brand new 3" drums and shoes
- Thread starter 67azcruizr
- Start date
This site may earn a commission from merchant affiliate
links, including eBay, Amazon, Skimlinks, and others.
What do you mean by 3" drums. I have a mid to late seventies FF with larger drums than the same time period FJ40. If this is what your talking about. My 8/80 FF looks to have the same drum as a FJ60.
- Thread starter
- #3
i'm not sure what vehicle they came stock on John, I thought they might have came on a front end of a non-usa troopie or 45.
the shoes are 3" wide as opposed to the standard (2 1/2")?. the drums are specific to the 3" shoes. I picked them up thinking that they could be used as an odd upgrade (little bit more surface area), but they will not fit into a standard backing plate on a rear axle, early or later.
I have not seen backing plates, front or rear, specific to these drums in any of my parts books.
maybe someone will chime in that knows some info about them.
the shoes are 3" wide as opposed to the standard (2 1/2")?. the drums are specific to the 3" shoes. I picked them up thinking that they could be used as an odd upgrade (little bit more surface area), but they will not fit into a standard backing plate on a rear axle, early or later.
I have not seen backing plates, front or rear, specific to these drums in any of my parts books.
maybe someone will chime in that knows some info about them.
Do these drums have ribs for cooling on them? Why don't you post a picture. The type I'm talking about are common in Canada and can buy them cheap. The problem is these are monsters and shipping kills the deal.
I remember using my FF to haul a FJ40 out of a junk yard. Found the drum brake wheels wouldn't seat properly on the back. Lucky the wheels the 40 had on the front were from a 60 series and fit fine. The drum brake wheel went to the front and I towed it home.
I remember using my FF to haul a FJ40 out of a junk yard. Found the drum brake wheels wouldn't seat properly on the back. Lucky the wheels the 40 had on the front were from a 60 series and fit fine. The drum brake wheel went to the front and I towed it home.
Looking for 3-inch rears on a 45 longbed.
I believe part numbers:
42431-60020 with
47655-60010 or 04495-60020 or 04495-60070.
If these sound correct, I will buy 'em as you've advertised. Are they Toyota parts?
Lots of conflicting numbers out there--are your parts numbered or stamped?
If these are not your numbers, or unsure, a photo or two might help decide if they will fit my application.
Thanks.
I believe part numbers:
42431-60020 with
47655-60010 or 04495-60020 or 04495-60070.
If these sound correct, I will buy 'em as you've advertised. Are they Toyota parts?
Lots of conflicting numbers out there--are your parts numbered or stamped?
If these are not your numbers, or unsure, a photo or two might help decide if they will fit my application.
Thanks.
That front drum was listed for use worldwide on a lot of different Land Cruisers from 8/80-4/86 for the "General" market and for Australia:
BJ40,42,43,45,46
HJ47
FJ40,43,45.
I don't have info on the 60 series, or the JDM uses, or a breakout for the USA specific market.
Actually holding one in-hand, it quite possibly could fit other situations, with or without some modifications, but the above is all I came up with.
I woulda gladly bought them if I knew they fit.
Thanks, anyway.
BJ40,42,43,45,46
HJ47
FJ40,43,45.
I don't have info on the 60 series, or the JDM uses, or a breakout for the USA specific market.
Actually holding one in-hand, it quite possibly could fit other situations, with or without some modifications, but the above is all I came up with.
I woulda gladly bought them if I knew they fit.
Thanks, anyway.
Bear:
The "wide" front drum fits on the "wide" rear FF drums. I swapped one of the drums from my front axle to the rear (late model 40 FF stuff), so I'm sure it would work.
The pads are still available from Toyota (or were two years ago). I might have mentioned in the part number in my 45 thread, but if not I am sure I've got the box sitting around at the shop...
Dan
The "wide" front drum fits on the "wide" rear FF drums. I swapped one of the drums from my front axle to the rear (late model 40 FF stuff), so I'm sure it would work.
The pads are still available from Toyota (or were two years ago). I might have mentioned in the part number in my 45 thread, but if not I am sure I've got the box sitting around at the shop...
Dan
Back at 'cha buddy.
Dan
Dan
- Thread starter
- #13
finally found them in one of my parts books, the dums may interchange but the shoes definately will not. while the rears changed over to a single cylinder system, the fronts retained the dual. still trying to figure out if the backing plates for these were "unique", they did not fit a rear 70 series axle I have here?
it also looks like those brake shoe numbers starting in "04495" are for linings only?, not the entire shoe.
it also looks like those brake shoe numbers starting in "04495" are for linings only?, not the entire shoe.
