20
21
• Install roll pins. Figure 11-D
Installation Steps for 2 Pinion Ford 8” or 9” Rear Axles:
• Place springs into the alignment pins. Figure 12-D
• Carefully install the alignment pins and springs into the holes in the back of
the drivers. Make sure the springs do not fall out or become wedged side-
ways in the holes during installation. Figure 13-D
• Install the first side gear into the carrier case, without the thrust washer.
Figure 14-D
• Place first driver onto side gear. Figure 15-D
• Install center block with (2) extra small cross pins on opposite sides. Figure 16-D
• Take note of roll pin hole in case. Figure 17-D
• Install large cross pin lining up hole in pin with hole in case. Figure 18-D
• Place the second driver on top of the cross. The alignment pins in each driver
must fall into the slots of the opposing driver. Figure 19-D
• Install the second side gear on top of the driver, without the thrust washer.
Figure 20-D
• Place top carrier half onto carrier assembly. Figure 21-D
• Install roll pin. Figure 22-D
Final Installation Steps
• Thoroughly clean the housing.
• Place the carrier races on same sides they were removed from.
• Install the carrier into the housing.
• Replace bearing caps to their correct sides, torque down bolts to the proper
specification. Consult shop manual for the torque specification.
• Adjust backlash and tighten down side adjusters. Consult shop manual for
proper bearing preload specification.
• Finish assembly by reconnecting brake lines, backing plates, tires, etc
• Rotate one tire forcefully until it stops against the drivetrain. Have a second
person rotate the opposite tire in the opposite direction, It should unlock
and spin.
• Repeat engagement/disengagement testing for both directions on each side
of the vehicle.
• Your Spartan locker should make a clicking sound as the teeth move over
each other. If this sound is not present, or you cannot get the teeth to
disengage at all, check your work.
• Repeat engagement/disengagement testing as indicated above.
• Add gear oil.
**Note about tire diameters**
For safety and long life of your Spartan Locker, it is important that your tire diameters are as
close to identical as possible. Differing tire sizes can cause premature wear to your Spartan
Locker, shortening its life and causing possible damage to your differential. Measure each tire
to make sure that they match from the ground to the top of the wheel.
Figure 9-D
Figure 11-D
Figure 13-D
Figure 15-D
Figure 14-D
Figure 16-D
Figure 12-D
Figure 10-D
