Air Vent Line Improves Cooling System Performance{1395,1350}
Usage:
3176 Truck Engines
When the cooling system for 3176 Truck Engines is initially filled, air can get trapped in the system. This air should be bled off for best cooling system performance. To remove this air a 6.35 mm (.25") air vent line is recommended. The vent line should be installed between the top tank of the radiator and coolant outlet manifold, upstream of the water temperature regulator. See the illustration.
Location to install air vent line in outlet manifold.
Caterpillar Information System:
1989/06/19 New Pistons Used With Two Keystone Compression Rings{1156,1205,1214,1215}
1989/06/19 New Seal Used In Auxiliary Water Pump Groups{1361}
1989/06/19 Special Instruction, "Battery Charging Rate And Time Tables," Available On Oil Resistant Paper{0374,1401}
1989/06/19 Identification Of Asbestos-Free Material{0353,0112,0648}
1989/05/29 "CXP Fluids" Are Now "Cat Fluids" {0645}
1989/05/29 Maintenance Inspection Of Emergency Shutdown Systems Required Every 1000 Hours {7400}
1989/05/29 New Extension Assembly Used In Gas Engine Ignition Groups {1558}
1989/05/29 New Upper and Lower Seals For Folded Core Radiators In Cold Temperature Applications {1353}
1989/05/22 New Clamps With Grommets Used In Fuel Lines, Turbocharger Oil Supply Lines, And Turbocharger Water Supply Lines {1274,1307,1380}
1989/05/22 Check Valve Added To Fuel Injection Lines {1274}
1989/05/22 New Front Crankshaft Seal Requires New Installer Tool {1160,1202,0704}
1989/05/22 Do Not Prefill Secondary Fuel Filter {1261,1290}
1989/06/26 Change Routing Of Heater Return Hose To Improve Heater Efficiency{7304,1361}
1989/06/26 Damper Groups Improved To Help Prevent Leaks Of Viscous Fluids{1205}
1989/06/26 New Connector With An Orifice Added To Fuel Injection Lines Groups To Help Prevent Cavitation{1274}
1989/07/03 Air Conditioning Service Tooling{0757,0786,7320}
1989/07/03 Use Same Torque For All Sizes Of Threaded Crown Hydraulic Cylinders{5100,7562}
1989/07/10 New Viton Rubber Seals Used{1302,1307,1312,1306,1317,1200}
1989/07/10 New, Larger Vibration Damper Improves Wear Life{1205}
1989/07/17 PEEC Training And Diagnostic Training Program Available{0314,0372,1705}
1989/07/24 New Publication Available, "Metal Spray Guide"{0374}
1989/07/24 New Publication Available, "Ultrasonics Guide"{0374}
1989/07/24 Check The Radiator Fan Spider Assembly When Doing Yearly General Maintenance{1356}
1989/07/24 Subscription Service Available For ECAP And DDT Service Program Modules{0782,1705}