New Top Piston Ring Has Plasma-Coated Face{1215}
Usage:
D353 Industrial and Marine Engines;
D9H and DD9H Tractors;
594 Pipelayers
Description of Change: A new top ring is used on pistons in the above models. The new piston ring is made of a harder material and has a plasma-coated face. This gives the new ring more resistance to wear and corrosion than the former chromium-plated ring.
Adaptable As: The new 1N3592 Piston Ring is a direct replacement for the former 6N6639 Piston Ring which is canceled.
Caterpillar Information System:
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}
1980/02/11 Use The Correct Water Temperature Contactor{1350,1100}
1980/03/24 8S2252 Carbon Seal Tool Can Be Adapted For Use On 8N7001 Fuel Nozzle Assembly{0611,1254}
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}