Basic joints and Weld Types Flashcards
How can hydraulic fluid that comes in contact with your skin for prolonged periods harm you?
It can cause cancer
How can a pinhole hydraulic leak harm you?
High pressure fluid can pierce your skill and enter your blood stream which in turn can cause gangrene
Why should a dynamic seal have some leakage?
For lubrication
What condition must the surfaces of a metal-to-metal seal be in before assembly?
It must be flat with no scratches
What tightening pattern must you use to avoid distortion when bolting rectangular surfaces together
Spiral from the centre
How can you determine the correct torque value when you assemble a hydraulic component?
consult the service manual
What is the main purpose of a backup ring for an O-ring?
It supports the o-ring against extrusion.
What type of sealant should you use in tapered pipe threads in hydraulics?
Liquid sealant
Which should have the tighter fit: dynamic O-ring or static O-ring?
static O-ring
What type of piston rings should you use when no cylinder creep can be tolerated?
non-metallic
What is the basic purpose of an accumulator?
It adds pressurized fluid to the system when needed
