M50 Oil Pan Removal

[vegasjoe]

I think that I have removed all the bolts that hold on the oil pan yet it still will not come off.

I have put a putty knife in between the oil pan and the engine block except in two places. On the passenger side of the oil pan where it meets the block also on the bell housing toward the passenger's side. I still do not see or feel any bolts. The oil pan it binding up on the passenger's side where it meets the bell housing.

Any suggestions would be appreciated.

Thank you,

[Jehu]

You have the engine lifted? I saw pics of this job recently i think and in addition to dropping the bell housing the engine was pulled up a bit ..

[vegasjoe]

I have the engine lifted but only about 1.5". The bell housing is not dropped though.

[Jehu]

I thought i read there are some Pan bolts behind the bell housing so it needs to come away but don't quote me. here's what the Bently manual says;

To remove and install oil pan (M50 engine)

1. Drain the engine oil as described in 020 Maintenance
Program.
2. Disconnect the oil level sensor harness connector.
3. Remove the radiator cooling fan and the fan shroud.
See 170 Radiator and Cooling System.

NOTE

The
radiator cooling Ian nut

(32 mm wrench) has tett
neno threads.

4. Release the drive belt tension and remove the engine
drive belt. See Fig. 5.

8 11143

Fig . 5. To remove pofv-ribbed dnve belt. pry cover from trorn of tensioner.
Then uSing

Brnrn hex key. turn tonsioner clockwise
(arrow) to release tension and slip belt on pulleys.

5. Without disconnecting any fluid lines. remove the power
steering pump and its bracket from the engine block.
See Fig. 6. Support the pump from the body using stiff
wire.
6. Remove the oil dipstick guide tube mounting bolt and
remove the tube. See Fig. 7.

NOTE

The
guide tube is sealed in the bloc!< using an D·ring.
Check that the D-ring comes out with the tube. Use

a

new D-ring when installing the tube.

Fig. 6. Power steennq pump mountinq bolts (arrows).
Fig. 7. Oil dipstick guide tube being removed. Use a new O-ring
(arrow) during installation,

7. On cars with automatic transmission. remove the
brackets that hold the ATF cooler lines to the oil pan
and cylinder block.
8. Remove the oil pan mounting bolts and lower the oil
pan to the subframe crossmember.

OIL PAN

119-6

LUBRICATION SYSTEM

WARNING

II
the oil pan does not separate easity Irom the engine
cylinder btoc!<.

a lew taps with a rubber mallet
should break it Iree. Do not pry the oit pan loose.

5. Remove engine and transmission splash pans from beneath
car.
6. Disconnect harness connector at oil level sensor.

9.

Unbolt the oil pump pickup tube from the oil pump and
then remove the oil pan from the rear.
7. Remove oil pan lower section. See Fig. 8.

-

0011516

+

U

.. '-.U- - - - - - - -l

Tighten the oil pan bolts evenly in stages. Reconnect the oil
level sensor harness connector. Use a new O-ring when installing
the dipstick guide tube. Fill the engine with oil as described
in

020 Maintenance Program. After adding the
engine oil, start and run the engine. Raise the engine speed to
2,500 rpm until the oil pressure warning lamp goes out (about
5 seconds).
Installation is the reverse of removal.When installing the oil
pan, apply a bead of non-hardening sealing compound (Three
Bond®1207B or equivalent) to the front and rear end cover
seam areas on the block. Position the oil pump pickup tube
and the oil pan onto the block and install the pickup tube using
a new gasket. Be sure the tab on the gasket faces down to wards
the intake of the pickup tube.
Tightening Torque
• Oil pan to engine block 10 Nm (89 in-Ib)

Fig.

8. Oil pan lower section mountmq bolts (arrows) on MOO engine.
Oil level sensor shown at A.

[gale]

There are 2 openings on the bottom of the trans bellhousing, about 3" apart. There are 2 more long hex head bolts (10 mm socket) that attach the back of the pan to the block. Just did one Monday. I unbolted the motor mounts, dropped the subframe/suspension & hoisted the front of the motor as high as it would go & the pan slid out without having to detach the pick-up tube. Remove the dipstick tube, it has a single bolt on a tab and a friction fit o-ring into the top of the sump & pulls straight out with a little twisting.

I feel your pain!