Usage:
(4)Fan Pulley Bearing
Lubricate 1 fitting
Check all belts for cracks and wear. Replace belts in sets only to ensure even wear.
(5)Cooling System
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At Operating Temperature, engine coolant is hot and under pressure. Steam can cause personal injury. Check coolant level ONLY when engine is stopped and radiator cap is cool enough to touch with your hand. Remove filler cap slowly to relieve pressure. Cooling System Conditioner contains alkali. Avoid contact with skin and eyes to prevent personal injury. |
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- 1. Clean radiator fins.
- 2. Inspect condition of the radiator hoses.
- 3. Tighten hose clamps as necessary.
(6)Coolant Conditioner Group Element-If Equipped
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At Operating Temperature, engine coolant is hot and under pressure. Steam can cause personal injury. Check coolant level ONLY when engine is stopped and radiator cap is cool enough to touch with your hand. Remove filler cap slowly to relieve pressure. Coolin System Conditioner contains alkali. Avoid contact with skin and eyes to prevent personal injury. |
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All water is corrosive at engine operating temperature. Use either Caterpillar Cooling System Conditioner liquid, or the coolant conditioner element to treat either plain water or ethylene glycol anti-freeze solution. NEVER use both the liquid cooling system conditioner and the coolant conditioner element at the same time. Do not use Caterpillar Cooling System Conditioner or Coolant Conditioner Elements with Dowtherm 209 Full-Fill coolant. |
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Close both inlet and outlet valves (turn clockwise to close) before removing the element to avoid coolant loss. |
- 1. Close the inlet valve (A) and outlet valve (B). Turn clockwise to close both valves.
- 2. Remove the coolant conditioner element. Discard element.
- 3. Clean the filter mounting base. Make certain all of the old filter gasket material is removed.
- 4. Use only Caterpillar Part Number 9N3368 as a replacement element.
- 5. Coat the seal of the element with a thin film of clean engine oil.
- 6. Install and turn the element until the seal contacts the base, then tighten 3/4 turn more.
- 7. Open the inlet valve (A) and the outlet valve (B).
- 8. Start the engine and check for leaks.
(7)Engine Air Intake
The engine may be equipped with a dry-type or an oil bath air cleaner. Service the air cleaner at regular intervals determined by dust conditions.
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NEVER SERVICE AIR INTAKE SYSTEM WITH THE ENGINE RUNNING. |
Dry-type Air Cleaner
- 1. Loosen and remove the retaining bolts and end cover.
- 2. Remove and inspect the element. If the element is damaged, install a new element.
- 3. Remove any dirt or debris which has accumulated on the bottom or sides of the filter housing. Clean the filter element using one of the methods covered in the topic, CLEANING AIR CLEANER ELEMENTS.
- 4. Install the clean element in the filter housing.
- 5. Install the cover. Tighten the retaining bolts.
Oil Bath-type Air Cleaner
- 1. Loosen the retaining clamp thumb screw and remove the oil pan from the air cleaner.
- 2. Clean the bottom of the oil pan with clean nonflammable solvent. Fill the pan with clean engine oil to the level indicated by the mark on the side of the oil pan.
- 3. Install the oil pan and tighten the retaining clamp.
Cleaning Air Cleaner Elements
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When using pressure air, wear protective face shield and protective clothing. Use 30 psi (205 kPa) maximum pressure air for cleaning purposes. |
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Do not clean element by bumping or tapping. Do not use elements with damaged pleats, gaskets or seals. |
Dry type air cleaner elements can be cleaned with either Pressure Air, Water or Detergent.
Have spare elements on hand to use while cleaning used elements.
Pressure Air-30 psi (205 kPa) Maximum
- 1. Direct air inside the element along the length of the pleats.
- 2. Direct air outside the element along the length of the pleats. Direct air inside the element along the length of the pleats. Inspect the element.
Water-40 psi (280 kPa) Maximum
- 1. Direct water inside the element and along the length of the pleats.
- 2. Direct the water outside the element along the length of the pleats. Rinse, air dry thoroughly and inspect the element.
Detergent
- 1. Wash the element in warm water and nonsudsing household detergent.
- 2. Rinse the element with clean water.
- 3. Air dry the element thoroughly and inspect it.
Inspecting Element
- 1. Insert a light inside of the clean and dry element, and inspect it. Discard the element if rips or tears are found.
