Wheels and tires/ bearings
fuel economy and loss of power
when a serviceable wheel bearing is removed or replaced what needs to be done to the wheel bearing?
packed with grease and/or checked for roughness/ vibrations
how many driveshafts does a 4WD vehicle have?
2
the transfer case splits torque from the transmission to the _____ and ______ axles.
front and rear
what happens when 4wd vehicles remain in 4wd mode while driving.
decreased fuel economy and/or increased driveline noise
A broken clutch cable may be caused by ____ engine or transmission mounts
worn
a manual transmission with hard shifting problems could be caused by:
improper lubricant/ a worn clutch/ misadjusted shift linkage/ All the answers are correct.
improper lubricant a worn clutch misadjusted shift linkage All the answers are correct.
CV joints are lubricated with ______.
!!!!! double jeopardy !!!!!
high-temperature, high-pressure grease
numerically lower gear ratio gives you?
better fuel economy
When a larger tire is used it has more ____ ___ and when a smaller tire is used it has less ___ ___.
Same answer for both
roll out or circumference
what can happen if you spin wheel bearings with compressed air blower?
it will damage them and/or they could hurt you
Locking hubs are generally found on ______.
older SUVs and pickup trucks with part-time 4WD
4WD locking hubs can be automatic or ___________.
manual
Which 4WD transfer case shift position should be used for climbing steep hills when driving off-road?
4 low
Gold-colored particles in the transmission fluid are an indication of worn ______.
blocking rings/ gear teeth/ roller bearings/ shifter forks
blocking rings or synchronizers
where are most/all transmission, differential, axle, identification numbers include the model, gear ratios, manufacturer, and assembly date located.
!!!!! double jeopardy !!!!!
on the transmission, differential, axle.
usually, a casting number or ID tag
Due to common failure the outer CV joint typically makes a ________ noise when turning.
clicking
a numerically high gear ratio gives you?
faster acceleration
incorrect tire inflation can cause?
Transfer case noise and/or damaged to drivetrain and axle related components.
What needs to be done to wheel bearings after they have been submerged in water, mud, and/or dirt for a long period of time?
they need to be serviced, lubricated, or replaced
mismatched tire sizes can cause ?
Transfer case noise and/or damaged to drivetrain and axle related components.
viscous clutch units can be found in what type of drive system and cannot be overhauled/rebuilt?
AWD and/or Full time 4WD
how many differentials do AWD vehicles have?
2
Using a lubricant that is thicker than service manual specifications can lead to ______.
gear jump-out/ hard shifting/ gear lockup/ gear slippage
!!!!! double jeopardy !!!!!
hard shifting
what is the proper tool to loosen a CV axle nut?
breaker bar if you are reusing the axle.
not an impact wrench if you are reusing.
CV axle nuts are either lock nuts, or they will need to be ______ into place to keep them from backing off.
staked
name 1 of 2 common methods to check for ring and pinion contact problems.
back lash or using contact grease to check gear contact pattern
narrow tires tend to cut through snow and water rather than ______________.
hydroplane
most input shafts on transmissions, differential, and axles have a cone shaped bearing also known as a ________ ______ ?
tapered roller bering
4WD and AWD systems allow the use of tires _____________ than those used on 2WD vehicles.
narrower/skinner
Interaxle differentials are only found in ____ _______ and are NOT mounted in the front or rear differential.
AWD systems
part-time ___ vehicles have a transfer case.
!!!!! double jeopardy !!!!!
4WD
A poorly adjusted shift linkage can cause_________.
gear clash/ hard shifting/ jumping out of gear/ All the answers are correct.
all
An excessively low lubricant level will most likely cause ______.
gear clash/ hard shifting/ gear lockup/ gear jump-out
gear lock up
If a drive axle shows signs of rubbing against the chassis, the vehicle should be checked for ______.
weak or broken springs/ worn or broken engine or transmission mounts/ chassis misalignment/ All the answers are correct.
All the answers are correct.
clunking noise could be produced by excessive ________ in the differential gears and transmission.
noise could be produced by excessive backlash in the differential gears and transmission.
C-shaped washers (C-locks) are used to retain the axle shaft used with _____ bearings.
sealed ball/ tapered roller/ straight roller/ All the answers are correct.
straight roller
What type of bearings should not be washed in solvent?
caged needle bearings/ tapered roller bearings/ loose roller bearings/ sealed ball bearings
sealed ball bearings
Automatic locking hubs are unlocked when the vehicle is driven slowly in __________ 2WD mode.
reverse
automatic locking hubs can be electric operated and/or ______ operated.
