105952-0450 ZEXEL 9 420 610 807 BOSCH ACTUATOR 9420610807 1059520450

Problem
The fuel lines on certain 3408 Generator Set, Industrial, and Marine engines may fail. New fuel line groups can be installed that have a longer service life.
Affected Product
Model & Identification Number
3408 (67U12405-15199; 78Z2829-4522; 99U5985-7229)
Parts Needed
1 - 6I0030 Fuel Line Group6 - 5M2894 Washer6 - 0S0509 BoltAdditional Parts Needed For DIT Engines (Non-Aftercooled)
5 - 5M2894 Washer1 - 4P8261 Bracket1 - 4P8385 Bracket2 - 5P0537 Washer5 - 0S1571 Bolt2 - 0S1615 Bolt3 - 8T1296 WasherAction Required
Parts Stock
Make sure that all 7C6931, 7C6932, 7C6933, 7C6934, 7C6935, 7C6936, 7C6937 and 7C6938 Fuel Lines were removed from parts stock while implementing Product Support Program PS4737.
Affected Product
Remove the existing fuel lines and install the new fuel injection line groups as a group. See the attached rework procedure.
Do not over tighten the screws of the metal-to- metal fuel line clamps. Use a 6V6069 Torgue Screwdriver or similar tool to tighten the screw to a torgue of 2.25 N m (20 lb in).
Service Claim Allowances
Parts Stock
Refer to the Product Support Program PS4737.
Affected Product
This is a 2.2-hour job.
Parts Disposition
Handle the parts in accordance with your Warranty Bulletin on warranty parts handling.
Attach. (1-Rework Procedure)Rework Procedure
Refer to the parts list and illustrations. Replace the existing fuel lines and their related parts with the new 6I0030 Fuel Line Group.
To insure that the clamp locations are correct, install fuel line group as assembled. In a case where it is necessary to remove the clamps, mark their locations to insure the correct position when assembling.
1. Clean and paint the new 6I0030 Fuel Line Group before proceeding to the job site.A) Install 5F2807 Plastic Caps and 2F2990 Plastic Plugs on the ends of the lines.B) Clean and paint the fuel line group.C) After drying, do not remove the plastic plugs and caps until the fuel line group is ready to be installed on the engine. Transport the fuel line group in it's original shipping box. If the engine to be reworked is non-aftercooled, also clean and pre-paint the new 4P8385 and 4P8261 Brackets.
2. Remove all the mounting bolts from the fuel line bracket at the aftercooler housing on DITA engines or at the 6N1671 Bracket on DIT engines. The 6N1671 Bracket in the vee of the DIT (non- aftercooled) engines is used to support the fuel line brackets. This bracket is part of the 6N1672 Fastener Group, Affected Product not having an aftercooler required a new two piece bracket.
3. Disconnect all the fuel line nuts at the fuel injection pump and at the adapters in the valve cover bases.4. a) Remove the old fuel line group.b) On DIT engines only, remove the 6N1671 Bracket from the vee of the engine and install the new brackets. Illustrations 2 and 3 show how the new brackets are installed. The 4P8385 Bracket and 4P8261 Bracket are the 2 main parts of this group. Five 0S1571 Bolts and five 5M2894 Washers attach the assembly to the block. To align the assembly correctly, three 8T1296 Washers are reguired to shim the brackets to the block (see Illustration