Tractech Detroit Soft locker Install in a Land Rover differential

Detroit01.jpg (45427 byte)

Step 1:
Unscrew the diff drain plug with a 1/2" square wrench and drain the oil. Bring your exaust oil to the closest center for safe recycling.

Detroit02.jpg (60475 byte)

Step 2:
Remove the 5 bolts on the left axle flange using a 17 mm wrench. Be aware there is Loctite on the bolts. Repeat on the right side.

Detroit03.jpg (47457 byte)

Step 3:
With a rubber hammer separate the axle flange from the hub.

Detroit04.jpg (57320 byte)   Detroit05.jpg (55428 byte)

Step 4:
Remove the axle shafts playing attention not to damage the splines.

Detroit19a.jpg (76759 byte)   Detroit19b.jpg (81912 byte)

Step 5:
Provide for a complete cleaning using thinner or other good product for degreasing and put the differential under an hydraulic press to fit the new carrier bearings. Part # for Timkens are LM102949 and LM102910 (2 of each per set). Lubricate them and the carrier shafts on the differential using transmission oil. Put the bearing in position (the bigger diameter has to face the diff) as much parallel to the hydraulic press as possible. Use a piece of copper or brass to interpose between the bearing and the press. Press the bearing until it will perfectly touch the differential carrier. Repeat the procedure for the opposite side.

Detroit06.jpg (59744 byte)

Step 6:
With the differential on the bench make sure for proper match between axle splines and diff flange.

Detroit07.jpg (58636 byte)

Step 7:
Driveshafts are factory balanced but avoid vibrations is a good rule: mark the allignment between driveshaft and pinion for future perfect and balanced reinstall.

Detroit08.jpg (74131 byte)

Step 8:
A 9/16" and a 14 mm wrenches are needed for bolts and nuts that couple the driveshaft to the pinion. Tight the driveshaft out of the way where it won't interfere with the third member extraction.

Detroit09.jpg (70457 byte)

Step 9:
A 14 mm wrench is needed to remove the 10 nuts that secure the third member to the axle casing. Cross unscrew (180) the nuts.

Detroit10.jpg (77134 byte)

Step 10:
An hidraulic jack will help to start separating the third member because of the factory sealant. Not exceed lifting to prevent damages to the studs on the axle casing. Once the third member separation has started pull forward. Consider the complete assembly is very heavy and precautions have to be taken to avoid injuries and damages.

Detroit11a.jpg (79662 byte)

Step 11:
Secure the third member to an heavy duty vise by tightening it from its wings. Take care not to hit the pinion flange. Clean the unit and remove accurately all of the factory sealant. Use a blade if necessary but avoid to scratch the surface.

Detroit12.jpg (82988 byte)   Detroit12a.jpg (79661 byte)

Step 12:
Remove the roll pins that hold the bearing adjustment nuts. Do not totally remove them since it's necessary just to lift them that bit to allow the bearing adjustment nut to rotate.

Detroit14.jpg (45872 byte)   Detroit14a.jpg (86953 byte)

Step 13:
Mark each carrier bearing cap since they are specific for a given side. Unscrew the 4 bolts with a 19 mm wrench. Now it's possible to remove the bearing nut with the proper tool. Remove then completely the 4 bolts and the bearing caps.

Detroit13.jpg (83378 byte)   Detroit13a.jpg (85706 byte)   Detroit15.jpg (84660 byte)


Detroit16.jpg (84263 byte)

Step 14:
Lift the entire differential from the pinion housing. Play attention to the bearing cups cause they are free to fall.

Detroit17.jpg (83361 byte)

Step 15:
Put two softer (lead or alluminium) sockets on the vice. Do not tight too much the vice to avoid to make oval the diff case.

Detroit18.jpg (85484 byte)   Detroit18a.jpg (93642 byte)

Step 16:
With a 14mm wrench remove the bolts that secure the ring to the diff. Cross untight the bolts (180) to avoid ring's deformation. Gently tap the ring with a rubber hammer until it separates from the differential. Hold the ring and avoid to touch it against the vice.

Detroit19.jpg (77510 byte)

Step 17:
Put the components on the bench and clean them. You can now apply some kind of sticky grease on the stock differential, wrap it in oily paper and store it in a low humidity place. You might need this differential in the future and oxidation has to be accurately avoided.

Detroit20.jpg (79847 byte)

Step 18:
Detroit differential ready for installation.




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