1987/10/01 Caterpillar


Single Lip Hydrodynamic Seal Used In Water Pumps

Usage:


3300 Family Of Engines

Description of Change: A new single lip seal with hydrodynamic grooves is used in the water pump on the 3300 Family of engines. The hydrodynamic grooves are on the new seal lip, and force any oil back into the engine as the seal and shaft rotate. See illustration.


New seal design used in the water pump on the 3300 Family of engines.

Adaptable To: The new 8C5210 Seal can be used as a direct replacement for the former 8T5919 Seal Group which is still serviced for other applications. Part number of the 2W8002 Water Pump Group did not change.

When the new seal is installed, do the following:

1. Install the seal DRY, and do NOT put oil on the shaft.

2. Put the lip toward the pump drive gear so the grooves will direct the oil toward the engine.

3. Replace the 4N5834 Filter in the weep hole every time a new seal is installed.

Caterpillar Information System:

1987/10/01 Either Type Sleeve Satisfactory For Governor Servo Piston
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1987/10/01 New Hydraulic Steering Mounting Group Available
1987/10/01 New Alternator Group Used In Charging Alternator Groups
1987/10/01 New Product Support Information Available For Electric Power Generation (EPG)
1987/10/01 Piston And Camshaft Changes
1987/09/01 Four More Remanufactured Fuel Pump And Governor Groups Available
1987/09/01 Improved Clutch Piston And Retraction Pins Available
1987/09/01 More Accurate And Easier Method To Adjust 8T1815 Or 6L5438 Main Shaft Bearing
1987/09/01 New Digital Pyrometer Which Incorporates High Exhaust Temperature Alarm Now Used
1987/09/01 Oil Flow Increased For Inlet Valve Lubricator
1987/09/01 Engine Oil Coolers Have Rubber End Sheets In Place Of Brazed Sheets
1987/10/01 New Steel Fuel Injection Pump Lifters Should Not Be Mixed With Aluminum Lifters
1987/11/01 New Service Tools Available
1987/11/01 Parts Information For VR3 Automatic Voltage Regulators
1987/11/01 Check Plastic Water Sleeve If Engine Experiences Severe Overheating
1987/11/01 4N3311 Radiator Cap Has Improved Sealing
1987/11/01 New Air Powered Scraper Available For Gasket Removal
1987/12/01 Oil Pan Size Identification
1987/12/01 Engine Oil Refill Capacity Reduced
1987/12/01 Orifice Reverse Flow Check Valve Used In Fuel Injection Pumps
1987/12/01 Intake Valve Seals Used
1987/12/01 Improved Starter Solenoid Prevents Contact Corrosion
1987/12/01 Identification Of Metric Fasteners
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