|MINI Cooper |
OEM Part Number:
11 23 7 525 135
Harmonic Vibration Damper
Part Number 300635
Tools You Will Need:
First you will need a three point puller. We have specially designed one for this job. One extension (spacer) rod to place inside the crankshaft hole. A standard 1/2 inch drive breaker bar for leverage & one 3/8 inch drive ratchet with a 12mm socket. In the video we show how to remove and install the balancer pulley on a demo engine, while this project is designed to be performed on an engine still in the vehicle from underneath the passenger fender well once removed.
Closer Look: Installing the 3 point puller.
After the spacer is placed into the center hole of the crankshaft, you will install the three point puller by "Hand Tightening" the three 6mm bolts until they are seated all the way down. The puller has a threaded extra long center bolt and spacer to pull off the balancer pulley pressed on to the crankshaft.
How to pull off the damaged balancer pulley:
Place the 1/2 inch breaker bar into the square hole of the puller, and the 3/8 inch ratched with 12mm socket on the extra long center bolt with spacer. Pull OFF the damaged balancer by rotating the center bolt clockwise and holding the breaker bar to keep the balancer pulley from turning.
How to install the New BMP balancer pulley:To install the new balancer, first you will need to center it up on the crankshaft, and install an extra long 12mm bolt with a spacer. After the balancer pulley gets closer to the end you will need to switch to the factory bolt and torque it to factory specifications to finish the installation. The pulley must be held tight and not allowed to turn while rotating the wrench/ratchet clockwise at this time. You will feel the balancer pulley seat at the bottom of the crakshaft and the installation will be completed.
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