C6.6 Engines for Caterpillar Built Machines Crankcase Breather - Install - Filtered 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 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 setscrews 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 (15) for the breather.

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Illustration 4	g01339655

11. Install bolts (17) to base (18) .

    If a spacer is installed, position the spacer (16) to the bolts.

12. Install the assembly of the base to the inlet manifold.

13. Tighten bolts (17) to a torque of 22 N·m (16 lb ft).

14. Install a new canister (20) to base (18) . Refer to Operation and Maintenance Manual, "Crankcase Breather (Canister) - Replace".

15. Install spring clamps (14) to hose (15) . Install hose (15) to cover (1) and to base (18) .

    Note: Ensure that the spring clamps are correctly positioned in order to secure the hose.

16. Install clamp (19) to hose (21) . Install hose (21) to base (18) . Tighten the clamp.