LOCK-RIGHT™ Performance Locker Installation Manual Integral Carrier Axles—C-Clip and non-C-Clip Versions Typical of Spicer®, Jeep®, G.M.® 10-, 12-bolt, Ford® 8.8-inch, Toyota® L.C., etc. Introduction.................................................................................2 Background Information..............................................................3 Installations Covered....................................................................6 Preliminary Steps..................................
Introduction Welcome to the growing family of LOCK-RIGHT owners! This manual will help you install your new LOCK-RIGHT automatic 100% full-locking differential. When the installation is complete, your vehicle will have extreme traction! We trust that you will be pleased with its performance and thank you for your confidence in our products. LOCK-RIGHT installation simply involves disassembling and re-assembling the differential case, replacing a few parts in the process.
44 axle, use a thrust block between the inside ends of the axle shafts as a part of the end play adjustment. When installing a LOCK-RIGHT, this block is re-used along with the original axles so that the original end play adjustment does not change. However, if the original axles are changed to different original-type axles, the block will continue to be used but the end play must be re-adjusted (see the shop manual for the procedure).
The LOCK-RIGHT is designed to be used with a correct thrust washer under each coupler, and failure to use this washer is easy to observe during inspection and will void the warranty. A word about C-Clips: Many integral carrier differentials have the axle shafts retained by C-Clips. These are semi-circular pieces of hardened steel, similar to a washer with one side cut out, that fit into a groove in the end of the axle shaft and into a pocket in the side gear.
( ) = PARTS IN SOME MODELS THRUST WASHER COUPLER (SIDE GEAR) DRIVER STOP PIN; SPACER PINION SHAFT(S) (BLOCK) BIAS SRPINGS Figure 1 LOCK-RIGHT Exploded View 5 DRIVER COUPLER (SIDE GEAR) THRUST WASHER
d) Removing the tires; e) Disconnecting the brake lines and emergency brake cables; f) Pulling out one or both axles a few inches.
1. Perform the operations listed below and as described in your shop manual that apply to your vehicle. The axle shafts should be pulled out about six inches for differential case removal. 2. Using a center punch, mark both the carrier and bearing cap on the ring gear side with one punch mark each and on the other side with two marks. The caps are not interchangeable, because each one is line-bored with the carrier. These marks are very important to correct re-assembly! 3.
pocket in the side gear by the pinion shaft. “Bump” each tire inward slightly to free the clips; they will fall out to free up the internal parts. 4. For installations with the differential case in the vehicle, leave the ring gear side axle bolted in place; pull out only the other axle shaft about two inches. 5. Remove the spider gears, side gears, all washers, and axle shaft thrust block (if used in your assembly).
1. Thoroughly clean the differential case and wash remaining parts with solvent, then dry them. 2. Inspect the pinion shaft. Any noticeable grooves or galling may weaken it and can also adversely affect the operation of your new LOCK-RIGHT. If it is not in excellent condition, obtain a new one. 3. Inspect the side gear thrust washers. They are important to the correct positioning of the LOCK-RIGHT parts. If they are excessively worn or are cracked, obtain new ones.
3. Place a spacer into the center of each driver, wide end toward the teeth if not symmetrical (Figure 2). 4. Press a thrust washer (with grease added) onto the back of each coupler. 5. Insert a small spring into each of the large springs and add a little grease to the coils to hold them together. Set them aside.
1. Install a coupler and washer assembly in the ring gear end of the differential case (over the axle splines if in the vehicle). See Figure 3. Note that the couplers in some models may have flats for clearance. If an axle shaft thrust block is used, place it in the center of the second coupler now if the installation is being done in the vehicle. If not, it may be installed later. 2. Place the second coupler and washer assembly into the other end of the differential case (Figure 3). 3.
4. Important! Be sure to have the spacers correctly placed in the drivers before doing the following steps! Pick up one of the driver-and-spacer assemblies. Orient its teeth toward the ring gear flange and hold it so that the flats (if present) will clear the sides of the case. Place it on the teeth of the coupler and press it into the grease (Figure 4). Reach into the center and push the spacer down onto the coupler shoulder (and over the C-Clip, if so equipped). 5.
b) Place the other driver assembly in the differential case. Push it to the left, touching the other driver (Figure 5). c) Using the U-shaped wire between the driver and coupler teeth, push its spacer leftward into the center of the left driver to help hold it temporarily in place. d) Rotate both drivers with the left tire until the C-Clip installation recess in the right driver teeth is pointing out.
h) Rotate the right tire 1/4-turn until the C-Clip ends are pointing downward, so that it will not fall off. i) Rotate the left tire to position both drivers so that the large semi-circular recess in the right driver is facing out. j) Push the right driver to the right and into the grease in the coupler teeth. k) Through the semi-circular recess, push the right spacer to the right, over the C-Clip and axle shaft end.
