: HPD44 2 piece dual piston caliper removal


BillaVista
06-23-2002, 02:18 PM
I'm rebuilding the HPD44 that came out of the 79 F250 (junked), so I can slap it in the 78 F250 camper Special (tow rig), so I can use the 78s HPD60 in my buggy.

It seems to me, the calipers must be seperated into 2 pieces, then the hub removed to get the inner part of the caliper off....is this right or am I missing something?

I removed all the little bent shims and the grub screw thingey, then removed the 2 bog bolts seperating the caliper into 2 bits, but I can't see how the inner part of the caliper is removed without removing the hub too?

I suppose, for a regular brake job...maybe it is common to only replace the outer part of the caliper (with the pistons)?

alx
06-24-2002, 05:33 AM
u should'nt have too seperaste the the caliper take out the banjo
bolt then use a small punch to knock of fthe slide clip calipers should come loose .
they are the same as the 1/2 tons just bigger .

PTO DAVE
06-24-2002, 07:00 AM
Alx is right.9/16 bolt out,hit clip/slide thingy with hammer,it will fall off.DO NOT overtighten bolt when putting back together it WILL snap off. Hard to remove!

FearMe
06-24-2002, 07:34 AM
If my sorry old brain remembers right it seem the ones on my 78 D60 you did have to take a couple of bolts out and split the two halves somehow. I have the wheels off right now and if you need to know for sure I can look tonight.

BillaVista
06-24-2002, 07:42 AM
Fearme...yea, have a look if you wouldn't mind, and post what you see.

I just can't see how the caliper can possibly some off otherwise. The shape of the caliper bracket slide surfaces keeps the caliper captive---i.e you can't just lift it off the rotor. And you can't slide it off either

I'll try and post some pics later

FearMe
06-24-2002, 10:31 AM
I've been thinking about it a bit. I'm pretty sure that the two halves unbolt, and they were tight M/F'ers. I'll check tonight. I also have a pair of the dual caliper one's from a 3/4 ton HP 44. They are different size but I still think they come apart the same way.

BillaVista
06-24-2002, 03:59 PM
I just had a re-look.

The "ears" on the inner half of the caliper, into which the bolts thread that hold the 2 halves together are just a bit too big to clear the rotor and allow the inner half to slide out.

So the hubs have to come off.

Unless someone used the wrong size rotor (too bog) before I got the axle.

Bill

FearMe
06-25-2002, 06:58 AM
I checked mine last night. The HP 60 callipers have two bolts on the inside of the caliper that come out and the two halves seperate off the rotor. The ones that are slightly smaller (still dual piston) that I believe came of a 3/4 Ton D44 seem come off like 'normal'.

BillaVista
06-25-2002, 05:24 PM
Just so you all don't think I'm crazy, here are some pics showing how the outer part of the 2 piece caliper won;t slide off the rotor, even after being seperated.

http://www.rightcoastcrawler.com/billaVista/Ford_Brakes/DCP_4596.JPG

http://www.rightcoastcrawler.com/billaVista/Ford_Brakes/DCP_4597.JPG

http://www.rightcoastcrawler.com/billaVista/Ford_Brakes/DCP_4598.JPG

FearMe
06-25-2002, 05:33 PM
I think those come off like 'normal. I may be wrong but here is what I would do. Look at the middle picture. there is a gold colored spacer looking thing. Drive it out. Those things are rusted up pretty bad. Take a pick and scrape all the loose crap you can off the ends of the caliper where it rides in the bracket. Hose it down good with wd40 and bang one end of the caliper in the same direction as the wheels roll till it seats in one end of the bracket. The other end should clear the bracket and lift out. Sorry I can't figure out anything else, if it was a 60 they would definatly unbolt but I think you'll find the ones you have just slide off on one end, pull the other end free and lift off. HTH

Alpo
06-25-2002, 05:38 PM
Billavista: in the first photo you just posted there is a 'T' shaped slider just at the bottom of the photo next to the threads for the Bolt to keep the two halves together. this looks very rusty but that needs to be slid out and that will allow the caliper to pull off. My D-60 callipers are off of my axle and they have not been separated. I didn't do the work as it is at the shop that will rebuild the axle but they got it apart without seperating the calipers. I know this is kind of vague but I hope it helps.


Eric

BTW; damn, did that thing come out of a swamp??:eek: :laughing:

Alpo
06-25-2002, 05:41 PM
Fearme: I think we have the same idea but we're looking at opposite ends of the caliper:D


Eric

alx
06-25-2002, 05:59 PM
WTF was that sitting at the bottum of the sea :eek:
top pic bottom of the caliper the t shape slider needs to come out
they are the same as 1/2 tons :rolleyes: :D

BillaVista
06-25-2002, 07:15 PM
Holy Fawk :eek:

Good eyes lads - glad I posted the pics. I see exactly what you mean....and you can see how I wouldn't know that was removable!!

I think the bottom of the sea or a swamp would have preserved it better. That's waht 25 years of plowing salty snow on the Atlantic coast will do !!

Now you know why "just find one in a junkyard" is an irritating idea for us over here !