1987/09/01 Caterpillar


New Digital Pyrometer Which Incorporates High Exhaust Temperature Alarm Now Used

Usage:


3600 Family Of Engines

Description of Change: A new digital pyrometer is used in the instrument panel groups of the above engines. The new pyrometer gives a more accurate reading of the exhaust temperature than the former pyrometer. Additionally, a high exhaust gas temperature switch is incorporated.

Adaptable To: On in-line engines, the new 7C8980 Gauge (pyrometer) is a direct replacement for the former 3N7012 Pyrometer when used with the 7C9003 Front Plate and the 7C9220 Plug Assembly. Two 7C8980 Gauges (pyrometers) along with the 7C9003 Front Plate are required to replace the former 3N4416 Pyrometer on vee engines. The 7C9003 Front Plate is part of the instrument panel group. The 7C9003 Front Plate is required to accommodate the larger diameter face of the new pyrometer. The 7C9003 Front Plate is a direct replacement for the former 4W3036 Front Plate on in-line engines and the former 7W8360 Front Plate on vee engines. Refer to the illustration.


Mounting of the 7C8980 Gauge in the 7C9003 Front Plate with the 7C9220 Plug Assembly. In-line engine instrument panel group shown.

The new 7C9003 Front Plate does not include gauge name plates. Name plates can either be removed from the former front plate or new ones can be ordered. Refer to the chart for part number information.

Caterpillar Information System:

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
1987/09/01 New O-Ring Seals Used In Water Lines
1987/09/01 New Turbochargers Have Several Improvements
1987/09/01 Additional Engine Tilt Installation Angles And Engine Dipstick Markings
1987/09/01 Engine Oil Refill Capacity Decreased
1987/09/01 Improved High Temperature Seals Available
1987/09/01 Be Sure To Correctly Tighten Turbocharger Clamp Assemblies
1987/09/01 New Timing Gear Housing Used In Front Housing Groups To Help Prevent Oil Leaks
1987/09/01 New Piston Cooling Jets Used
1987/09/01 Mid-Life Bearing Maintenance Recommendations
1987/09/01 Recommendations For Preventing Cooling System Damage
1987/09/01 More Accurate And Easier Method To Adjust 8T1815 Or 6L5438 Main Shaft Bearing
1987/09/01 Improved Clutch Piston And Retraction Pins Available
1987/09/01 Four More Remanufactured Fuel Pump And Governor Groups Available
1987/10/01 Piston And Camshaft Changes
1987/10/01 New Product Support Information Available For Electric Power Generation (EPG)
1987/10/01 New Alternator Group Used In Charging Alternator Groups
1987/10/01 New Hydraulic Steering Mounting Group Available
1987/10/01 Replacement Thermostats Available For Jacket Water Heaters
1987/10/01 Either Type Sleeve Satisfactory For Governor Servo Piston
1987/10/01 Single Lip Hydrodynamic Seal Used In Water Pumps
1987/10/01 New Steel Fuel Injection Pump Lifters Should Not Be Mixed With Aluminum Lifters
1987/11/01 New Service Tools Available
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