Engine - Oil Leaks From Rear Of Engine

Article No.
91-7-8

04/05/91


LEAKS - OIL - 3.0L - CAMSHAFT CORE PLUG


FORD: 1986-91 TAURUS 1990-91 PROBE

LINCOLN-MERCURY: 1986-91 SABLE

LIGHT TRUCK: 1986-91 AEROSTAR 1991 RANGER


ISSUE: Oil leaking at the rear of the engine may be coming from the rear camshaft core (welsh) plug. Oil leaks in this area are sometimes mistakenly identified as coming from the rear crankshaft seal.

ACTION: Check for a leaking rear camshaft core plug. If necessary, install a new camshaft core plug. Refer to the following procedure for service details.


Before installing a camshaft core plug, inspect the plug bore for any damage that would interfere with proper sealing of the plug. If the bore is damaged, it will be necessary to true the surface by boring for the next oversize plug. Oversize plugs are identified by the "OS" stamped in the flat located on the side of the plug.

Figure 1:

1. Install the camshaft core plug (F1DZ-6266-A), Figure 1.

a. Use a suitable driver.

b. Apply a light coating of anaerobic sealer (E1FZ-19562-A) on the sealing edge of the plug before installation.

2. Install the flywheel. Tighten the bolts to 59 lb.ft. (80 N-m).


PART NUMBER PART NAME CLASS

E1FZ-19562-A Anaerobic Sealer AM
F1DZ-6266-A Camshaft Core Plug B

OTHER APPLICABLE ARTICLES: None
WARRANTY STATUS: Eligible Under Basic Warranty Coverage, Powertrain Warranty Coverage
OPERATION DESCRIPTION TIME
910708A Replace Camshaft Core 3.1 Hr
Plug - Aerostar/Ranger - Automatic Transmission
910708A Replace Camshaft Core 3.0 Hr
Plug - Aerostar/Ranger - Manual Transmission
910708A Replace Camshaft Core 4.1 Hr.
Plug - Probe - Automatic Transmission
910708A Replace Camshaft Core 5.7 Hr.
Plug - Taurus/Sable
910708A Replace Camshaft Core 3.9 Hr.
Plug - Probe - Manual Transmission
DEALER CODING
BASIC PART NO. CONDITION CODE
6266 77
OASIS CODES: 401000, 499000