I replaced front/rear rotors and pads 2.5yrs ago, a month ago I replaced the worn front pads, the rear pads were like new. I think the 73 series has a light rear and with a lift, the axle is even higher, moving the LSPV rod lower and closing the flow to the rear calipers. If I didn’t do this, I’d imagine my rear brake pads would be *new* for the next 10yrs. I’ll keep an eye on the pad wear but braking is way better now! Thanks, I’ll keep that in mind about the rear locking up but it seems like it’s finally working like it should. If front and rear pads wear about the same and braking is improved, I think that’s a win.
Thanks for the advice, I just tested it and the rears definitely lock up under hard stops. I don’t think too early but I’ll adjust and bring it down some. The axle mount is way too low though.
Hi
So, I understand your truck is lifted. That's the issue. The mounting point for the LSPV leaver needs to be raised respectively and the LSPV needs to be adjusted. Often that’s not considered when doing a lift. I had to learn this the hard way on my BJ73, too.
@clintnz is right. Let me tell how I did it:
I put some square tubing under the mounting pin on the axle.
One can also extend the pivot bold thread respectively by welding a stud to it.
Clean the LSPV with some brake cleaner. Under the rubber boot is a little pin, the rod rests on: Make sure it moves. Travel is a few mm only.
Load the truck with normal load (fuel, driver, maybe permanent installations like drawers, equipment you always carry....)
Attach the leaver rod to the axle. Pre-adjust it in a way the rod only slightly touches the pin in the LSPV. You can feel it touching when slightly moving the rod. Preset the adjustment pivot bold on the axle so it still allows about 3/4 of thread to move the rod further up, 1/4 of thread to move it down. If this is not possible, you need to move the mounting point up further.
Go to a safe invironment and do hard test stops. Have an observer monitor the axles locking behavior from the side. Start on solid ground (tarmac).
At first, the rear will not break properly as the LSPV is basically off, still: Adjust the LSPV rod upwards using the adjuster bold on the axle. Go in small increments (2 turns on the nut each). You will notice the rear brake improving. The truck will sink in less on the front. Get it to the point you manage the brakes to lock on hard emergency stops. ** The front must lock before the rear ** (Observer). If the rear locks before the front does, lower the rod a bit.
Switch to loose ground / gravel and repeat. The rear brake will lock earlier now. Make sure the rear doesn't lock before the front, still. Maybe you need to lower the LSPV rod a slight bit again to achieve that on gravel.
I'm glad I could make you aware and advice. Safe travels!
Ralf
Pretty much sums up the driving experience of a 70 series. 
