3116 and 3126 HEUI Truck Engines Engine Air Cleaner Filter Element – Replace

If your air cleaner filter element becomes plugged, the air can split the element material. Unfiltered air will drastically accelerate internal engine wear.

* Service the air cleaner when required by the air cleaner service indicator. After servicing the air cleaner, reset the service indicator by pushing on the piston plunger.
* Check the precleaner (if equipped) daily for accumulation of dirt and debris. Remove any dirt and debris as needed.
* Operating conditions (dust, dirt and debris) may require more frequent air cleaner element maintenance.

Replace dirty paper elements with new ones. Keep spare filter elements on hand for replacement. The element should be thoroughly checked for rips or tears in the filter material. Check for air cleaner seal/gasket damage, and replace the filter element at least every year.

Your Caterpillar dealer has air cleaner filter elements to fit most popular makes of vehicles.

13. August 2017 by samuel07042012
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3116 and 3126 HEUI Truck Engines Cylinder Head Ground Stud – Inspect

Cylinder head ground stud location.

Inspect the OEM/Vehicle wiring harness for good connection and condition.

The cylinder head ground stud must have a wire ground to the battery negative (-) terminal. Tighten the cylinder head ground stud every oil change. Ground wires/straps should be combined at ground studs dedicated for ground use only. Inspect all of the engine grounds. All of the engine grounds should be tight and free of corrosion.

Perform the following procedures at least every other oil change, and more often as conditions require:

* Clean the cylinder head ground stud and strap terminals with a clean cloth.
* If the connections are corroded, clean with a solution of baking soda and water.
* Keep the cylinder head ground stud and the ground strap clean and coated with petroleum jelly or MPGM.

13. August 2017 by samuel07042012
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3116 and 3126 HEUI Truck Engines Cooling System Coolant (DEAC) Supplemental Coolant Additive (SCA) – Test/Add

NOTE: Before performing this maintenance, determine the type of coolant that is being used. This maintenance applies ONLY to cooling systems that are filled with conventional heavy duty coolant/antifreeze such ad Caterpillar Diesel Engine Antifreeze/Coolant (DEAC).

Test for SCA Or Obtain Level I Analysis
Check the cooling system only after the engine is stopped and cool. Remove the filler cap slowly to relieve pressure. To prevent engine damage, never add cooling system products to an overheated engine. Allow the engine to cool first.

The use of Caterpillar SCA will prevent internal damage to the engine, such as liner or block pitting. If the SCA concentration is too low, pitting of the cylinder wall may occur, which can lead to costly engine damage.

If the SCA concentration is too high, sludge and mud-like deposits may form in the cooling system. This adversely affects engine performance and can also lead to costly repairs of the engine and cooling system.

Use the 4C-9301 Test Kit or use the 8T-5296 Test Kit to check for SCA concentration. Add SCA if the concentration is too low. If the SCA concentration is excessive, drain half the coolant, and replace with the proper water/antifreeze mixture.

NOTE: You may test your coolant SCA concentration OR have the SCA concentration tested as part of a S·O·S Coolant Analysis (Level I).

Obtain Level I Analysis

S·O·S Coolant Analysis is an excellent way to monitor the condition of your coolant and your cooling system.

Level I: Basic Coolant Maintenance Check

Checks for correct chemical balance for proper heat and corrosion control. Test for:

* glycol
* SCA concentrations
* pH
* conductivity

S·O·S Coolant Analysis results and recommendations are usually made within 24 hours. Consult with your Caterpillar dealer for more information.

Add Liquid Supplemental Coolant Additive (SCA)
1. Loosen the radiator filler cap slowly in order to relieve any pressure. Remove the radiator filler cap.

2. It may be necessary to drain enough coolant from the radiator to allow for the addition of the liquid SCA.

3. Add liquid SCA according to the requirements for your cooling system capacity. Refer to the Caterpillar SCA Requirements For Heavy Duty Coolant/Antifreeze chart in the Coolant Specifications.

4. Install the radiator filler cap. Start the engine and inspect for coolant leaks. Stop the engine.

5. Check the coolant level. Add coolant if necessary. Clean the radiator filler cap. Inspect the radiator filler cap. If the gaskets are damaged, replace the old radiator filler cap with a new radiator filler cap. Install the radiator filler cap.

