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Toyota V6 Installation Manual
Note about your carrier: Before beginning to tear down your differential,
please be aware that the Spartan Locker is designed to fit open carriers only. It
will not install into any other type of carrier.
Note about thrust washers: This Spartan Locker does not use the side gear
thrust washers. Attempting to install or operate the unit with thrust washers
present may damage the unit or your case. Figure 1-C
This Spartan Locker design comes with the following components:
• Two (2) Drivers
• Four (4) Alignment pins
• Four (4) Springs
• Two (2) Spacers
Preparing the vehicle for installation
Take the following steps to prepare your vehicle for installation:
• Block the vehicle’s tires, and place the transmission in neutral.
• Loosen the lug nuts and jack the vehicle up.
• Make sure that the vehicle is securely resting on jack stands.
• Remove the wheels; disconnect the brake lines and emergency brake cables,
if needed.
• Slide out both axles to provide enough clearance to remove the carrier.
• Remove the dropout from the axle housing.
Carrier removal and teardown
• Using a punch, mark one of the bearing caps so you can remember which side
it belongs to. Bearing caps are specific to each side of the housing. This is very
important for re-assembly.
• Check your backlash with a dial indicator and make note of it. You will need to
check it again later after re-assembly to make sure everything went back
together properly.
• Remove bearing caps, and pull out carrier.
• Make note of the bearing races as they will need to be reinstalled on the
same side they came off of.
• Loosen carrier case bolts and remove the top half of the carrier. Figure 2-C
• Remove cross pin shaft, spider gears and thrust washers.
• Clean carrier case and side gears thoroughly.
• Inspect carrier case and side gears for excessive wear. If the carrier or side
gears are damaged or worn excessively, your Spartan Locker may not work
properly or could be damaged.
Installation Steps:
• Place springs into the alignment pins. Figure 3-C
• 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 sideways in
the holes during installation. Figure 4-C
• Install the first side gear into the carrier case, without the thrust washer. Figure 5-C
• Place first driver onto side gear. Figure 6-C
• Place first spacer on top of the bottom side gear. Figure 7-C & 8-C
• Install cross. Figure 9-C
• 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 10-C
• Install the second spacer. Figure 11-C & 12-C
• Install the 2nd side gear on top of the driver, without the thrust washer. Figure 13-C
• Place top carrier half onto carrier assembly. Figure 14-C
• Install carrier case bolts and tighten down. Consult shop manual for
torque specifications.
Figure 1-C
Figure 2-C
