BEARING-IDLER 4155188 - Caterpillar

Removal Procedure
Keep all parts clean from contaminants.Contaminants may cause rapid wear and shortened component life.
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.
The two cylinder, the three cylinder and the four cylinder engines have different crankcase breathers. The removal procedure is similar for all models.
Illustration 1 g01307795
Typical example
Personal injury can result from parts and/or covers under spring pressure.Spring force will be released when covers are removed.Be prepared to hold spring loaded covers as the bolts are loosened.
Remove bolts (1) and remove the assembly of cover (2), spring (3) and diaphragm (4). Note the orientation of cover (2).
Remove spring (3) and diaphragm (4) from cover (2).
If necessary, follow Steps 3.a through 3.c in order to remove the gauze for the breather.
Remove valve mechanism cover (7). Refer to Disassembly and Assembly, "Valve Mechanism Cover - Remove and Install" for the correct procedure.
Remove screws (8) and carefully remove plate (9).
Remove gauze (6) from valve mechanism cover (7). Installation Procedure
Table 1
Required Tools
Tool Part Number Part Description Qty
A - Loctite 594 -
B 247-5377 Torque Wrench 1
Keep all parts clean from contaminants.Contaminants may cause rapid wear and shortened component life.
Make sure that the components of the breather assembly are installed correctly. Engine damage may occur if the breather assembly is not working properly.
The two cylinder, the three cylinder and the four cylinder engines have different crankcase breathers. The installation procedure is similar for all models.
Illustration 2 g01307795
Typical example
Clean all parts and inspect all parts. Replace any parts that are worn or damaged. Ensure that the cavity for the breather in the valve mechanism cover is clean. Ensure that vent hole (5) and the vent hole in cover (2) are free from restriction.
If necessary, follow Steps 2.a through 2.e in order to install the gauze for the breather.
Install gauze (6) to valve mechanism cover (7).
Apply a bead of Tooling (A) to the mating surface of the plate on valve mechanism cover (7).
Position plate (9) on valve mechanism cover (7) and install screws (8).
Tighten screws (8) to a torque of 1.5 N m (13 lb in).
Install valve mechanism cover (7). Refer to Disassembly and Assembly, "Valve Mechanism Cover - Remove and Install" for the correct procedure.
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.
Install diaphragm (4) and spring (3) to cover (2).
Position the assembly of cover (2), spring (3) and diaphragm (4) onto valve mechanism cover (7). Note: Ensure the correct orientation of the cover.
Install bolts (1). Use Tooling (B) in order to tighten bolts to a torque of 3 N m (27 lb in).