Mittler Bros Machine & Tool 1000-RENK1 REAR END NARROWING KIT - Manual

Division of Mittler Corp.
P.O. Box 110 Foristell, Missouri 63348
10 Cooperative Way Wright City, MO 63390
(636) 745-7757
Fax: (636) 745-2874
N:\Product\Product Documentation\1000 Rear End\Narrowing Kit Instructions\1000-RENK1 Instructions.doc Rev1 3-01-2006
1000-RENK1 REAR END NARROWING KIT
USE OF THIS TOOL REQUIRES BASIC MATH AND WELDING SKILLS
Kit Contents
1ea 1000-001-2 Alignment Shaft - 60" long x 1-1/2" OD
1pr. 1000-001-4 Outer Line Up Ford / Dana
1pr. 1000-001-5 Outer Line Up GM / Ford
1pr. 1000-002-1 Dana 60 Inner Puck 3.812"
1pr. 1000-002-4 Big 9” Ford / GM 12 Bolt Inner Pucks
1pr. 1000-002-2 Small 9” Ford / GM 10 Bolt Inner Pucks
1pr. 1000-002-8 Dana 44 / Chrysler 8-3/4 / 57-64 Olds Inner Pucks
1ea. 1000-004 Pinion Centerline Gauge
SAFETY
• Wear protective clothing suitable for welding.
• Use a welding helmet with the correct shade of filter lens.
• Be sure housings are properly cleaned and degreased to remove flammables.
• Welding sparks can cause fires or explosions. Have a fire extinguisher nearby.
• Breathing welding fumes can be hazardous to your health. Be sure to have adequate ventilation.
PREPERATION
1. Disassemble and clean housing. Use a good grease cutting solvent to remove the lube residue.
Follow this with warm soapy water, such as from the car wash.
a. On “Drop Out” style housings, such as 9” Ford, you must remove the “Drop Out” and then
clean the housing as described above. We recommend that you get a used “Drop Out”
from a junk yard and use this for your fixture case. This way you will only have minimal
work to re-setup your gears. Place the appropriate pucks into the carrier bearing locations.
Screw the bearing cap bolts finger tight. Slip the bar through the assembly and then tighten
the cap bolts. Remove the shaft.
b. On “One Piece” style housings, such as 12 Bolt & Dana, you will have to remove the ring
gear carrier assembly, be sure to keep track of any shims. With the ring gear carrier
assembly removed clean the housing as described above. Place the appropriate pucks
into the carrier bearing location. Screw the bearing cap bolts finger tight. Slide the bar
through the housing assembly and then tighten the cap bolts.
2. Determine the desired width, pinion offset and cut locations using the supplied work sheet. You
might want to make copies of the work sheet for future jobs. There is an example on the back of
the work sheet. This is a very critical step and care should be taken to get it right. Measure as
many times as needed to be sure that you have all the correct numbers before moving to the next
step.