Part 2

Tightening torques, tightening sequences, assembly overviews for V8 4.8 l DFI naturally aspirated and turbo engine up to October 2008 (Continued)





Oil level measurement

1 - Oil dipstick
2 - Correct area for engine-oil fill level; the following measuring conditions must be observed: Surface must be level, oil temperature between 80 and 90 degrees C, drip time of 3 to 4 minutes after stopping the engine, measuring tongue on oil dipstick must be clean, leave oil dipstick in guide tube for 5 seconds
3 - Upper tolerance limit (max. + 5 mm)
4 - Lower tolerance limit (max. - 5 mm)
- Oil filling quantity between Min and Max marking is 1.5 liters





Oil lines on turbo engine (M48/51)

1 - Oil extraction line for turbocharger, cylinders 1 to 4
2 - Oil extraction line for turbocharger, cylinders 5 to 8
3 - Intake manifold on oil pump
4 - O-ring
5 - Oil pressure pipe
6 - O-ring
7 - O-ring, 22 x 3
8 - Oil control line
9 - O-ring
10 - O-ring
11 - Screw, M6 x 16; oil pressure pipe to oil pump and oil guide housing - Tightening torque: 12 Nm (9 ftlb.). oil control line to oil pump and oil guide housing - Tightening torque: 12 Nm (9 ftlb.). turbocharger extraction line to oil pump - Tightening torque: 12 Nm (9 ftlb.)
12 - Screw, M6 x 20 - Tightening torque: 12 Nm (9 ftlb.)
A - For arrangement of oil lines, see other illustrations
B - Direction of travel





Oil lines on naturally aspirated engine (M48/01)

1 - Oil pump intake manifold
2 - O-ring
3 - Oil pressure pipe
4 - O-ring
5 - O-ring
6 - Oil regulating line
7 - O-ring
8 - O-ring
9 - Screw, M6 x 16; oil pressure pipe to oil pump and oil guide housing - Tightening torque: 12 Nm (9 ftlb.). oil control line to oil pump and oil guide housing - Tightening torque: 12 Nm (9 ftlb.)
10 - Screw, M6 x 20 - Tightening torque: 12 Nm (9 ftlb.)





Oil lines, intake manifold on turbo engine M48/51

1 - Mount for oil extraction line for turbocharger, cylinders 1 to 4
2 - Mount for oil extraction line for turbocharger, cylinders 5 to 8
3 - Mount for oil separator vent line, cylinders 5 to 8
4 - Mount for oil pump intake manifold
6 - Mount for oil pressure pipe
9 - Mount for oil regulating line
A - Direction of travel





Oil lines, intake manifold on naturally aspirated engine M48/01

1 - Mount for oil pump intake manifold
2 - Mount for oil separator vent line, cylinders 5 to 8
3 - Mount for oil pressure pipe
4 - Mount for oil regulating line





Oil pan

1 - Oil pan with reusable seal inserted
2 - Sealing ring
3 - Oil drain plug, M18 x 1.5 - Tightening torque: 50 Nm (37 ftlb.)
4 - Screw, M6 x 20 - Tightening torque: 10 Nm (7.5 ftlb.)
A - Direction of travel





Oil guide (oil plate)

1 - Oil guide (oil plate)
2 - Oil return seal
3 - Screw, M6 x 20 - Tightening torque: 10 Nm (7.5 ftlb.)
4 - Bulkhead seal
5 - Joining socket
6 - O-ring
7 - Assembly depth until locking lug engages
A - Direction of travel





Oil pump on turbo engine M48/51 with oil extraction stage

1 - Oil pump with extraction stage
2 - Screw, M8 x 22; replace; 1st turn - Initial tightening: 20 Nm (15 ftlb.). final tightening (torque angle) - Torque angle: 90 degrees
3 - Oil pump sprocket
4 - Cap screw, M36 x 1.5 x 12 - Tightening torque: 40 Nm (30 ftlb.)
5 - Solenoid valve
6 - O-ring (grease before fitting)
7 - Dowel sleeve
8 - Screw, M6 x 45 Tightening torque: 13 Nm (9.5 ftlb.)
9 - Sprocket cover
10 - Screw, M6 x 16 Tightening torque: 10 Nm (7.5 ftlb.)
11 - Drive chain
12 - Connection for intake manifold joining socket
A - Direction of travel





