Engine Crankcase Breather - Clean
If the crankcase breather is not maintained on a regular basis, the crankcase breather will become plugged. A plugged crankcase breather will cause excessive crankcase pressure that may cause crankshaft seal leakage.
- Loosen clamp (1). Slide the clamp down on tube (2) .
Show/hide table
 | |
| Illustration 1 | g02698343 |
Typical location of engine crankcase breathers | |
Show/hide table
 | |
| Illustration 2 | g00597463 |
- Loosen clamps (3). Remove both breathers as a unit.
- Remove O-ring seals (4) from the valve covers. Inspect the O-ring seals for good condition. Obtain new O-ring seals, if necessary.
Show/hide table
 | |
| Illustration 3 | g00597465 |
- Remove two clamps (6). Remove both breathers (5) from hose tee (7) .
Inspect the hose tee for cracks. If the tee is cracked, discard the old tee and obtain a new tee for installation.
Show/hide table
 | |
| Illustration 4 | g00597466 |
- Turn the breathers upside-down in order to inspect the condition of the breather elements.
Clean the breather elements with clean, nonflammable solvent. If the breather elements remain contaminated after the cleaning, discard the breathers and obtain new breathers. Do not attempt to disassemble the breathers.
Allow the breather elements to dry before installation.
- Place clamps (6) over the parts of hose tee (7) that will receive breathers (5). Install the breathers into the tee. Tighten the clamps to the torque that is listed in the Service Manual, "Specifications".
Note: Coat the rubber parts with clean engine oil or petroleum jelly in order to make installation easier.
- Coat O-ring seals (4) with clean engine oil. Place the O-ring seals on the valve covers.
- Place clamps (3) around the parts of the breathers that will be attached to the valve covers. Install both breathers as a unit. Tighten the clamps.
- Place clamp (1) on the part of the hose tee that will receive tube (2). Install the tube into the hose tee. Tighten the clamp to the torque that is listed in the Service Manual, "Specifications".
Caterpillar Information System:
3516C Generator Sets Glossary
C13, C15, and C18 Tier 4 Final Engines Front Housing and Covers
3516C Generator Set Engines Catalytic Converter Sensor
C13, C15, and C18 Tier 4 Final Engines Pressure Sensor (Exhaust Differential)
C9.3 Tier 4 Final Engines Flywheel Housing
CG137-08 and CG137-12 Generator Sets Flywheel
CG137-08 and CG137-12 Generator Sets Stub Shaft (Rear)
G3516 Engines Engine Speed Sensor
G3516 Engines Engine Speed/Timing Sensor
C13, C15, and C18 Tier 4 Final Engines Speed/Timing Sensor
C15 Engines for Combat and Tactical Vehicles Air Inlet and Exhaust System
CG137-08 and CG137-12 Engines Flywheel Housing - Remove and Install
C15 Engines for Combat and Tactical Vehicles Lubrication System
C4.4 Marine Generator Set Before Starting Engine
CG137-08 and CG137-12 Engines Crankshaft Front Seal and Wear Sleeve - Remove and Install
CG137-08 and CG137-12 Engines Crankshaft Rear Seal and Wear Sleeve - Remove and Install
CG137-08 and CG137-12 Engines Timing Gear Cover - Remove and Install
CG137-08 and CG137-12 Engines Timing Gears - Remove and Install
CG137-08 and CG137-12 Engines Valve Cover Base - Remove and Install - G3412B
CG137-08 and CG137-12 Engines Rocker Shaft and Push Rod - Remove and Install - G3412B
CG137-08 and CG137-12 Engines Cylinder Head - Remove and Install - G3412B
CG137-08 and CG137-12 Engines Pistons and Connecting Rods - Remove and Install
CG137-08 and CG137-12 Engines Cylinder Liner - Remove and Install
CG137-08 and CG137-12 Engines Camshaft - Remove and Install