PISTON GP 2113218 - Caterpillar

Introduction
Do not perform any procedure in this Special Instruction until you have read the information and you understand the information.Safety Section
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.
Required Parts
Table 1
Part Number Part Name Qty
8T-6761 Pipe Plug 1
159-1244 Coupling 1 Rework Procedure
Illustration 1 g06289584
Remove the drain screen.
Remove the screen at the outlet of the drain at the bottom of the container.Note: Regardless of the condition of the drain, or amount of the water comes out after the screen is removed. It is still necessary to verify that the muffler does not hold water internally as explained in the following steps.
Verify that the drain is clear so that water flows freely from the drain hole in exhaust outlet external sump through to the ground
Illustration 2 g06289587
Illustration 3 g06289588
Drain the water from inside the muffler/silencer if present.
Looking through the exhaust outlet on top of the container, determine if water is present inside the muffler. If water is present, remove the water using a suction pump or siphon.
Drill ¼ inch to ½ inch hole in the baffle. This baffle is accessible through the exhaust outlet. This hole will assure any rain water entering into the muffler through the rain cap will drain to the lower muffler chamber.Note: The drill bit needs to be 18 inches long.
Illustration 4 g06289585
Drain the water from inside the muffler/silencer.
Remove the catalyst cover, and remove the catalyst to gain access to the lower muffler chamber.
Inspect the inside lower muffler chamber.
If water is present, place a suction hose in the bottom of the muffler chamber and remove all the water using a suction pump or siphon.
Illustration 5 g06289611
Add an extra drain.
Drill a hole to install the 159-1244 Coupling approximately 203.2 mm (8 inch) from the existing drain.Note: The outside diameter of the coupling is 40.03 mm (1.576 inch).
Weld the 159-1244 Coupling to the muffler chamber.
Install the 8T-6761 Pipe Plug into the coupling.
When the unit is not operating, remove the plug periodically to drain water from muffler.Note: The water needs to be collected and drained to the outside of the container.