02-16-2013, 03:45 PM
A couple of things I haven't mentioned is the wheels & tires are REALLY BIG & HEAVY and PB Blaster. Also on the first two air bags I've had corrosion issues that a thread chaser has come in very handy.
The tag air bag is totally different in size, style & how it is mounted. I put a jack under the tag axle to remove the tire. Removed the 1/4" air line from the combo air inlet & mounting stud. There are two bottom mount 1/2" nuts that are accessed through holes in the tag suspension. There is one 1/2" nut on top and a 3/4" nut on combo air inlet/mounting stud. Once all of the fasteners are removed, pry down on the air bag and lower the jack a few inches. The bag can now be removed--be careful not to damage the brass air fitting.
Once I got the air bag off, I could read all the air spring model numbers, but one--W01-358-937_. Using the numbers on the bottom of the air spring and the cross reference guide in the back of the Firestone catalog I was able to quickly identify my tag axle air spring as W01-358-9378.
The tag air bag is totally different in size, style & how it is mounted. I put a jack under the tag axle to remove the tire. Removed the 1/4" air line from the combo air inlet & mounting stud. There are two bottom mount 1/2" nuts that are accessed through holes in the tag suspension. There is one 1/2" nut on top and a 3/4" nut on combo air inlet/mounting stud. Once all of the fasteners are removed, pry down on the air bag and lower the jack a few inches. The bag can now be removed--be careful not to damage the brass air fitting.
Once I got the air bag off, I could read all the air spring model numbers, but one--W01-358-937_. Using the numbers on the bottom of the air spring and the cross reference guide in the back of the Firestone catalog I was able to quickly identify my tag axle air spring as W01-358-9378.
Steve Bare
1999 Newell 2 slide #531