Last edited:
- Thread starter
- #14
Dan, on the vehicle you swapped the drums, did the rear axle have a single brake cylinder WITHOUT a parking brake configuration?
Dual brake cylinder without parking brake.
Front axle: (from which I cannibalized a drum)
Rear axle: (with and without the drums on)
Dan
Brake drum swapping--front to rear--troopies and pickups.
It appears that from Sept. 1975-July 1980, J4-series trucks that came with front drums got a 3-inch finned drum (43512-60020) for the FRONT axle.
The FJ45 and HJ45 also used this same 3-inch finned drum on their REAR axles--and can be swapped, front to rear, as Dan suggested.
Then beginning in August 1980, a different, non-finned but 3-inch, drum (43512-60030) was used on J4-series FRONT axles.
However, a narrower non-finned drum (42431-60020) was used on the REAR of the FJ45 and HJ45/47, including the full-floater.
Because of profile differences on the edges and lips of the two drums, these CANNOT be swapped front to rear; up to the end of production, April 1986.
Not sure if changing-out backing plates might be possible, but simple drum swapping is out for the later troopies and pickups.
First photo is 43512-60030 front drum 8/80 up (Drum "A") side profile.
2nd photo is 42431-60020 rear drum 8?80 up (Drum "B") side profile.
3rd photo is Drum A depth, nearly 3-1/2 inches.
4th photo is Drum B depth, exactly 3 inches.
5th photo is Drum A with a deeper outer face recess.
6th photo is Drum B with a much shallower face recess.
It appears that from Sept. 1975-July 1980, J4-series trucks that came with front drums got a 3-inch finned drum (43512-60020) for the FRONT axle.
The FJ45 and HJ45 also used this same 3-inch finned drum on their REAR axles--and can be swapped, front to rear, as Dan suggested.
Then beginning in August 1980, a different, non-finned but 3-inch, drum (43512-60030) was used on J4-series FRONT axles.
However, a narrower non-finned drum (42431-60020) was used on the REAR of the FJ45 and HJ45/47, including the full-floater.
Because of profile differences on the edges and lips of the two drums, these CANNOT be swapped front to rear; up to the end of production, April 1986.
Not sure if changing-out backing plates might be possible, but simple drum swapping is out for the later troopies and pickups.
First photo is 43512-60030 front drum 8/80 up (Drum "A") side profile.
2nd photo is 42431-60020 rear drum 8?80 up (Drum "B") side profile.
3rd photo is Drum A depth, nearly 3-1/2 inches.
4th photo is Drum B depth, exactly 3 inches.
5th photo is Drum A with a deeper outer face recess.
6th photo is Drum B with a much shallower face recess.
Hard to tell from just drawings and part numbers in the books.
But things changed in 8/80 for the rears; for a few years the earlier front backing plates could be used on the later fronts.
But with the advent of the single rear actuating brake cylinder, you'd be hard-pressed to swap out the earlier rear backing plates for use on the later shoes. The front backing plates do seem a lot beefier than the later rear ones. And even though there were choices for rear brakes that did NOT use the cable actuators for the parking brake, those components could also get in the way of retro-fitting an earlier backing plate.
Seems like a lot of times it would be nice to sit down for a chat with the Toyota engineers and get answers as to why they modified components as they did. Certainly the ability to swap front drums to the rear would save space at the parts depot, the supply chain, and development costs at the design and production levels.
I don't think the product liability lawsuits were such a big thing back in the 70s and 80s as they are today, so there are likely sound engineering reasons for the changes--I hope not the cost-saving bean counters we have today or the lightening done to increase the mileage numbers.
If you can figure out how to swap fronts to rear for these later models, please post up.
But things changed in 8/80 for the rears; for a few years the earlier front backing plates could be used on the later fronts.
But with the advent of the single rear actuating brake cylinder, you'd be hard-pressed to swap out the earlier rear backing plates for use on the later shoes. The front backing plates do seem a lot beefier than the later rear ones. And even though there were choices for rear brakes that did NOT use the cable actuators for the parking brake, those components could also get in the way of retro-fitting an earlier backing plate.
Seems like a lot of times it would be nice to sit down for a chat with the Toyota engineers and get answers as to why they modified components as they did. Certainly the ability to swap front drums to the rear would save space at the parts depot, the supply chain, and development costs at the design and production levels.
I don't think the product liability lawsuits were such a big thing back in the 70s and 80s as they are today, so there are likely sound engineering reasons for the changes--I hope not the cost-saving bean counters we have today or the lightening done to increase the mileage numbers.
If you can figure out how to swap fronts to rear for these later models, please post up.