How to change a fuel/water separator type fuel filter

Just a quick video of how to change a fuel/water separator. There was still people in the shop at the time, so the audio is pretty quiet. My coworkers don't really understand the YouTube thing, so it's best to not let them in on what I'm doing. This type of fuel filter is found on a lot of trucks. Sometimes it's used in conjunction with a spin-on fuel filter and sometimes it's the only fuel filter (Con-Way only has this type of filter on their trucks). The benefit of this type of filter is being able to see when it needs to be changed. With the transparent bowl, you can see the fuel level rise as the filter gets clogged. When the fuel level gets to the top of the filter, it's time to change it. The other benefit of this set up is that there's usually coolant lines connected to the base unit, which keeps the fuel warm. The only drawback to this is that you need the collar wrench to get the thing apart. Well, you don't NEED the collar wrench, but it makes the job much easier. I bought my collar wrench from an International dealer when I was on a service call and it only cost $20. Thanks for watching.

Category:

Autos & Vehicles

Tags:

• diesel
• mechanic
• how
• to
• change
• fuel
• filter

[truckinjeff]

Little advice for everyone. Don't tighten the vent cap with the wrench. One of my biggest pet pieves is breaking the tabs off the vent cap because the last person to change the filter overtightened the cap. Hand tighten only until snug.

Also make sure the spring is in place in the dome. Without it in there, the fuel filter will come off it's seal and may leave all the expensive injection compents at risk of failure from dirt contamination.

[hopper1]

@truckinjeff From my experience, those tabs are broken more from people using pliers on the cap than the proper wrench. However, I do agree with you that hand tight is enough, but my wrists just aren't what they used to be, so I have to use the wrench to snug the cap down. Also, since I can't grip things as well as I used to, I use filter pliers to snug down spin on filters. I should mention that I don't tighten spin on filters however I want, I actually follow the instructions on the filter.

[ganda2022]

i got used 67Tvolvo670 for 10 days from dealer and everything was ok, now facing a problem with fuel-water separator filter. just drove first 100 miles and filter showing full of water, drained it twice with the gap of 50 miles. now again filter with full of water. what can be the problem-should i keep draining it, or if it is serious problem then go to to dealer to fix it. please suggest.

[hopper1]

@ganda2022 Are there coolant hoses connected to the filter housing? Sometimes coolant hoses are connected to the filter housing to act as a fuel heater. I've seen the housing crack and let coolant into the fuel part. You could also have water getting in at the fuel tank somewhere.

[hopper1]

@ganda2022 Also make sure the parts on the filter housing are tight (lock rings for the bowl, the fill cap, fuel line connections etc.)and check the seals to make sure they aren't damaged. Are you sure it's water? With this type of filter the fuel level rises as the filter clogs. Once the fuel level gets over the filter it's time to change it. You may simply need a filter change. 

[domepiece604]

hey hopper 3rd comment dont noe if previous worked. anyways how much diesel fuel do you fill it with after new installation. im a diesel mechanic apprentice and appreciate all your work related videos, really helps me thanks.

[hopper1]

Add fuel into the bowl until it is just above the bottom of the filter. About 1/2"

[Tater314]

@hopper1 If your not making 50 grand a year, your working at the wrong shop!!!

[ganda2022]

thanks, according to dealer, there is water in fuel tank-may be moisture. tanks heve drained atready, filter changed, now so far is good.

[hopper1]

Not as much as you'd expect.