Push on the bottom coils to be sure that the spring snaps in and is seated all the way. Rotate the drivers and do the same procedure for each of the other three pins and springs. 4. Reach in through the recesses with your fingers and be sure that the spacers are pushed outward onto the couplers. 5. Rotate the drivers so that the large recesses line up with the pinion shaft holes in the differential case. 6.
Figure 7 Install spring assemblies in holes Figure 8 Snap spring assembly into hole 16
Be sure to orient it so that its retaining pin hole will line up with the hole in the differential case (Figure 9). If the pinion shaft will not insert, or is hard to insert, be sure that the correct thrust washers are being used and that the spacers are oriented with the widest side (opening) fitting down over the coupler shoulder. Rotate the drivers and couplers back and forth to be sure that they are not binding. 8. Install the pinion shaft retaining pin.
Assembly of Differential Case Into Vehicle (thick ring gear; differential case was removed from vehicle) manual for the exact procedure. 6. Finish the installation of any remaining parts by reversing the order of disassembly—in general, the axles/backing plates, brake lines, emergency brake cables, and tires. If your vehicle uses an axle shaft thrust block, be sure that the correct axle shims are in place at the outer ends of the axle shafts. In these designs there should be little or no end play.
Use a light to see that the spacers (and thrust block, if used) are in place and that the springs are working properly. When the above installation steps are completed, all the parts should be in exactly the same positions as they were when the installation began. If the differential case has been removed from the vehicle, the backlash and pre-load settings should be unchanged from before and no further adjustments will be needed.
Vehicle Final Assembly Section 4: Tire Diameters When everything is correct, clean the axle housing gasket surface and install the cover using a gasket and/or sealant as appropriate, and torque the bolts. Add gear oil. Note that we suggest using medium-to-heavy oils as recommended by the manufacturer, unless the vehicle will be used in very cold weather.
Section 5: Testing Your Installation Section 6: Driving Your Vehicle 1. Be sure that the vehicle is safely blocked. Leave the axle assembly on the jack stands, with both tires free to rotate and the emergency brake off. 2. Put the transmission and transfer case in gear to lock the drive shaft. 3. Rotate one of the tires in the forward direction with your hand until it stops, then hold it. That side of the LOCKRIGHT is now locked. 4. Rotate the other tire in the opposite (reverse) direction.
piece of small wire (a paper clip works well) under the spring and pop the bottom out. Push the shear pin out of the pin hole and into the window hole. Repeat for the other three springs and pins. 4. Position the case horizontally and push in the spacers so that they are in the middle of the drivers. If a thrust block is used, push it into the right coupler splines. 5. Remove the driver and spacer opposite the ring gear flange first and then remove the second driver. 6. Remove the couplers.
10. Remove the driver and spacer opposite the ring gear flange first and then remove the second driver. 11. Remove the left C-Clip. 12. Remove the couplers. piece of small wire (a paper clip works well) under the spring and pop the bottom out. Push the pin out of the pin hole and into the window hole. Repeat for the other three springs and pins. 3. Move the right driver to the left, touching the left driver. 4. Move the right spacer to the left, into the center of the left driver.
IMPORTANT If your differential case or thrust washers are excessively worn, your new LockRight Locker may not be able to operate as it was designed. Therefore, two easy measurements must be made before final assembly to assure that your new locker will function properly. To make these measurements, proceed as follows: 1. Remove the existing spider gears, side gears and thrust washers from the differential case, and thoroughly clean it. 2.
WARNING! IMPORTANT INFORMATION Please Read Carefully •Check lube level between scheduled lube changes to insure that proper lube The following [WARNING!] and [CAUTION!] information is supplied to you for your protection and to provide you with many years of trouble free and safe operation of your Richmond Gear product. level is maintained. Inspect vent plug to insure it is clean and operating.
CAUTION! •Do not operate the transmission or ring and pinion without proper lube and correct amount.
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