Driveline Service Flashcards
Tubes should be visually and accurately measured for what?
Run out
They slip joint should be checked for?
Twisted spines
Looseness of splines
Damage from lack of lube
A loose trans or diff yolk retaining nut can cause…
Excessive movement at this joint which will shorten joint life.
When checking driveline, what is check number 1
Evidence of regular lube and maintenance
What can cause driveline part to fracture?
Seized part is put under stress
Shock loads
What may indicate a issue with a u joint
Rust at one or more of the joint bearing caps.
Not all caps will purge grease
U joint spalling
May be caused by heavy loads resulting in a breakdown of the bearing surface
U joint end galling
May be caused by lack of lube and/or incorrect working angles
U joint false brinelling
Typically caused when joint is working at 0 degree angle and/or lack of lube
U joint pitting
May be due to contaminated lube
U joints grease fittings should be installed how?
pointing toward shaft and aligned with slip joint fitting
What is the proper u joint working angle to ensure proper lube?
1 degree
T/F a balanced driveline vibration should be eliminated if the joint working angles are within 1 degree?
True
How are U joint working angles affected by shaft speed?
The faster the shaft spins the smaller the angle must be
How could a driveline be in phase, but out of balance?
Slip joint was installed 180 degree out of alignment
