Hoses & Testing equipment Flashcards
Name 4 ways to keep contaminants out of your hydraulic system
- Clean area around openings
- Change oil after inital 50 hours
- Check oil before use
Name 5 components to inspect when doing a line inspection
- Hoses & lines
- Hose routing
- Inspect flex points
- Couplings
Why do we need efficent sealing in a hydraulic system?
- Stop air ingress
- Particulates
- Water
What effects would air in the system have?
- Air entrainment
- Heat
- Loss of lub
- Loss of efficiency
What effect would particulate contamination have on a system?
- Scoring
- Wear
- Loss of efficiency
- Blocked filters
What effect would water in the system have?
- Erosion
- Corrosion
- Loss of lub
- Loss of efficiency
- Emulsification
Name the changeover fluid
Rustveto NTP 32
What is the lifespan of a PTFE hose?
15 years
What is the flexi hose register form number?
S3171
Name the 4 categories for the service life of a flexi hose
- CAT A (5A) -High risk
- CAT B (10A)-Moderate risk
- CAT C (15A)-Low risk
- CAT D (on condition) - V ,low risk
A = years ie; 5A = 5 years
Name the springs inside lip seals
Garter spring
Couplings
Name 4 types of couplings & their pressure rating
- Aeroquip (207-310 bar)
- Keelering (680 bar)
- Swagelock (750 bar)
- Flat faced instant
The HSU is to be used when?
Hydraulic swaging unit
Making pipe fittings over 25mm
The PCM 400 checks the oil for?
- Oil temp & pressure
- Particulate
- Viscosity
Before use flush with rustveto ntp 32
When do we flush hydraulic equipment?
After….
* Installation
* Repairs
* Intial 50hrs
* Tests indicate
