HOUSING AS-TURBINE 4504032 - Caterpillar

Removal Procedure
Start By:
Remove the front housing. Refer to Disassembly and Assembly, "Housing (Front) - Remove" for the correct procedure.
Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting and repair of the product. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids.Dispose of all fluids according to local regulations and mandates.
Keep all parts clean from contaminants.Contaminants may cause rapid wear and shortened component life.
If the front housing is not installed, do not turn the crankshaft. Damage to the engine may occur.
Illustration 1 g03331719
Personal injury can result from being struck by parts propelled by a released spring force.Make sure to wear all necessary protective equipment.Follow the recommended procedure and use all recommended tooling to release the spring force.
Remove C-clip (9) that retains idler gear (3) onto idler hub (1).
Remove the following components from idler hub (1) collar (8), spring (7), shim (6) and oil pump cover (5).
Remove idler gear (3) from idler hub (1).
Remove inner rotor (4) from idler hub (1).
Remove thrust washer (2) from idler hub (1).
Illustration 2 g03331717
If necessary, follow Step 6.a through Step 6.d In order to remove oil strainer (13) and suction pipe (11).
Remove the engine oil pan. Refer to Disassembly and Assembly, "Engine Oil Pan - Remove and Install" for the correct procedure.
Remove bolts (12) and oil strainer (13) from the cylinder block.
Remove suction pipe (11) from the cylinder block.
Remove O-ring seal (10) from the suction pipe.
Illustration 3 g03331715
Illustration 4 g03331716
If necessary, follow Step 7.a through Step 7.d In order to remove idler hub (1) from the cylinder block.
Remove camshaft (16). Refer to Disassembly and Assembly, "Camshaft - Remove" for the correct procedure.
Remove bolts (17) and plate (14) from the cylinder block.
Remove gasket (15) (not shown).
Remove crankshaft (18). Refer to Disassembly and Assembly, "Crankshaft - Remove" for the correct procedure.
Use a hammer and use a suitable drift in order to remove idler hub (1) from the cylinder block. Align the drift to the rear face of the idler hub and drive the idler hub from the inside of the cylinder block outward.