1984/04/04 Caterpillar


New Adapter Assemblies And Clamps Used To Hold Fuel Nozzles In Position

Usage:


3408 Truck Engines

Description of Change: New adapter assemblies are used in the cylinder head groups on 3408 Truck Engines. Less torque is used to install these adapters in the cylinder head. Because less torque is used, damage to the cylinder head and/or adapter can be prevented. Formerly, if too much torque was used to tighten the adapter, damage to the cylinder head and/or adapter could result.

New clamps and sleeves are used with these new adapters to hold the fuel nozzles and valve bodies in position. Formerly nuts were used.

Adaptable As: The new adapter assemblies are direct replacements for the former adapter assemblies when used with the other parts shown in the chart.

When the new adapter assembly is installed in the cylinder head, it should be tightened to a torque of 135 ± 5 N·m (100 ± 4 lb ft). Tighten the bolts that hold the clamp in position to a torque of 31 ± 7 N·m (23 ± 5 lb ft).


Illustration 1. Location of new parts in the cylinder head groups.


Illustration 2. Location of new parts in the fuel lines groups.

Caterpillar Information System:

1984/04/04 Parts Service Engine Information Plate Available
1984/02/15 List Of Service Publications
1984/02/15 Several Temperature Detectors Available For 6V6996 And 6V7118 Induction Bearing Heaters
1984/02/15 3406B Truck Engines Available
1984/02/15 Parts Service Information For Pistons
1984/02/15 Remanufactured Cylinder Head Assemblies
1984/02/15 New Service Tools Available
1984/02/15 Some Crankshafts Must Be Tufftride Hardened After A Regrind
1984/02/15 Procedure To Remove Sharp Edges From Fuel Racks
1984/02/15 Remanufactured Connecting Rod Assemblies
1984/02/15 New Cylinder Head Assembly Made With A Different Material
1984/02/15 New Service Center For 6V2192 Injection Transducer
1984/04/04 List of Service Publications
1984/04/04 Information For Ordering FLEX-HONES And Grit Sizes For Reconditioning Cylinder Liners Or Cylinder Block Bores
1984/04/04 6V7925 Fuel Rate Indicator Is Available
1984/04/04 Service Tools With Dual Scale (U.S. Standard And Metric) Will Again Be Available
1984/04/04 Remanufactured Undersize Crankshafts Are Available
1984/04/04 Fuel Setting And Air Fuel Ratio Control Adjustment Tools For 3406B Engines
1984/04/04 6V3176 Relief Valve Available For Center Hole Double Acting Hydraulic Cylinders
1984/04/04 Make Sure There Is Clearance Between Cylinder Head And Fuel Injection Pump Housing When A New Cylinder Head Is Installed
1984/04/04 New Aftercooler Hose Clamp Helps Prevent Leaks
1984/05/23 Dimensions For Reconditioning Cylinder Blocks, Cylinder Heads
1984/05/23 New Valve Assembly And Seal Used In Fuel Transfer Pump
1984/05/23 List Of Service Publications
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