This Mustang Parts Installation Guide Works For
Installation Time: 2 Hours
!!! PLEASE READ THE FOLLOWING INSTRUCTIONS CAREFULLY PRIOR TO INSTALLATION !!!
Installation of the crank pulley spacer will require longer bolts. Use Grade 5 or better bolts with blue Loctlte thread sealer (or equivalent).
Check pulley sheave alignment between crank and accessory pulleys with a straight edge. Production tolerances and small variations in pulley sheave offset over the years may require so e trimming of the spacer to achieve good alignment with the existing pulleys.
It the spacer is much too short or too long, you need a different spacer. Currently available spacers trom Ford Racing are as follows:
M-851 0-8351 .950"
M·851 0·0351 .909"
The accessory drive belt can now be installed using standard procedures.
It an M-8511-A351 (PS only) or M-8511-B351 (AC & PS) bracket is also being installed, a new belt length will have to be determined at this time. With the new bracket installed and sheave alignment checked, the proper belt length can be determined by using a "exib\e tape measure. A tailor's tape measure works best. Wrap the tape measure around the crank and accessory pulleys following the path the production belt used. Remember to have a helper hold the tensioner at the midpoint of its travel when measuring for belt length. Serpentine accessory drive belts are available from Motorcraft and other sources in a large variety of lengths. On installation, make sure the belt has tension and tracks properly on all pulleys as the engine is rotated by hand.
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