RING-SEAL 6Y6370 - Caterpillar

Remove & Install Fuel Injection Nozzles & Adapters
Start By:a. remove rocker shaft assembly and push rods Fluid Spillage ContainmentCare must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting and repair of the machine. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids. Refer to "Tools And Shop Products Guide", NENG2500 for tools and supplies suitable to collect and contain fluids in Caterpillar machines. Dispose fluids according to local regulations and mandates. 1. Use Tool (A) to disconnect fuel line (1) at each end. Remove the fuel line from the engine. 2. Use Tool (B), and remove retainer (2) from the adapter.3. Remove the fuel injection nozzles with Tool (C) as follows:a. Install the 6V-6983 Adapterand the 8T-3199 Screwinto nozzle assembly (3).b. Install the 8T-3198 Tubeover the 8T-3199 Screw.c. Use the 1B-4206 Nuton the 8T-3199 Screw.d. Use the 1B-4206 Nuton the 8T-3199 Screwto pull the fuel injection nozzle from the adapter.4. Remove compression seal (4) and carbon dam seal (8) from fuel injection nozzle (3).5. Use Tool (D), and remove adapter (6) from the cylinder head.6. Remove gasket (7) and seal (5) from adapter (6). The following steps are for installation of the fuel injection nozzles and adapters.7. Use Tool (E) to clean the bore in adapter (6). Use an open end wrench or tap driver to turn Tool (E).8. Inspect seal (5) fro damage or wear. Replace the seal if necessary.9. Put washer (7) and seal (5) in position on adapter (6).10. Put liquid soap in the bores of the cylinder head and on seals (5) in the adapters.11. Put 5P-3931 Anti-Seize Compoundon the threads of adapter (6), and install the adapter in the cylinder head assembly.12. Use Tool (D), and tighten the adapter to a torque of 205 14 N m (150 10 lb ft).
Make sure the correct compression seal washer (4) is used when the nozzle assembly is installed in the adapter. Only copper washers are to be used with the adapter.
13. Install compression seal washer (4), and use Tool (F) to install carbon dam seal (8) on the fuel injection nozzle.14. Put fuel injection nozzle (3) in position in the adapter, and install retainer (2).15. Use Tool (B) to tighten retainer (2) to a torque of 48 7 N m (35 5 lb ft).16. Install fuel line (1). Tighten the nuts on the fuel line with Tool (A) to a torque of 40 7 N m (30 5 lb ft).End By:a. install rocker shaft assembly and push rods