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06-16-07, 07:04 PM
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#1 (permalink)
| | Forum Lifer
Join Date: Feb 2004 Location: Cloverdale B.C. Canada
Posts: 2,574
| QUESTION does the 76-80 disc brake master have residual valve in the front disc line
I was looking at the EPC today and noticed this valve in both ports on the master for 75/09 - 80/07 FJ40/55 BJ40 disc brake .are these the residual valves ? if so
i thought that it had been posted that there wasn't one in the front, only one in the rear for the drums ,that needs to be removed when swapping to rear disc's ,the epc shows 2 also listing different part #'s for each . is there a residual valve for the disc brakes ? I don't have any in my master ,just curious
maybe i need one .
__________________ Jake S. FJ40,350 small block ,sm465 ,spring over ,cut-N-turn,saginaw,shackle reversal, 38.5 superswampers, 4 wheel disc brakes, OBA=CO2 ,
Warn 8274 ,4x4 labs high steer,Marlin chromo birfs ,lunchbox lockers(front+rear) ,Metaltech Jackson cage   ... ROTW:PBGBOTTLE
.... ... Cardomain Pics
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06-16-07, 07:09 PM
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#2 (permalink)
| | 250+ Club
Join Date: Oct 2006 Location: Tucson
Posts: 563
| I will be interested in the answer. I just bought a master cylinder/booster off of a 76 Pig and have ordered the rebuild kit listed for it from SOR, as I am getting the parts together for a front disc conversion.
However, I haven't taken the old one apart yet.
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Where am I, and who are these people????
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06-16-07, 07:35 PM
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#3 (permalink)
| | Forum Lifer
Join Date: Feb 2004 Location: Cloverdale B.C. Canada
Posts: 2,574
| i have just been digging through my junk pile and found a 76 master ,i am going to try to open it up and take a look
__________________ Jake S. FJ40,350 small block ,sm465 ,spring over ,cut-N-turn,saginaw,shackle reversal, 38.5 superswampers, 4 wheel disc brakes, OBA=CO2 ,
Warn 8274 ,4x4 labs high steer,Marlin chromo birfs ,lunchbox lockers(front+rear) ,Metaltech Jackson cage ... ROTW:PBGBOTTLE
.... ... Cardomain Pics
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06-16-07, 08:00 PM
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#4 (permalink)
| | Forum Lifer
Join Date: Feb 2004 Location: Cloverdale B.C. Canada
Posts: 2,574
| just opened up this one, not sure what year it is , but it has one in both ,the master looks like a disc brake master with the smaller reservoir ,it has the older style residual valves .
__________________ Jake S. FJ40,350 small block ,sm465 ,spring over ,cut-N-turn,saginaw,shackle reversal, 38.5 superswampers, 4 wheel disc brakes, OBA=CO2 ,
Warn 8274 ,4x4 labs high steer,Marlin chromo birfs ,lunchbox lockers(front+rear) ,Metaltech Jackson cage ... ROTW:PBGBOTTLE
.... ... Cardomain Pics
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06-16-07, 08:30 PM
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#5 (permalink)
| | Site Addict
Join Date: Feb 2005 Location: In the Blumpkin Patch
Posts: 1,177
| pgbottle's pic looks identical to my pre-disc '75 M/C. | |
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06-16-07, 08:51 PM
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#6 (permalink)
| | Dain Bramaged Member
Join Date: Jun 2005 Location: Reno, NV
Posts: 6,347
| Quote:
Originally Posted by Mr. Toad  pgbottle's pic looks identical to my pre-disc '75 M/C. | X2 ...
__________________ Dan Johnson
What the large print giveth, the fine print taketh away. Battle Born Cruisers 1975 FJ40, A couple of thingamajigs and a deally bob, fully integrated whatzits, dash board Hula girl (pending spousal approval.)
1998 pair of Pink Panties, now with a doohicky in the front. 1984 FJ60, Detroits F&R and a gawd awful spring lift. Rust never sleeps.
