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1990 m 923a front axle question

old mack man

New member
10
1
3
Location
staten island new york
hello all I'm new to military trucks but have been around mack dump trucks for 37 years owning 5 now driving and fixing my question is how do i engage the front axle when i flip the dashboard switch light comes on dash i hear air leaking and then light goes out what can be the problem how to test front axle for lockup
 

dawico

Member
728
1
18
Location
Lampasas,TX
When you shift into low range the front axle will lock up automatically. I have disabled this feature on my truck, but my dash switch still works.

The shifter has a washer that hits a little lever underneath the truck and is simple to disable if you choose to do so.

As far as the dash lever goes, I can't offer any help there.

I am sure someone will be along to help but the maintenance TMs would be a good place to start.
 
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