Oil leak from front of the engine!

36409 Views 20 Replies 7 Participants Last post by MindFury, Aug 6, 2016

kmesaeh

Discussion Starter · Jul 6, 2014

I noticed last weekend when changing the oil that there was oil all over the bottom of the engine, trans and everything else. It looks like the front crankshaft seal that's leaking! It's pretty bad, I've gone through 3 quarts in a week. Has anyone ever done the front seal on a 2010 3.7l? Any help would be great! Thanks in advance.

1 - 20 of 21 Posts

G

· #2 · Jul 6, 2014

Hi kmesaeh,

As a customer service representative, I'm not able to provide much in the way of do-it-yourself information but I am so that your fellow forum members will come through and give you some insight on how to resolve this issue yourself. If you have any lingering questions or concerns, don't be afraid to contact us. We are only a private message away!

Jennifer T.
GM Customer Care

rshadd

· #3 · Jul 6, 2014 (Edited)

http://www.355nation.net/forum/i4-i5-engine-drivetrain/47251-oil-leak.html

It's a big job and requires quite a few special tools...

rshadd

· #4 · Jul 6, 2014 (Edited)

4

Crankshaft Front Oil Seal Replacement

Tools Required

J 45951 Front Seal Installer

Removal Procedure

Remove the crankshaft balancer. Refer to Crankshaft Balancer Replacement .

Important: Do not damage the engine front cover or the crankshaft.
Pry out the crankshaft front oil seal using a suitable tool. Discard the seal.

Installation Procedure

Apply engine oil to the outside diameter of the crankshaft front oil seal.
Use the J 45951 to install the NEW crankshaft front oil seal.
Remove the J 45951 .
Install the crankshaft balancer. Refer to Crankshaft Balancer Replacement .

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rshadd

· #5 · Jul 6, 2014 (Edited)

13

Crankshaft Balancer Replacement

Special Tools

EN 46547 Flywheel Holding Tool
EN-48034 Harmonic Balancer Installer
J 41816-A Crankshaft Balancer Remover
J 41816-2 Crankshaft End Protector
J 45059 Angle Meter

Removal Procedure

Remove the radiator. Refer to Radiator Replacement.
Remove the drive belt. Refer to Drive Belt Replacement.
Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle.
Remove the service slot plug.

Note: The crankshaft balancer does not have a key-way; so the crankshaft could turn when tightening, causing an improper torque.
Install the EN 46547 (1) into the flywheel teeth.
Lower the vehicle.
Remove and discard the crankshaft balancer bolt.
Install the J 41816-2 and J 41816-A to the crankshaft balancer.

Note: Do not pull on outer edge of the crankshaft balancer.
Remove the crankshaft balancer.
Remove the J 41816-2 and J 41816-A .
Remove the crankshaft balancer friction washer.
This will be located at the end of the crankshaft balancer or on the crankshaft.

Installation Procedure

Install the crankshaft balancer using the EN-48034 .
Remove the EN-48034 .

Caution: Refer to Fastener Caution in the Preface section.
Install the crankshaft balancer washer and NEW bolt and tighten to 150 N·m (111 lb ft) plus an additional 180 degrees using the J 45059.
Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle.
Remove the EN 46547 (1) from the flywheel teeth.
Install the service slot plug.
Lower the vehicle.
Install the drive belt. Refer to Drive Belt Replacement.
Install the radiator. Refer to Radiator Replacement.

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Joe canyon

· #6 · Jul 6, 2014

That's a bad deal for a 2010 truck IMO. How long have you had it?

rshadd

· #7 · Jul 6, 2014 (Edited)

4

Engine Front Cover Replacement

Special Tools

J 44219 Cover Alignment Pins

Removal Procedure

Remove the water pump. Refer to Water Pump Replacement.
Remove the crankshaft balancer. Refer to Crankshaft Balancer Replacement.
Remove the drive belt tensioner. Refer to Drive Belt Tensioner Replacement.
Remove the power steering pump. Refer to Power Steering Pump Replacement.
Remove the oil pump pipe and screen assembly. Refer to Oil Pump Suction Pipe and Screen Assembly Replacement.
Lower the vehicle.
Remove the 7 mm center bolt (1).
Remove the remaining engine front cover bolts.
Install 2 bolts into the threaded holes to act as jack screws and tighten evenly to release the engine front cover from the engine block.
Remove the engine front cover.
Remove the 2 bolts from the jack screw holes.
Remove the oil pump, if necessary. Refer to Oil Pump Replacement.
Clean and inspect the engine block sealing surface.

Installation Procedure

Install the oil pump, if previously removed. Refer to Oil Pump Replacement.
To aid in alignment of the cover, thread the J 44219 into the engine block.

