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How to Replace Coolant Overflow Tank 02-09 Toyota 4Runner

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  1. step : Removing the Coolant Overflow Tank (0:20)
    • Disconnect the coolant overflow hose from the radiator fill neck
    • Remove the three 10 mm mounting bolts
    • Remove the coolant overflow tank
  2. step : Installing the Coolant Overflow Tank (1:44)
    • Set the coolant overflow tank in position
    • Install the three 10 mm bolts to secure it
    • Connect the overflow tank hose to the radiator fill neck

Hey, friends. It's Len here, from 1A Auto. Today we're going to be working on our 2006 Toyota 4Runner and I want to show you how to remove and install a coolant overflow tank. If you need any parts, check us out, 1aauto.com. Thanks.

Okay. So we have a clear view of our overflow tank here. Something you want to keep in mind is the coolant is a chemical, so you want to make sure you have hand protection on, super important. We're going to make sure we have a rag here and that's just to collect any coolant that might come dripping down when I remove this hose.

I'm going to pull this directly off the radiator. There we are, just let the coolant go back down in there. I'm going to leave the cap on, just so nothing comes splashing out in case things start moving around on us here. You're going to notice that there's three mounting bolts. There's one right here, there's one right up here, and then there's one all the way over on this side. We're going to remove all three of these bolts and then we'll continue. Bolt number one, set that aside. Bolt number two, same as the first. I'm holding my jug now, just so it can't go anywhere. Bolt number three, same as the other two. All right. Now we're just going to grab this, bring it straight up and here's our coolant overflow tank.

All right. So it's time for our install. I'm just going to bring it right down in here. Set it just down like this and I'll put this hose on for now, just so it's not going to leak out anywhere. Grab one of my mounting bolts, you can start with any hole you'd like. I'm just going to start it in and I'm not going to tighten anything down until I have all three of these bolts started. That's very important, only in case you have to start moving things around a little bit, you'll still have some wiggle room to line up the bolt holes. All right. Now that all three are started, let's snug them up. Start down here, that feels pretty great. That feels awesome. Now if you made any mess, just take your rag, clean it up. Last thing we want is any coolant getting on the ground. This looks great. Down the road we go.

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Tools needed for replacement:

    Ratchets & Related

  • Ratchet

  • Sockets - Metric

  • 10mm Socket


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