BOOT 3831408 - Caterpillar

Keep all parts clean from contaminants.Contaminants may cause rapid wear and shortened component life.
Illustration 1 g02439736
Disconnect plastic tube assembly (2) from breather canister (3) and breather connection (1) on the valve mechanism cover.
Disconnect plastic tube assembly (4) from breather canister (3) .
Cut cable straps from clips (5) (not shown). Remove plastic tube assembly (4) .
Illustration 2 g02439737
Disconnect harness assembly (8) from the fuel temperature sensor.
Remove plastic tube assembly (7) from breather canister (3) and valve (9) in the cylinder block.
Remove bolts (6) and remove breather canister (3) from the cylinder head.
Illustration 3 g02439738
If necessary, follow Step 7.a through Step 7.b in order to remove valve (9) from the cylinder block.
Remove bolt (11) from valve (9) .
Remove valve (9) from the cylinder block.
Remove O-ring seal (10) from valve (9) .
Illustration 4 g02439739
If necessary, follow Step 8.a through Step 8.c in order to disassemble the breather canister.
Remove cap (12) from breather canister (3) .
Remove seal (13) from cap (12) .
Remove filter element (14) from breather canister (3). Refer to Operation and Maintenance Manual, "Engine Crankcase Breather Element - Replace" for the correct procedure.Installation Procedure
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.
Keep all parts clean from contaminants.Contaminants may cause rapid wear and shortened component life.
Ensure that all components of the crankcase breather are clean and free from damage. Replace any components that are damaged.
Illustration 5 g02439739
If necessary, follow Step 2.a through Step 2.c in order to assemble the breather canister.
Install a new seal (3) to top cap (12) .
Install a new filter element (14) to breather canister (3). Refer to Operation and Maintenance Manual, "Engine Crankcase Breather Element - Replace" for the correct procedure.
Install top cap (12) onto breather canister (3) .
Illustration 6 g02439738
If necessary, follow Step 3.a through Step 3.c in order to install valve (9) to the cylinder block.
Install a new O-ring seal (10) to valve (9) .Note: Do not lubricate the O-ring seal.
Install valve (9) into the cylinder block. Install bolt (11) .
Tighten bolt (11) to a torque of 22 N m (195 lb in).
Illustration 7 g02439737
Position breather canister (3) onto the cylinder head and install bolts (6). Tighten the bolts to a torque of 22 N m (195 lb in).
Connect plastic tube assembly (7) to breather canister (3) and valve (9) in the cylinder block.
Connect harness assembly (8) to the fuel temperature sensor.
Illustration 8 g02439736
Connect plastic tube assembly (2) from breather canister (3) and breather connection (1) on the valve mechanism cover.
Connect plastic tube assembly (4) to breather canister (3) .
Install new cable straps to clips (5) (not shown). Position plastic tube assembly (4) onto clips (5) (not shown). Install cable straps to the plastic tube assembly.