1989/03/06 Caterpillar


New Bleed Screw Used On 7000 Series Fuel Injection Nozzles{1254}

Usage:


3200, 3300, And 3400 Families Of Engines

Description of Change: The bleed screw on 7000 series fuel injection nozzles in the 3200, 3300, and 3400 Families Of Engines has been changed. The new bleed screw has a TORX® socket head while the former bleed screw had a hex socket head. See the illustration. The new TORX® socket head bleed screw allows a more consistent torque capability which will result in better sealing. A TORX® T-15 tool is required to remove and install the new bleed screw.


Bleed screw identification.

Adaptable To: The new TORX® socket head bleed screw is used in all 7000 series fuel injection nozzles in the 3200, 3300 and 3400 Families Of Engines. If a bleed screw is damaged or lost replace it with a 8C3234 Screw (TORX® socket head). A 1U5895 Bit (TORX® T-15) is available to use with the 6V4980 Tool Group to remove or install the new bleed screw. The installation torque of the new bleed screw is 2.2 ± 0.8 N·m (20 ± 7 lb in).

Caterpillar Information System:

1989/03/06 New Engine Wall Charts Give Maintenance Management Recommendations{0374,0375,7500,7557,7580}
1989/03/06 High Horsepower Standby Generator Set Engines{1000}
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1989/02/13 Cold Start Procedures For 3406 (PEEC) Truck Engines{1705}
1989/02/13 New Publication Available-"Coolant And Your Engine"{1395,0374,0375}
1989/03/20 Elbow Fitting Available To Allow "Quick-Drain" Line To Oil Pan{1302,1307}
1989/03/20 Improved Magnet Used In Rack Assembly{1705,1286}
1989/03/20 Correct Torque For Bolts That Fasten Pulley To Stub Shaft In Radiator Group{1350}
1989/03/27 Limitations On Engine Cranking Time{1453,1401}
1989/03/27 Understanding "Shorts," "Opens" and "Intermittents"{1400}
1989/03/27 Understanding Causes Of Blown Fuses And Tripped Circuit Breakers{1400,1420}
1989/03/27 How To Troubleshoot A Short-To-Ground In Power Wiring{1400}
1989/03/27 Preventive Maintenance For Batteries{1401}
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1989/03/27 Exciter Rotor Retaining Bolt Torque Specification{4457}
1989/03/27 Additional Remanufactured Parts Available{1000}
1989/04/03 Follow Recommended Procedure When Adding Oil To Track Rollers And Idlers{4154,4159,4180}
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