Powertrax RING AND PINION SET - Manual

IMPORTANT!
INSTRUCTIONS FOR RING AND PINION SET INSTALLATION
RICHMOND GEAR™ HIGHLY RECOMMENDS THAT YOU READ THIS SET OF INSTRUCTIONS COMPLETELY
BEFORE BEGINNING THE INSTALLATION OF THIS NEW GEAR SET. CORRECT INSTALLATION CAN BE THE
DIFFERENCE BETWEEN A SAFE EXTENDED GEAR LIFE…OR PREMATURE FAILURE.
1. Remove the old gear set and thoroughly clean
both the ring gear carrier and rear end housing with
solvent. After cleaning, air dry all parts and inspect
all components for damage.
2. Verify you have purchased the correct gear ratio.
This can be checked by dividing ring gear tooth count
by the pinion tooth count.
e.g. RING GEAR TOOTH COUNT – 35T
PINION GEAR TOOTH COUNT – 10T
35 ÷ 10 = 3.50:1
3. Many differential cases have many thousands of
miles of service. Check all threads in the case for
wear. It may be necessary to chase the threads with
an engineering tap to clean and align the threads.
When changing case bolts, check to make sure they
are not too long and bottom out in the ring gear.
4. Check side bearing adjusters as they are often
warped and out of shape, making ring and pinion
settings difficult. Replace as necessary.
5. Check the backside face of the ring gear for flat-
ness. Generally, after heat treating there may be a
degree of taper. This may be rectified by lapping
gear with sand paper on a glass flat plate. This will
give you a more even and uniform pattern when set-
ting up your new gear set.
6. Careful attention should be given to blueprinting
your differential. Accurate clearance will lead to a
longer life for your unit. The same care and detail as
used in engine assembly should be exercised.
7. All new parts should be thoroughly cleaned be-
fore assembly and checked for damage. Pinion bear-
ings should never be removed from the old pinion
and refitted to the new pinion as this may void any
warranties. Always install new bearings.
8. Examine the ring gear mounting surface for nicks
or burrs which might prevent a flush mounting of the
newly installed ring gear. Ring/Pinion tooth depth
variations can result from a ring gear that is “cocked”
on its mounting surface. If a ring gear spacer is to be
used, also check it for surface imperfections. Nicks
or burrs can be removed by using block-backed grit
paper or a small file. Following material removal,
rewash in solvent and air dry. Mount ring gear. Loc-
tite® ring gear bolts and torque to factory specifica-
tions.
9. All ring gears and pinions have been “LAPPED” in
sets and should never be mixed with another ring
gear or pinion. Check to see that serial numbers are
the same on the ring gear and pinion.