Rv Ip Exam Cram

Front 1

The most common cause of brake magnet uneven surface wear is from?

Back 1

Worn Magnet Lever arm bushings

PG 13-14

Front 2

What is needed to adjust the brakes on a drop axle

Back 2

There is a special tool is required to adjust the brakes

Front 3

When referring to trailer brakes, modulation means?

Back 3

Increase in voltage as the brakes are applied

Front 4

The boiling point of water compared to brake fluid is

Back 4

Lower than brake Fluid

Front 5

Brake shoes should be replaced

Back 5

when worn within 1/32" of the rivets

Front 6

hydraulic trailer brakes work by

Back 6

pressurizing the brake fluid at the slave cylinder

Front 7

Surge brakes involve which type of energy transformation

Back 7

mechanical to hydraulic

Front 8

Where is the reservoir located for surge brakes

Back 8

the hydraulic reservoir is located on the trailer

Front 9

A customer complains that his trailer is within weight, but pulling to one side upon braking

The technician should..

Back 9

Adjust the brake shoes

Front 10

The total current draw from the brakes on a tri-axle is approximately

Back 10

20 Amps (Approx 3 Amps per brake magnet)

Front 11

What is the ball size required for a class V hitch

Back 11

Ball Size Varies with Application

Front 12

The recommended clearance between a pickup bed and fifth wheel pin box

Back 12

5 1/2" between pickup bed and fifth-wheel pin box

Front 13

Which of these is not part of air suspension system?

a. Solenoid Valve

b. Pressure Switch

c. Height Conrol Valve

d. Air accumulator tank

Back 13

Solenoid Valve

Front 14

The primary weakness of air suspension system is:

Back 14

They Require periodic inflation from an external source

Front 15

The height control valve has direct control over?

Back 15

The Air Compressor

Front 16

What is the main advantage of rubber motorhome suspension system

Back 16

Improves Ride characteristics

Front 17

Why is it important not to use petroleum lubricants on spring-eye bushings

Back 17

Causes the Bushings to expand

Front 18

Main cause of tire cupping is

Back 18

Tire that are not balanced (Out of Balance)

Front 19

Rubber trailer springs operate on the principle of

Back 19

Shear-type strength pg 13-44

Front 20

Rubber motor home suspension systems replace which component on a standard spring suspension

Back 20

Replaces the Spring Shackle Pg 13-44

Front 21

If a single leaf in a leaf spring breaks..

Back 21

the spring assembly must be taken to a shop for a proper leaf sizing and repair PG 13-46

Front 22

Suspension systems should be visually inspected every...

Back 22

6000 MILES PG 13-45

Front 23

Rubber Torsion Axles require periodic inspection of

Back 23

Fasteners Pg 13-44

Front 24

What is a fundamental problem with a rubber torsion axel

Back 24

They can sag over time, requiring replacement

PG 13-45

Front 25

The Torsion Arm

Back 25

Is attached to the Spindle (it is placed in the axle tube)

Front 26

Rubber torsion axles

Back 26

Are Completely self contained

Front 27

Tongue Jacks

Back 27

Can be used to level a trailer

Front 28

Stabilizer jacks

Back 28

Can be found on any RV Type PG 13-97

Front 29

Following wheel replacement, wheel nuts should be be tightened

Back 29

initially, then after 50 miles

Front 30

Optimal tire inflation pressure

Back 30

Can be determined by weighing the vehicle

Front 31

Tire side-wear is generally caused by

Back 31

Over Loading

Front 32

Tires out of balance generally causes

Back 32

Generally Causes Cupping

Front 33

Many motorhomes suffer from poor handling because

Back 33

because of the size of unit combined with steering geometry.

Front 34

Motorhomes have not benefited from the same stability advancements as automobiles because

Back 34

Unfavorable Load-to-tire width ratio.

Front 35

What are the two types of materials holding tanks are made of?

Back 35

ABS & Polyethylene

Front 36

A main requirement for a hydraulic line heat shield must be ____ thick

Back 36

nominally 0.035" Sheet

Front 37

During Storage hydraulic components should be activated and cycled?

Back 37

Monthly

Front 38

Which step is generally not performed when verifying an internal leak of a dual acting cylinder

Back 38

Loosen retract hose

Front 39

What controls fluid flow inside a solenoid valve?

Back 39

Spool

Front 40

A directional control valve is also known as?

Back 40

Selector Valve

Front 41

What is a possible outcome of an internal leak in a hydraulic jack

Back 41

Jack extends while driving

Front 42

Most common method for assembling high pressure hydraulic hoses and fittings?

Back 42

Swaging

Front 43

Besides filling the reservoir, the first thing that should be done before bleeding the hydraulic system is?

Back 43

Retract all cylinders

Front 44

Which PPE is not required when working on hydraulic equipment?

Back 44

Hearing Protection

Front 45

Improper DC Voltage can cause

Back 45

Slow Cylinder Movement

Front 46

What is not a function of a spool valve

Back 46

Auto-Bleed of hydraulic system

Front 47

What makes a power pack different from most hydraulic systems?

