Enter the characters you see below
Sorry, we just need to make sure you're not a robot. For best results, please make sure your browser is accepting cookies.
Type the characters you see in this image:
Try different image
Conditions of Use Privacy Policy
© 1996-2014, Amazon.com, Inc. or its affiliates
dewgubbe
Subject: 3406E oil cooler replacement |
Northeast Nebraska
Sat outside over night got to bout 2 degrees, had pretty good spot on the concrete of coolant below it. Its leaking at the front seem of the cooler. Leak seemed to stop once it warmed up.
Planning on replacing the cooler myself. Looks pretty straight forward. Any tips?
It looks like it might not come out the bottom because of clearance to the frame. If that is the case, I would need to remove the exhaust manifold and turbo. Anyone know for sure?
Thanks
SSGSubject: RE: 3406E oil cooler replacement |
NW ND
I have a C-15 in 01 Pete. Mine has done that several times over the years and I take it to cat shop. They test cooler and replace the orings since that's all it takes. College has always tested good. Never done it myself. 4WDSubject: RE: 3406E oil cooler replacement |
NE part of SW Iowa
I wish you had a picture for us to look at, of the actual truck application; but this may work going rearward. = you would leave the "Front bonnet" bolted to water pump.
You still would remove the adapter, that has 2 O-rings on it, at that joint. (by Front bonnet)
(3406E_Caterpillar_in paint program.jpg)
Attachments
----------------
Subject: RE: 3406E oil cooler replacement |
Northeast Nebraska
Yes, I think I will have enough room to take it out in pieces like that.I'm assuming just clean the o-ring grooves with a wire wheel, clean up good, lubricate the o-rings with petroleum jelly and slide back together?
4WDSubject: RE: 3406E oil cooler replacement |
NE part of SW Iowa
dewgubbe - 1/29/2018 19:48 Yes, I think I will have enough room to take it out in pieces like that.
I'm assuming just clean the o-ring grooves with a wire wheel, clean up good, lubricate the o-rings with petroleum jelly and slide back together?
Some advice:
A: For cleaning those O-ring grooves, you can take a 2 ft piece of emery paper(of a roll), and "rip it length-wise" = gives you a thin long strip, to get the emery paper down inside the metal grooves, for cleaning purposes. {Sanding back and forth using 2 hands, with CAT part snugged in a vise.} Note: we had a glass-bead machine, so that was our short-cut procedure, for cleaning grooves.
B: Make sure to cover the oil holes, with clean rags/towels, on top of that oil filter base unit; BEFORE you clean that Front oil cooler bonnet, with wire wheel and finish sanding/smoothing with a small pad of emery paper = you want those o-ring surfaces pretty smooth, AND get the taper, also. = the parts, with new O-rings, push together "hard enough", and you don't want to damage your new O-rings.
C: When you have parts together and back on engine, but bolts are still slightly loose, you will have to slowly tighten the Horizontal 4 bolts, at rear oil cooler bonnet, while slowly snugging the lower oil cooler mounting bolts (vertically from the bottom) = You need to do this, so the new rear O-ring can stay "centered" in its bore and seal properly.
Just do a little tightening, at a time, top, then bottom, then top again, then bottom again, etc.etc. and it should work out fine. (Don't need to be too critical of the front, because that older engine uses that 2 O-ring adapter, that can compensate for some unevenness.)
[don't forget to buy 2 O-rings for that oil filter base, also; where the oil cooler mounts to it.]
pta280ser3Subject: RE: 3406E oil cooler replacement |
NENE
I've replaced those O'rings through the years on A and B series 3406's. I've always used John Deere sleeve soap or dawn dish soap to lubricate the O-rings. Also after you clean up sealing areas with wire wheel, use some finer grit emery cloth to smooth things up before installation. Good Luck! 4WDSubject: RE: 3406E oil cooler replacement |
NE part of SW Iowa
I should warn you;
Normally, not all of the coolant will drain out of oil cooler area, after you drain lower radiator hose; so when you remove that rear oil cooler bonnet, expect to have more antifreeze come out.
Subject: RE: 3406E oil cooler replacement |
Northeast Nebraska
Thanks everyone, especially 4wdHoping to tackle this job end of the week.
Maybe if everything goes perfect I'll tackle the infamous 3406 front cover leak
jeff gordonSubject: RE: 3406E oil cooler replacement |
Mather, Manitoba
My one mechanic said just to fill it up. Will quit dripping once warms up.
Edited by jeff gordon 1/29/2018 21:18
(C833631.jpg)
Attachments
----------------
Subject: RE: 3406E oil cooler replacement |
halfway between Lapeer and Port Huron, MI
If it's just leaking out the front where the adapter slides in just re-ring it no need to remove or change the whole cooler. I've had to replace the orings on a couple of ours for the same thing. 4WDSubject: RE: 3406E oil cooler replacement |
NE part of SW Iowa
Because you mentioned a newer engine, C15; this may apply to your engine.
(cat_in paint program.jpg)
Attachments
----------------
Subject: RE: 3406E oil cooler replacement |
Mather, Manitoba