PLUG AS 2458021 - Caterpillar

Electric Shut-Off Groups With Manual Override
Electrical shut-off groups, 12 and 24 volt, with manual override are available on 3208 Marine Engines with energize-to-shut-off fuel solenoid as an attachment. The 7C-0948 Electrical Shut-Off (24 volt) and 7C-0949 Electrical Shut-Off(12 volt) are direct replacements for the earlier shut-off groups.The manual override feature enables the engine to be shut off in the event of an electrical or solenoid malfunction. The top of the plungers in the new solenoids has internal 1/4-28 threads (2), Illustration 138. A threaded rod can be installed in the top of the plunger through a hole in the rubber boot. The threaded rod can be pushed down to shut off the fuel and stop the engine.Lines and Nozzles
Illustration 139 g06339371
Typical location of fuel injection line clamps.
(1) Typical fuel injection line clamp with rubber damper.
(2) Typical metal-to-metal fuel injection line clamp.Fuel Injection Line Clamps
After repairs, some fuel injection line clamps are being incorrectly tightened. These clamps, fasten two, or more fuel injection lines together to help reduce vibration. Refer to Illustration 138. It is important to use the correct tightening torque to prevent distortion of the clamps and to make sure that the clamps stay tight. Engines with metal-to-metal clamps should be tightened to 2.3 N m (20.35672 lb in).
Over-tightening a metal-to-metal clamp can result in distorting the clamp and decreasing the clamping ability. Do not reuse distorted metal-to-metal clamps.
Note: The 6V-4980 Torque Screwdriver Tool is available for tightening small fasteners up to 4 N m (2.95024 lb ft).Some early model engines used clamps with rubber dampers that should be tightened to 10 N m (7.37560 lb ft).Bleed Screw Washer (Seal)
Illustration 140 g06339374
Location of washer (1) under the nozzle bleed screw (3208 Engine shown).
(1) Replace washer (seal) under bleed screw.Anytime the bleed screw on the side of 7000 Series Fuel Nozzles is removed or loosened, it is important to replace the washer (seal) under this screw with a new washer. Refer to Illustration 140. There have been several documented cases where the bleed screw leaked because its washer was not replaced after the screw was removed for service workRefer to the applicable parts book for the correct washer part number. Tighten the bleed screw to 1.6 0.4 N m (1.18010 0.29502 lb ft)."Special instruction"SEHS7292, "Use of 5P-4150 Nozzle Testing Group and 8S-2245 Cleaning Kit" also states that a new washer (seal) should be used. Make a special note in this Special Instruction and in the other publications or wall charts.Compression Seal Washer (Gas Seal)
Table 7
Compression Seal Washer Identification
Engine Fuel Nozzle Part Number Washer Part Number Material Thickness
3208 4W-7016 7W-4485 Copper 1.27 mm (0.05000 inch)
3208 7W-7024 7W-4485 Copper 1.27 mm (0.05000 inch) The Caterpillar 7000 Series Fuel Injection Nozzle is used on many direct injection 3200 Engines. This nozzle is identified as the 7000 Series because the last four digits of the part number begin with the number 7.Most of the compression seal washers used on these nozzles have now