Either Type Sleeve Satisfactory For Governor Servo Piston {1264}
Usage:
3300 Family Of Engines With New Scroll Fuel System, And All 3300B And 3400B Families Of Engines
The new scroll fuel system (NSFS) used in the above engines has a sleeve in the governor servo piston. See illustration.
The two types of sleeves used in the servo piston.
This 7W250 Sleeve has two different designs on the end for oil supply. There can be either six or 16 equally spaced notches around the end of the sleeve as shown. Sleeves with either design are acceptable for use.
Caterpillar Information System:
1987/09/28 Double Lip Seal With Hydrodynamic Grooves Used At Rear Of Crankshaft {1161,1200}
1987/09/28 Thinner Piston Retaining Nuts Are Used In Hydraulic Cylinders {7562}
1987/09/21 New Timing Gear Housing Used In Front Housing Groups To Help Prevent Oil Leaks{1162,1166}
1987/09/21 Single Lip Hydrodynamic Seal Used In Water Pumps{1300,1361}
1987/09/21 New Hydraulic Steering Mounting Group Available{4306}
1987/09/21 New Alternator Used In Charging Alternator Groups{1405}
1987/09/21 New Adapters Available For Metric Test Ports So That SAE Connectors Can Be Used{0784}
1987/09/14 Oil Flow Increased For Inlet Valve Lubricator {1105}
1987/09/14 New Digital Pyrometer Which Incorporates High Exhaust Temperature Alarm Now Used {1606,7412,7450,7466}
1987/09/14 New Piston Cooling Jets Used {1213,1214}
1987/09/14 Mid-Life Bearing Maintenance Recommendations {1203}
1987/09/14 New Turbochargers Have Several Improvements {1053,1066}
1987/09/28 New Steel Fuel Injection Pump Lifters Should Not Be Mixed With Aluminum Lifters {1281,1250}
1987/09/28 New Special Instruction, "Using the PEEC Screen Map(s)" {0374}
1987/09/28 Engine Oil Coolers Have Rubber End Sheets In Place Of Brazed Sheets {1300,1378}
1987/10/05 Individual Parts Of Caterpillar Hydraulic Gear Pumps Are Available{5073}
1987/10/05 New Product Support Information Available For Electric Power Generation (EPG){4450,0374}
1987/10/05 Replacement Thermostats Available For Jacket Water Heaters{1383}
1987/10/12 Piston And Camshaft Changes{1214,1210,1200}
1987/10/19 Check Plastic Water Sleeve If Engine Experiences Severe Overheating{1380,1350}
1987/10/26 Microfiche For Replacement Engine Bills Of Material {0374,1000}
1987/11/02 Improved Duo-Cone Seal Installers Available{0600,7561}
1987/11/02 Four New Sizes Of Three-Jaw Pullers Available{0700,4050}
1987/11/02 Results Of High Speed And/Or Overspeeding Of 3406B Truck Engines{1105,1209,1210,1214}