13. August 2017 by samuel07042012
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3116 and 3126 HEUI Truck Engines Cooling System Coolant Extender – Add

NOTE: Before performing this maintenance, determine the type of coolant that is being used. This maintenance applies ONLY to cooling systems that are filled with Caterpillar Extended Life Coolant.

Caterpillar Extended Life Coolant (ELC) does not require the frequent Supplemental Coolant Additive (SCA) additions associated with the present conventional coolants. Only a “one time” coolant Extender is required.

Check the cooling system only when the engine is stopped and cool.

1. Loosen the radiator filler cap slowly in order to relieve pressure. Remove the radiator filler cap.

2. It may be necessary to drain enough coolant from the cooling system to allow for the addition of the Extender.

3. Add Extender according to the requirements for your engine’s cooling system capacity. Refer to the Refill Capacities chart for the cooling system capacity for your engine. Refer to the Coolant Specifications for the Caterpillar ELC Extender Additions chart.

4. Install the radiator filler cap. Start the engine and inspect for coolant leaks. Stop the engine.

5. Check the coolant level. Add coolant if necessary. Clean the radiator filler cap. Inspect the radiator filler cap. If the gaskets are damaged, replace the old radiator filler cap with a new radiator filler cap. Install the radiator filler cap.

13. August 2017 by samuel07042012
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3116 and 3126 HEUI Truck Engines Cooling System Coolant (ELC) – Change

NOTE: Before performing this maintenance, determine the type of coolant that is being used. This maintenance applies ONLY to cooling systems that are filled with Caterpillar Extended Life Coolant (ELC).

Only clean water is needed in order to clean and flush the cooling system when ELC is drained and replaced.

Drain the Coolant

1. Stop the engine and allow the engine to cool. Loosen the radiator filler cap slowly to relieve any pressure. Remove the radiator filler cap.

2. Remove the cooling system drain plug(s) or open the drain valve. Open the cab heater valve to drain coolant from the cab heater. Remove the drain plug from the bottom of the water pump housing. Remove the drain plug from the bottom of the radiator. Allow the coolant to drain.
For information regarding disposal and recycling of used coolant, call the Caterpillar Service Technology Group:

Outside Illinois: 1-800-542-TOOL

Inside Illinois: 1-800-541-TOOL

Canada: 1-800-523-TOOL

Flush the Cooling System

1. Flush the cooling system with clean water to remove any debris.

2. Clean and install the drain plugs. Close the drain valve.

3. Fill the cooling system with clean water. Install the radiator filler cap. Operate the engine until the jacket water temperature reaches 49 to 66°C (150 to 120°F).

4. Stop the engine and allow the engine to cool. Loosen the radiator filler cap slowly to relieve any pressure. Remove the radiator filler cap. Remove the cooling system drain plugs. Open the drain valve. Allow the water to drain. Flush the cooling system with clean water.

5. Repeat steps 3 and 4.

Fill the Cooling System
1. Install the drain plugs. Close the drain valve. Fill the cooling system with ELC. Refer to the Refill Capacities chart for the amount of ELC needed to refill the cooling system.

2. Start and run the engine with the radiator filler cap removed. Allow the ELC to warm, the water temperature regulator to open, and the coolant level to stabilize. Add ELC if necessary in order to bring the coolant to the proper level.

3. Check the condition of the radiator filler cap. If the gaskets are damaged, replace the old radiator filler cap with a new radiator filler cap. If the gaskets are not damaged, pressure test the radiator filler cap with a 9S-8140 Pressurized Pump Group (available from your Caterpillar dealer). The correct pressure is stamped on the face of the radiator filler cap. If the radiator filler cap does not hold the correct pressure, install a new radiator filler cap.

4. Start the engine. Inspect for coolant leaks and proper operating temperature.

13. August 2017 by samuel07042012
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3116 and 3126 HEUI Truck Engines Cooling System Coolant (DEAC) – Change

NOTE: Before performing this maintenance, determine the type of coolant that is being used. This maintenance applies ONLY to cooling systems that are filled with conventional heavy duty coolant/antifreeze such as Caterpillar Diesel Engine Antifreeze/Coolant (DEAC).

Clean the cooling system before the recommended maintenance interval if:

* Coolant is heavily contaminated
* The engine overheats frequently
* Foaming is observed in the radiator
* The oil cooler has failed, allowing oil to contaminate the coolant
* Fuel has entered the cooling system and contaminated the coolant
NOTE: A good time to inspect the water pump, replace the water temperature regulator, and replace hoses is when your engine’s cooling system has been drained.

