VALVE GP 3G3927 - Caterpillar

Removal 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.
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.