C6.6 Industrial Engine Caterpillar

Crankcase Breather - Install

Usage:

C6.6 667

Installation Procedure

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NOTICE

Keep all parts clean from contaminants. Contaminants may cause rapid wear and shortened component life.

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NOTICE

When disconnecting and connecting the plastic tube assemblies for the crankcase breather system, the plastic tube assemblies should not be twisted. Twisting of the plastic tube assemblies will result in the seals being damaged. Damaged to seals will result in leakage.

Ensure that all components of the crankcase breather are clean and free from damage. Replace any components that are damaged.
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Illustration 1 g02163116
If necessary, follow Step 2.a through Step 2.e in order to assemble the breather canister.
1. Install a new seal (13) to bottom cap (14).
2. Install bottom cap (14) onto breather canister (1).
3. Install a new filter element (12) to breather canister (1). Refer to Operation and Maintenance Manual, "Engine Crankcase Breather Element - Replace" for the correct procedure.
4. Install a new seal (11) to top cap (10).
5. Install top cap (10) onto breather canister (1).
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Illustration 2 g02163114
Position breather canister (1) onto the cylinder head and install bolts (7). Tighten the bolts to a torque of 22 N·m (195 lb in).
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Illustration 3 g02163115
Install a new O-ring seal (9) to valve (6).
Note: Do not lubricate the O-ring seal.
Install valve (6) into the cylinder block. Install bolt (8) and tighten the bolt to a torque of 22 N·m (195 lb in).
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Illustration 4 g02163113
Ensure that plastic tube assembly (3), plastic tube assembly (4), and plastic tube assembly (5) are clean and free from restriction.
Connect plastic tube assembly (5) to breather canister (1) and valve (6) in the cylinder block.
Connect plastic tube assembly (4) to breather canister (1). Ensure that plastic tube assembly (4) is correctly locked into the outlet of crankcase breather cannister (1).
Ensure that plastic tube assembly (4) is correctly positioned onto clips. If necessary, install new cable straps.
Note: Ensure that the cable straps meet the Original Equipment Manufacturers (OEM) specification.
Connect plastic tube assembly (3) to breather canister (1) and the valve mechanism cover. Ensure that plastic tube assembly (3) is correctly locked into the inlet of crankcase breather cannister (1).
Install a new cable strap (2) to plastic tube assembly (3).
Note: Ensure that the cable straps meet the OEM specification.