STEERING SERVICE Flashcards
what is the maximum internal flow rate loss when load testing
1 gal per min
when would the poppets need to be reset during a test
if the pressure does not drop at a full turn position or if the pressure drops more than 1/8’’ before steering stop
how can you check for a worn ball stud
grab the drag link and push and pull with approximately 100 pounds of force
what is the procedure to reset a clock spring if the tape comes off or was not taped before removal
1 turn the cover counter clockwise until it locks
2 turn the cover clockwise 4.5 times
3 Align the arrows on the top cover and the bottom housing
4 tape the assembly and install clock spring
what should be avoided during the initial filling phase of the power steering
turning the wheels . this could cause air to enter the system
what is one visual inspection that can be done on the power steering portion of the truck
the power steering level and oil condition
when operators use the steering wheel as an aid to get into the cab what is one thing you should make sure to check
loose mounting fasteners and broken pivot pins
why must you tape the clock spring together when removing
to keep both sides together and maintain there position
what are poppets
pressure-unloading valves that will relive assist pressure just before a full turn is made in each direction
when installing the steering wheel after removing the clock spring what could cause damage to the clock spring if not done during assembly
make sure the clip on the clock spring lines up with the slot on the steering wheel
when removing tie rod ends what should you do to make sure the toe isn’t chaged during reassembly
mark the location of each old tie rod end and count the number or rotations required to remove it . then install the new tie rod with the same number of revolutions
if the ball sockets are worn on the drag link what must you do
replace the drag link as an assembly or replace the draglink ends if possible
when testing the poppet what should the pressure be with 20 lbs of force on the wheel at full turn position
200 to 400 less than pump relief pressure
when removing the clock spring assembly what must you make sure of first
the wheels are straight ahead
when measuring king pins for wear what is the maximum allowable wear for the bushings
0.32mm or 0.015”
how can you eliminate the possibility of future accidents involving the installation of damaged steering components
by destroying removed damaged components
what are the two main hydraulic tests to be preformed on a power steering system
steering pump pressure and steering pump flow rate
why must you disconnect the battery ground cable when removing the steering column
to prevent accidental arcing or discharge SRS
how should the axle stops be set so the poppets operate properly
so that there are at lest 1 3/4 steering wheel turs from a straight ahead position to a full left or right turn
when road testing a truck for power steering problems what two main things are you looking for
steering response and vehicle handling characteristics
before removing any parts in a steering system what is the first step in troubleshooting
talk to the operator . then visual inspection
when measuring the steering knuckle for vertical wear what is the maximum amount of wear allowable before the shims and bearings should be inspected
0.30mm or 0.012”
when load testing the power steering system with a flow meter how long should you leave the valve closed for
no longer than 5 seconds
when installing new bushings into kingpin bores what must yo make sure of
that the seam of the bushing is 90 degrees to the spindle
can you fix a bent pitman arm
no
after replacing tie rod ends what must be checked
wheel alignment
what is used to retain the kingpin in the axle and steering knuckle
draw keys
if the retaining fastener on the pitman arm becomes loose during operation what effect might this have
the splines on the pitman arm and the sector shaft may become damaged
before a road test you should always make sure the
vehicle is safe to go on a road test
before adjusting the poppets what must first be adjusted
the steering stops
what would a squealing noise indicate during corners on a road test
tire skid is excessive
after installing a new steering knuckle assembly how should you adjust the steering stops
on an alignment rack and the front tires positioned on radius plates
what is important to pay attention to when installing the pitman arm onto the sector shaft
match up the timing marks on the pitman arm and sector shaft
when trouble shooting steering problems where is the first place you should look
tires
why is it important to wait two minuets after disconnecting batteries before removing the airbag
to allow internal components to completely discharge . or the airbag might deploy
what precaution should be taken after the air bag has been installed and the batteries have been connected
positions yourself outside the cab and away from the front airbag when you turn on the key
when cleaning the steering gear and reservoir what precautions should be taken
use lint free rags and avoid solvents getting into the steering gear
wheels should not be held more than how long against stops to prevent steering stop damage
no more than five seconds
if the wheel bearing has become contaminated and spun on the spindle what must be done
you must replace the spindle
when measuring the cross tube assembly for looseness what is the maximum allowable wear
1.5mm or 0.060’’
when removing a steering wheel what are a few things to consider
.make an alignment mark on the steering wheel and steering column before removal
. do not damage the horn wires during removal and make sure they are properly routed during assembly
what are a couple problems that can seem like or act like steering problems
low tire pressure or a dragging brake also rear axle alignment problems
when must you adjust automatic adjusting poppets
. changing to a larger tire
. reducing wheel cut for any reason
. damaged steering stop bolts that have been replaced
. steering gear stop bolts that have been replaced
at what temperature will oil start to break down
120C or 205F
when inspecting the power steering oil and you find the oil is burnt or contaminated you must
flush the system
when removing SRS air bag what are a few precautions to be taken
apply park brake and wheel chocks
. disconnect the batteries and wait two minutes
. loosen retaining screws
. carefully lift the air bag and remove wires
when installing grease seals what direction must the lip be facing
toward the center of the knuckle
when the pitman arm has been removed from the sector shaft what will happen if the steering gear is turned more than 1 1/2 times
it will affect the initial poppet valve setting and it will have to be reset
what is one check to make before removing a steering wheel
check to see if it has a SRS system
when should you replace a pressure relief valve during a load test
if the pressure rises above the intended spec or the pressure is erratic during the test
if the fastener that holds the pitman arm to the drag link becomes loose and the mounting hole becomes damaged what should you do
replace the pitman arm and draglink
what are the two types of steering gear mounting configurations
standard and inverted
is the clock spring serviceable
no
when will manually adjusted poppets have to be adjusted
. replacing the steering gear with new or rebuilt
. changing the wheel cut for any reason
. replacing damaged steering stop bolts
. changing a damaged component that required the removal and installation of the steering stop
when replacing a draglink end into the drag link tube what must you make sure of
that the threaded end is completely inserted into the drag link tube
if the kingpin is seized can heat be used to remove the kingpin
no follow manufacture spec
if a steering wheel has a master spline
it can only be installed in one position
when replacing the king pin thrust bearing it should be placed where
between the underside of the axle and the bottom steering knuckle yolk
when backing out a manual adjusting screw you should never go farther than
1” - 1 1/16 “ or you risk striping the threads
when checking universal joints you must make sure that they are
in phase with each other
what is important to remember when removing a steering column with a tilt or collapsible steering column
they are under spring tension and should be in the upright position to lessen spring tension
