Volvo FH Workshop Manuals and Repair Manuals

To adjust the headlights on a Volvo FH, park the vehicle on a level surface facing a wall or garage door approximately 25 feet away. Mark the vertical and horizontal centerlines on the wall at the same height as the headlights. Use the headlight adjustment screws, usually located near the headlight assembly, to align the beams with the centerlines. Adjust the headlights until the upper edge of the light beam is slightly below the centerline and the beams are parallel to each other. It is advisable to consult the vehicle's manual for specific instructions and adjustments based on your Volvo FH model.

To change the engine oil in a Volvo FH, start by draining the old oil from the oil pan using a wrench to remove the drain plug. Then, remove the oil filter and replace it with a new one. Finally, refill the engine with the recommended amount and type of oil, and ensure it is at the correct level using the dipstick. Remember to properly dispose of the used oil at a designated recycling facility.

To check and adjust the tire pressure in a Volvo FH, start by locating the tire pressure information sticker, usually located on the driver's side door jamb or inside the fuel filler flap. Use a tire pressure gauge to measure the pressure in each tire, ensuring they are inflated to the recommended PSI (pounds per square inch) specified in the vehicle's manual or the sticker. If adjustments are needed, use an air compressor to add or release air until the desired pressure is reached. Regularly monitoring and maintaining proper tire pressure is crucial for safety, fuel efficiency, and tire longevity.

To check the brake fluid level in a Volvo FH, locate the brake fluid reservoir, usually located on the driver's side of the engine compartment. Ensure the vehicle is parked on a level surface. Remove the cap from the reservoir and visually inspect the fluid level, which should be between the minimum and maximum marks indicated on the reservoir. If necessary, add the recommended type of brake fluid to bring it up to the correct level. It is crucial to use the specified brake fluid to maintain proper braking performance and prevent damage to the braking system.

To check the transmission fluid level in a Volvo FH, start the engine and allow it to idle for a few minutes to warm up the transmission fluid. Park the vehicle on a level surface and engage the parking brake. Locate the transmission dipstick, usually located near the firewall in the engine compartment. Pull out the dipstick, wipe it clean, reinsert it fully, and then remove it again to check the fluid level. The fluid level should be within the designated range on the dipstick. If necessary, add the recommended type of transmission fluid through the dipstick tube. It is important to follow the vehicle's manual for the correct procedure and specifications.

If a fuse in your Volvo FH blows, start by locating the fuse box, typically found in the cabin or engine compartment. Refer to the vehicle's manual or the fuse box cover for the specific fuse layout and rating. Using a fuse puller or a pair of pliers, carefully remove the blown fuse and replace it with a new one of the same rating. It is important to identify and address the underlying cause that led to the fuse blowing, as repeated fuse failures may indicate an electrical issue that requires further inspection by a professional.

To replace the cabin air filter in a Volvo FH, locate the cabin air filter housing, which is typically located behind the glove compartment or under the dashboard. Open the housing by removing the clips or screws that secure it. Take out the old cabin air filter and replace it with a new one, ensuring the correct orientation. Close the housing and secure it back in place. Regularly replacing the cabin air filter helps maintain clean air inside the vehicle and ensures proper HVAC system operation.

To replace the fuel filter in a Volvo FH, start by locating the fuel filter assembly, which is typically found along the fuel lines under the vehicle or inside the engine compartment. Ensure the fuel system is depressurized before proceeding. Use a wrench to loosen the fittings or clamps securing the old fuel filter. Carefully disconnect the fuel lines and remove the old filter. Install the new fuel filter, ensuring proper orientation, and reconnect the fuel lines. Finally, tighten the fittings or clamps securely. Regularly replacing the fuel filter helps maintain fuel system performance and protects the engine from contaminants.

To replace the windshield wiper blades on a Volvo FH, start by lifting the wiper arm away from the windshield until it locks into a raised position. Locate the release tab or button on the wiper blade assembly and press or slide it to detach the old blade from the arm. Then, align the new wiper blade with the arm's hook or attachment point and firmly press it in until it clicks into place. Finally, carefully lower the wiper arm back onto the windshield. It is recommended to replace both wiper blades simultaneously for balanced performance.

To reset the service light in a Volvo FH, follow these steps: 1. Turn the ignition key to the 'II' position (do not start the engine). 2. Press and hold the trip odometer reset button. 3. While holding the button, turn the key to the 'I' position (accessory mode) and wait for the service light to start flashing. 4. Release the trip odometer reset button and turn off the ignition. The service light should now be reset. It is important to note that the exact procedure may vary slightly depending on the model year of your Volvo FH, so referring to the vehicle's manual is recommended for precise instructions.

If your Volvo FH won't start, there are several potential causes to consider. First, check the battery and ensure it has sufficient charge and clean terminals. If the battery is fine, inspect the starter motor and ignition system for any faults, such as a faulty ignition switch or a worn-out starter solenoid. Additionally, a clogged fuel filter or a malfunctioning fuel pump can also prevent the engine from starting. If you are unable to diagnose and resolve the issue, it is advisable to consult a professional mechanic for further assistance.

The air filter in a Volvo FH should be replaced at regular intervals to ensure optimal engine performance and fuel efficiency. As a general guideline, it is recommended to replace the air filter every 20,000 to 30,000 miles (32,000 to 48,000 kilometers), or as specified in the vehicle's maintenance schedule. However, if you frequently drive in dusty or polluted environments, it may be necessary to replace the air filter more frequently to prevent clogging and allow proper airflow.

If the engine of your Volvo FH overheats, it is important to take immediate action. Firstly, safely stop the vehicle and turn off the engine to prevent further damage. Allow the engine to cool down completely before attempting any troubleshooting. Check the coolant level and ensure it is within the recommended range. If necessary, add coolant or water to bring it back to the appropriate level. It is recommended to have the cooling system inspected by a professional if the issue persists.

Rough idling in a Volvo FH can be caused by various factors. It is important to first check the spark plugs and ignition system for any issues such as worn-out spark plugs or faulty ignition coils. Additionally, a clogged fuel filter or a malfunctioning sensor, such as the mass air flow sensor or oxygen sensor, can also contribute to rough idling. It is recommended to have a qualified technician diagnose the specific cause using diagnostic tools to accurately identify and resolve the issue.