Note: The engine front cover must be installed within 10 minutes from when the sealer was applied.
Apply a 3 mm (0.12 in) bead of sealer to the engine front cover (1). Refer to Adhesives, Fluids, Lubricants, and Sealers.
Align the oil pump to the crankshaft sprocket splines.
Position the engine front cover over the J 44219 , and to the engine block.
Install the engine front cover bolts.
Remove the J 44219 from the engine block.

Caution: Refer to Fastener Caution in the Preface section.
Install the 2 remaining engine front cover bolts.
- Tighten the bolts to 10 N·m (89 lb in).
- Tighten the small center bolt (1) last to 8 N·m (71 lb in).
Install the oil pump pipe and screen assembly. Refer to Oil Pump Suction Pipe and Screen Assembly Replacement.
Install the power steering pump. Refer to Power Steering Pump Replacement.
Install the drive belt tensioner. Refer to Drive Belt Tensioner Replacement.
Install the crankshaft balancer. Refer to Crankshaft Balancer Replacement.
Install the water pump. Refer to Water Pump Replacement.

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rshadd

· #8 · Mar 18, 2016

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· #9 · Mar 18, 2016

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Tweek

· #11 · Mar 18, 2016

Great info @rshadd !!!

captainrab

· #12 · Mar 19, 2016

Rich is all over it. Well done

MindFury

· #13 · Aug 1, 2016 (Edited)

Questions on the seal replacement procedure. Parts required would be:
The seal obviously
shim for crank
a new bolt for the HB?
coolant and related fluids.

Will probably get everything from rock auto as they seem to be the only ones with everything. Am I missing anything?

I was just about to click on my order wheni realised the sleeve rock auto has is for the rear?

https://www.rockauto.com/en/moreinfo.php?pk=257734&cc=1431075&jsn=__GIX__1__

Does anyone have a PN for the front one if in fact there is one?

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kmesaeh

Discussion Starter · #14 · Aug 1, 2016

MindFury said:
Questions on the seal replacement procedure. Parts required would be:
The seal obviously
shim for crank
a new bolt for the HB?
coolant and related fluids.

Will probably get everything from rock auto as they seem to be the only ones with everything. Am I missing anything?

I was just about to click on my order wheni realised the sleeve rock auto has is for the rear?

https://www.rockauto.com/en/moreinfo.php?pk=257734&cc=1431075&jsn=__GIX__1__

Does anyone have a PN for the front one if in fact there is one?

Front cover seal and depending on mileage, chain tensioner and chain guides, alternator, water pump.

cart7881

· #15 · Aug 1, 2016

MindFury said:
Questions on the seal replacement procedure. Parts required would be:
The seal obviously
shim for crank
a new bolt for the HB?
coolant and related fluids.

Will probably get everything from rock auto as they seem to be the only ones with everything. Am I missing anything?

I was just about to click on my order wheni realised the sleeve rock auto has is for the rear?

https://www.rockauto.com/en/moreinfo.php?pk=257734&cc=1431075&jsn=__GIX__1__

Does anyone have a PN for the front one if in fact there is one?

Assuming that you are just replacing the seal, referencing Rich's Posts #4 and #5, you shouldn't need any kind of sleeve or shim. Tooling will be the biggest issue.

MindFury

· #16 · Aug 1, 2016

cart7881 said:
Assuming that you are just replacing the seal, referencing Rich's Posts #4 and #5, you shouldn't need any kind of sleeve or shim. Tooling will be the biggest issue.

I have access to the pullers and tooling so no worries there. From what i have been gathering, there was kit at one time that came with the shim and seal to remedy any grooving on the shaft and ensure a good seal. i can get the seal at a local store. im wondering if i should even get a new bolt. I know it stretches at torque, but that's a few day wait for a 4 dollar bolt. Thanks

cart7881

· #17 · Aug 2, 2016

I'm not sure about reusing the bolt. Your call on that one.

MindFury

· #18 · Aug 2, 2016

cart7881 said:
I'm not sure about reusing the bolt. Your call on that one.

yea im not trying to risk it breaking in the crankshaft from being stressed down the road. i dont really want to pay 22 bucks for next day on an 8 dollar bolt as i need my truck though. Guess i'll look for the least painful route.

cart7881

· #19 · Aug 2, 2016

Local dealer?

MindFury

· #20 · Aug 2, 2016

cart7881 said:
Local dealer?

Nope, already tried them they wanted 12 just for the bolt, 3 days min wait. I have it coming ups, will be here in 2 days, total cost was under 11 bucks, not too bad.

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