1981/08/03 Caterpillar

Indications Of High Oil Temperatures In BrakeSaver Circuit Can Be Caused By Wrong Gauge Connection{1155,1159,7450}

Usage:

3406, 3408 Truck Engines

According to field reports, some trucks equipped with 3406 and 3408 Truck Engines with BrakeSavers have a problem with indications of high oil temperatures in the BrakeSaver circuit. The indication on the BrakeSaver oil temperature gauge increases rapidly to the red range on the gauge (110°C - 230°F) in approximately ten seconds after the BrakeSaver is activated to the maximum position.

When this problem is found on a truck, check the location where the tube from the gauge is connected to the BrakeSaver control valve. The tube must be connected in the location shown in the illustration for accuracy in the indication of oil temperature.

Correct location for connection of oil temperature gauge tube to BrakeSaver control valve.

Caterpillar Information System:

1981/07/13 Washer, Seal Added To Improve Oil Filter Assembly{1306,1318}

1981/07/13 Remove Piston Cooling Tubes Before Removal Of Pistons And Connecting Rods{1214,1218,1201,1225,1307}

1981/07/13 Coolant Conditioner Elements And Their Capacities{1350}

1981/07/13 Top Rings For Pistons Have Two Designs{1215,1214}

1981/07/13 Use 6V4805 Valve Seat Extractor Group To Remove Valve Seat Inserts{0621}

1981/07/13 Add New Information To Two Current Guidelines For Reusable Parts{0374}

1981/07/06 Use 6V4172 Injector Sleeve When You Clean Fuel Injectors{0622,1250}

1981/07/06 6V4133 Wedge Bracket Makes Cylinder Liner Removal Easier{0621}

1981/07/06 Use 6V4068 Tool Group To Machine Camshaft Thrust Face{0663,1253}

1981/07/06 Stronger Fitting Used With Sending Unit For Oil Pressure Gauge{7457,7451,3310,3314}

1981/07/06 Single Connector Prevents Leakage From Fuel Filter Lines Groups{1274,1262}

1981/07/06 New Retainers Used To Hold Oil Pump Output Tube In Manifold{3314}

1981/08/03 Delay Expected In Replacement Of Canceled Service Tools{0651}

1981/08/03 New Information System For Engine Gasket Kits{7555}

1981/08/03 FT1633 And FT1634 Return Cap Assemblies Permit Easier Installation Of Flow Meter Tools{0651,5050}

1981/08/10 Voltage Converter Assembly Now Available{1400,1410,1561}

1981/08/10 Certification Film Necessary On Engines Adjusted For High Altitude Operation{7557,1251,1257,1264}

1981/08/10 New Water Temperature Regulator Improves Temperature Control{1355,1354}

1981/08/10 Use Correct Parts In Oil Pressure Relief Valve{1315,1304}

1981/08/10 Explanation Of Differences In Timing Advance Information{0374,1250}

1981/08/10 Different O-Ring Seals Used In Exhaust Gas Recirculation Actuator Group{1080}

1981/08/10 New Spacers Used With Larger Valve Springs{1108,1101}

1981/08/17 Standard Interval For Oil Changes Now 20,125 Kilometers (12,500 Miles) Or 250 Service Hours{1318}

1981/08/17 New Spanner Wrenches Needed To Install Bearings On Marine Transmission Shafts{0622,3300}