BRACKET AS 3160360 - Caterpillar

Introduction
This guideline enables dealers and their customers to benefit from cost reductions made possible through an established parts reusability and salvage program. Every effort has been made to provide the most current and relevant information known to Caterpillar Inc. Since the Company makes ongoing changes and improvements to its products, this Guideline must be used with the latest technical information available from Caterpillar to ensure such changes and improvements are incorporated where applicable.
For questions or additional information concerning this Guideline, contact Caterpillar Service Support Division, Dealer Support (309) 675-5156.
Summary
Installing new fuel system parts during a 3300 or 3400 Engine rebuild is often not necessary. This guideline provides visual examples to help determine if the part is reusable. Fuel system parts used in the same application and meeting the Use Again specifications in this guideline, can be expected to give normal performance until the next overhaul.
Never install a fuel system part that this guideline shows cannot be used again. During reconditioning, correct any conditions that might have caused the original failure.
Visual Inspection
Illustration 1
Rack bar zero pin slot damage.
Use again _ef__bf__bd_
After deburring
Illustration 2
Rack bar damage from rubbing lifter window.
Do not use again
Illustration 3
Rack bar scratching and button damage.
Use again _ef__bf__bd_
after deburring
Illustration 4
Rack bar button wear.
Use again
General Information
Fuel Rack Slots (3408, 3412 Engines without NSFS)
The method by which the fuel rack slots are hardened on all 3408 and 3412 Engines has been improved. This will give better wear resistance in the areas where the fuel rack comes in contact with the 4N-1572 Cross Link. The basic dimensions for the fuel rack slot and cross link are shown in Illustration 5. The maximum total wear between the fuel rack slot and cross link ball head must not exceed 0.13 mm (.005 in). We also recommend that a new 9S-4160 Bearing be installed when any new fuel rack is installed, as shown in Illustration 6. Use the procedure in the Service Manuals for 3408 Engines.
Illustration 5
Dimensions for 4N-1572 Cross Link and fuel rack slot.
Cross link
(2) Fuel rack
(A) 9.600 _ef__bf__bd_ 0.013 mm (.3780 _ef__bf__bd_ .0005 in)
(B) 9.652 _ef__bf__bd_ 0.013 mm (.3800 _ef__bf__bd_ .0005 in)
Illustration 6
Location of 9S-4160 Bearings (3).
The 4N-0900 (right) and 4N-0901 (left) Fuel Racks are a direct replacement for the former fuel racks. The part numbers did not change. A different tooth pattern can be used for identification of the new and former fuel racks. Refer to Illustration 7.
Illustration 7
New (5) and former (4) fuel rack tooth patterns.
Procedures
Procedures to Remove Sharp Edges from Fuel Racks (Engines without NSFS)
There have been reports that some of the fuel racks on 3408 and 3412 Engines may have sharp edges on the teeth. These sharp edges can cause wear on the fuel injection pump gears.
The racks used on these engines have two different designs. Only the racks with the flat root surfaces might have sharp edges on the teeth. The other racks have a round root surface. Refer to Illustration 8.
Illustration 8
Fiber brush a radius at these locations on the racks that have a flat root