190303jb Flashcards
Housing joint leaks are generally contributed to faulty gaskets.
false;
As a maintenance concern, on which shafts should the end play be checked?
input shaft and c) output shaf
When performing a road test, it was discovered that there was a noise that only
occurred while cornering. The probable cause is:
worn carrier thrust washers
What check must be done before disassembling the carrier assembly?
backlash
Why must caution be used when removing the case half bolts?
If the carrier is equipped with a no-spin traction enhancing device, the case halves
will be spring-loaded and longer bolts will have to be used to relieve the spring
tension.
Which components should always be changed in sets?
bevel gear and pinion gear.
When the operator activates the driver controlled carrier lock, the operator is
mechanically locking:
one axle shaft to the carrier case
Pinion bearing preload is established with:
shims between the pinion bearings.
When checking pinion bearing preload using a cord and a spring scale, record the reading required to start the assembly rolling.
false;
The specific distance that the pinion and bevel gear are designed to run from each
other is called:
nominal distance.
Side bearing preload and backlash adjustment is done with:
threaded bearing adjusters.
When adjusting the backlash between the pinion and the bevel gear, if more backlash
is required:
adjust the flanged half adjuster counter-clockwise and the plain half adjuster
clockwise the same amount
. If the tooth contact pattern shows excessive heel:
move the ring gear toward the pinion.
When reusing a gear set, the shim pack thickness that was removed during disassembly can be discarded. T/F
False, the shim pack should be reused.
Where should a 0 etch marked pinion be positioned?
At the nominal dimension
After the backlash is properly set, the bearing cap fasteners can be torqued to specifications. What should be done after this?
Recheck the backlash; if correct, lock the adjusting rings in place.
2 basic ways of lubricating carrier components are:
Splash pressure and combination splash and pressure systems.
Which component splashes oil to the wheel bearings and drive pinion?
The bevel gear splashes oil around in the carrier housing troughs and passages for lubrication in hard to lube areas.
Pressure lubrication pump is driven at what speed?
This pump is driven in an over drive to ensure adequate lubrication for the bearings and gears.
What are some common housing joints failures?
O ring seals and RTV sealants that are used in the carrier housings due to loose bolts, stressing, high torsional loadings and imperfections in the mating surfaces.
Bevel gear and pinions must be replaced individually?
True or false
False
How is pinion bearing preload established ?
Shims
When measuring pinions bearing preload, how should you read the spring scale?
Read the spring scale torque while rolling rather than torque required to start rolling
