Under Car Under Car Inspection and Inspection and

ServiceServiceChapter 14Chapter 14

Page 169Page 169

Under Car InspectionUnder Car Inspection

Tire InspectionTire Inspection

Tire Wear IndicatorsTire Wear Indicators

When the tread wears to this point, the tire needs replacing

Measuring Tire PressureMeasuring Tire Pressure

Brake System ChecksBrake System Checks

Disc Brakes Disk Pad Thickness Comparison

Drum Brakes Drum Brake Lining Thickness Comparison

Disk Brake CheckDisk Brake Check

Items to Check (disk)Items to Check (disk)

Check Lines forChecks, Chaffs,and Bulging

Check the caliper and mount for tightness

Check the condition of the lug studs---- and axle nut for tightness

Check the rotorFor warpage, cracks,and roughness

Drum Brake CheckDrum Brake Check

Items to Check (drum)Items to Check (drum)

Check LiningThickness

All springs for “spring”

Check anchoring clips

Check WheelCylinder forLeakage

After checking the brake pads, replace After checking the brake pads, replace the road wheel but don't put lug nuts the road wheel but don't put lug nuts into the socket of the impact wrench into the socket of the impact wrench and power the lug nuts on; this and power the lug nuts on; this practice can lead to the wheel nuts or practice can lead to the wheel nuts or studs going on cross-threaded. studs going on cross-threaded.

When inspecting the caliper be very When inspecting the caliper be very careful because the caliper may be hot careful because the caliper may be hot if the car has been driven recently. if the car has been driven recently.

Warning

Lubricating ChassisLubricating Chassis

Grease Gun and FittingsGrease Gun and Fittings

Sometimes called “Zerk” fittingsGuns will have flexible hoses too

“Grease Points”

Suspension ChecksSuspension Checks

See Anything Wrong See Anything Wrong Here?Here?

Broken Shackle

*Sometime things blend in and are tough to spot!

Steering SystemSteering System

Steering Parts to CheckSteering Parts to Check

Ball Joint

Pitman Arm

Center Link

Tie Rod End

Idler Arm

Check All Items-Customers Check All Items-Customers Can’t Get Under Their Vehicles Can’t Get Under Their Vehicles

in Most Casesin Most Cases

Checking oil levels

Make sure you are thorough

There are many things to check-Don’t forget to record things that need attention

Check CV Boots

Hanger

Exhaust Driveline and Exhaust Driveline and Shock/StrutsShock/Struts

Broken CV Joint(constant velocity)

Shocks and Struts

Check U-Joints

Checking DriveshaftChecking Driveshaft

Items to check:Items to check: Ensure all rubber bellows or boots that are fitted Ensure all rubber bellows or boots that are fitted

to steering components are in good condition so to steering components are in good condition so that they do not allow contaminants to enter. that they do not allow contaminants to enter.

Have an assistant help you when you are moving Have an assistant help you when you are moving the steering system and checking for wear. the steering system and checking for wear.

This is a systematic visual inspection of all major This is a systematic visual inspection of all major vehicle systems. Be prepared to note down any vehicle systems. Be prepared to note down any faults to discuss later with your supervisor.faults to discuss later with your supervisor.

*Consider using head protection.*Consider using head protection.

Items Cont.Items Cont. The steering area inspection includes tie-The steering area inspection includes tie-

rods, tire and wheel assembly, suspension rods, tire and wheel assembly, suspension bushes, shock absorbers and brake hoses. bushes, shock absorbers and brake hoses.

In the transmission area, you'll be looking In the transmission area, you'll be looking for fluid leaks, tightening mounting bolts, for fluid leaks, tightening mounting bolts, and inspecting the clutch mechanism or and inspecting the clutch mechanism or shift linkage.shift linkage.

Clamps and bolts may need tightening on Clamps and bolts may need tightening on the exhaust system and manifold pipe. the exhaust system and manifold pipe. You'll also be looking for signs of exhaust You'll also be looking for signs of exhaust leaks, corrosion or deterioration.leaks, corrosion or deterioration.

Items Cont.Items Cont. You'll be checking for any excess You'll be checking for any excess

movement in driveline shafts. movement in driveline shafts. Look for leaks around the differential Look for leaks around the differential

and check the rear shock absorbers or and check the rear shock absorbers or leaf springs. leaf springs.

The fuel tank must be secure and fuel The fuel tank must be secure and fuel lines inspected for damage or abrasion.lines inspected for damage or abrasion.

Fuel Filter ChangeFuel Filter Change

•Compare old with the new •Very Flammable be careful•Release fuel pressure

•Keys out of ignition•Pull fuel pump fuse

•Catch any gas that drips•Directional important

Fuel Filter ChangeFuel Filter Change

Adjusting Parking Brake Adjusting Parking Brake CableCable

Adjusting Parking Brake Adjusting Parking Brake LeverLever

Adjusting Parking BrakeAdjusting Parking Brake

Your Job.Your Job.

Complete chapter Questions 1-10 Complete chapter Questions 1-10 (review) and 1-10 (ASE-style). Page 179(review) and 1-10 (ASE-style). Page 179

Write on a separate paper and write Write on a separate paper and write out the complete question and your out the complete question and your answer. ( do not write the other answer answer. ( do not write the other answer options). options).

Complete the chapter worksheet (I will Complete the chapter worksheet (I will give it out). You may write on it. give it out). You may write on it.

File all items in your note book.File all items in your note book. Notebooks will be graded in the future.Notebooks will be graded in the future.