Drain the Coolant

1. Stop the engine and allow the engine to cool. Loosen the radiator filler cap slowly to relieve any pressure. Remove the radiator filler cap.

2. Remove the cooling system drain plug(s) or open the drain valve. Open the cab heater valve to drain coolant from the cab heater. Remove the drain plug from the bottom of the water pump housing. Remove the drain plug from the bottom of the radiator. Allow the coolant to drain.
For information regarding disposal and recycling of used coolant, call:

Caterpillar Service Technology Group:

Outside Illinois: 1-800-542-TOOL

Inside Illinois: 1-800-541-TOOL

Canada: 1-800-523-TOOL

Clean the Cooling System

1. Flush the cooling system with clean water to remove any debris.

2. Clean and install all drain plugs and/or close the drain valve(s).
3. Fill the cooling system with a mixture of clean water and Caterpillar Fast Acting Cooling System Cleaner. Add .5 L (1 pt) of cleaner per 15 L (4 US gal) of cooling system capacity. Install the radiator filler cap.

4. Start and run the engine for a minimum of 30 minutes with the coolant temperature at a minimum of 82°C (180°F). Stop the engine and allow the engine to cool.

5. Loosen the radiator filler cap slowly to relieve any pressure. Remove the radiator filler cap. Remove the cooling system drain plug(s) or open the drain valve(s). Allow the cleaning solution to drain. Flush the cooling system with clean water until the draining water is clear. Clean and install all drain plugs and/or close the drain valve(s).

Cooling Systems with Heavy Deposits or Plugging

NOTE: For the following procedure to be effective, there must be some active flow through the radiator and the other cooling system components.

Follow the same steps as outlined above, with the following modifications to steps 3 and 4:

3. Fill the cooling system with a mixture of clean water and Caterpillar Fast Acting Cooling System Cleaner. Add .5 L (1 pt) of cleaner per 3.8 to 7.6 L (1 to 2 US gal) of cooling system capacity. Install the radiator filler cap.

4. Start and run the engine for a minimum of 90 minutes with the coolant temperature at a minimum of 82°C (180°F). Stop the engine and allow the engine to cool.

Fill the Cooling System

Refer to the Coolant Specifications for all information regarding coolant/antifreeze requirements. Refer to the Refill Capacities chart in this publication for the capacity of your engine’s cooling system.
1. Fill the cooling system with the recommended coolant/antifreeze mixture.

2. Start and run the engine with the radiator filler cap removed. Allow the coolant to warm, the water temperature regulator to open and the coolant level to stabilize. Check the coolant level. Add coolant mixture if necessary to bring the coolant to within 13 mm (1/2 inch) below the bottom of the fill pipe or to the correct level on the sight glass (if equipped).

3. Check the condition of the radiator filler cap. If the gaskets are damaged, replace the old radiator filler cap with a new radiator filler cap. If the gaskets are not damaged, use a 9S-8140 Pressurized Pump Group to pressure test the radiator filler cap. The correct pressure is stamped on the face of the radiator filler cap. If the radiator filler cap does not hold the correct pressure, install a new radiator filler cap.

4. Start the engine. Inspect for coolant leaks and proper operating temperature.

13. August 2017 by samuel07042012
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3116 and 3126 HEUI Truck Engines Belts – Inspect

Inspect the belts when the engine is stopped.

Inspect the condition and the adjustment of the alternator belt and the accessory drive belt. Examine the belts for wear. Replace the belts if the belts show any signs of wear. Loose or worn pulley grooves cause belt slippage and low accessory drive speed. If belts are too loose, the belts vibrate enough to cause unnecessary wear on the belts and pulleys and possibly slip enough to cause overheating.

If belts are too tight, unnecessary stresses are placed upon the pulley bearings and on the belts which might shorten the service life of both.

If one belt in a set requires replacement, always install a new matched set of belts. Never replace just the worn belt. If only the worn belt is replaced, the new belt will carry all the load, as it will not be stretched as much as the older belts. All the belts will fail in rapid succession.


Belt tensioner.