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06-16-07, 09:34 PM
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#7 (permalink)
| | User title
Join Date: Apr 2005 Location: Whitehorse, YT
Posts: 915
| theoretically there was a 2lb one in the front line, as compared to the 6lb one in a drum front/rear, but apparently things will work fine without the two pounder in a disc setup Residual Pressure Valve..
__________________ Quote:
Originally Posted by yooper It's not The Adequate Thread.  | _______________________________________
1975 fj40
2003 xr400
Last edited by gladly; 06-16-07 at 09:41 PM.
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06-16-07, 10:14 PM
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#8 (permalink)
| | Forum Lifer
Join Date: Feb 2004 Location: Cloverdale B.C. Canada
Posts: 2,574
| just went through my stack of vin plates ,looks like that master might of came off of a FEB - 75 fj40
wierd that it has the smaller reservoir
__________________ Jake S. FJ40,350 small block ,sm465 ,spring over ,cut-N-turn,saginaw,shackle reversal, 38.5 superswampers, 4 wheel disc brakes, OBA=CO2 ,
Warn 8274 ,4x4 labs high steer,Marlin chromo birfs ,lunchbox lockers(front+rear) ,Metaltech Jackson cage ... ROTW:PBGBOTTLE
.... ... Cardomain Pics
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06-16-07, 10:15 PM
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#9 (permalink)
| | Dain Bramaged Member
Join Date: Jun 2005 Location: Reno, NV
Posts: 6,347
| Quote:
Originally Posted by pbgbottle just went through my stack of vin plates ,looks like that master might of came off of a FEB - 75 fj40 | I belive March was the cut in for front disk brakes.
__________________ Dan Johnson
What the large print giveth, the fine print taketh away. Battle Born Cruisers 1975 FJ40, A couple of thingamajigs and a deally bob, fully integrated whatzits, dash board Hula girl (pending spousal approval.)
1998 pair of Pink Panties, now with a doohicky in the front. 1984 FJ60, Detroits F&R and a gawd awful spring lift. Rust never sleeps.
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06-16-07, 10:22 PM
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#10 (permalink)
| | Forum Lifer
Join Date: Feb 2004 Location: Cloverdale B.C. Canada
Posts: 2,574
| looked at the parts catalogue again and it also shows a master for the fj40
75-01 / 75-09
that looks more like the one i posted .  guess it is a drum master
__________________ Jake S. FJ40,350 small block ,sm465 ,spring over ,cut-N-turn,saginaw,shackle reversal, 38.5 superswampers, 4 wheel disc brakes, OBA=CO2 ,
Warn 8274 ,4x4 labs high steer,Marlin chromo birfs ,lunchbox lockers(front+rear) ,Metaltech Jackson cage ... ROTW:PBGBOTTLE
.... ... Cardomain Pics
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06-16-07, 11:51 PM
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#11 (permalink)
| | Oh...Durka Durka Durka.
Join Date: Oct 2003 Location: in the shop
Posts: 16,334
| Quote:
Originally Posted by rusty_tlc I belive March was the cut in for front disk brakes. |
In the USA, 08/75 40/55 series trucks recieved the front disc axle... 
Oh, and there should be a residual pressure valve in the disc and drum circuits...
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06-17-07, 02:54 AM
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#12 (permalink)
| | User title
Join Date: Apr 2005 Location: Whitehorse, YT
Posts: 915
| Quote:
Originally Posted by rusty_tlc I belive March was the cut in for front disk brakes. | mine is april/75, fing drums, I thought it was sept. for discs, but if poser says aug, I'll go with that
__________________ Quote:
Originally Posted by yooper It's not The Adequate Thread. | _______________________________________
1975 fj40
2003 xr400
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06-17-07, 08:09 PM
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#13 (permalink)
| | 250+ Club
Join Date: May 2005 Location: spicewood,tx.
Posts: 387
| gladly, mine is also a 4/75. when i got it 14 months ago we had to tow it home, all the time raving how well i tracked. finally got running ,only to find out most all the drums were frozen to the shoes. anyway, after a rebuild they work great. these will stop on a dime. discs maybe someday but a priority now. jim
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jim-almost stock 75/40 -sbc, jeez, let me think
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pbgbottle
Poser
1969 Toyota Land Cruiser, FJ-40
