Mercedes Mullins
Removing the fuel tank from a BMW K750 motorcycle is a complex process that requires careful attention to detail. Before beginning, it is important to siphon as much fuel as possible from the tank to make it easier to handle. The next steps involve disconnecting the fuel lines and power connectors, removing bolts and clips, and carefully lifting the tank away from the bike. It is crucial to keep track of various components, such as rubber inserts, aluminium sleeves, and washers, to ensure they are properly reinstalled during reassembly. Additionally, it is recommended to place a clean paper towel under the fuel lines to check for any fuel leakage and to be cautious when starting the tank mounting bolts to prevent damage to the threads in the frame. One should also pay attention to reconnecting all hoses and harnesses during reassembly to avoid issues with starting the bike.
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What You'll Learn
Loosen the hose clamps and pull the fuel lines' hoses loose
To loosen the hose clamps and pull the fuel lines loose, follow these steps:
First, loosen the two hose clamps where the fuel lines connect to the tank. You can use a golf tee to plug the lines while they are apart. If you do this, no gas will leak from the unplugged spigots on the tank. However, you may still want to place a folded paper towel or a rag underneath the fuel lines to catch any spills.
Next, pull the fuel lines loose. Be careful not to nick the O-rings, as this can cause fuel leakage. Also, make sure to hold the release tab until the disconnect is completely apart to prevent the sharp edge of the release tab from cutting into the O-rings.
Before pulling the tank off, you will need to disconnect the fuel pump electrical connector and the two quick-disconnects on the fuel lines. It is common for some or all of the rubber inserts, aluminium sleeves, and thin rubber washers associated with the rear mounts to fall out when you pull the tank off, so keep close track of these parts.
Finally, with the rear of the tank lifted clear of the cross piece, move the tank rearward and upward. It is easiest to remove the tank when it is not full of fuel.
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Disconnect the electrical connector
Disconnecting the electrical connector is a crucial step in removing the fuel tank from a BMW K750 motorcycle. Here is a detailed guide on how to do this:
Before disconnecting the electrical connector, it is important to loosen the two hose clamps where the fuel lines connect to the tank and pull the hoses loose. This will give you better access to the electrical connector. You may also want to siphon out as much fuel as possible beforehand, as it is easier to work with a near-empty tank.
Now, to disconnect the electrical connector:
- Locate the electrical connector: The electrical connector is usually on the line at the right rear of the tank or the back of the tank. It is often connected to a wire that is woven around the tank.
- Disconnect the electrical connector: Carefully disconnect the electrical connector by gently pulling or detaching it from the tank. Ensure that you handle it with care to avoid any damage.
- Weave or move the wire: Once the electrical connector is disconnected, weave or move the wire attached to the tank so that it is free and clear when the rear of the tank is raised. This step ensures that the wire does not get caught or tangled during the tank removal process.
- Secure the wire: If needed, you can temporarily secure or tie the wire in a safe position to prevent it from interfering with the rest of the fuel tank removal process. Make sure it is away from any moving parts or areas that may cause damage to the wire.
Remember to pay attention to the specific model of your BMW K750, as the location of the electrical connector and the procedure may vary slightly. Always refer to a reliable service manual or seek advice from a BMW motorcycle specialist if you are unsure about any steps.
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Remove C clips and bolts
Removing the C-clips and bolts is a crucial step in detaching the fuel tank from a BMW K750 motorcycle. Here is a detailed, step-by-step guide to accomplishing this task effectively:
Locate the C-clips and bolts: Begin by identifying the C-clips and bolts that secure the fuel tank in place. On the BMW K750, you will find two C-clips at the rear of the tank, specifically on the vertical posts under the crossbar. Additionally, there are bolts located at the rear of the tank, as well as on either side.
Prepare the workspace: Before initiating any removal process, it is essential to take precautionary measures. Place a clean, folded paper towel or a rag underneath the fuel lines to catch any fuel spillage. This step is crucial for maintaining a clean and safe workspace.
Loosen the C-clips: Using the appropriate tools, carefully loosen and remove the two C-clips at the rear of the tank. These C-clips play a vital role in holding the tank in place, so it is important to ensure they are properly removed.
Remove the bolts: Proceed to remove the bolts that secure the fuel tank in place. This includes the bolts located at the rear of the tank and those on either side. When removing the bolts, it is crucial to keep track of the rubber inserts, aluminum sleeves, and thin rubber washers associated with the rear mounts. These components may fall out during the removal process, so handle them with care and set them aside in a safe place.
