MLR 2
Vehicles never utilize both manual and automatic type belt tensioners on one engine. T/F?
False
What part of a multi-groove belt develops wear with normal use?
The "valleys" between the ribs.
Modern serpentine drivebelts never feature _______ as found on cam (timing) belts.
Cogs/Teeth
The amount of antifreeze in the coolant is measured with a _____.
both "hydrometer" and "refractometer"
A hydrometer can be used to check ______
both "battery electrolyte" and "coolant"
Which battery rating is expressed in minutes?
Reserve capacity
A fully charged 12‑volt battery should indicate ________
12.6 volts or higher
For every 1 pound of pressure put on engine coolant, the boiling point of the coolant is raised about _____ degrees Fahreheit degrees (_____ degrees Celsius).
3.25, 1.8
Multi-groove drivebelts commonly have as few as ____ and as many as ____ grooves.
4, 6
The minimum concentration of antifreeze is _____
44% antifreeze, 56% water
___________ and __________ are commonly driven separately from other components on accessory drive systems.
A/C Compressors and Power Steering Pumps
Technician A says cooling system pressure is regulated by the pressure relief valve in the water pump. Technician B says cooling system pressure is regulated by the radiator cap. Who is correct?
B only
Technician A checks brake fluid with an electronic conductance tester. Technician B checks brake fluid for copper content with a dip strip. Who is correct?
Both
When performing a DC load test on a battery, which rating is normally used to determine how much load to apply to the battery?
CCA
During engine warm-up, when the thermostat is closed, _____
Coolant flows through the bypass passage
The type of brake fluid most often recommended by vehicle manufacturers is _______.
DOT 3
Coolant is water and
Ethylene glycol
Types of belt tensioners
Hydraulic Spring loaded Bolt-adjustment
Brake pad lining thickness is commonly measured in __________.
MM and x/32"
Technician A checks transmission fluid condition with the engine off. Technician B says some automatic transmissions do not feature a dipstick. Which technician is correct?
Technician B
A battery date code sticker indicates D6. What does this mean?
The date it was shipped from the factory was April, 2006 (or 2016).
As the percentage of antifreeze in the coolant increases, _________________
The freeze point decreases (up to a point)
A belt that does not have proper tension may squeal or chirp. T/F?
True
ECD [electrochemical degradation] usually occurs within two inches of the hose end—not in the middle. T/F?
True
Some drum brake shoe linings can be inspected through small "inspection windows" in the backing plate. T/F?
True
The power steering pump or alternator mounting bracket is frequently used as the pivot in a manually tensioned accessory drive. T/F?
True
Vehicles not equipped with dipstick may feature a "check plug" accessed from under the the vehicle. T/F?
True
Components on a belt-driven accessory drive commonly include:
Water Pump Power Steering Pump Vacuum Pump A.I.R System Pump Alternator A/C Compressor
Technician A checks V-belt tension by pressing his thumb firmly on the longest straight span of the belt and measuring the amount of deflection. Technician B uses a belt tension gauge. Who is correct?
both A and B
Flexible brake hose should be inspected for all of the following
cracks leakage improper "twisted" installation
To drain a cooling system that does not have a petcock or drain plug in the radiator, ______.
disconnect the lower radiator hose
The "traditional" conditions for checking automatic transmission fluid requires the engine to be warmed-up, _________, the transmission to be __________, and the vehicle to be on a level surface.
idling, in "P"
What type of gloves should be worn when working on the electrical system of a hybrid vehicle?
lineman's
Because the electric motors in hybrid vehicles have very strong permanent magnets people with _____ should not work on or near them?
pacemakers
Oil contamination will cause belts to ______.
swell and soften