* If the engine is equipped with a freon compressor (air conditioner), the belt for the fan drive, the alternator, and the accessories will have an automatic belt tensioner.
* If the engine is NOT equipped with a freon compressor, the alternator is used to adjust the belt tension.

Remove the belt guard. Inspect the condition and adjustment of alternator belts and accessory drive belts (if equipped).

To check the belt tension, apply 110 Newton (25 lb) of force, perpendicular to the belt, midway between the pulleys. Measure the belt deflection. Correctly adjusted belts will deflect 9 to 15 mm (3/8to 5/8 inch).

If the belt does not require replacement or adjustment, install the belt guard. If the belt requires adjustment or replacement, perform the following procedure to adjust the belt tension.

Alternator Belt Adjustment


(1) Adjusting bolt. (2) Mounting bolt.

1. Slightly loosen mounting bolts (2) and adjusting bolt (1).

2. Move the pulley to adjust the belt tension.

3. Tighten adjusting bolt (1). Tighten mounting bolts (2).

4. Install the belt guard.

If a new belt is installed, check the belt adjustment again after 30 minutes of engine operation at rated speed.

Water Pump Belt Adjustment


Exploded view of a water pump belt drive assembly: (1) Mounting bolt. (2) Square hole. (3) Adjusting bolt.

1. Slightly loosen mounting bolt (1) and adjusting bolt (3).

2. Adjust the belt tension with a square drive in the square hole (2).

3. Tighten adjusting bolt (3). Tighten mounting bolt (1).

4. Install the belt guard.

If a new belt is installed, check the belt adjustment again after 30 minutes of engine operation at rated speed.

13. August 2017 by samuel07042012
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3116 and 3126 HEUI Truck Engines Battery Maintenance

Clean/Check Electrolyte Level


1. Remove the fill caps. Maintain the electrolyte level to the bottom of the fill cap openings.

If the addition of water is necessary, use distilled water. If distilled water is not available use clean water that is low in minerals. Do not use artificially softened water.

At the proper charging rate, the batteries should not require more than 30 cc (1 oz) of water per cell per week.

2. Keep the batteries clean.

3. Remove the cable terminals from the battery.

4. Clean the battery terminals and the cable terminals.

5. Attach the cable terminals to the battery terminals. Tighten the cable terminals.

6. Coat the cable terminals and the battery terminals with petroleum jelly or MPGM.

13. August 2017 by samuel07042012
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3116 and 3126 HEUI Truck Engines Alternator – Inspect

Inspect the alternator for loose connections and proper battery charging. Inspect the ammeter gauge during engine operation to ensure the batteries and/or electrical system is performing correctly. Make repairs as necessary. Refer to the Service Manual.

Check the alternator and battery charger for proper operation. If the batteries are properly charged, ammeter reading should be very near zero. All batteries should be kept charged. The batteries should be kept warm because temperature affects the cranking power. If the battery is too cold, it will not crank the engine, even if the engine is warm. When the engine is not run for long periods of time or run for short periods, the batteries may not fully recharge. Ensure the alternator performs properly to charge the battery and to help prevent the battery from freezing.

09. August 2017 by samuel07042012
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3116 and 3126 HEUI Truck Engines Air-To-Air Aftercooler Maintenance

Inspect

Depending on your findings and operating environment, the maintenance interval for cleaning the air-to-air aftercooler may be more frequent.

A reduction in power or response, or an increase in exhaust temperature, may indicate an air leak in the charge air cooler core, a gasket failure, a duct failure, or a leak in the piping.

* Check the front of the aftercooler for inspects, dirt and other debris. Clean the front of the aftercooler when required with a stainless steel brush and soapy water. Clean dirt and debris from between the aftercooler and radiator.
* Inspect all of the air ducting and the gasket connections at each oil change. Constant torque hose clamps should be used to secure the ducting.
* Check all of the welds for cracks. Check the mounting brackets to ensure the mounting brackets are secure and in good condition.
* Examine fins for external damage, dirt, debris, salt corrosion, etc. Use a firm stainless steel brush to remove dirt, debris, salt, etc.
* Use compressed air to clean core blockage due to dirt and debris.

NOTE: Whenever air-to-air aftercooler parts are repaired and/or replaced, a leak test is highly recommended. Refer to SEHS8622, Using the FT-1984 Air-To-Air Aftercooler Leak Test Group, or consult your Caterpillar dealer for assistance.

09. August 2017 by samuel07042012
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