Unit 4 Flashcards
What is formed when iron reacts with oxygen and moisture?
Rust
What are the four basic parts of a jack assembly?
Piston, cylinder, a head unit and pit support steel
What type of jack uses multiple sections or pieces of a piston within one cylinder?
Telescopic
What is the purpose of a cylinder?
Holds the oil
What type of protection is required for buried cylinders?
Corrosion
Where does the corrosion occur in the cathodic protection system?
Anode
What must be installed at the base of the plunger to prevent the plunger from leaving the cylinder?
Stop ring
What is one advantage of a telescopic jack?
Requires no hole/shallow hole
What is used to secure the top of the plunger to the underside of the car frame?
Platen plate
What are some of the main components of the pit support structures of inground jack assemblies?
Buffer support plate, buffer springs, & support stands
What type of jack assembly has the same plunger diameter throughout the entire length of travel?
Single stage
What is the purpose of the gland packing for a hydraulic elevator?
Keep oil from leaking out of cylinder
What may be required to stabilize telescopic plungers?
Follower guide
What is the maximum roping ratio allowed for rope hydraulic elevator?
1:2
What type of cylinder protection system is monitored by evacuating liquid or moisture?
PVC encapsulation
