Auxiliary drive belts
Due to the nature of use and the material of which drive belts are made, they are subject to wear over time, so they must be checked regularly.
Examination
1. With the engine off, inspect the entire length of the drive belts for cracks or splits. You will need to rotate the engine crankshaft (with crank handle) in order to move the sections of the belt from the pulleys and carefully inspect it. Twist the belt to inspect both sides of the belt. Also inspect the belt for loose fibers and frayed areas that look like glossy 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
Unscrew the mounting bolts and remove the protective shield from the bottom of the engine.
Alternator drive belt
Removal and installation
1. Remove the radiator cooling fan following the instructions in subsection 4.3.
2. Remove the power steering pump or air conditioning compressor drive belt.
3. Loosen the lower alternator mounting bolt and adjusting bolt locknut, then loosen the adjusting nut to loosen the drive belt tension. Remove the drive belt from the pulleys and remove it from the engine.
4. Install the new belt in place and install it on the pulleys. Using the adjusting nut, adjust the tension of the drive belt so that when pressing with your thumb on the drive belt in the middle of the longest section, it sags no more than 10 mm. After the drive belt is properly tensioned, tighten the alternator lower mounting bolt to the correct torque, then tighten the adjuster locknut to the correct torque.
5. Reinstall the power steering pump or air conditioning compressor drive belt.
6. Install the radiator cooling fan following the instructions 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 clip to the pump bracket.
3. Loosen the lock nut, then loosen the adjusting nut to take the tension off the drive belt. Remove the drive belt from the pulleys and remove it from the engine.
4. Install the new drive belt in place and install it on the pulleys.
5. Install the air conditioning compressor drive belt (if it is needed) and pull it up.
6. Tighten the drive belt by turning the adjusting nut so that when you press your thumb on the drive belt in the middle of the longest section, it sags no more than 10 mm. After the drive belt is tensioned, tighten the pinch bolt and pump mounting bolts to the correct torque, then tighten the locknut to the correct torque. Install the motor guard and securely tighten its mounting bolts.
Air conditioning compressor drive belt
Removal and installation
1. Loosen the compressor mounting bolts and loosen the bolt holding 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 install it on the pulleys. Tighten the belt by turning the adjusting nut so that when you press your thumb on the drive belt in the middle of the longest section, it sags no more than 10 mm. Once the drive belt is properly tensioned, tighten the pinch bolt, compressor mounting bolts, and locknut to the correct torque. Check and, if necessary, adjust the tension of the power steering pump drive belt. Install the protective shield on the bottom of the motor and securely tighten the mounting bolts.
Idle speed and exhaust emissions
Conventional tachometer (crankshaft speed sensor), which operates on pulses 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 purchase a tachometer or contact a specialist.
Examination
1. Check that the accelerator cable is properly adjusted.
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 locknut and turn the idle speed adjustment screw located on top of the injection pump. When the idle speed is properly adjusted, securely tighten the locknut.
4. Stop the engine and (if it is needed) disconnect the tachometer when the test is complete.
Check of system of release of the fulfilled gases
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 engine mating surfaces, gaskets and seals for signs of coolant or oil leakage. Pay particular attention to the areas around the cylinder head cover, cylinder head, oil filter and oil pan connections. Do not forget that after a certain time a small amount of oil may begin to seep through the connections. This is normal. If you find a serious leak, replace the seal or gland (see subsection 9.1.5 and subsection 9.2.5).
2. Also check the reliability and condition of all tubes and hoses of the engine, as well as tubes and hoses of the brake system and tubes of the power system. Check that all clamps and brackets are in place and in good condition. If the clamps are broken or missing, then the hoses, tubes or wires will dangle and fray against the surroundings, which can lead to more serious problems in the future.
3. Carefully check the radiator hoses and stove hoses along their entire length. Replace hoses that are cracked, swollen, or worn. Cracks are more visible when the hose is compressed. Pay close attention to the hose clamps that secure the hoses to the cooling system components. Hose clamps can pinch or puncture hoses, causing coolant to leak. If twist-on collars were used, it is recommended to replace them with standard tie-down collars. Warning! The quickest way to measure brake pad thickness is through the hole on the front brake caliper
4. Check all elements of the cooling system (hoses, connections, etc.) for leaks.
5. If any of the components of the cooling system is defective, replace it or the gasket, following 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 special attention to the connection between the filler neck and the fuel tank. Sometimes the rubber filler tube or connecting hose can leak due to loose mounting clamps or worn rubber.
7. Carefully inspect all rubber hoses and metal pipes coming from the fuel tank. Check the connections for tightness and check that there are no worn hoses, broken pipes or other damage. Pay special attention to vent tubes and hoses, which often wrap around the filler neck and can be kinked or broken. Check the condition of the pipes all the way to the front of the car. Replace damaged sections if necessary. While the car is raised, take the opportunity to also check the pipes and hoses of the brake system located under the bottom of the body.
8. In the engine compartment, check that all fuel, vacuum, and brake hoses and tube connections are securely fastened, and check that the hoses are not kinked, frayed, or damaged.
Corrosion test
This operation must be entrusted to specialists. It includes a thorough inspection of the surface of the body and the bottom for damage and corrosion.
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