17 00 Coolant
| Type | Thread | Tightening specification | Measure | |
|---|---|---|---|---|
| 1AZ Hose clamps to coolant hoses 32... 48 mm dia. | All | 2.5 Nm | ||
| 2AZ Bleed screw (WAF 8) to thermostat housing | All, without E46 | 8 Nm | ||
| Plastic bleed screws to coolant lines | E46 | 2 -0.5/+1 Nm | ||
| 3AZ Level switch (WAF 30) to coolant expansion tank | All | 3 Nm | ||
| 4AZ Bleed screw to water valve or auxiliary water pump | E90 / E91 | 3.5 Nm |
TIGHTENING TORQUE SPECIFICATION - COOLANT
17 00 Coolant/Drain Plug
| Type | Thread | Tightening specification | Measure | |
|---|---|---|---|---|
| 1AZ Coolant drain plug to crankcase | S85 | M10x1 | 13 ± 2 Nm | |
| S54 | M14x1.5 | 30 Nm | ||
| 2AZ Screw plug for Water jacket to cylinder head | S85 | M26x1.5 | 50 Nm | |
| 3AZ Vent connection, cooling circuit | S85 | M10x1 | 13 Nm |
TIGHTENING TORQUE SPECIFICATION - COOLANT/DRAIN PLUG
17 11 Radiator And Mounting Parts
| Type | Thread | Tightening specification | Measure | |
|---|---|---|---|---|
| 1AZ Radiator to body | ||||
| Self-tapping screw | All | B6.3 | 9 Nm | |
| All | M6 | 10 Nm | ||
| 2AZ Drain plug to radiator | All | 2.5 Nm | ||
| 3AZ Temperature switch to radiator (91 °C / 99 °C) max. | All | 15 Nm | ||
| 4AZ Expansion tank to body | All | 9 Nm | ||
| M57TU / E65 | 4 Nm | |||
| 5AZ Radiator on module carrier | E46 | 4 + 1 Nm | ||
| 6AZ Retaining plate, expansion tank, to radiator | E46 | 4 + 1 Nm | ||
| 7AZ Fan cowl on radiator | E46 | 4 + 1 Nm | ||
| 8AZ Plug in radiator (temperature switch omitted) | E36/7 / M54 | M14 x 1.5 | 15 Nm | |
| 9AZ Mounting plate to radiator | M57TU / E65 | 4.5 Nm | ||
| 10AZ Radiator bracket | All | 2.5 Nm |
TIGHTENING TORQUE SPECIFICATION - RADIATOR AND MOUNTING PARTS
17 21 Engine Oil Cooler
| Type | Thread | Tightening specification | Measure | |
|---|---|---|---|---|
| 1AZ Engine oil cooler to body | All | 14 Nm | ||
| Oil cooler vapor extraction guide to trim panel | E36 / M3 | B4.8 | 4 Nm |
TIGHTENING TORQUE SPECIFICATION - ENGINE OIL COOLER
17 22 Oil Cooler Pipes
| Type | Thread | Tightening specification | Measure | |
|---|---|---|---|---|
| 5AZ Cap nut on transmission oil cooler (on radiator) and on transmission | All | M18 x 1.5 | 20 Nm | |
| 5HP30 | M22 x 1.5 | 28 Nm | ||
| 6AZ Oil lines on transmission | ||||
| Hollow bolt | All | M16 x 1.5 | 37 Nm | |
| 7AZ Oil lines on transmission oil cooler | A 5 S 300 J | 28 Nm | ||
| Hollow bolt | All | M14 x 1.5 | 27 Nm | |
| 8AZ Screw-in fitting on transmission | All | M14x1.5 und M16x1.5 | 37 Nm | |
| 9AZ Oil hose on oil pipe | E23 | 28 Nm | ||
| 10AZ Oil pipe bracket on radiator | E23 | 2 Nm | ||
| 11AZ Oil pipe bracket on body | E23 | 6.5 Nm | ||
| 12AZ Oil cooler on transmission | 5HP30 | 10 Nm | ||
| 13AZ Transmission oil cooler line to transmission | N42 | M8 | 21 Nm |
TIGHTENING TORQUE SPECIFICATION - OIL COOLER PIPES