Front Main Seal leak?
Thread Starter
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Tuned
Joined: Sep 2004
Posts: 470
Likes: 0
From: Aurora Colorado
Front Main Seal leak?
Truck is a 2001 7.3l diesel of course.
Well I found oil all over the front of the truck... on the front axle. tracbar, ect.. I cleaned it all and ran the motor and it appears to be leaking from behind the harmonic balancer (crank pulley). and dripping down to the lower radiator hose.
Is there any other place that oil could come down above the pulley and drain around it?
How hard is the main seals on these to change? Any write ups?
I appreciate all opinions... thanx
Well I found oil all over the front of the truck... on the front axle. tracbar, ect.. I cleaned it all and ran the motor and it appears to be leaking from behind the harmonic balancer (crank pulley). and dripping down to the lower radiator hose.
Is there any other place that oil could come down above the pulley and drain around it?
How hard is the main seals on these to change? Any write ups?
I appreciate all opinions... thanx
Lead Driver
Joined: Oct 2004
Posts: 7,413
Likes: 1
From: Columbia, MO
There is a seal behing (may be in it) the stock balancer that could have gone bad. You should be able to get them from Intl for less than $20 IIRC. You will have to pull the balancer to do it though, which will require a puller. FWIW, if I were in there I'd put a new oil pump in. Once the balancer is off, it's only 4 bolts holding it in there. ITP diesel sells a melling pump, I think they're about $80.
Thread Starter
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Tuned
Joined: Sep 2004
Posts: 470
Likes: 0
From: Aurora Colorado
Ah.. so a CPS will make it look like a bad front main? I know our CPS needs to be replaced.. It will intermitently give us issues. I'll try that first.. I can't say I'm praying for a cheap fix cause the cps and main seal are pretty much the same price, but the cps would be easier to change. 
Post Fiend
Joined: Jun 2006
Posts: 9,714
Likes: 2
From: White Mnt's,New Hampshire
Originally Posted by SpectreZ91
Ah.. so a CPS will make it look like a bad front main? I know our CPS needs to be replaced.. It will intermitently give us issues. I'll try that first.. I can't say I'm praying for a cheap fix cause the cps and main seal are pretty much the same price, but the cps would be easier to change.
Thread Starter
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Tuned
Joined: Sep 2004
Posts: 470
Likes: 0
From: Aurora Colorado
Nice.. 25 bux is good..
I looked at our local parts chain website and they still list it for 149.. I'll go to the dealer for this one.
Do the CPS leak bad enough to have enough oil drip down and then get sprayed everywhere by the fan while it's running?
Truck only has 120k on it.. I'd hate to have to worry about main seals going out.
I looked at our local parts chain website and they still list it for 149.. I'll go to the dealer for this one.
Do the CPS leak bad enough to have enough oil drip down and then get sprayed everywhere by the fan while it's running?
Truck only has 120k on it.. I'd hate to have to worry about main seals going out.
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Post Fiend
Joined: Jun 2006
Posts: 9,714
Likes: 2
From: White Mnt's,New Hampshire
Originally Posted by SpectreZ91
Nice.. 25 bux is good..
I looked at our local parts chain website and they still list it for 149.. I'll go to the dealer for this one.
Do the CPS leak bad enough to have enough oil drip down and then get sprayed everywhere by the fan while it's running?
Truck only has 120k on it.. I'd hate to have to worry about main seals going out.
I looked at our local parts chain website and they still list it for 149.. I'll go to the dealer for this one.
Do the CPS leak bad enough to have enough oil drip down and then get sprayed everywhere by the fan while it's running?
Truck only has 120k on it.. I'd hate to have to worry about main seals going out.
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Thread Starter
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Tuned
Joined: Sep 2004
Posts: 470
Likes: 0
From: Aurora Colorado
The more I think about it.. I remember seeing oil up there by the CPS (but had forgotten that's where it was)
Saw oil all on the timing mark as well.. I didn't really notice until I saw the whole diff and track bar were covered in oil. spots like it had been blown all over the place by the fan..
Wish I was home now to take a better look at it..
Saw oil all on the timing mark as well.. I didn't really notice until I saw the whole diff and track bar were covered in oil. spots like it had been blown all over the place by the fan..
