1985 BMW 635CSI. I have to replace the distributor rotor (the old type) by the new type, including an adaptor and the new three bolt rotor. How can I remove the old rotor? I tried to just pull it, but it did not work out.

Bmw 635csi

for the easy solution download the pdf file

Easy. Set engine on TDC with distributor rotor pointing at #1 plug wire. Remove holdown bolt, disconnect small wires and remove cap and slowly lift distributor up paying attention to how the rotor moves as you lift. Note position of vacuum advance and make a mark on engine where rotor is pointing as you remove dizzy. On new distributor, rmove cap and turn rotor to match the mark you made from old rotor position. Install new unit with vacuum advance similar to the old one and rotor at correct position, and as you lower unit into place insure that rotor points same as old one did before you started removing it. The one other major issue is that a points style distributor has a supply wire with either a built in resistor, or a separate resistor inside the coil. The new unit needs full 12 volts to supply it so no resistor is used. If the old unit had a coil with internal resistor and your new unit has the coil in the cap, no change needs to be made. However if the old unit used an external resistor coil, you must now run a wire from the ignition switch "on" position directly to the distributor to supply full 12 volts. All of this depends on what you are working on so now don't you wish you had told us that?

Remove the distributor cap. Mark the location where the rotor is pointing by making a scratch mark on the distributor housing. Remove the distributor adjusting bolt and bracket. Remove the distributor. Replace with the new distributor by placing the rotor on the shaft and turning the shaft until the rotor aligns with the same place as the mark on the old one. Install the bolt and tighten. Start engine. If your engine does not run, remove the bolt and distributor and turn it 180 degrees and replace.

1985 Pontiac Fiero 2.5 liter L4





1985 Pontiac Fiero 2.8 liter V-6





Hope this helps (remember to rate this answer).

Based on wikipedia...yes. From 1988-1993. I copied and pasted the information below:

M30B35

• 3.4 liter (3430 cc) SOHC inline-6 cylinder
• 9.0:1 compression ratio
• 208 bhp / 211 PS @ 5700 rpm
• 225 ft·lbf (305 N·m) torque @ 4000 rpm
• 87 AKI / 91 RON octane fuel or better recommended

Applications:

• 1988-1989 E24 635CSi
• 1988-1993 E34 535i
• 1988-1992 E32 735i

3.5 L M90 (3453 cc) Applications:

• 1978-1983 E24 635CSi
• 1980-1981 E12 M535i

FIRST OFF REMOVE DISTRIBUTOR CAP THEN REMOVE ROTOR
DISCONNECT TWO CONNECTORS GOING TO DISTRIBUTOR
UNBOLT THREE RETAINING BOLTS AND PULL DISTRIBUTOR OUT
PLACE NEW OR USED DISTRIBUTOR IN THE SAME WAY OLD ONE CAME OUT
RESECURE BOLTS AND INSTALL ROTOR AND CAP

Removal & Installation 2.2L Engine To Remove:

1. Lift the vehicle.
2. Remove or disconnect the following:
   • Right wheel and tire assembly.
   • Camshaft position (CMP) sensor electrical connector.
     
     
   • Bolt and CMP sensor.

To Install:

1. Install or connect the following:
   • Camshaft position (CMP) sensor and bolt.
     1. Torque to: 7 ft. lbs. (10 Nm)
   • CMP sensor electrical connector.
   • Right tire assembly.
2. Lower the vehicle.

4.3L Engine To Remove:

1. Remove or disconnect the following:
   • Spark plug wires and ignition coil wire from the distributor 4.3L Distributor CMP electrical connector
     
     
   • Camshaft position (CMP) sensor harness connector from the distributor
   • Distributor cap screws 4.3L Distributor cap removal
     
     
   • Distributor cap 4.3L Distributor rotor screws removal
     
     
   • Rotor screws
   • Rotor
   4.3L Align reluctor wheel slot with CMP
   
   
2. Align the square slot in the reluctor wheel with the CMP sensor 4.3L CMP sensor screws removal
   
   
3. Remove or disconnect the following:
   • CMP screws 4.3L CMP sensor removal
     
     
   • CMP sensor

To Install:
NOTE: Do not use the old cap, CMP sensor, and rotor screws. Use the replacement screws that have been coated with a thread locking compound.

1. Insert the CMP sensor through the reluctor wheel slot
2. Install or connect the following:
   • New CMP mounting screws and tighten the screws
     1. Torque to: 19 inch lbs. (2 Nm)
   • Rotor onto the reluctor wheel
   • New rotor screws and tighten the screws
     1. Torque to: 18 inch lbs. (2 Nm)
   • Distributor cap
   • New distributor cap screws and tighten the screws
     1. Torque to: 21 inch lbs. (2.4 Nm)
   • CMP sensor harness connector
   • Spark plug wires and ignition coil wire
3. Test drive the vehicle to confirm the repairs

You need to mark in 2 places. With the cap off mark the position of the rotor button on the distributor housing first. Then you need to make a mark on the distributor housing that will line up with a mark on the engine itself.
When you put the distributor back in back the rotor button up before you put it in because the cam gear will turn it ahead as it seats. For example, if the rotor button is at 3 o'clock then back it up to 1 o;clock.
Don't force the distributor down at the end because you can damage the end that drives the oil pump. Fidle and wiggle it as you push and it should line up and drop onto the oil pump. Also DON'T turn the engine over while it's out or you will have to retime the engine. Hope this helps.

1. Disconnect the negative battery cable. Drain the cooling system.
2. Remove the distributor cap and rotor. Remove the rotor adapter, the dust shield and the distributor housing.
3. Remove the fan. The fan must be held stationary with tool 11 5 030 or some sort of flat blade cut to fit over the hub and drilled to fit over 2 of the studs on the front of the pulley. Remove the fan coupling nut; left hand thread-turn clockwise to remove.
4. Remove the belt and pulley.
5. Remove the rubber guard and distributor and or upper timing belt cover.
6. Compress the timing tensioner spring and clamp pin with the proper tool.

Observe the installed position of the tensioner spring pin on the water pump housing for reinstallation purposes.

1. Remove the water hoses, remove the 3 water pump bolts and remove the pump.

To install:

1. Clean the gasket surfaces and use a new gasket.
2. Install the water pump in position. Note the position of the tensioner spring pin. Torque M8 bolts to 16-17 ft. lbs. (20-24 Nm) and M6 bolts to 6-7 ft. lbs. (8-10 Nm). Connect the hoses.
3. Release the tensioner from the holding pin. Install the upper timing cover. Install the pulley and tighten the bolts to 6-7 ft. lbs. (8-10 Nm). Install the belt and tighten.
4. Install the fan, distributor housing and dust shield. Tighten the rotor adapter to 39-47 ft. lbs. (55-65 Nm). Install the rotor, O-ring and cap.
5. Add coolant and bleed

remove disturbutor cap mark where rotor is and mark position of dist, remove bolt holding dist, pull dist out. now install new one but make sure rotor ends up pointing in exact poistion as old and dist is postioned they same. good luck.