| Project
Samurai EZ Locker Install
In preparation for the C ALMINI trip to the Rubicon,
Eddie has been working diligently to bolt on as many of his
new performance accessories as time would allow. Detroit
E-Z lockers are being installed this month.
"Although most models of the e-z
locker can be easily installed by the owner who is mechanically inclined
and has the vehicle--maker's Service manual available, Tractech recommends
that a certified driveline mechanic perform the install in that tools of
the trade are helpful".
Read and follow the vehicle manufactures
instructions for:
- Blocking and jacking up the vehicle
- Pulling axle shafts
- Removing the bolt--on carrier
- Removing the ring gear
- Measuring backlash
- Preserving or replacing bearings marking
everything as left - right.
- Separating ring gear from differential case
marking across both parts to maintain location at reassemble.
- Removing standard differential components.
- Inspecting and washing all parts to be re-used;
replacing worn parts.
Operation:
The e-z locker is designed to let your
vehicle operate when one wheel loses traction -- even if it leaves the
ground. Unlike a standard differential, the Detroit E-Z Locker
differential prevents a low--traction wheel from spinning which greatly
reduces drive torque to both wheels.
The Detroit E-Z Locker differential
replaces standard pinion gears, side gears (rear only) and the cross pins

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Parts included in kit:
- Spring and cap
- Spacer
- Dowel pin
- Clutch
- Side gear
- Cross pins
Tools and Parts:
- RTV type sealant
- 80w-90 gear oil
- Slide hammer
- Sockets
- Wrenches
- Torque wrench
- Dial indicator
- Oil seals
Vehicle Performance:
- "Turning" is different. The outside
wheel is coasting; the inside wheel is driving the vehicle.
- You may hear sounds of the components
disengaging and re-engaging, or of the outside side gear teeth
passing over the clutch teeth -- especially in cold weather when
the lubricant is thicker.
- You may feel the transfer of torque from both
wheels to one wheel and back again; or hear tire
"chirp".
- You may feel pull on the steering wheel going
from drive to coast and visa versa -- especially on slippery
ground. Make turns using slight throttle rather then
coasting.
- "Straight" is different. Your new
differential takes about 1/4 - 1/2 of a wheel rotation to allow it to
operate. This causes a slight delay going from drive to coast and
coast to drive. Small steering corrections may unlock one wheel or the
other.
- You may feel steering pull.
- You may feel slight sideways movement.
- On a slippery surface, or downhill, slow down
with the engine first, then the brakes.
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E-Z Locker Kit Installation
This installation is on a 86 - 88 Samurai. Newer
models are similar, but bolts sizes vary.
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Support the truck and remove the
wheels.
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Remove the 4 nuts, lock washers and the
brake drum. This may take a slide hammer.
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Disconnect the brake line and E- brake
fittings. Soak the fittings with a penetrating oil and rock the fitting
back and forth to prevent breakage.
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Remove the 19 mm drain plug bolt and
the 17 mm fill plug bolt and drain the old gear oil into a suitable
container.
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Remove the four 12 mm (1986 - 1988)
bolts on the propeller shaft. Tie the drive shaft up out of harms
way.
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Loosen and remove the 12 mm bolts that
hold the carrier assembly to the axle housing.
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There are four 12 mm nuts and bolts
that hold the backing plate to the axle. Remove these bolts and break the
seal between the axle and the backing plate.
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Carefully remove the axle from the
housing. There is an axle seal protector just inside of the seal. Hope you
bought new seals when you purchased your locker. It would be a shame not
to change them at this point. You will need a slide hammer to remove the
axle and bearing. Check for worn axle bearings especially on the long
axle.
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To break the seal on the differential
position your floor jack under the propeller shaft flange and apply
pressure on the housing until the housings separate. There is no good way
to hold it up, I let the pig rest on the jack and pull both jack and
differential out from under the truck at the same time.
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Mark the carrier bearing caps. It is very
important to maintain correct side to side placement of all parts!
The carrier is held in place with four cap bolts. The
adjusters are retained with two 12 mm bolts. Loosen the adjuster bolts.
Loosen and remove the 4 large bolts for the carrier. Remove the carrier
from the housing to the work bench.
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Mark the carrier bearings. It is very
important to maintain correct side to side placement of all parts!
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Remove the ring gear for access to the cross pins.
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Mark the carrier top and bottom, remove
the cap bolts and the top cover.
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Remove the top side gear. Note the
position of the shim, remove the shim for use on the new side gear.
Maintain the proper side to the gear.
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Pull out the cross pins, center spacer
and side gears . Clean carrier and bearings. For easier
assembly coat all parts with grease.
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Install the shims removed in a earlier
step to the side gears. Place the side gear and thrust washer into the
flanged half of the case.
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Grease the springs, spring caps and dowels.
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Place a clutch and spacer on top of the side gear. Insert
spring cap assembly into each of the elongated holes in the clutch, with
cap facing out. Insert a dowel pin onto each of the two round holes of the
clutch. Repeat for second clutch.
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Install the stock spacer and three cross pins.
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Install 2nd clutch and top side gear with shim.
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Test the fit of the clutch assembly. Make sure there is
free movement in the springs and dowels.
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Replace the cap screws re-aligning the match marks made
during disassembly. Use a quality thread locking compound.
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Install ring gear.
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Install carrier.
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Detroit E - Z Locker Kit
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Complete the assembly according to the vehicle / axle
manufactures instructions.
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Attaching the ring gear, assembling ring gear into the
carrier case.
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Gleaning surfaces and inside of axle housing.
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Checking backlash, shimming as required.
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Torque bearing caps.
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Re-install axle shafts and back plates.
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Adding gear oil and test drive.
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