Hi can someone please tell me if the crankshaft pulley bolt on a BMW 2001 318 injection m43 engine is a left hand or right hand thread

It should be left hand thread, loosens when turned anti clockwise

right thread but the torque its 600 psi and need special tool to remove

There's nothing mentioned in the repair section that the bolt is not standard right hand thread. You could check with a GM dealer to make sure.

It is a normal right hand thread.

I’m happy to assist further over the phone at https://www.6ya.com/expert/jeremy_d728a59f986299fa

the bolt will turn opposite direction of your engines rotation. so if when setting the timing your manual tells you to crank your engine clockwise then you will need to rotate the bolt clockwise to remove it. you will need a huge belt wrench or a reverse socket in order to keep the engine and pulley from moving so you can crack the bolt. if the transmission is not attached to the engine at this point you may be able to use a crowbar to prevent the flywheel from turning and stop engine rotation that way. goodluck

The crankshaft pulley bolt loosens by turning Counter-Clockwise. Ensure the pulley is secure from movement so that you can loosen the pulley bolt without turning over the engine. You may need to use breaker bar to loosen the pulley bolt, or at least a large wrench.

I’m happy to help further over the phone at https://www.6ya.com/expert/jeremy_69f3cc28d95bf514

Welcome to FIxYa.com

Remove Harmonic Pulley

If necessary, remove drive belt and belt pulley for the air

conditioning compressor.

Remove drive Belt or alternator, refer to Drive Belts, Mounts,

Brackets and Accessories.

Attach Special Tool II 2 150 in conjunction with Special Tool il

2410.

Note:

Protect engine bracket from damage.

Insert wood between engine support and Special Tool 11 2

150.

Unscrew central bolt.

Replace crankshaft radial sealing ring, refer to Front Crankshaft

Seal, Service and Repair.

Installation:

Position the vibration damper in such a way that groove and

Woodruff key are aligned.

Replace central screw.

Tightening torque, refer to Engine. Specifications.

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Regards, Lee Davidian

TURN CRANKSHAFT BOLT COUNTERCLOCKWISE TO LOOSEN. YOU HAVE RIGHT HAND THREADS.ENGINE TURNING CLOCKWISE.YOU NEED A STRAP WRENCH HOLD CRANKSHAFT PULLEY WHILE LOOSEN IT.BUT YOU NEED A CRANKSHAFT DAMPER REMOVAL TOOL.OR HARMONIC BALANCER REMOVAL TOOL.YOU NEED STRAP WRENCH TO HOLD CRANKSHAFT PULLEY WHEN TIGHTEN IT.TORQUE CRANKSHAFT PULLEY BOLT 90 - 98 FT LBS. MAKE JOB EASIER.HAVE A HELPER HOLD STRAP WRENCH WHEN YOU LOOSEN OR TIGHTEN CRANKSHAFT PULLEY.

The bolt in the middle is usually counterclockwise. Standard thread removal.

timing belt alignment and crankshaft pulley