Fastener Tightening Specifications - Crankshaft Balancer

This article has been updated with bulletin No.: 57-61-34A.

NEW HARMONIC BALANCER INSTALLATION

1996 model year engines are equipped with a smaller diameter M14 crankshaft balancer bolt, which replaces the larger M18 bolt. Since this new bolt is smaller in diameter, Kent Moore tool number J 39344 is no longer used on 1996 model engines. A new harmonic balancer tool J 41998 is now available and must be used whenever installation of the harmonic balancer is necessary. This new bolt has a revised torque specification of 50 Nm (37 lb ft) plus 120° for installation.

IMPORTANT: A small number of 1995 engines were built with crankshafts equipped with the M14 bolt. Identify the size of the bolt to determine the proper torque specification.

M18 Bolt

^ 60 N.m (44 lb. ft.)
^ Balancer bolt must be tightened an additional 120°. Mark the balancer bolt head in line with the centerline of one of the balancer legs.
^ Make another mark along the centerline of the next balancer leg clockwise from the previous mark (120°).
^ Tighten balancer bolt until mark on bolt head is in-line the next balancer leg clockwise from starting point. A torque multiplier may be required.