- 2. Wrap and store good elements in a clean, dry place.
(8)Batteries
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Batteries give off flammable fumes that can explode. Do not smoke when observing electrolyte level. Electrolyte is an acid and can cause personal injury if it contacts skin or eyes. |
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Clean the top of the batteries. Remove the filler caps and inspect the eletrolyte level. Maintain the electrolyte level to the bottom of the filler openings. Install the filler caps.
At proper charge rate, batteries will not require more than 1 ounce (30 cc) of water per cell per week.
(9)Alternator and Fan Drive Belts
- 1. Inspect the condition and the adjustment of the alternator belts (A), and the fan drive belts (B).
- 2. Replace the belts in sets if either belt is frayed or cracked.
- 3. Apply 25 lb. (110 N) force midway between the pulleys. Deflection should be 1/2 inch (1 cm).
To Adjust Fan Drive Belts:
- 1. Loosen the mounting bolts (A) and adjust with the adjusting bolt (B).
- 2. When properly adjusted, tighted the mounting bolts (A).
To Adjust Alternator Belts:
- 1. Loosen the mounting bolt (A) and the locknut (B).
- 2. Adjust the alternator belts by either tightening or loosening the adjusting nut (C).
- 3. When the alternator is properly adjusted, tighten the locknut (B) and the mounting bolt (A).
(10)Engine Crankcase
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Hot oil or components can cause personal injury if they contact skin. Use caution when draining oil or changing filters. |
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The truck must be level, the parking brake applied, engine stopped, and the oil warm.
- 1. Remove the crankcase drain plug and allow the oil to drain.
- 2. Remove the drain plug from the BrakeSaver, if equipped.
- 3. Remove and discard the oil filter.
- 4. Clean the filter base housing. Be sure all of the old seal is removed.
- 5. Coat the seal of a new element with clean engine oil.
- 6. Install the new filter by hand. Turn the filter 3/4 turn after the seal contacts the base.
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Do not overtighten the filter. |
The filter may have index marks spaced 90° apart. These marks should be used when tightening the new filter an additional 3/4 turn.
- 7. Install the drain plug. Fill the crankcase to the FULL mark on the dipstick. See the REFILL CAPACITIES CHART in the ENGINE SPECIFICATIONS section. Start the engine and inspect for leaks.
Remote mounted or auxiliary filters require additional oil. A 12 qt. supplemental oil filtration system extends the normal interval for CD oils to 16,500 miles.
(11)Cooling System-Add Cooling System Conditioner if Conditioner Element is not Available
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At Operating Temperature, engine coolant is hot and under pressure. Steam can cause personal injury. Check coolant level ONLY when engine is stopped and radiator cap is cool enough to touch with your hand. Remove filler cap slowly to relieve pressure. Cooling System Conditioner contains alkali. Avoid contact with skin and eyes to prevent personal injury. |
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The truck must be level, the parking brake applied, and the engine stopped.
On a new or reconditioned engine: Add enough Caterpillar Cooling System Conditioner, or equivalent, so that the cooling system will have a 3% to 6% concentration of conditioner. Add 1 pint (.50 liters) for each 4 gal. (15.14 liters) of coolant, to obtain a 3% concentration.
Every 12,500 Miles or 250 Service Hours thereafter: Add 1 pint (.50 liters) for each 16 gal. (60.50 liters) of coolant in the system. This will maintain the required 3% concentration of conditioner.
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Do not use Caterpillar Cooling System Conditioner with Dowtherm 209 coolant. |
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All water is corrosive at engine operating temperature. Use either Caterpillar Cooling System Conditioner liquid, or the coolant conditioner element to treat either plain water or ethylene glycol antifreeze solution. NEVER use both the liquid cooling system conditioner and the coolant conditioner element at the same time. Do not use Caterpillar Cooling System Conditioner or Coolant Conditioner Elements with Dowtherm 209 Full-Fill coolant. |
- 1. Loosen the radiator cap slowly to relieve pressure, and remove radiator cap.
It may be necessary to drain enough coolant to allow for the addition of conditioner.
- 2. Add Caterpillar Cooling System Conditioner.
- 3. Inspect the radiator cap gaskets. Replace the cap if the gaskets are damaged.
- 4. Install the radiator cap.