Back 47

The cylinders are plumbed in series

Front 48

During periods of RV Storage, it is recommended to?

Back 48

Remove the hydraulic reservoir cap? Pardon..?

Front 49

What is a tell-tale sign that the hydraulic fluid is low

Back 49

Pump increases in pitch

Front 50

Cleaning Brake Pads is bad for you because it is made with?

Back 50

Asbestos

Front 51

Armature surfaces can be milled but no more than

Back 51

0.03"

Front 52

Wheel bearing grease should be replaced every?

Back 52

12,000 Miles or 12 Months

Front 53

A Pulse Preventer is a?

Back 53

Diode

Front 54

A electromagnet of a 7-12" brake assembly has a resistance of?

Back 54

3-4 Ohms

Front 55

Checking electromagnet for proper wear will involve the use of a?

Back 55

Straight Edge

Front 56

Breakaway Switch must be mounted with a?

Back 56

Swivel Configuration

Front 57

Height control valve of a rear axle air suspension system?

Back 57

Monitors frame to axle distance

Front 58

Rubber torsion are to be periodically _______ for safety?

Back 58

Inspected

Front 59

First Step when working on a broken suspension?

Back 59

Relieve the load on the suspension system.

Front 60

Trunnion Bars are component of a?

Back 60

Weight-Distribution Hitch

Front 61

What class of weight carrying hitch is rated up to 15,000 LBS

Back 61

Class V

Front 62

Trailer running lights are mandated by?

Back 62

Federal Regulations (FMVSS 108)

Front 63

The weight rating of a tow vehicle is located?

Back 63

Driver side door jam

Front 64

On a tire that says LT235/85R16, the numbers 85 indicate the?

Back 64

Height to width ratio

Front 65

The Average life expectancy for a tire is?

Back 65

5-7 Years

Front 66

A force of 90 Pounds to the end of a foot long wrench is?

Back 66

90 foot pounds of torque

Front 67

Tire air pressure should be checked when the tire is?

Back 67

COLD

Front 68

Brake fluid should be changed

Back 68

Every 2-3 Years

Front 69

Brake Fluid should be checked at least once every__ Months

Back 69

6 Months

Front 70

Hydraulic electric brakes have not been manufactured since?

Back 70

1998

Front 71

Manual brakes should be adjusted?

Back 71

After the first 200 Miles of operation, @ 3,000 mile intervals, and as performance requires.

Front 72

Stabilizer jacks are placed in contact with the ground and tightened to?

Back 72

Keep the RV from rocking.

Front 73

Troubleshooting manual landing gear landing gear jacks does not involve

Back 73

Load Testing

Front 74

Cavitation in a hydraulic pump is likely an indication of

Back 74

Low hydraulic fluid level

Front 75

Device that converts hydraulic power to mechanical power is called?

Back 75

The Actuator

Front 76

Hydraulic Power is regulated by?

Back 76

The Valves

Front 77

_______ are used to contain excess fluid from system volume changes

Back 77

Reservoirs

Front 78

_________ Are used to replace hydraulic fluid through system leakage.

Back 78

Reservoirs

Front 79

_______ Are used to help separate dirt and air from hydraulic fluid

Back 79

Reservoirs

Front 80

Hydraulic hoses are generally designed and built to ____ Standards.

Back 80

SAE

Front 81

Typical type of pump in RV Applications is a ____ Pump

Back 81

Gear Pump

Front 82

In a dual-acting hydraulic system, the hydraulic line going from the control valve back to the reservoir is called a _____________

Back 82

Return Line

Front 83

In a dual-acting hydraulic system, the hydraulic line going from the pump to the control valve is called a _________

Back 83

Pressure Line

Front 84

Hydraulic hoses must be _________ away from heat sources, unless protected by adequate heat shield.

Back 84

18 Inches

Front 85

Hydraulic Systems should be activated _______ during storage.

Back 85

Monthly

Front 86

The check hydraulic fluid level in the reservoir you must first ensure the actuators are in the ________ position

Back 86

Retracted.

Front 87

One actuator/cylinder will not extend or retract. which of the following would not normally be a cause of this condition.

Back 87

Thermal Expansion.

Front 88

One Actuator will not remain extended. which of the following could cause this condition?

Back 88

Internal Leakage.

Front 89

An actuator/cylinder creeps out. which of the following could cause this condition??

Back 89

Thermal Expansion.

Front 90

A diode should have continuity in?

Back 90

One Direction

Front 91

If a customer complains of receiving shocks from his/her vehicle when plugged in, the first test should be?

Back 91

a polarity check on the shore cord.

Front 92

You find a wire not connected, to find the proper wire location you?

Back 92

Check printed circuit schematic.

Front 93

The type of power produced by the oldest type of RV Converter is?

Back 93

12 Volts unfiltered DC

Front 94

When splicing a 120 VAC wire, you must?

Back 94

Use a junction box.

Front 95

Upon completion of a regulator adjustment you should always follow-up with a?

Back 95

Lock up test