I just bought this truck from a dealership w/o a warranty and two weeks after now and I am starting to find things. I found that a leak that had to be there before the pressure washed it. I crawled under there when I bought it but all was clean.

What should I do?

How hard is it to fix myself?

 

Some special tools required, example fan wrench, seal driver, metric tools 10mm, 15mm. torque wrench. Not easy job for a novice to do. Dealership should cover under Cummins warranty if under 100k miles. If not they should do for customer satisfaction. Make sure oil level is not overfilled or diluted with diesel fuel.


REMOVAL
Disconnect both battery negative cables.
Raise vehicle on hoist.
Partially drain engine coolant into container suitable for re-use (Refer to 7 - COOLING - STANDARD PROCEDURE).
Lower vehicle.
Remove radiator upper hose.
Disconnect coolant recovery bottle from radiator filler neck and lift bottle off of fan shroud.
Disconnect windshield washer pump supply hose and electrical connections and lift washer bottle off of fan shroud.
Remove viscous fan/drive assembly. (Refer to 7 - COOLING/ENGINE/RADIATOR FAN - REMOVAL).
Remove cooling fan shroud and fan assembly from the vehicle.
Remove the accessory drive belt (Refer to 7 - COOLING/ACCESSORY DRIVE/DRIVE BELTS - REMOVAL).
Remove the cooling fan support/hub from the front of the engine.
Raise the vehicle on hoist.
Remove the crankshaft damper and speed indicator ring.
Remove power steering pump.
Remove accessory drive belt tensioner.
Remove the gear cover-to-housing bolts and gently pry the cover away from the housing, taking care not to mar the gasket surfaces. Remove crank seal dust shield with cover.
Support the cover on a flat work surface with wooden blocks (Removing Seal from Cover), and using a suitable punch and hammer, drive the old seal out of the cover from the back side of the cover to the front side(Removing Seal from Cove

CAUTION: The seal lip and the sealing surface on te crankshaft must be be from all oil residue, to prevent leaks. The crankshaft and seal surface must be completely dry when the seal is installed.

Clean cover and housing gasket mating surfaces. Use a suitable scraper and be careful not to damage the gear housing surface. Remove any old sealer from the oil seal bore. Thoroughly clean the front seal area of the crankshaft. The seal lip and the sealing surface on the crankshaft must be free from all oil residue to prevent seal leaks.
Inspect the gear housing and cover for cracks and replace if necessary. Carefully straighten any bends or imperfections in the gear cover with a ball-peen hammer on a flat surface. Inspect the crankshaft front journal for any grooves or nicks that would affect the integrity of the new seal.
Apply a bead of Mopar® Stud & Bearing Mount to the outside diameter of the seal. Do not lubricate the inside diameter of the new seal.
With the cover supported by wood blocks, install the seal into the rear of the cover using crankshaft seal installer Special Tool 8281 and driver handle C-4171. Strike the driver handle until the installation tool bottoms out on the inside of the cover.
CAUTION: Do not distort or damage seal.





1 - SEAL PILOT


Install the plastic seal pilot (provided with seal kit) into the crankshaft seal.
Apply a bead of Mopar® Silicone Rubber Adhesive Sealant or equivalent to the gear housing cover sealing surface.
Install the cover to the gear housing, aligning the seal pilot with the nose of the crankshaft.
Install the cover bolts and tighten to 24 N·m (18 ft. lbs.) torque. Remove pilot tool.
Install dust shield over nose of crankshaft.
Install the crankshaft damper and speed indicator ring. Torque the bolts to 40 N·m (30 ft. lbs.). Then rotate an additional 60°. Use the engine barring tool to keep the engine from rotating during tightening operation.
Install the fan support/hub assembly and torque bolts to 32 N·m (24 ft. lbs.).
Install power steering pump.
Install accessory drive belt tensioner. Torque bolt to 43 Nm (32 ft.lbs.).
Install cooling fan (Refer to 7 - COOLING/ENGINE/RADIATOR FAN - INSTALLATION).
Install the accessory drive belt (Refer to 7 - COOLING/ACCESSORY DRIVE/DRIVE BELTS - INSTALLATION).
Refill cooling system (Refer to 7 - COOLING - STANDARD PROCEDURE).
Connect battery negative cables.
Start engine and check for oil leaks.

 

OK, well I feel like a foool!

I should have Specified, Transfer Case front output shaft to front dif.

 

That's a horse of a different color. Easy job if you have some basic tools.

Remove the front propeller shaft (Refer to 03 - Differential and Driveline/Propeller Shaft/SHAFT, Drive - Removal) .
2. Install two bolts 180° apart into the front output shaft companion flange.
3. Place Yoke Holder 6719A (1) over the bolts (2) and against the companion flange.
4. Remove and discard the front companion flange nut.
5. Remove the companion flange from the front output shaft. It may be necessary to use Pinion Flange Remover 8992 to remove the companion flange.
6. Using a screw and a slide hammer, remove the front output shaft seal.


INSTALLATION


1. Install the new front output shaft seal with Seal Installer MB-991168-A.
2. Install the front companion flange onto the front output shaft.
3. Install two bolts 180° apart into the front output shaft companion flange.
4. Place Yoke Holder 6719A (1) over the bolts (2) and against the companion flange.
5. Install a new front companion flange nut. Tighten the companion flange nut to 176-271 N·m (130-200 ft.lbs.).
6. Install front propeller shaft (Refer to 03 - Differential and Driveline/Propeller Shaft/SHAFT, Drive - Installation) .