DIVERSIFIED MACHINE INC. 2020 PRODUCT GUIDE
Important CT-1 Information
EDM Ring Gear
EDM ring gears decrease weight and increase flex. Ring gear bolts should be replaced and torqued to 60ft. lbs.
using blue threadlocker every 500 laps when using an EDM ring gear. EDM ring gears are not recommended in
high horsepower (800+) applications.
Angular Contact Pinion Pack
Angular contact pinion packs are available in place of standard issue Timken® tapered roller bearings. Angular
contact pinion packs offer a 33% reduction in drag when NEW. After two races tapered rollers are just as free and
offer superior strength. Angular contact pinion bearings require frequent inspection. Check play by grabbing pinion
shaft, if play is present the bearing pack needs to be replaced. Timken® tapered roller bearings are perfect for this
application and virtually bullet proof. Angular contact bearings WILL need to be replaced sometime. Choose the
pinion bearing that’s best for you.
Accelerated Surface Finishing is an isotropic superfinishing process that hones and refines the critical surfaces of
components. This is not a plating or coating process, but a true substrate surface enhancement that dramatically
increase part life and performance.
BULLDOGREARS.COM | 717.397.5347 | DIVERSIFIEDRACING.COM 17
All bearings are available with PROglide treatment. PROglide provides friction reduction. Utilizing nano
particles that act as sponges for oil PROglide has achieved unimaginable results. The process adds no
tolerance to the material being treated therefore the limits are nearly endless. Are you ready to ride the
Glide?
Loaded Pinion Removal
Heat area around the pinion until the pinion is able to freely be removed.
DO NOT concentrate heat around the pinion nose bearing.
Loaded Pinion Installation
Heat area around the pinion until the pinion freely drops in to the center.
DO NOT concentrate heat around the pinion nose bearing support.
Closed Tube Rear Set-Up
After installing pinion allow rear to return to room temperature. (70° F) Adjust pinion nut until 25 in/lbs rotational
preload is achieved without spool. Lubricate Posi retainer O-ring and install Posi-Lock retainer on pinion nut
using finger pressure only. Rotate retainer if needed to align locking splines. Attach right sidebell to center using
three installed studs. Torque to 35 ft./lbs. Rotate right side down and install loaded spool with check bearings and
recommended starting shims (See page 16 under Important Specs). Install left side bell and torque three studs
to 35ft/lbs. Verify pinion backlash to be .004-.008 minimum when checked on 10 spline tooth of pinion, using
dial indicator. Adjust spool shims accordingly until desired amount of pinion backlash is achieved. Once desired
amount of pinion backlash is achieved, verify rotation pinion preload to be 35 in/lbs. with spool installed. Once set-up
is complete, remove side bells. Install side bell o-rings and install spool seals utilizing red loctite. Remove spool
checking bearings carefully while maintaining shim stacks. Install spool bearings using press. Re-install right side
bell, bell and tube spool seal. Drop Spool into center. Lube left spool seal and install bell with ring gear back stop
in place. Torque side bells to 35 ft/lbs. Tighten ring gear backstop against ring gear and back off 1/8 turn. Jam ring
gear backstop nut. IF YOU DON’T KNOW - CALL!!!!