Caterpillar Truck Engine 3126E

Warning: This maintenance check requires trained personnel with PPE!

Inspect all hoses for leaks caused by cracking, softness, or loose clamps.

Replace hoses that are cracked or soft.

Do not bend or strike high pressure lines. Do not install bent or damaged lines, tubes or hoses.

Repair any loose or damaged fuel and oil lines, tubes and hoses.

Inspect all lines, tubes and hoses carefully.

Tighten all connections to the recommended torque.

Check for damaged or leaking end fittings.

Warning: Batteries give off combustible gases which can explode. A spark can cause the combustible gases to ignite. This can result in severe personal injury or death.

Ensure proper ventilation for batteries that are in an enclosure. Follow the proper procedures in order to help prevent electrical arcs and/or sparks near batteries. Do not smoke when batteries are serviced.

Warning: The battery cables or the batteries should not be removed with the battery cover in place. The battery cover should be removed before any servicing is attempted.

Removing the battery cables or the batteries with the cover in place may cause a battery explosion resulting in personal injury.

Turn the key start switch to the OFF position. Remove the key and all electrical loads.

Turn OFF the battery charger. Disconnect the charger.

The NEGATIVE “-” cable connects the NEGATIVE “-” battery terminal to the ground plane. Disconnect the cable from the NEGATIVE “-” battery terminal.

The POSITIVE “+” cable connects the POSITIVE “+” battery terminal to the starting motor. Disconnect the cable from the POSITIVE “+” battery terminal.

Note: Always recycle a battery. Never discard a battery. Return used batteries to an appropriate recycling facility.

Warning: This procedure requires trained personnel with PPE!

Failure to replace your water temperature regulator on a regularly scheduled basis could cause severe engine damage.

Water temperature regulator present?

Water temperature regulator in good condition?

If the water temperature regulator is not in good condition, proceed with the replacement.

Upload a photo of the old water temperature regulator

Ensure that the new water temperature regulator is installed in the original position.

New water temperature regulator installed correctly?

Upload a photo of the new water temperature regulator installation

Warning: This inspection requires trained personnel with PPE!

Turbocharger bearing failures can cause large quantities of oil to enter the air inlet and exhaust systems. Loss of engine lubricant can result in serious engine damage.

Minor leakage of a turbocharger housing under extended low idle operation should not cause problems as long as a turbocharger bearing failure has not occurred.

When a turbocharger bearing failure is accompanied by a significant engine performance loss (exhaust smoke or engine rpm up at no load), do not continue engine operation until the turbocharger is repaired or replaced.

An inspection of the turbocharger can minimize unscheduled downtime.

An inspection of the turbocharger can also reduce the chance for potential damage to other engine parts.

Note: Turbocharger components require precision clearances. The turbocharger cartridge must be balanced due to high rpm. Severe Service Applications can accelerate component wear. Severe Service Applications require more frequent inspections of the cartridge.

Remove the exhaust outlet piping and remove the air inlet piping from the turbocharger. Visually inspect the piping for the presence of oil. Clean the interior of the pipes in order to prevent dirt from entering during reassembly.

Turn the compressor wheel and the turbine wheel by hand. The assembly should turn freely. Inspect the compressor wheel and the turbine wheel for contact with the turbocharger housing. There should not be any visible signs of contact between the turbine wheel or compressor wheel and the turbocharger housing.

Warning: Personal injury can result from air pressure. When using pressure air, wear a protective face shield and protective clothing.

Warning: Maximum air pressure at the nozzle must be less than 205 kPa (30 psi) for cleaning purposes.

Warning: The maximum water pressure for cleaning purposes must be less than 275 kPa (40 psi).

Inspect the aftercooler for these items: damaged fins, corrosion, dirt, grease, insects, leaves, oil, and other debris.

Clean the aftercooler, if necessary.

Use pressurized air to remove loose debris.

Use pressurized water to soften mud.

Use a degreaser and steam for removal of oil and grease.

Wash the core with detergent and hot water.