!!!!! double jeopardy !!!!!
vacuum
Which of the following components is NOT part of a viscous clutch assembly?
sealed drum/ hydraulic piston/ externally splined steel plates/ internally splined steel plates
hydraulic piston
On some cars, the ______ and transmission must be removed as a unit
On some cars, the engine and transmission must be removed as a unit
________ ________ joints are used to transfer uniform torque at a constant speed, while operating through a wide range of angles.
Constant velocity CV
clunking noises could be excessive play in an inner or outer __ _____.
CV joint
the ___________ pinion gears and side gears are in constant mesh.
differential
a frequent cause of _____ _______ failure is the use of oversized tires mounted on wheels with substantial offset.
wheel bearing
When installing a ball bearing that is a press fit (tight) onto the main shaft, pressure should be applied to the _____ race.
inner/ outer/ both/ neither
inner
The wheel bearing locknuts on most 4WD vehicles require the use of a four- or six-pronged _______ ______.
!!!!! double jeopardy !!!!!
special socket
In an automatic AWD vehicle, normally one axle receives all the torque; when slippage occurs, 50 percent of the torque can be sent to the other axle by mechanical, hydraulic, or _________ means.
electrical
what vehicle manufacturer has produced the most AWD vehicles commonly sold in the US and Australia?
Suburau
A vehicle with a leaking extension housing seal is being diagnosed. check for nicks and burrs on the driveshaft yoke. a worn extension housing _______ could have caused the seal to fail.
bushing
How are rubber mounts and bushings checked on axles, suspension, transmissions, and engines checked?
look for excessive play or movement my moving the busing or mount around
CV axle shafts are commonly found on ___ vehicles, the front of 4wd vehicles, and the rear of 4wd vehicles, and independent suspension vehicles.
FWD
the inside bore of the side gears is ______ and mates with splines on the ends of the axles
splined
What part(s) will need to be changed to compensate for larger or smaller tire sizes in order to gain optimal performance from the engine and transmisson.
ring and pinion gear ratios
what material should your hammer or punch be made from if you are installing bearings or gears to keep from damaging them?
!!!!! double jeopardy !!!!!
brass
what does it mean when the 4WD light is flashing?
a fault code is stored
what type of system does not have a low range setting?
AWD
_______ ____ differential clutch packs are designed to slip slightly when the vehicle is turning.
limited slip
Driveshafts are made of ______.
seamless steel tubing/ reinforced fiberglass/ aluminum/ All the answers are correct.
all
name 1 of 2 ways a drive shaft or axles are mated to the transmission or differential.
splined or flanged
CV joints provide ______.
uniform torque transfer/ constant speed/ operation through a wide range of angles/ All the answers are correct
All the answers are correct
A collapsible pinion spacer (aka crush sleeve) is used to set the ______.
pinion depth/ pinion bearing preload/ housing (carrier) bearing preload/ backlash
!!!!! double jeopardy !!!!!
pinion bearing preload
any vehicle will gain more acceleration by using a _____ diameter wheel and tire.
!!!!! double jeopardy !!!!!
smaller/shorter
A humming or growling noise in the front of the vehicle that changes with road speed could be caused by ______.
inadequate lubrication of the inner CV joint/ worn or damaged wheel bearings/ a bad intermediate shaft bearing (equal length axle shaft system)/ All the answers are correct.
all
What does AWD stand for?
All wheel drive
How many transmissions do AWD vehicles have?
1
pressure is kept on the limited slip _____ _____ by either an S-shaped spring or coil springs.
clutch packs
What is the 3rd pedal to the left on all manual transmission vehicle used for.
the clutch
Full floating axle shafts are found on the rear axle of a _____ ____ truck
heavy duty
A shudder or vibration that occurs only when accelerating is most likely caused by ______.
loose/worn universal joints, out of balancer/ bent driveshaft/ excessive play in the inboard plunge joint
Pinion gear depth is adjusted by ______.
threaded adjusters behind the housing bearing outer cups/ shims placed between the differential housing (carrier) and housing bearings/ threaded adjusters between the companion flange and front pinion bearing/ shims placed between the pinion bearing and pinion gear
shims placed between the pinion bearing and pinion gear