(Another) Oil Leak Help Request - Defender Source
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  #1  
Old April 19th, 2016, 01:04 PM
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Brian
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(Another) Oil Leak Help Request

!@#$%^&*

Developed a new oil leak this week in the 200Tdi, from the bolt in this close-up picture:



This is on the front of the motor, as seen here:



Oil runs out from behind the bolt whenever the truck is running. It's dripping onto the belts and then being projectiled (made up a new word) back into the engine bay.

So, how bad is it?? Suggestions on what to do before I monkey it up further??

I cannot move the bolt with my hand, but also cannot reach it with any wrenches or sockets I have without removing the hose above it, but I haven't really given it a good go yet.

Any advice would be greatly appreciated!

Thanks - beating the 110 into submission as a DD
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  #2  
Old April 19th, 2016, 01:15 PM
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John B.
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Weird. That is a water pump bolt. Is that not the one that is supposed to be a stud and nut? Pretty sure it should be.

If you remove the fan pulley, you can get a socket on it. I would pull it, add some thread sealant and torque up.

From the manual.
Quote:
Clean the threads of the water pump retaining
bolts and apply Loctite 572 thread lubricant
sealant to the threads of the long bolts which
penetrate into the cylinder block.
And, yes, that is supposed to be a stud and nut.
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  #3  
Old April 19th, 2016, 01:56 PM
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Thanks John - you make it sound so easy.

This motor was just rebuilt, so yeah, about that....I cannot explain why there is a bolt there and not a stud. Good times.

Anyway, wrenching for dummies help please. I enjoy getting in there, just have no idea what I'm doing

OK to drive the truck until this gets fixed (monitoring oil level of course)? Black gold rust prevention dripping on the axle is one thing, but should I be concerned about the belts?

Ummm...how to remove fan pulley? Believe me, I feel dumber for even asking, but it seems like i'll have to remove the shroud and fan to do this? Having a hard time reaching anything in that location or figuring out the step by step process.

If i remove the bolt (that should be a stud) to apply threadlocker sealant, is oil going to come pouring out? I feel even dumberer now, but want to be prepared.

Let the berating being
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  #4  
Old April 19th, 2016, 02:13 PM
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You might actually be able to snug the bolt up with a bent wrench. I'll try and remember to have a look at mine later.

As to removing the pulley... You need to remove the fan. The shroud "can" stay. It helps to have a bent wrench to do it. They make special wrenches for the purpose. It is reverse thread. Clockwise to undo.

Next loosen the alternator belt and remove. And then undo the four bolts on the waterpump pulley.

Some oil may come out, but it wont be a lot. That bolt must go into the oil gallery. You might want to order the proper stud and nut. Probably less chance of leaking and will make future timing belt changes a lot easier. The stud is there as there is no way to fit a bolt with that pulley there.
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Old April 19th, 2016, 05:04 PM
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Thanks John - I'll take another look shortly.
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Old April 19th, 2016, 06:57 PM
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John - in the meantime, just to tighten it down until i can get it all the way out for thread locker sealant, do you think I can remove the short section of hose on top to gain access?

Thanks!
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Old April 19th, 2016, 07:10 PM
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Sure. You will need to drain coolant.

I just had a look and I could get a wrench in there.
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Old April 19th, 2016, 07:24 PM
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Sweet! Is that just a really long regular wrench you're using??
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Old April 19th, 2016, 07:36 PM
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Just a normal wrench. I don't have room for the closed end because of the stud length, but it should work on your bolt.
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  #10  
Old April 19th, 2016, 07:47 PM
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This is the thread sealer I use for all the water pump bolts on my 200tdi. I have a stud there but, when I was rebuilding the block I used this. It's non drying and works for oil and water. Will also keep the bolts/studs from rusting away if you baste it on

http://m.summitracing.com/parts/arp-100-9904


Edit:

If you want to you can remove the fan shroud, fan, and waterpump pulley to access it. You will need to looseen the alt mount bolts and move the alt towards the block to take off the waterpump pulley.
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Old April 19th, 2016, 08:41 PM
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Quote:
Originally Posted by Naplm00 View Post
This is the thread sealer I use for all the water pump bolts on my 200tdi. I have a stud there but, when I was rebuilding the block I used this. It's non drying and works for oil and water. Will also keep the bolts/studs from rusting away if you baste it on http://m.summitracing.com/parts/arp-100-9904 Edit: If you want to you can remove the fan shroud, fan, and waterpump pulley to access it. You will need to looseen the alt mount bolts and move the alt towards the block to take off the waterpump pulley.
Thanks!

Been using the googles to look up some step by step plans.

Think I understand how to remove the fan and loosen the alternator. Still doublechecking the steps on water pump pulley removal.

In the meantime, I want to get it tightened until I have time to do it properly per above.

You guys are a huge help - much appreciated.

------ Follow up post added April 19th, 2016 08:43 PM ------

Quote:
Originally Posted by Red90 View Post
Just a normal wrench. I don't have room for the closed end because of the stud length, but it should work on your bolt.
Thanks again John - appreciate your help and patience!
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  #12  
Old April 19th, 2016, 09:01 PM
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The pulley is just four bolts.
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  #13  
Old April 19th, 2016, 09:06 PM
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10-4. Need to get a bent wrench for the fan, and sealant.
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  #14  
Old April 30th, 2016, 03:54 PM
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Started with the easy fix first...backed the bolt out using a long handled wrench. Applied some thread sealant (did this from underneath the truck) and then tightened back down. Did a quick tightness check on the rest of the water pump bolts followed by a quick spin around the block. So far, no more coolant leak, but a trip around the block certainly isn't enough to verify.

Will be driving around later today and will see if this fix holds up, or if I need to pull the fan and remove the pulley to do a more thorough fix.
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