1981/12/14 Caterpillar

Make Sure Coolant Conditioner Elements Are Changed At Correct Intervals{1350}

Usage:

All Caterpillar Engines

Reference: Service Magazine, July 13, 1981, Page 5. This article gives a complete list of precharge elements, maintenance elements and the cooling system capacities these elements can be used with.

Reports show that the precharge elements and maintenance elements have not always been changed at the correct service interval. It is important that these elements be changed at the service intervals shown in the Operation and Maintenance or the Maintenance Guides for your engines.

If these elements are not changed at the correct intervals, it is possible that some internal surfaces will not have enough protection from corrosion.

The serviceman must remember that the effect of the conditioner decreases with the increase in service hours. Also, the addition of water to the cooling system will lower the percentage of concentration of conditioner (inhibitor) in the system. For these reasons, the maintenance elements must be changed at the correct service interval to keep the desired percentage of corrosion protection in the cooling system. Make up coolant must always be treated with conditioner as shown in "Know Your Cooling System" Form SEBD0518-01.

Caterpillar Information System:

1981/12/14 New Valve Seat Used In Shift Pressure Valve Group{3152,3167}

1981/12/07 New Inlet Lines Used In Radiator Group{1353,1380}

1981/12/07 New Air Cleaner Group Has Six Clamps For Improved Seal{1051}

1981/12/07 6V4175 Socket Available For Worn Track Bolts{0612,4179}

1981/12/07 New Core Assembly Used In Transmission Oil Cooler Group{1375}

1981/12/07 Increased Lubrication For Transmission Planetary Gears{3154,3176}

1981/11/30 New Duo-Cone Seals Use Seal Rings Made Of Steel Instead Of Cast Iron{7555}

1981/11/23 Shorter Wiper Blade Prevents Contact With Windshield Seal{7305}

1981/11/23 Lateral Stabilizer Bracket Available As A Replacement Part{7051,7203}

1981/11/23 New Regulator And Field Coil Assemblies Used{1410,1405}

1981/11/23 Use Of Metric Fasteners{7553,0683,1000}

1981/11/23 New 6V4190 Auto Programmer Group And 6V4865 Auto Programmer Connector Used With 6V2100 Multitach{0651}

1981/12/14 6V4111 Adapters Available To Pull Spoke-Type Sprockets{4164,0623}

1981/12/14 New Flywheel Housing Gasket Used{1201,1157}

1981/12/14 New Oil Level Gauge Used To Prevent Vibration{1300,1318,7450}

1981/12/14 How To Remove The 7L4511 Sleeve Assembly From Aftercoolers{0620,1063}

1981/12/14 New Springs For Timing Advance Used In Governor And Fuel Pump Drive Group{1272,1288}

1981/12/14 New Cylinder Liners And O-Ring Seals Give Longer Seal Life{1216,1201,1213,1227}

1981/12/21 Shorter Bolt Gives Clearance For Wiper Motor Linkage{7305,7300}

1981/12/21 Use Of A Flex-Hone For Cylinder Liner Reconditioning{0664,0674,1216}

1982/01/11 Check 14 Test Points In Less Than 5 Minutes With The 6V2150 Starting/Charging Analyzer Group{0651,1518,1406}

1982/01/11 Improved Head Gasket Has Larger Fire Ring To Decrease Fretting{1101,1201}

1982/01/11 Procedure Reduces Possibility Of Spraying Hot Hydraulic Oil When S.O.S. Sample Is Taken{0372,5068}

1982/01/11 "Sirs User Instructions" Available{0374}