LOCK-RIGHT™ Performance Locker Installation Manual Removable third member axles—one-piece case, 2-pinion differential Typical of Toyota®, Nissan®, Isuzu® models Introduction.................................................................................2 Background Information..............................................................3 Installations Covered....................................................................5 Preliminary Steps...........................................................
manual for reference to instructions about axle removal, torque values, settings, clearances, etc. that apply to your particular vehicle. Our manual is a general guide to operations but does not contain specific information for each vehicle. We suggest that your first installation be done in the rear axle.
as a part of the end play adjustment. When installing a LOCKRIGHT, 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). If the axle is changed to another type that does not need end-play adjustment, such as a one-piece design, the thrust block may be omitted.
( ) = 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 4 DRIVER COUPLER (SIDE GEAR) THRUST WASHER
e) Disconnecting the brake lines and emergency brake cables (some axles); f) Pulling out one or both axles a few inches. LOCK-RIGHT Installations Covered in This Manual Removable third member axles. Typical of these are Toyota® 4-cylinder engine vehicles, both front and rear; similar appications in Nissan®, Isuzu®; certain domestic applications, etc.
Removal of the Differential Case from the Carrier other side with two marks (Figure 2). The caps are not interchangeable! Also mark each bearing adjuster directly under the lock hole with this same mark to note its side and rotational position. This mark is very important to correct re-assembly! 4. Remove the adjuster locks. (See Figure 3). Be sure that each adjuster is marked at the lock with the correct number of punch marks for each side.
Figure 2 Mark carrier, caps, adjusters at lock hole Figure 3 Remove adjusters lock and bearing caps 7
Disassembly of the Differential Case Inspection of the Parts 1. Remove the ring gear if it interferes with the removal of the pinion shaft. It may need to be tapped off with a brass mallet. Mark it so that it can be re-installed in the same rotational orientation as when removed. Note: If the pinion shaft can be slid out past the ring gear teeth, the ring gear does not need to be removed. 2. Remove the pinion shaft retaining pin with a long punch or by unscrewing it as appropriate. 3.
of about equal thickness, one under each side gear. 4. Inspect the thrust block (if used). Be sure that the ends are smooth and not galled. 5. Inspect the case for any chips, cracks or similar damage. also inspect the bearings. If the case or bearings look bad, replace them. However, if you do, remember that the marked bearing adjuster positions no longer will be correct; the ring and pinion backlash and bearings pre-load will to be reset with a dial indicator as described in the shop manual.
LOCK-RIGHT Installation Preparing the Parts for Assembly 1. Coat the teeth of the couplers and drivers, the large center holes of the drivers (Figure 4), and both sides of the thrust waashers with medium grease. Also place a little grease in each of the two window holes in each driver. The grease will help hold things in place and assist with functioning until the gear oil circulates. 2. Place a shear pin into each window hole. It should be about flush (Figure 5). 3.
Assembly of the LOCK-RIGHT Parts into the Differential Case Summary of steps in this section: a) Install Ring gear side coupler and washer b) Install other coupler and washer c) Install left driver and spacer assembly d) Install other driver 1. Install a coupler and washer assembly in the ring gear end of the differential case. See Figure 7. Note that the couplers in some models may have flats for clearance. 2.
5. Repeat this step for the other driver-and spacer assembly (Figure 8). Differential Case Completion Summary of steps in this section: a) Rotate drivers; align holes b) Push shear pin into other driver c) Install spring assembly d) Repeat for other pins and springs e) Push spacers outward f) Install pinion shaft and retaining pin. 1.
Figure 8 Install driver/spacer assemblies Figure 9 Push first pin into opposite driver 13
Figure 10 Install dual spring assembly Figure 11 Compress spring assembly and push into hole 14
3. Place one end of a spring assembly into the window hole, behind the pin (Figure 10). Compress it with a small screwdriver and pop the bottom into the window hold (Figure 11). Push on the bottom coils to be sure that the spring snaps in and is seated all the way (Figure 12). 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.
Be sure to orient it so that its retaining pin hole will line up with the hole in the differential case (Figure 13). 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.
Third Member Final Assembly cap down to meet the case. Be sure that the cap threads fit into those in the adjuster. Do not force anything. The cap should slide down very close to the carrier surface. Tighten the bolts until they are snug (see Figure 14). 6. Hold the other adjuster so that the mark is in the same relative position as the other one (with the mark away from the carrier) and slide it down the bearing race into the threads.
Figure 14 Re-install cap and adjuster at marked position Figure 15 Turn other adjuster to final position; install locks 18
The last portion of the turn should be difficult because pre-load is being applied to the bearings by spreading the caps apart as the adjuster is being turned in. 9. Insert an axle shaft or bar into one of the axle shaft holes in the differential case to help with holding the assembly or place it in a large vise, and torque the cap bolts to their correct value (see shop manual). 10. Install the adjuster locks and torque the bolts. Be sure that they are located in the marked holes (as shown in Figure 14).
Third Member Installation as 85-140, reduces the “clicking” noise somtimes heard during tight turns and provides adequate lubrication when the assembly becomes hot. Also see the section in the Vehicle Operator’s Manual regarding temperature. Your LOCK-RIGHT installation should now be complete. As a preliminary test, rotate the tires back and forth (transmission out of gear and driveshaft free). The drivers should randomly unlock and “click” as the tires move.
5. Rotate the first tire in the reverse direction and hold it; repeat step 3, rotating the other tire in the forward direction. 6. Repeat steps 2-4, rotating and holding the second tire to lock the second side. the circumference of all the tires, including the spare. Choose ones that are within about 3/8-inch or less of each other (do not change from side-to-side if they are radials). If one tire is much more worn than the other one, they both should be replaced for safety reasons.
4. Remove the driver and spacer opposite the ring gear flange first and then remove the second driver. 5. Remove the couplers. Subsequent Disassembly If something is not correct now or if you need to disassemble your LOCK-RIGHT in the future, we will briefly describe the procedure here. We will assume that the case has a thin ring gear and remains in the vehicle, or that it has a thick ring gear and has been removed from the vehicle and is on the bench. 1.
IMPORTANT If your differential case or thrust washers are excessively worn, your new LOCK-RIGHT 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 The following [WARNING] and [CAUTION] information is 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. Inspect the tightness of mounting bolts, misalignment of connecting shafts, lube leakage, excessive heating, or any unusual noise or vibration. Read ALL instructions prior to operating transmission and/or ring and pinion.
CAUTION! •Do not operate the transmission or ring and pinion without proper lube and correct amount.
NOTES: 26
NOTES: 27
AN AMERICAN LEGEND FOR OVER 50 YEARS 28