Stabilize the tank: As you remove the C-clips and bolts, you may need to stabilize the fuel tank to prevent it from shifting or falling unexpectedly. Carefully lift the rear of the tank a few inches to gain better access to the mounting bolts and C-clips. If needed, place a small block of wood or a similar object to support the tank and hold it in place temporarily.
By carefully following these steps, you will be able to successfully remove the C-clips and bolts securing the fuel tank of your BMW K750. Remember to work cautiously and refer to the motorcycle's service manual if you have any doubts or concerns during the process.
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Lift the rear of the tank
Lifting the rear of the tank is one of the final steps to removing the fuel tank from a BMW K750. Before lifting the rear of the tank, you must first loosen the two hose clamps where the fuel lines connect to the tank and pull the hoses loose. Disconnect the electrical connector on the line at the right rear of the tank. Remove the two C clips on the vertical posts under the crossbar at the rear of the tank.
Now, you can lift the rear of the tank. First, lift the rear of the tank a few inches. Verify that there are or are not vent and drain hoses attached to stub pipes on the right side of the bottom of the tank. Pull off the stubs if they are present. With the rear lifted clear of the cross piece, you can now move the tank rearward and upward. It is easiest when the tank is not full.
One user suggests that, before you pull the tank back/off the frame, you should keep close track of the rubber inserts, aluminium sleeves, and thin rubber washers associated with both rear mounts. When you pull the tank back/off the frame, it is common to have some or all of these bits fall out.
Another user suggests that, before lifting the rear of the tank, you should disconnect the power line to the tank. They also suggest that you remove the left kneepad and glovebox/or radio box.
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Disconnect the fuel pump
Disconnecting the fuel pump is a crucial step in removing the fuel tank from a BMW K75. Here is a detailed, step-by-step guide on how to do it:
Firstly, it is important to siphon as much fuel as possible from the tank to make the process easier and reduce the risk of fuel leakage. Next, loosen the two hose clamps where the fuel lines connect to the tank and pull the hoses loose. This will involve disconnecting the two fuel lines, which can be plugged temporarily with golf tees or pipe caps to prevent leakage.
Now, you will need to disconnect the electrical connector on the line at the right rear of the tank. This step requires caution, as there is limited finger room, and it is important to hold the release tab until the connector is completely disconnected. With the help of a paper towel or a rag, you can absorb any spilled fuel during this process.
Additionally, there may be two small lines connected to nipples on the right rear side of the tank, which are the overflow and tank-vent lines. These lines usually direct into a funnel arrangement clipped to the frame. If they are connected, it is recommended to disconnect them as well.
Finally, before removing the tank entirely, ensure that you have accounted for all the necessary connections, including the fuel pump at the bottom, to avoid any issues when reassembling. Marking the connections with bright streamers or stickers can be a helpful reminder.
By carefully following these steps, you will successfully disconnect the fuel pump and be well on your way to removing the fuel tank from your BMW K75.
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Frequently asked questions
Here is a step-by-step guide to removing the fuel tank from a BMW K75:
- Loosen the two hose clamps where the fuel lines connect to the tank. Pull the hoses loose.
- Disconnect the electric connector on the line at the right rear of the tank.
- Remove the two C clips on the vertical posts under the crossbar at the rear of the tank.
- Open the seat on the standard model or remove the seat on the low-seat model.
- Lift the rear of the tank a few inches and check for vent and drain hoses.
- Pull off any hoses and move the tank rearward, upward, and away from the bike.
It is important to ensure that the fuel tank is not full before attempting to remove it. Siphon out as much fuel as possible beforehand to make the process easier. Additionally, place a clean folded paper towel under the fuel lines to check for any fuel leakage.
It is easy to forget to reconnect a hose or harness when reinstalling the fuel tank. Take note of all the hoses and connectors that you disconnect during the removal process to ensure that you reconnect them properly. Pay close attention to the rubber inserts, aluminium sleeves, and thin rubber washers associated with the rear mounts, as they may fall out when removing the tank.
Yes, here are a few tips:
- Use golf tees to plug the fuel lines while the tank is apart.
- Disconnect the fuel pump electrical connector and the quick-disconnects on the fuel lines before lifting the tank.
- When undoing the fuel line quick disconnects, hold the release tab until the disconnect is completely apart to prevent damage from the sharp edge.
