Cruise liner diff locks

[Nathanwhit1]

Good evening all. I’m after some advice on how my diff locks work on my cruise liner. There’s no air switch or anything on the dash so just wasn’t sure if it’s missing or do they work some other way cheers 

[JoeH]

If it's Mack Camelback then it likely has an "automatic" style inter-axle lock.  As a wheel starts spinning the inter-axle lock on the front of the front driver will start engaging, giving a torque bias towards the axle that still has traction.  If one wheel on each drive axle spins then you're stuck, unless you have the momentum to carry you through the slick spot.  While Mack also made differential locks almost nobody ever ordered them as an option, so your chances of having differential locks is about 1/1,000,000.  But I believe all Mack tandems and camelbacks have either automatic or air operated inter-axle locks.

[mechohaulic]

4 main parts to the mack auto lock.  1-cage / attaches to input shaft:2 =  wedges(dogs) having two sets =3 = drive coupler /slides input shaft ==4- cone /attaches to output shaft.  wedges are between drive coupler and cage. flat steel band on outside of cage keeps wedges from falling out. as  input spins faster. the wedges are pushed out going against the cone connecting power to output .  it's a brief version with wrong titles to parts; sorry. 

[mechohaulic]

for those interested; just looked up mack rear power divider, number of videos also vendors selling the parts(not to take away from Watt's) but to show pictures and proper names of the parts.