Autotech 10.109.405K Vernier Timing Gear Mk4 2.0L Engines - Manual

A U T O T E C H
Installation Instructions
Phone 949.240.4000 Fax 949.240.0450 32240-E Paseo Adelanto, San Juan Capistrano, CA 92675
www.autotech.com
Part Number: 10.109.405K
Description: Vernier timing gear for Mk4 2.0L engines
Notes:
Our new vernier adjustment cam timing gear for the Mk4 2.0L engines consists
of an anodized 6061 T6 aluminum sprocket and an alloy steel hub and cover plate.
The proven vernier design allows for infinite incremental timing adjustment. It is possible
to adjust the timing in 1.5° increments simply by aligning the holes in both the hub
and sprocket at the desired position. There is no limit to the adjustment. A tool steel
lockpin secures your timing position, held in place by the steel cover plate. Once set,
this gear will not slip during use.
This type of gear is great for "degreeing" your camshaft to exact timing specs with no
danger of slippage once assembled.
Tightening Torques:
• M12 socket head bolt to camshaft:
74 ft.lbs. (100Nm) << Use Loctite® on bolt >>
• Nut on timing belt tensionroller: 15 ft.lbs (20Nm)
Tips:
a) To avoid timing errors, set the engine to TDC before removing the original sprocket, and
install your new timing gear while it is set to its stock timing position (see illus below and
next page). Cam timing may then be adjusted by turning the gear and selecting a lockpin
location.
b) The four (4) hash marks on either side of the TDC mark on the front perimeter of the
gear are each 1.5 degrees apart.
c) To install your new timing gear, follow factory removal and installation instructions. Timing
instructions are attached for your reference.
< note the reference marks:
this sprocket is shown with
the lock pin in its stock (zero-
change) position.
p 1/2