After 15,000 km or 12 months (Opel Omega B)

Contents: Auxiliary drive belts ⬇ Idle speed and exhaust toxicity ⬇ Hoses and connections ⬇ Checking for corrosion ⬇

Auxiliary drive belts

Due to the nature of use and the material from which drive belts are made, they are subject to wear over time and therefore need to be checked regularly.

Examination

1. With the engine off, inspect the drive belts along their entire length for cracks or delamination. You will need to turn the engine crankshaft (using the crank handle) to remove sections of the belt from the pulleys and inspect it carefully. Twist the belt to inspect both sides of the belt. Also inspect the belt for loose fibers and frayed areas that look like shiny spots. Check the pulleys for cracks, deformation, or corrosion.

2. If the drive belt is worn or damaged, it must be replaced.

3. Check the tension of all drive belts and adjust if necessary.

Replacement

Loosen the mounting bolts and remove the protective shield from underneath the engine.

Generator drive belt

Removal and installation

1. Remove the radiator cooling fan according to the instructions provided in subsection 4.3.

2. Remove the power steering pump or air conditioning compressor drive belt.

3. Remove the lower alternator mounting bolt and adjusting bolt lock nut, then remove the adjusting nut to relieve tension on the drive belt. Remove the drive belt from the pulleys and remove it from the engine.

4. Install the new belt in place and place it on the pulleys. Using the adjusting nut, adjust the drive belt tension so that when you apply pressure with your thumb on the drive belt at the center of its longest section, the belt deflects no more than 10 mm. Once the drive belt is properly tensioned, tighten the lower alternator mounting bolt to the specified torque, then tighten the adjuster lock nut to the specified torque.

5. Install the power steering pump or air conditioning compressor drive belt into place.

6. Install the radiator cooling fan according to the instructions provided in subsection 4.3.

Power steering pump drive belt

Removal and installation

1. If necessary, remove the air conditioning compressor drive belt.

2. Remove the power steering pump mounting bolts and remove the nut and bolt securing the adjusting clamp to the pump bracket.

3. Loosen the lock nut, then loosen the adjusting nut to relieve tension on the drive belt. Remove the drive belt from the pulleys and remove it from the engine.

4. Place the new drive belt in place and install it onto the pulleys.

5. Install the air conditioning compressor drive belt (if necessary) and pull it tight.

6. Tighten the drive belt by tightening the adjusting nut so that when you apply pressure to the drive belt with your thumb at the center of its longest section, it deflects no more than 10 mm. Once the drive belt is tight, tighten the tie bolt and pump mounting bolts to the specified torque, then tighten the lock nut to the specified torque. Install the engine guard and tighten its mounting bolts securely.

Air conditioning compressor drive belt

Removal and installation

1. Remove the compressor mounting bolts and loosen the bolt securing the adjusting nut clamp to the compressor. Loosen the lock nut, then loosen the adjusting nut to relieve tension on the drive belt. Remove the drive belt from the pulleys and remove it from the engine.

2. Install the new drive belt in place and fit it onto the pulleys. Tighten the belt by tightening the adjusting nut until there is no more than 10 mm of deflection when you apply thumb pressure to the drive belt at the center of its longest section. Once the drive belt is properly tensioned, tighten the pinch bolt, compressor mounting bolts, and lock nut to the specified torque. Check and adjust the tension of the power steering pump drive belt if necessary. Install the underbody shield on the engine and tighten the mounting bolts securely.

Idle speed and exhaust toxicity

Tachometer of the usual type (crankshaft speed sensor), which operates on impulses from the ignition system, cannot be installed on a diesel engine. If you think that you cannot adjust the crankshaft speed by ear, then you need to buy a tachometer or contact a specialist.

Examination

1. Check that the accelerator cable is adjusted correctly.

2. Warm up the engine to normal operating temperature and check that the engine idle speed is as specified in subsection 5.2.1.

3. If adjustment is necessary, loosen the lock nut and turn the idle speed adjustment screw located on top of the injection pump. When the idle speed is correctly adjusted, tighten the lock nut securely.

4. Turn off the engine and (if necessary) disconnect the tachometer after completing the test.

Checking the exhaust system

To check the toxicity of exhaust gases, it is necessary to use special equipment, so it is better to entrust this operation to specialists. If it works properly, this check does not need to be performed.

Hoses and connections

Examination

1. Visually inspect the engine mating surfaces, gaskets, and seals for signs of coolant or oil leakage. Pay particular attention to the areas around the joints of the cylinder head cover, cylinder head, oil filter, and oil pan. Remember that after a certain period of time, a small amount of oil may begin to leak through the joints. This is normal. If you find a serious leak, replace the leaking gasket or seal (see subsection 9.1.5 and subsection 9.2.5).

2. Also check the tightness and condition of all engine pipes and hoses, as well as brake pipes and hoses and fuel pipes. Check that all clamps and brackets are in place and in good condition. If clamps are broken or missing, the hoses, pipes or wires will dangle and rub against surrounding elements, which can lead to more serious problems in the future.

3. Carefully inspect the radiator hoses and heater hoses along their entire length. Replace any hoses that are cracked, swollen, or worn. Cracks are more visible if you squeeze the hose. Pay close attention to the hose clamps that secure the hoses to the cooling system components. Hose clamps can pinch or puncture the hoses, causing coolant to leak. If twist-on clamps were used, it is recommended to replace them with standard compression clamps. Warning! The quickest way to measure brake pad thickness is through the hole in the front brake caliper

4. Check all elements of the cooling system (hoses, connections, etc.) for leaks.

5. If any component of the cooling system is defective, replace it or the gasket according to the instructions given in subsection 4.12.

6. With the vehicle raised, inspect the fuel tank and fuel filler neck for punctures, cracks, or other damage. Pay particular attention to the connection between the filler neck and the fuel tank. Sometimes the rubber filler neck tube or connecting hose can leak due to loose clamps or worn rubber.

7. Carefully inspect all rubber hoses and metal tubes coming from the fuel tank. Check for secure connections and check for worn hoses, broken tubes or other damage. Pay particular attention to the vent tubes and hoses, which often wrap around the filler neck and may be pinched or broken. Check the condition of the tubes all the way to the front of the car. Replace damaged sections if necessary. While the car is raised, take the opportunity to also inspect the brake system tubes and hoses located under the body.

8. In the engine compartment, check all fuel, vacuum, and brake hoses and pipe connections for tightness, and check that hoses are not pinched, frayed, or damaged.