C6.6 Engines for Caterpillar Built Machines Crankcase Breather - Install - Unfiltered Breather Caterpillar

Installation Procedure

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Illustration 1	g01339595
Breather tool

1. To install the breather body, Tooling (A) must be used. The tool should be fabricated from 3.1 mm (1/8 inch) steel stock. The dimensions for the tool are given in Illustration 1. All dimensions are shown in millimeters.

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Illustration 2	g01339597

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Illustration 3	g03704554

Note: Illustration 3 shows the later type of crankcase breather cover that is installed in the valve mechanism cover. The later type of crankcase breather cover is not serviceable.

2. Ensure that all components of the crankcase breather are clean and free from damage. Replace any components that are damaged.

3. Lubricate a new O-ring seal (9) with clean engine oil. Install the O-ring seal to the adapter plate (8) .

4. Install adapter plate (8) to valve mechanism cover (10) .

5. Install washers (7) and bolts (6) to adapter plate (8) . Tighten the bolts to a torque of 4.4 N·m (38 lb in).

6. Lubricate a new O-ring seal (5) with clean engine oil. Install the O-ring seal to the bottom of breather body (4) .

7. Use Tooling (A) in order to screw breather body (4) into adapter plate (8) . Tighten the breather body to a torque of 8 N·m (71 lb in).

8. Install gauze (2) into breather body (4) .

9. Lubricate a new O-ring seal (3) with clean engine oil. Install the O-ring seal to the top of breather body (4) .

10. Install cover (1) to breather body (4) .

    Note: Ensure that the outlet of the cover is in the correct position in order to align with hose (12) for the breather.

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Illustration 4	g01339688

11. Install clamps (11) to hose (12) .

12. Connect hose (12) to cover (1) and to tube (13) . Tighten the clamps.