New Hydromechanical Shut-Off Is Available{7418,7403}
Usage:
D379, D398 and D399 Industrial Engines
Description of Change: A new hydromechanical shut-off is used on D379, D398 and D399 Industrial Engines. This shut-off gives protection from damage caused by low oil pressure, high coolant temperature and too high engine rpm. Sometimes, control cable failures in the former mechanical shut-offs prevented engine shutdown. The new hydromechanical shut-off is equipped with an oil pump to give the necessary oil pressure for a rack shut-off and an air inlet shut-off.
Adaptable To: Earlier engines as shown in the chart which follows. See Special Instruction SMHS7434. Information about operation, specifications and troubleshooting is available in the D379, D398 and D399 Service Manual Form No. SEBR0511.
Caterpillar Information System:
1979/10/08 Fast Fuel Delivery Couplings And Fast Oil Change Couplings Are Available For All Caterpillar Equipment{0671,1273,1279,1325}
1979/10/08 Warning: Excessive Heat Can Cause A Tire Explosion{4203}
1979/10/01 New Planet Gears For Power Shift Transmissions And/Or Winches Have No Oil Grooves On the Faces{3176,5165}
1979/10/01 New Aftercooler Core Has Stronger Construction And Corrosion Resistance{1064}
1979/10/01 Tips For SIRS (Service Information Retrieval System) Users{0374}
1979/10/01 Steel Plates Are Now Used To Hold The Element In Position In The Panel-Type Air Cleaner Housing Assembly{1051,1054}
1979/10/01 New Liner Seat Inserts For Spacer Plate Cylinder Blocks Are Made Of Stainless Steel{1217,1201,0663}
1979/09/24 Cranking Speeds Necessary To Start Diesel Engines{0374,1000,1450}
1979/09/24 8S9901 Tool Cart Can Be Adapted To Hold Both The 5P3600 Hydraulic Flow Meter Group And The Tools Used With It{0651}
1979/09/17 6V2042 Alignment Yoke And 6V2043 Alignment Bar Available{0653,3305,4450}
1979/09/17 New Bracket Available For Installation Of Jacket Water Heater{1383}
1979/09/17 Improved Sea Water Pump Now Used{1361,1371}
1979/10/08 Supplement To Special Instruction, Form SEHS6895, "Bench Testing Hydraulic Components" Now Available On Microfiche{0650}
1979/10/15 Engine Oil Viscosity Changed To SAE 10W/30 For Shipment From All U.S. Factories{1318}
1979/10/15 New Camshaft Housing Gasket Has Increased Resistance To High Temperature{1113}
1979/10/22 Use The FT1482 Stop Collar Assembly With The 1P4000 Line Boring Tool Group{0663}
1979/10/22 New Coolant Temperature Regulator Housing And Vent Line Valve Give Better Control Of Engine Cooling; Conversion Kits Available{1380,1355}
1979/10/22 Cold Temperature Starting Procedures For Air Compressor And Drill Engines{0374,1000,1450}
1979/10/22 Size Of Glass Beads Is Important When Used To Clean Engine And Turbocharger Parts{0670,1052,1053,1077,1105,1214}
1979/10/22 New Valve Rotator And New Oil Shield Are Available{1104,1105,1109}
1979/10/22 Improved Seal Used In Raw Water Pump On Marine Engines{1371}
1979/10/22 New Connecting Rod Is Tapered In Piston Pin Area{1218}
1979/10/22 Voltage Regulator Can Cause Variable Ammeter Indications{1410,1401,1405,1406,7467}
1979/10/22 Different Thrust Bearing And Thrust Rings Now Used In Turbochargers{1052,1053}