Final Drives Flashcards
1
Q
Purpose of final drive
A
Transit drive through 90degrees
Provide gear ratio that reduces the speed at which the gearbox output shaft rotates
Permit an additional and constant gear reduction in transmission system
2
Q
On the hypoid, how much bigger is the pinion diameter? And how much more offset is there? And what dose this produce?
A
30%
1/5 of the wheel diameter
A stronger and larger gear
3
Q
On the hypoid gear, the pinion is moved up and down for light or heavy vehicles? Which is which?
A
Light - pinion is below centre line to lower prop shaft height
Heavy - pinion is above the centre line
4
Q
3 types of worm drive design?
A
Over head
Under slung
Hour glass or hindley
5
Q
How do you measure pre load on bearings?
A
Spring balance
Pre loading gauge
