When the Stabilant 22A dries it will leave a thin coating of polymer film which is conductive between mating surfaces, and is non-conductive between adjacent pins. Chronology There hadn't been a production V12 from any German manufacturer since the war, Mercedes had made do with large V8s. Remedy: The oil pressure switch and the oil pressure switch wiring harness needs to be replaced. The N73B60 is a 6. The engine used two six cylinder distributors driven off the ends of a camshaft in the traditional Motronic format.
Early engines can suffer oil leaks from the upper timing cover. They should be check at 80,000 miles. These include the floor mat pushed up against the pedal, a misadjusted throttle cable, or a misadjusted cruise control actuator assembly. Remedy: Ensure that when working with 2 or 3 pin plug connectors the seal is in place before the plug connector is connected. Note: When crankshaft or main bearing shells are being replaced, the classification for the arrangement of the main bearing shells in the crankcase is no longer of significance.
Its bore is 89 mm and stroke is 80 mm. Release hex head in main bearing cap. When the was launched in 1987 it took the market by storm. Refer to repair instructions 16 12 000 and 16 12 001. The camshaft lobes were now made separately and shrunk thermally onto the camshaft core. Each cylinder head has a valvetronic assembly — including a motor, control module and position sensor.
Remedy: Part replacement can temporarily stop the problem. The N73 was superseded by the , a twin-turbocharged V12 engine. Corroded or loose contacts could cause problems with the proper functioning of the vehicle, as well as causing difficulty in diagnosis due to the possibly intermittent nature of such problems. Design The M70 didn't push the boat out too far technologically. This will allow the vehicle to driven under various load conditions and readapted. Install a new fuse and start the engine. It can also prevent the formation of more harmful deposits.
If this movement occurs the contacts can develop corrosion. Remedy: The check engine lamp will only be illuminated if the fault is present during two consecutive drive cycles. If action is necessary then: -Obtain customer permission and signature to authorize the extraction of both left and right oxygen sensors. For the 1994 launch of the a modernised M73 V12 was released which saw an increase in capacity to 5. . Only open and tighten with socket wrench.
Note: The main bearing cap screws must always be replaced by new ones. Oil filter insert must locate in oil filter cover. After repairs are made relating to an adaptation related fault, the adaptation values should be cleared. The cylinders are lined with cast iron. Position main bearing caps 1… 7 , so that the retaining grooves of the main bearing shells are on one side. The oil spray bar banjo bolts can slacken and cause problems, just like the M30. Of course a four valve M70 derivative did see the light of day, but in the Mclaren F1 super car.
If the adaptation values are rechecked an indication of the success of the repair can be obtained. If the hose is pinched it should be rerouted or shortened. If you suspect a vacuum leak pray it's not from here. If the value is less than -7% there could be an air restriction, erroneous signal from the air mass meter, or too much fuel in the system. The main bearing caps 6 and 7 are not marked. If looked after these engines are not the nightmare you might imagine a V12 to be. Compared with its predecessor, the N73 has , variable valve timing and variable valve lift.
So the fuel injection was tried a tried and tested recipe. Note: Main bearing cap no. The redline for the N73 is 6,500 rpm. Quantity in Stock: Pelican Sales Rank: 71157 Time to Ship: Weight: 1. The same style of hydraulic tappets used on the M40 four cylinder engines released the same year were used on the V12. Visually examine the male and female terminals in the connector housing by removing them. Observe grinding stage of the crankshaft, refer to Technical Data: Ground sizes of crankshaft thrust bearing Standard mm 31.
Fuse 15 or Fuse 30 is blown. Align thrust washers with contact face of main bearing caps. Apply Stabilant 22A to both male and female terminals so they are saturated, and reconnect the connectors while they are still wet. Ignore the camshaft sensor fault codes if they are present. These values can provide a further insight into what has made the fault set.