Oil pump on naturally aspirated engine M48/01

1 - Oil pump
2 - Screw, M8 x 22; replace; 1st turn - Initial tightening: 20 Nm (15 ftlb.). final tightening (torque angle) - Torque angle: 90 degrees

3 - Oil pump sprocket
4 - Cap screw, M36 x 1.5 x 12 - Tightening torque: 40 Nm (30 ftlb.)
5 - Solenoid valve
6 - O-ring (grease before fitting)
7 - Dowel sleeve
8 - Screw, M6 x 45 Tightening torque: 13 Nm (9.5 ftlb.)
9 - Sprocket cover
10 - Screw, M6 x 16 Tightening torque: 10 Nm (7.5 ftlb.)
11 - Drive chain

Engine - Cooling





Coolant pump

1 - Coolant pump
2 - Seal; fitted in pump
3 - Screw, M6 x 25 - For details of tightening sequence, see below - Tightening torque: 10 Nm (7.5 ftlb.)
A - Direction of travel





Tightening sequence for coolant pump





Coolant guide

1 - Coolant pipe with sealing ring
2 - Coolant sensor Tightening torque: 30 Nm (22 ftlb.)
3 - Screw, M6 x 16 Tightening torque: 12 Nm (9 ftlb.)
4 - Screw M6 x 12 (currently not installed)
5 - Holding clamp (currently not installed)
6 - Sealing ring
7 - Screw plug, M16 x 1.5 - Tightening torque: 30 Nm (22 ftlb.)
8 - Screw, M6 x 25 - Tightening torque: 12 Nm (9 ftlb.)
9 - Collection pipe
10 - Distributor pipe seal
11 - Lid
A - Direction of travel





Thermostat housing

1 - Thermostat housing
2 - Screw, M6 x 25 - Tightening torque: 10 Nm (7.5 ftlb.)
3 - Screw, M6 x 25; screwed to fuel high-pressure distribution pipe
4 - Seal for thermostat housing; replace
5 - Thermostat
6 - Intake socket
A - Direction of travel





Tightening sequence for thermostat housing





Coolant return line on turbo engine M48/51

1 - Coolant pipe
2 - Coolant hose
3 - Holder
4 - Screw, M6 x 12 Tightening torque: 10 Nm (7.5 ftlb.)
5 - Screw, M6 x 20 Tightening torque: 10 Nm (7.5 ftlb.)
6 - Connect tab on oil/coolant heat exchanger
B - Clip on to support bracket
A - Direction of travel





Coolant return line on naturally aspirated engine M48/01

1 - Coolant pipe
2 - Coolant hose
3 - Holder
4 - Screw, M6 x 12 Tightening torque: 10 Nm (7.5 ftlb.)
5 - Screw, M6 x 20 Tightening torque: 10 Nm (7.5 ftlb.)





Coolant supply line on turbo engine M48/51

1 - Coolant pipe
2 - Screw, M6 x 12; coolant line to collection pipe and right engine carrier - Tightening torque: 10 Nm (7.5 ftlb.). coolant supply line to right oil feed line - Tightening torque: 10 Nm (7.5 ftlb.). coolant supply line to right turbocharger coolant line - Tightening torque: 10 Nm (7.5 ftlb.)
3 - Clip
4 - Coolant supply hose for oil/coolant heat exchanger
5 - Coolant supply hose
6 - Adapter for coolant supply line for turbocharger, cylinders 1 to 4
A - Direction of travel





Coolant supply line on naturally aspirated engine M48/01

1 - Screw, M6 x 12 - Tightening torque: 10 Nm (7.5 ftlb.)
2 - Coolant pipe
3 - Coolant supply hose
4 - Coolant hose





Ventilation

1 - Vent line
2 - Screw, M6 x 16 - Tightening torque: 10 Nm (7.5 ftlb.)
A - Direction of travel

Brakes - Hydraulic brake system, regulator





Vacuum pump

1 - Vacuum pump
2 - Screw, M6 x 25 - Tightening torque: 10 Nm (7.5 ftlb.)
3 - O-ring
4 - O-ring

Intake module bolts 13.5-16.5 Nm (10-12 ftlb.)





Drive Plate Bolts
Replace bolts
Tighten new bolts in a crosswise pattern
First pass 60 Nm (44 ftlb.)
Final pass Tighten 90°