Rivera Primo Brute III User Manual

HOME OF PRIMO®BELT DRIVES

INSTALLATION INSTRUCTIONS FOR PRIMO’s

BRUTE III

8mm - 1-3/4” Wide

FITS:

1986-2000

FXR, FLT & FLH

1986-89 Softails

QUALITY & PERFORMANCE SINCE 1973

BELT DRIVE

t 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! 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 any questions please call (562) 907-2600.

IMPORTANT SAFETY NOTICE....

When performi ng an y mot orcycle work such as inst all ing a b elt d rive, secure the motorc ycle in an u pright position with convenien t acces s to the primar y dr ive . If you are wor kin g wi th the moto rcycle on a lif t ma ke s ure it is securely fastene d to preve nt it from falling .

Strip the primary

Drain the primary case, remove both the inner & outer primary covers, & all OEM chain drive components from the primary chaincase. Thoroughly clean the inner & outer primary covers to remove all traces

of primary fluid. Pictured is a 1995 H arley -D a v i d s on Dyna-Glide primary.

Remove the factory bearing race from the transmission mainshaft using the Jims tool part # 34902-84.

Remove the battery prior to start ing the installation.

Install the sealed bearing (1018-0021)

Install Primo’s one-piece, sealed bearing included in the kit.

www.riveraprimoinc.com

2108-0001 Rev. 9/2014

nstall buttonhead Allen bolt

NOTE: Replace the OEM hex-head bolt (Dyna Glide only) with the button-head Allen bolt provided in the kit. TORQUE THE BUTTON-

EAD BOLT TO 29 FOOT POUNDS.

Early FXR models may need to have some material removed from the inner primary in the area indicated by the X’s. Check pulley/belt clearance here before tightening clutch hub nut.

UPDATED CLUTCH HUB INFORMATION

rimo’s new clutch hub uses a .120” thick

teel plate at the back of the clutch pack

eplacing the permanently attached alu-

inum backing plate of the earlier model

lutch hub. See drawing.

Install the .120” thick steel plate at the rear of the clutch pack as shown. The clutch pack can then be installed.

.120” thick Steel Plate plate first.

After installing the .120” steel drive plate, Install the rest of the clutch pack per steps 10 and 11.

Check pulley alignment with a straight-edge

Install front pulley. Install the rear pulley 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, however it may be nesecary to use less or more shim.

Check for proper belt clearance

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.

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 kit

Part # 2100-0066 Includes one each of .020”, .030”, .040”,

.050” and .100”

Check primary belt clearance here

This inner primary (Early Ev o) ha s had a tab re moved to allow belt clearance in the area indica ted. Most insta ll ations require some grinding on the outer primary webbing.

Friction Plate plate second...

Friction plate 2nd, then alternate steel, friction, steel, friction. The clutch plates should be installed in the same order as delivered. The clutch pack height is preset prior to shipment, & should not be altered without consulting a Primo technician.

Install the pressure plate

nstall the pressure plate as shown.

pply a generous dab of high

A quality anti-seize to each of the Pro-Clutch studs (as shown).

Install the locking tabs & retainer, & adjust the clutch.

Inst a ll t h e di a phra g m sp ring , spr i ng r e tain e r (b e vele d si d e in w ard agai n st the spr i n g) lock i n g t abs, and sho u lder e d n u ts as s hown . T IGH T E N T HE NUTS EQU A LLY U NTILTH E Y B O TTO M , & T HEN TIGH T EN T O 3 0 INC H PO U N DS OF TOR Q UE. B end a ta b o v er e ach nu t t o k e ep i t t ight ! S p ring ad just m ent (and c lutc h pack h eigh t ) is e s t abl i s hed p r ior t o ship p ing.

Clut c h adju s tmen t : Run th e c l utch c a b le all th e w a y out unt i l t he clu t c h leve r touc h es th e hand l ebar g rip. T hen r u n the c ente r adju s ting s crew i n unti l it to u ches t he pu s hrod , b ack i t out 1 / 4 tur n and t i ghte n t he j a m nut. Adju s t the cl utch c a b le fo r 1 /8” fr e e pla y. No te: B r aid e d c lutc h c able s requ i re li t tle o r no fr e e pla y.

Apply grease to the main-shaft splines

Apply a thin coat of grease to the splines of the transmission main-shaft to act as both a corrosion inhibitor, & lubricant. The grease also acts as a cushion for the splines on the transmission main-shaft during operation.

Install washer as needed.

A .100” washer may be needed behind the front pulley on some Dyna-Glide & Softail applications.

Install rear pulley & belt.

Install the rear pulley (clutch basket) & belt. Apply 2 drops of blue thread-lock to the main-shaft threads as shown. INSTALL THE CLUTCH HUB NUT (WITH SEAL), & TIGHTEN TO 70-80 FOOT POUNDS OF TORQUE. The center adjustment screw/sealed nut combination prevents transmission oil from leaking thru the main-shaft into the clutch pack.

Install front pulley, washer & inner/outer guides. Use 1-2 drops of blue threadlock on the threads of the motor shaft. INSTALL & TIGHTEN NUT TO FACTORY SPECS (150-165 FOOT POUNDS) using a quality torque wrench or air impact driver.

Belt s houl d h ave 3 / 4”-t o -1” o f u p & do w n play w hen the d r ive t r a in is co l d. Re - i nst a l l the o u ter p r imar y cove r an d che c k b e l t c l eara n ce. I nsta l l a louv e red o r v ent e d de r by o r in s pect i on c o ver, a n d yo u ’re read y to ride . C h eck be l t t e nsio n a f ter th e driv e t r ain re a ches no r mal op e rati n g t empe r atur e . T h e b elt sh o uld feel s nug b u t not e xces s ivel y t igh t !

AT T EN T I ON!

BELT SHOULD HAVE

1/2” - TO - 1” UP & DOWN

PLAY WHEN THE DRIVE

TRAIN IS COLD!

Always check the clearance between the OUTER PRIMARY COVER, & the belt drive assembly PRIOR TO OPERATING THE MOTORCYCLE with a new belt drive, particularly with 95 and later motorcycles.

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