Lesson 2/Learning Event 3
Check the spring guide bracket, torque rods, and torque rod brackets for
condition and secure mounting. Check the differential for leaking seals or
Check for plugged or leaking housing vents.
Check for loose or damaged companion flanges (where the propeller shaft is
attached to the differential).
Check the lube level in the differentials.
Check for broken axle shafts. First, block all wheels not being checked, and
then jack up the wheel that is driven by the shaft being checked. Put the
transmission and transfer case in gear. Try to turn the wheel. If the wheel
turns without turning the propeller shaft, the axle is broken or the differential
Check all areas of the axle assemblies for leaking brake fluid or lubricant.
Check wheel bearing adjustment. If the wheel bearings are adjusted properly,
only a slight amount of movement between the brake drum and the backing
plate will be found. (The wheel must be jacked up for this check.)
Check the entire axle assembly for excess dirt or damage that may be seen.
Road-test the vehicle. Listen for excessive or unusual noises in both the front
and rear axle assemblies.
Front Axle Inspection - M35A2
To inspect the front axle assembly of a 2 1/2-ton truck M35A2, make all of the checks
that you made on the rear axle, plus checks for the steering system. Check for bent or
damaged steering components. Examine the tires for excessive wear due to misalignment
of axle steering components.
Before you make a toe-in check and adjustment, the wheel bearings must be properly
adjusted and the tires must be inflated to correct pressure. The vehicle must be on a
smooth, level surface, with the wheels in the straight-ahead position.