Wish I was home now to take a better look at it..
Thread Starter
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Tuned
Joined: Sep 2004
Posts: 470
Likes: 0
From: Aurora Colorado
Well looked again last night.. Saw oil from behind the crankshaft pulley but couldn't see if it came from up top
I do see oil on the electrical wires that plug into the CPS and on the timing mark indicator.. I'm wondering if it is the cps for sure and dripping down..
Unfortunetly I have to wait to sell a few things.. money got tight and the rear pads are shot.. ended up toasting one of the rotors in the rear.
I do see oil on the electrical wires that plug into the CPS and on the timing mark indicator.. I'm wondering if it is the cps for sure and dripping down..
Unfortunetly I have to wait to sell a few things.. money got tight and the rear pads are shot.. ended up toasting one of the rotors in the rear.
Post Fiend
Joined: Jun 2006
Posts: 9,714
Likes: 2
From: White Mnt's,New Hampshire
a new CPS is only $25 at the dealer now..or get just the oring..write these##"s down and see if napa, IH or some one to cross them...
<TABLE id=DataGrid1 style="BORDER-COLLAPSE: collapse" cellSpacing=0 cellPadding=3 rules=all border=1><TBODY><TR style="FONT-SIZE: smaller; FONT-FAMILY: Verdana, Arial, Helvetica, sans-serif; BACKGROUND-COLOR: #e5e5e5"><TD>CPS</TD><TD>Buna-N</TD><TD>3/32"</TD><TD>13/16"</TD><TD>1"</TD><TD>McMaster-Carr</TD><TD>9555K26</TD><TD>25/$4.22 </TD><TD>117</TD><TD> </TD></TR><TR style="FONT-SIZE: smaller; FONT-FAMILY: Verdana, Arial, Helvetica, sans-serif; BACKGROUND-COLOR: #f2f2f2"><TD>CPS</TD><TD>Viton</TD><TD>3/32"</TD><TD>13/16"</TD><TD>1"</TD><TD>McMaster-Carr</TD><TD>1201T54</TD><TD>25/$9.56</TD><TD>117</TD><TD> </TD></TR><TR style="FONT-SIZE: smaller; FONT-FAMILY: Verdana, Arial, Helvetica, sans-serif; BACKGROUND-COLOR: #e5e5e5"><TD>CPS</TD><TD>Viton</TD><TD>3/32"</TD><TD>13/16"</TD><TD>1"</TD><TD>Grainger</TD><TD>1KFL5</TD><TD>50/$9.17</TD><TD>117</TD></TR></TBODY></TABLE>
<TABLE id=DataGrid1 style="BORDER-COLLAPSE: collapse" cellSpacing=0 cellPadding=3 rules=all border=1><TBODY><TR style="FONT-SIZE: smaller; FONT-FAMILY: Verdana, Arial, Helvetica, sans-serif; BACKGROUND-COLOR: #e5e5e5"><TD>CPS</TD><TD>Buna-N</TD><TD>3/32"</TD><TD>13/16"</TD><TD>1"</TD><TD>McMaster-Carr</TD><TD>9555K26</TD><TD>25/$4.22 </TD><TD>117</TD><TD> </TD></TR><TR style="FONT-SIZE: smaller; FONT-FAMILY: Verdana, Arial, Helvetica, sans-serif; BACKGROUND-COLOR: #f2f2f2"><TD>CPS</TD><TD>Viton</TD><TD>3/32"</TD><TD>13/16"</TD><TD>1"</TD><TD>McMaster-Carr</TD><TD>1201T54</TD><TD>25/$9.56</TD><TD>117</TD><TD> </TD></TR><TR style="FONT-SIZE: smaller; FONT-FAMILY: Verdana, Arial, Helvetica, sans-serif; BACKGROUND-COLOR: #e5e5e5"><TD>CPS</TD><TD>Viton</TD><TD>3/32"</TD><TD>13/16"</TD><TD>1"</TD><TD>Grainger</TD><TD>1KFL5</TD><TD>50/$9.17</TD><TD>117</TD></TR></TBODY></TABLE>
