3054 and 3056 Marine Generator Sets Caterpillar

3054 Marine Generator Set

Illustration 1	g00749578
(1) Valve (2) Clips (3) Element (4) Clip retainers (5) Baffles (6) Gasket (7) Elbow

Note: Clean the body of the breather, the cover, and the baffle (5) and replace the element (3) at 2000 Service Hours. Replace the valve (1) at 4000 Service Hours.

The crankcase breather removes the combustion gases from the engine crankcase. The crankcase breather directs the gases to the induction system.

An internal port in the rocker cover allows the gases in the crankcase to pass into the breather body through an element (3). The gases flow through a series of baffles (5) and into the valve cover through holes at the bottom of the chamber for the baffles. Valve (1) controls the flow of gases which pass from the breather through the plastic outlet elbow (7) to the intake manifold.

The valve cover and the breather assembly are made of a composite material. The valve cover and the breather assembly should be removed and installed with care.

Disassembly

1. Release the hose clamp and carefully remove the hose from elbow (7).

2. Remove the valve cover. Refer to the Service Manual for more information.
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   NOTICE
   Use care not to damage the breather cover or the breather body with a pry bar.

3. Remove the bolts and carefully remove the breather cover from the breather body. It may be necessary to use a suitable pry bar in order to remove the breather cover from the breather body. Ensure that the pry bar does not damage the breather cover or the breather body. Gasket (6) should be removed and discarded.

4. Release clip retainers (2) on valve (1). Push valve (1) out of the breather cover.

5. Element (3) should be removed and discarded.
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   NOTICE
   To prevent damage to the breather valve, remove the breather valve before the cover is washed.

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   NOTICE
   Ensure that all the cleaning fluid is removed before the breather is assembled.

6. Use a clean nonflammable solvent to wash the body of the breather, the cover, baffle (5), and elbow (7). Thoroughly dry the components after cleaning the components.

7. Ensure that the holes in the bottom of the chamber for baffles (5 ) are not restricted. If necessary, clean the holes.

Assembly

1. Install baffles (5) into the grooves in the breather body.

2. Install a new element (3) into the breather body.

3. Install a new valve (1) into the breather cover. Ensure that clip retainers (2) are engaged correctly.

4. Install a new gasket (6). The gasket is installed dry. Put the cover and valve assembly into position on the breather body. Loosely install the bolts. Tighten the bolts gradually and tighten the bolts evenly to a torque of 3 N·m (27 lb in).
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   NOTICE
   Do not use excessive force to fit the hose to the breather outlet elbow.

5. Ensure that there is no restriction in elbow (7) or in the breather hose. Carefully install the breather hose on elbow (7). Tighten the hose clamps that fasten the hose to the elbow.

Procedure to Repair the Connection for the Outlet Elbow of the Breather

If the outlet elbow for the crankcase breather breaks, then use the following procedure in order to repair the elbow.

1. Ensure that the breather body is secure. Use a 22.5 mm (0.89 inch) drill in order to drill to a depth of 10.0 mm (0.39 inch). Drill the depth in order to remove the broken connection of the outlet elbow. Thoroughly clean the inside of the breather body.

2. Thoroughly clean the contact faces of the elbow (7) and the breather cover.

3. Install elbow (7). Ensure that the contact surface of the connection for the elbow has a rough finish. Put the elbow into position on the breather body.

4. Apply Permabond® E3524 adhesive. Refer to the instructions on the adhesive. The adhesive will secure the elbow to the breather body.

3056 Marine Generator Set

The closed crankcase ventilation system (CCV) on the 3056 Marine Generator Set is maintenance free. No maintenance is required.