1980/03/24 Caterpillar

8S2252 Carbon Seal Tool Can Be Adapted For Use On 8N7001 Fuel Nozzle Assembly{0611,1254}

Usage:

The diameter of the tip used in the 8N7001 Fuel Nozzle made by Caterpillar is larger than that of the tips used in Pencil-Type fuel nozzles made for Caterpillar.

The 8S2252 Carbon Seal Tool can be used for installation of the carbon seals (see Illustration 1) on the 8N7001 Fuel Nozzle if a modification is made to the tool. After modification, the tool will fit around the larger tip.

The 8S2252 Carbon Seal Tool must be drilled out to .332" (8.5 mm) to a depth of .060" (1.5 mm), as shown in Illustration 2.

The 8S2252 Carbon Seal Tool can be used on both Pencil-Type fuel nozzles and 8N7001 Fuel Nozzles after this modification is made.

Illustration 1. Location of carbon seals in fuel nozzles.

Illustration 2. Dimensions for modification of 8S2252 Carbon Seal Tool.

Caterpillar Information System:

1980/03/24 New Top Piston Ring Has Plasma-Coated Face{1215}

1980/03/24 Crankshaft Rear Seal And Wear Sleeve Are Now Serviced As A Group Instead Of Separate Parts{1161}

1980/03/24 Inspect Regulator Cover Assembly When Overcooling Is A Problem{1350,1380}

1980/03/03 Fuel Heaters Are Now Available For Field Installation{1296}

1980/03/03 Connecting Rod Changes And Replacement Information{1218}

1980/03/03 Spacer Plate Block Group Used For Parts Service Of Block Group With Counterbore Design{1101,1201}

1980/02/25 Identification Of Fuel Injection Lines And Nozzle Bodies For Different Combustion Systems{1252,1254}

1980/02/25 Drawings Available For Six Tools Used During Repairs Of Damaged Pin Bores In Two-Piece Booms{6501,0665}

1980/02/25 Plunger Movement Must Be Adjusted When New Rack Shut-Off Solenoid Is Installed{1259}

1980/02/25 Stronger Braces Used Between Air Cleaner And Engine{1051}

1980/02/25 Revision Of Special Instruction Form No. SMHS7267, "Use Of 5P8709 Tool Group For Alignment Of Piston Cooling Jets" Has Important Changes{1307}

1980/02/25 How To Check Operation Of Hydramechanical Shutoffs On D379B, D398B, D399 Engines{7418}

1980/03/24 Different Water Temperature Regulators Now Used To Prevent Overheating{1355}

1980/03/24 Visual Inspection Of Main And Connecting Rod Bearings{1203,1219,1230}

1980/03/24 New Fuel Injection Lines And Clamps Prevent Stresses And Contact Which Can Cause Leakage{1252}

1980/03/24 An Increase In Engine RPM Will Extend Vanes In Hydraulic Oil Pump To Start Pump Output{5055,5068}

1980/03/24 New Plugs And Rubber Stoppers For Machines With Sealed And Lubricated Track{4169,4170,4175,0622}

1980/03/24 New Control Valve Body{1155,1159}

1980/03/24 Different Vibration Damper Now Used{1205}

1980/03/31 Use The 6V200 Hydraulic Wrench To Get Correct Torque Applications On Fasteners In Difficult Access Areas{0612,0623}

1980/03/31 6V2023 Flow Check Adapter Group Is Available{0651,0654}

1980/03/31 Replacement Pinion And Output Gear Available For Service Of Torque Multiplier{0614}

1980/03/31 Remanufactured Short Blocks Are Available For Repairs Of Early 3406 Engines{1201,1101,1102}

1980/03/31 Caution: Outboard Bearing Must Be Removed From Extended Shaft Of Front Power Takeoff Before The Engine Is Moved{3055}