Question 1

__________ should always be used on threaded pipes, plugs, or bolts.

Accepted Answer

Thread sealer should always be used on threaded pipes, plugs, or bolts to prevent leaks and ensure a tight seal.

Question 2

Seals for a manual transmission are being discussed. Technician A says that many seals consist of a stamped metal case with a flexible sealing lip and an internal spring. Technician B says that a seal referred to as a Scotseal does not have a single sealing lip, but rather multiple sealing lips on the outside of the seal. Who is correct?

Accepted Answer

The answer of Seals for a manual transmission are being...

Question 3

__________ is a type of sealant used on threads that may not be perfectly shaped.

Accepted Answer

Teflon tape or paste is used on threads to help seal and prevent leaks, especially when the threads may not be perfectly shaped.

Question 4

When rebuilding a manual transmission, it's always a good practice to replace the:

Accepted Answer

The answer of When rebuilding a manual transmission, it's always...

Question 5

What is the first step in replacing a seal or gasket?

Accepted Answer

The first step in replacing a seal or gasket is to clean off the old gasket from the sealing surfaces to ensure a proper fit and seal for the new gasket.

Question 6

Technician A says that abrasive discs cannot cause any damage to the engine or components. Technician B says that when using abrasive discs, some of the material may damage engine components, such as bearings, and should never be used. Who is correct?

Accepted Answer

The answer of Technician A says that abrasive discs cannot...

Question 7

Which of the following is NOT a proper way to remove old gaskets and sealants from soft metals such as aluminum?

Accepted Answer

Using a metal scraper on soft metals like aluminum can cause scratches and damage to the surface, making it an improper tool for removing old gaskets and sealants.

Question 8

Technician A says that an abrasive disc can safely be used on any surface when removing an old gasket. Technician B says that plastic scrapers can be safely used on all types of metals without any surface damage. Who is correct?

Accepted Answer

The answer of Technician A says that an abrasive disc...

Question 9

Technician A says that chemical gasket removers must be used in conjunction with another mechanical gasket removal tool. Technician B says that abrasive discs can cause some engine bearing damage and should not be used. Who is correct?

Accepted Answer

Chemical gasket removers are often used alongside mechanical tools for effective removal, and abrasive discs can indeed cause damage to engine bearings if not used carefully.

Question 10

Technician A says that a gasket can only seal imperfections that fall in the gasket's parameters. Technician B says that gaskets are used to seal surfaces with excessive warpage. Who is correct?

Accepted Answer

Gaskets are designed to seal imperfections within their specified parameters, but they are not meant to seal surfaces with excessive warpage.

Question 11

Technician A says that a stamped steel surface should always be checked for warpage. Technician B says that all bolts should be completely started by hand before anything is torqued. Who is correct?

Accepted Answer

Checking for warpage on a stamped steel surface is important to ensure proper fit and function, and starting bolts by hand helps prevent cross-threading and ensures proper alignment before torquing.

Question 12

Technician A says that too much RTV sealant is never a concern, and a generous amount should always be applied. Technician B says that the RTV instructions for waiting time should always be followed before returning the part back into service. Who is correct?

Accepted Answer

Technician B is correct because following the RTV instructions, including waiting time, is crucial for proper sealing. Too much RTV can cause issues like clogging or improper sealing, so Technician A is incorrect.

Question 13

If a vehicle uses serviceable bearings, the maximum allowable play is approximately ________.

Accepted Answer

The maximum allowable play for serviceable bearings is typically around 0.010 inches to ensure proper function and safety.

Question 14

Technician A says that a replaceable sealed wheel bearing replacement normally requires the removal of the steering knuckle and use of a hydraulic press. Technician B says that a special tool will allow a replaceable bearing to be replaced on the vehicle without removal of the steering knuckle. Who is correct?

Accepted Answer

Both technicians are correct. Technician A is correct that traditionally, replacing a sealed wheel bearing often involves removing the steering knuckle and using a hydraulic press. Technician B is also correct that there are special tools available that allow the bearing to be replaced on the vehicle without removing the steering knuckle.

Question 15

Which type of sealed wheel bearing requires the use of a hydraulic press or special tool to remove and install it on the vehicle?

Accepted Answer

The answer of Which type of sealed wheel bearing requires...

Question 16

Technician A says that a replaceable wheel bearing can be serviced on the vehicle with a special tool that does not require steering knuckle removal. Technician B says that a replaceable wheel bearing replacement requires the steering knuckle to be removed and a hydraulic press be used. Who is correct?

Accepted Answer

The answer of Technician A says that a replaceable wheel...

Question 17

Technician A says that when pressing a wheel bearing into the steering knuckle, be sure to press on the outer bearing, otherwise the bearing will be damaged. Technician B says that when pressing the axle flange in, the inner bearing must be supported, otherwise the bearing will be damaged. Who is correct?

Accepted Answer

Both technicians are correct. Technician A is correct because pressing on the outer bearing prevents damage to the bearing by ensuring the force is applied correctly. Technician B is correct because supporting the inner bearing when pressing the axle flange prevents damage by maintaining proper alignment and support.

Quiz 4: Fasteners and Thread Repair