Remove/install oil sump (124, 129, 140) - RA010A1043100X(01-3100)

WARNING: This page does not describe the selected car, but rather 42 other vehicles, including the 1999 Mercedes-Benz S600, 1999 Mercedes-Benz S500, 1999 Mercedes-Benz S420, 1999 Mercedes-Benz S320, and 1999 Mercedes-Benz CL600. However, it is still accessible from the selected car via links, so may be relevant.

Preceding work:

Warning instructions when hood open (01-0085)

Operation no. of operation texts and work units or standard texts and flat rates:

Models 124, 129

Fig 1: Identifying Oil Sump Remove/Install Components - Models 124, 129
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Model 140

Fig 2: Identifying Oil Sump Remove/Install Components - Models 140 (1 Of 2)

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Fig 3: Identifying Oil Sump Remove/Install Components - Models 140 (2 Of 2)

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Ground cable at battery	disconnect, connect, encode radio, model 140 normalize power windows.
Intake air scoop	remove, install.
Fan cover ring	detach, attach (steps 3+4).
Bottom engine compartment panel	remove, install.
Engine oil	drain, pour in, oil drain plug 25 Nm (18-0020) .
Both front engine mounts	unbolt from below, bolt on, 25 Nm (22-2110) .
Connector (7) of oil level switch	unplug at oil sump.
Connector (24), oil pressure	unplug, plug in (step 9).
Automatic transmission:	unbolt oil pipes (14, 15) at oil sump, bolt on.
Oil cooler pipes (21) at oil sump	unbolt, bolt on.
Model 124, 129:	remove torsion bar (17), install. Model 124 Model 129
Model 140:	unbolt front torsion bar (17), lower and bolt on..
Engine	raise, lower (step 13).
Model 140: Engine	raise with engine supporting bar, lower (step 16).
Model 140: Springs of front axle	remove, install.
Model 140: Bolt of steering coupling	unscrew, screw on (step 18).
Model 140: Front axle	support with vehicle jack adaptor (step 19).
Model 140: Securing bolt of front axle	unscrew, screw on (steps 20+21).
Model 140: Front axle	lower, partially remove, raise.
Model 140: Oil sump	unbolt, take out (steps 22+23), bolt on.
Models 124, 129: Left drag link with steering damper	unbolt, detach, attach and bolt on.
Models 124, 129: Drag link	turn to rear right.
Models 124, 129: Oil sump (4)	unbolt at crankcase, bolt on (step 17). M6: 10 Nm, M8: 22 Nm.
Models 124, 129: Oil sump	take out forward and down, install.
Self-locking bolts and nuts	replace.
Gasket (3)	replace.
Engine	run, check for leaks.

TIGHTENING TORQUE SPECIFICATION

Oil drain plug to oil sump	25
Oil sump to crankcase
M6 hexagon bolts	10
M8 hexagon bolts	25
M10 hexagon bolts	40
Oil lines to oil sump	10

Tightening torques of front axle

Special tools

Fig 4: Identifying Special Tool 001 589 72 21 00

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Fig 5: Identifying Special Tool 140 589 01 61 00

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Fig 6: Identifying Special Tool 140 589 00 62 00

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Fig 7: Identifying Special Tool 001 589 67 21 00

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

COMMERCIALLY AVAILABLE TOOL

Wrench socket set 21 mm 6-sided, 1 /2 " drive

e.g.

Hazet Werk 42853 Remscheid 1 Order no. 900-21

Removing, installing

Disconnect ground cable at battery.
Installation note

Encode radio, model 140 normalize power windows.
Remove intake air scoop.
Models 124, 129
Remove fan cover ring by withdrawing locking pin and turning ring to the left. Place ring on the fan.
Installation note

Ensure that the four engaging points are correctly located.
Remove fan cowl.
Remove bottom engine compartment panel.
Drain engine oil (approx. 7.0 l). Replace gasket. Install oil drain plug.
Unscrew bolts on left and right engine mounts (a) from below. Unscrew nuts (b) of the torsion bar, lower torsion bar. (Model 140) Replace self-locking nuts.

Fig 8: Identifying Left And Right Engine Mounts
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
Detach connector of oil level switch on left of oil sump.
Detach oil pressure connector so that it is not damaged when raising the engine.
If automatic transmission fitted, unscrew oil pipes from oil sump.
Unscrew oil cooler pipes from oil sump.
Remove torsion bar.
Model 124:

Model 129:

Model 140: Unbolt torsion bar, lower.
Models 124, 129: Attach engine hoist to front lifting lug.
Models 124, 129: Unscrew drag link on left and steering damper on right, detach.
Models 124, 129: Turn drag link to the rear right.
Model 140: Raise engine with engine supporting bar.

Fig 9: Raising Engine With Engine Supporting Bar
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Raise engine only far enough for cylinder head to be resting against component compartment wall.
Model 140: Remove springs of front axle, install.
Model 140: Unscrew bolt (1) of steering coupling, push steering spindle up (arrow).

Fig 10: Identifying Steering Coupling Bolt
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
Model 140: Support front axle with vehicle jack adaptor (1), unscrew plastic covers over the two rear mounting points of the front axle.

Fig 11: Identifying Vehicle Jack Adaptor
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
Model 140: Unscrew 4 bolts of the main mounting points at the front axle (22) with 6-sided socket, waf 21 mm. Clean securing thread in the body with M14 X 1.5 tap to remove locking varnish of microencapsulated bolt threads. Use new bolts.
Model 140: Lower front axle until it is hanging clear at the shock absorbers and at the top control arms.

When lowering the front axle, pay attention to the routing of hoses and piping to avoid damaging them.
Model 140: Unbolt oil sump at crankcase.
Model 140: Pull front axle forward and down and remove oil sump to the front.

Do not damage dipstick guide tube (1) and strainer of oil pump (2).

Fig 12: Identifying Dipstick Guide Tube And Oil Pump Strainer
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
Models 124, 129: Unbolt oil sump at crankcase.
Models 124, 129: Take out oil sump forward and down.
Replace gasket, replace self-locking nut.
Install in reverse order.
Installation note

Before bolting oil sump tight, align the contact surface to the transmission otherwise problems may result from noises and vibrations.
Run engine and check for leaks.