Drain water tank to reduce truck weight.
Park truck on level, hard surface. Position gear selector to N (neutral) and apply parking brakes
Chock wheels of opposite axle.
Place 10 ton hydraulic jack beneath differential. Raise the jack until tires clear the ground.
Place maintenance trestles beneath axle, one on each side of differential. If truck is to be supported by
frame, and tires still need to clear the ground, raise the truck high enough to compensate for leaf spring
Carefully lower truck onto maintenance trestles. Be sure maintenance trestles are adjusted to the same
height and are of sufficient capacity to carry truck weight.
Repeat steps 4 thru 6 to raise other axle.
Lowering The Truck
Place 10 ton hydraulic jack beneath differential. Raise the jack until all weight is off maintenance
Remove maintenance trestles from beneath axle (one on each side of differential).
Carefully and slowly, lower jack until all weight is removed from jack. Immediately after truck is
grounded, chock the wheels.
Repeat step 1 thru 3 to lower other axle as necessary.
Ensure gear selector is positioned to N (neutral) and parking brakes are applied, then remove all wheel
Identify all parts of similar shape with tags. This will make proper reassembly easier Be sure to identify ends
of electric, hydraulic, and air lines as they are disconnected.
Some assemblies that are removed, even though defective, shall be treated as valuable items. They may be
rebuilt for future use.
Whenever possible, all gaskets, packings, and seals shall be discarded during removal or disassembly.
Similarly, lockwire, lockwashers, cotter pins, and like items shall be discarded during disassembly. All should
be replaced during assembly. When removing seals, gaskets, or packings, take care not to damage (e g.
scratch) the sealing surfaces. If surfaces are damaged they must be repolished to give a good sealing
To prevent moisture and dirt from entering housings, lines, and other openings, apply protective covers after
disassembly. Wrap all parts in clean paper or dip parts in rust preventive oil.