60 Degree V6 Engine Oil Leak at Crankshaft Front Oil Seal (Use New Crankshaft Front Oil Seal Installer Tool EN-48869) (07-06-01-023)

Publication date: 2007-12-05
Reference number: 07-06-01-023

60 Degree V6 Engine Oil Leak at Crankshaft Front Oil Seal (Use New Crankshaft Front Oil Seal Installer Tool EN-48869)

TECHNICAL SERVICE BULLETIN

Reference Number(s): 07-06-01-023, Date of Issue: December 05, 2007

Affected Model(s):

1986-2008 GM Passenger Cars and Light Duty Trucks (including Saturn); with 2.8L, 3.1L, 3.4L, 3.5L or 3.9L 60 Degree V6 Engine; (VINs D, E, F, J, K, L, M, N, R, S, T, V, W, X, Z, 1, 3, 8, 9, W, R -; RPOs LG6, LA1, LNJ, LG8, LL1 or LX9, L82, LL2, LB8, LHO, LG5, LB6, LE2 or LQ1, LH7, LC1, L44, LZ4, LZE, LZ9, LGD, LZ8, LZG)

SERVICE INFORMATION

IMPORTANT: This bulletin does not apply to 2004-2007 Saturn VUE models with 3.5L DOHC V6 Engine (VIN 4 - RPO L66) or 2005-2008 Cadillac CTS with 2.8L HFV6 Engine (VIN T - RPO LP1).

IMPORTANT: This bulletin only applies to 60 degree V6 engines. Some of the discontinued 60 degree V6 engine VINs and RPOs may have carried over to other new model year engines and may no longer be a 60 degree V6 engine. So this bulletin may not apply. It is very important to verify that the following information is correct before using this bulletin:

Year of vehicle (e.g. N = 1992)
V6 Engine Liter size (e.g. 3.4L)
VIN CODE (e.g. X)
RPO (e.g. LQ1)

If ALL the information from the vehicle (year, size, VIN Code, RPO) you're working on can be found under the models listed above, then this bulletin applies to that engine. If one or more of the vehicle's information can NOT be found under the models listed above, then this bulletin does NOT apply.

Condition

Some customers may comment on external oil leakage.

Correction

IMPORTANT: Before replacement of the crankshaft front oil seal, be sure the PCV system is operating correctly.

Tools Required

IMPORTANT: TOOLS WERE SHIPPED TO YOUR DEALERSHIPS. IF YOU HAVE NOT RECEIVED THEM OR THEY ARE LOST, PLEASE CALL GM SPECIAL SERVICE TOOLS AT 1-800-GM-TOOLS.

The EN-48869 has a unique design to allow the technician to easily install the front crankshaft seal squarely to the correct depth and direction. Before proceeding with installation, review the illustration below to become familiar with the tool.

Fig 1: View Of EN-48869 Crankshaft Front Oil Seal Installation Tool

Courtesy of GENERAL MOTORS CORP.

Callouts For Previous Graphic

Installer Body
Bearing
Washer
Drive Nut
Force Screw

Removal Procedure

Remove the crankshaft balancer. Refer to Crankshaft Balancer Replacement in SI.

Fig 2: View Of Crankshaft Front Oil Seal

Courtesy of GENERAL MOTORS CORP.

IMPORTANT: Use care not to damage the engine front cover or nick the crankshaft.

Remove the crankshaft front oil seal (1) using a suitable tool.

Installation Procedure

Fig 3: View Of Front Oil Seal & Installer Body

Courtesy of GENERAL MOTORS CORP.

Lubricate the inside of the crankshaft front oil seal (1) with clean engine oil. Then install the seal to the installer body (2).

Fig 4: Aligning Installer Body

Courtesy of GENERAL MOTORS CORP.

Align the oil seal and installer body (1) with the engine front cover and crankshaft.

Fig 5: Installing Components

Courtesy of GENERAL MOTORS CORP.

IMPORTANT: Before installing the force screw, apply a small amount of the Extreme Pressure Lubricant J 23444-A, provided in the tool kit, to the force screw.

Install the drive nut (4) onto the threaded force screw shaft (5), washer (3), and bearing (2). Then install to the installer body (1) and tighten the force screw to the crankshaft by hand.

Fig 6: Turning Drive Nut

Courtesy of GENERAL MOTORS CORP.

Using a wrench, turn the drive nut on the threaded force screw shaft (2), this will push the seal into the engine front cover.

Fig 7: Making Installer Body Snug

Courtesy of GENERAL MOTORS CORP.

Continue to turn the drive nut (2) with the wrench until the installer body (1) is snug and flush against the engine front cover.

Fig 8: Verifying Seal Is Seated

Courtesy of GENERAL MOTORS CORP.

Loosen and remove the drive nut from the threaded force screw shaft, washer, bearing, and installer body. Verify that the seal has seated properly, flush against front cover flange (1).
Install the crankshaft balancer. Refer to Crankshaft Balancer Replacement in SI.
Inspect for proper fluid levels.
Inspect for leaks.

Parts Information

Part Number	Description	Qty
10243247	Seal, Crankshaft Front Oil	1

Warranty Information

For vehicles repaired under warranty, use:

Warranty Information

Labor Operation	Description	Labor Time
J0750	Seal, Timing Cover Oil Replace	Use Published Labor Operation Time