<HR style="COLOR: #d1d1e1" SIZE=1 itxtvisited="1"> <!-- / icon and title --><!-- message --><TABLE width="100%" border=0 itxtvisited="1"><TBODY itxtvisited="1"><TR itxtvisited="1"><TD vAlign=top itxtvisited="1">hi folks, it's my turn in the barrel. just finished full rebuild of brake system, lines, master, wheel cyliders, shoes--soup to nuts! noticed a small leak on brass block that attaches to back of master cyl. need to replace this block! i would think that most any 1.5 ton or bigger would have this part, but am not positive. master cyl. # is fd4570 and block has 3 lines exiting with shouldered bolt going through center. have sent e-mail to chucks trucks, awaiting answer, so thought i would put feelers out here. anybody hiding one of these or know where i might find one? parts stores have 2 line, but not 3 line. would like to keep original, and will persue until found, might end up making one. use truck all the time, so now i'm feeling the pressure. (i have other vehicles, just like my toy). thanks in advance for any and all help!
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It would be pretty unusual for the block itself to be bad; are you sure it isn't one of the copper washers or a thread that's not tight?

 

ross, the block is split on the cone that flare of line seats against. it has decided to spread beyond flare into the thread of block. all lines are new, with factory flares on block, (i did dress seam along flare for better fit, and ,no, i didn't take off too much meat). i new crack was there 18 years ago, but was able to work around problem simply because crack was only on cone. but--- now it grew into threads. it is 66 years old, so who knows how bad it was treated before my possesion? the lines are .25 inch, bigger than one ton so it must be from/for a bigger unit. all components on this system are new, including washers. i am possitive that the block is the culprit! thanks for asking and keeping me on my toes.

 

I have spare parts for 48,49,51,53 F-600 and 51 or 2 F-500, keep most for my projects but know I have those blocks around. If these are help I have no problem in digging one out to send if cant find closer. $10.00 and shipping to cover time and exspences.

 

orin martin, thanks a bunch, i almost hate to ask someone to deplete their stock, as you never know when you might need these items. i will be in contact with chucks trucks on monday, and , if he has, i will buy. if not, will send you an e-mail for info to procede. i truly do appreciate the help!!!!!

 

Did you check Mid 50? or Johns F100? I think they may have it.

 

hey kids, the problem i keep running into is that most aftermarket companies only carry these blocks for trucks up to 1-ton. these have a smaller diameter brake line than 1.5 ton. apparently there isn't enough demand to cover cost of carrying this bigger item. can't blame them for not spending money on something that may never sell!