159248-3120 ZEXEL 9 421 621 688 BOSCH ACTUATOR 9421621688 1592483120 8941711800

Introduction
The problem that is identified below does not have a known permanent solution. Until a permanent solution is known, use the solution that is identified below.Problem
DEF heated lines can get damaged during handling or other failure modes and leak diesel exhaust fluid on Clean Emission Module (CEM) and other components.Solution
Caterpillar is aware of this problem and is recommending the following interim corrective action.
Do not operate or work on this product unless you have read and understood the instruction and warnings in the relevant Operation and Maintenance Manuals and relevant service literature. Failure to follow the instructions or heed the warnings could result in injury or death. Proper care is your responsibility.
Rework Procedure
Note: This procedure is meant for temporary repair of a DEF line to allow the machine to be safely transported to the repair shop.
Table 1
Required Parts
Part Number Part Name
473-2053 Diesel Exhaust Fluid Lines Gp (5/16th 90 degree adapter)
473-2055 Diesel Exhaust Fluid Lines Gp (5/16th straight adapter)
473-2056 Diesel Exhaust Fluid Lines Gp (3/8th 90 degree adapter)
473-2057 Diesel Exhaust Fluid Lines Gp (38th 90 Straight adapter)
Table 2
Required Tools
Part Number Part Name
1U-7648 Tube Cutter
Illustration 1 g06433660
Cut the connector end on the corrugated section with the cutter.
Illustration 2 g06433665
Cut the two wires with a tie cutter.
Illustration 3 g06433668
Use a knife or sharp blade to cut the outer sheathing off. Ensure not to cut or damage the inner fluid hose.
Illustration 4 g06433669
Install the hose clamp provided first before installing the connector. Use appropriate size (3/8th or 5/16th) and type (90 degree or straight) fitting.
Illustration 5 g06433672
Fasten the clamp until the two jaws are either in contact or about 2 to 3 mm (0.08 to 0.1 inch) apart.