BRUTE III EXTREME TM
ENCLOSED BELT DRIVE
INSTALLATION INSTRUCTIONS
11mm 1-3/4” Wide
Fits 1990-2006 Softail®
Models
&
1990-2005 DynaGlide®
Models
It is common knowledge that a belt drive primary provides advantages & service that a standard chain drive primary cannot. For dependable, high-performance, long lasting service nothing beats a modern Primo® primary Belt Drive! A long standing tradition of ”Quality & Performance” has made Primo® Belt Drive systems the most popular in the world! That same quality & performance is now available in the Brute III EXTREMETM belt drive for Evolution Big-Twin and Twin Cam motorcycles (fully enclosed primary drive). The wet clutch nightmare is over, no more leaky primary, no more draining the primary for inspection or maintenance. Carefully read & follow these instructions for a quick, convenient installation. If you have questions call (562) 907-2600.
IMPORTANT SAFETY NOTICE....
When performing any motorcycle work such as installing a belt drive, secure the motorcycle in an upright position with convenient access to the primary drive. If you are working with the motorcycle on a lift make sure it is securely fastened to prevent it from falling.
Remove the battery prior to starting this installation.
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Strip the primary |
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Install the sealed bearing (PP-216) |
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Drain the primary case, remove both the inner & outer pri- |
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mary covers, & all OEM chain drive components from the |
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primary chaincase. Thoroughly clean the inner & outer pri- |
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Install Primo’s one-piece, sealed bearing included in the kit. |
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mary covers to re- |
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move all traces |
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of primary fluid. Pic- |
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tured is a 1995 Harley- |
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Davidson® Dyna-Glide |
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primary. Remove the |
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factory |
bearing race |
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from the transmission |
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mainshaft using |
the |
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Jims |
tool part |
# |
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34902-84.
www.riveraprimoinc.com |
2108-0020 |
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Install Allen head bolt |
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NOTE: Replace the OEM hex-head bolt (Dyna Glide only) with the button-head Allen bolt provided in the kit. TORQUE THE BUTTONHEAD BOLT TO 29 FOOT POUNDS.
Check pulley alignment with a straight-edge
Install front pulley (together with
front inside guide plate) & rear 4 pulleys without the belt & check alignment as shown(straight
edge flush with rear of ring-gear lines-up with outer edge of front pulley) remove pulleys and proceed with installation. If alignment isn’t satisfactory see photo 8. The provided .100” washer can be used to space the front pulley outward as needed.
Shims are manufactured from high quality steel, precision ground for parallel & flat surfaces to ensure perfect pulley alignment. Correct pulley alignment & correct belt tracking are a must for long belt life. These shims make pulley alignment easy. Shims are available in .020", .030", .050", .075" &
.100” thick dimensions, or sets of "one-of-each.”
Optional pulley shims, PART # PX-1
Includes one of each
.020”, .030”, .040”,
.050” and .100”
Check for proper belt clearance
5
After ensuring proper pulley alignment, again check the areas indicated in the photo for belt and/or pulley clearance. Always check rear-pulley and belt clearance here before operating the motorcycle.
Check primary belt clearance here
5A
This inner primary (Early Evo) has had a tab removed to allow belt clearance in the area indicated. Most installations require some grinding on the inner and outer primarys.
Apply grease to the main-shaft splines |
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Install rear pulley & belt. |
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6 |
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5B |
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Install the rear pulley (clutch bas- |
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Apply a thin coat of the special |
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ket) & belt. Apply Rivera blue |
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Primo grease supplied in the kit |
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thread lock to the main-shaft |
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to the splines of the transmis- |
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threads as shown. INSTALL THE |
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sion main-shaft to act as both a |
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CLUTCH HUB NUT & TIGHTEN |
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corrosion inhibitor, & lubricant. |
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TO 70-80 FOOT POUNDS OF |
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The grease also acts as a cush- |
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TORQUE. (The center adjustment |
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ion for the splines on the trans- |
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screw with o-ring will prevent |
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mission main-shaft during |
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transmission oil from leaking thru |
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operation. |
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the main-shaft into the clutch |
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pack). |
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Install washer as needed.
A .100” washer may be needed behind the front pulley on some Dyna-Glide & Softail applications.
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8 |
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7 |
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Use thread-lock here. |
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Install front pulley, washer & inner/outer |
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guides. Use 1-2 drops of blue thread-lock |
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on the |
threads of the motor shaft. IN- |
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STALL & TIGHTEN NUT TO FACTORY |
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SPECS (150-165 FOOT POUNDS) using a |
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quality torque wrench. |
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www.riveraprimoinc.com
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