *10. 8T0835 Union (two) *11. Optional 8T3153 Foam Block (case lid) ***12. 6V6132 Cable Tie (five)a)13. 6V6045 Accessories Case & SEES5575 Accessories Label14. 6V6115 Packing Set Base15. SEES5677 Conversion Chart b)16. SEES5667 Title Decal (on outside of case lid)17. Optional 8T0452 Water Manometer1/8*The 8T0835 Union, 8T0836 Elbow Fitting, 8T0837 Straight Connector and 8T0838 Bulkhead Fitting are reusable " tube fittings for applications in the pressure range of vacuum to 1720 kPa (250 psi) and in temperatures from -12°C to 200°C (10°F to 400°F).**The 8T0821 tubing is a coil of 16 m (52.5 ft) of clear nylon tubing which allows the user to see the presence of any fluid before and during use.***The optional 8T3117 Foam Block can be placed into the lid of 8T0841 Case to hold the optional 8T0452 Water Manometer in the case with 6V9450 Engine Pressure Group.a)The 6V6132 Cable Tie can be used to tie tubing to the engine so the tubing does not contact hot surfaces. The ties are reusable. To loosen a tie after use, push back on the tang and pull out the strap.2222b)FORM SEES5677 Conversion Chart uses the SI unit kPa as its base unit and has been rounded to the nearest practical measure for fiel use. It allows conversion from kPa to psi, inHg, mmHg, cmHg, inHO, ftHO, cmHO, atm, bar, and