I know this post is coming in 5 days later, but I actually just did this bushing replacement yesterday.
There are a total of 6 cab bolts (2 rear, 2 middle, and 2 front).
PREPARATION:
I threaded the removed bolts from underneath, and filled the bushings with PB penetrating oil before hand. I don't think it changed a whole lot, for the sleeves.) The
sleeves become mushroomed out over time and wear, and unintended stress from the cab when weight gets transferred to the sleeve. They are also rusted together, making this a PITA.
BACK 2 BUSHINGS:
The back 2 are sleeved, but usually carry less weight, and were easily punched out for me. (Remove the cab bolt from inside the cab, thread it those 8 or so threads to fill up the nut from the bottom, and get a long extension and hammer away from the inside of the cab. I got it out with about a dozen solid hits with a 3 lb sledge hammer.)
MIDDLE 2 BUSHINGS:
For the middle, due to the dash and other constraints, I couldn't hammer them out. These are fvck!ng impossible. You have to heat up the bottom sleeve enough to expand then hammer from the top again, or cut them out.
NOTE: I would NOT suggest burning out the bushings. I've removed suspension bushings like this before, and it's a great method! However, these bushings have metal sleeves in them, and this method won't do anything for you. Besides, you risk catching your truckcab on fire since it's in such close proximity.
Using a metal cutoff wheel, use the frame as a "guide" to cut horizontally. Make the cut below the top bushing. This way, there is minimal rubber burning, less mess, less smell, less rubber buildup on your grinder shield and on your frame. I actually got burned with some melted rubber on the first side I did. This took me only a mere 3-4 minutes to cut off. It got straight to the sleeve.
FRONT 2 BUSHINGS:
These are simply plug & play, drop-in bushings. Just make sure you lift the cab high enough to remove them.
OLD Ford Rubber (LEFT TO RIGHT):
Back cab sleeved bushing, Middle cab sleeved bushing, & Front engine "open" bushing:
NEW James Duff Urethane (LEFT TO RIGHT):
Back cab sleeved bushing (notice how it is "mushroomed"), Middle cab sleeved bushing (notice the sleeves where I cut the bushing in half), & Front engine "open" bushing:
I hope this helps, for anyone that wants to do this again. Make sure you have plenty of punch combinations to see what works for you, a grinder with a cutoff wheel, penetrating oil, sledge hammer, and multiple washers.
BOLT & NUT SIZE: (Metric) M12 - 1.75
WASHERS: Whatever works! I used a combination of Home Depot 3/4" washers, 1/2 washers, and a couple old stock washers.
Pete