AbleThought Posted September 10, 2016 Share Posted September 10, 2016 Hi! My break booster seal is leaking. I am going to need a new break booster and possibly a new master cylinder. I called the parts store and was getting pricing and they gave me two options a set up for the 3/4 ton pick-up a set up for a one ton pick-up I'm assuming mine is a 3/4 ton as that's what I'm riding on in the 83 Sunrader however is the one ton set up an option? If so would I benefit from it as I have a one ton rear end? Thanks ive included a pic of my mastercylinder / booster Quote Link to comment Share on other sites More sharing options...
darrel Posted September 10, 2016 Share Posted September 10, 2016 That looks like your Brake Master Cylinder is leaking to me. Quote Link to comment Share on other sites More sharing options...
AbleThought Posted September 10, 2016 Author Share Posted September 10, 2016 1 hour ago, darrel said: That looks like your Brake Master Cylinder is leaking to me. Think your right. Not sure what to get though 1 ton or 3/4 ton Quote Link to comment Share on other sites More sharing options...
linda s Posted September 11, 2016 Share Posted September 11, 2016 1 ton. The bore size should be 15/16. All the other trucks have a bore size of 7/8. Toyota didn't really call it a 1 ton at this age. It was the heavy chassis but 1 ton will do. Toyota part http://www.toyotapartsdeal.com/oem/toyota~cylinder~assy~master~w~o~booster~47201-35270.html?Make=Toyota&Model=Pickup&Year=1983&Submodel=&Filter=(d=USA;1=22R;5=MTM;6=4F;7=HVY;9=IV)&Location=brake-master-cylinder,,47210 At Oreilly's for 1/3 the cost http://www.oreillyauto.com/site/c/detail/OBH3/112248/01292.oap?year=1983&make=Toyota&model=Pickup&vi=1277197&ck=Search_01292_1277197_2572&pt=01292&ppt=C0066#itemDetailTab Linda S Quote Link to comment Share on other sites More sharing options...
AbleThought Posted September 11, 2016 Author Share Posted September 11, 2016 12 hours ago, linda s said: 1 ton. The bore size should be 15/16. All the other trucks have a bore size of 7/8. Toyota didn't really call it a 1 ton at this age. It was the heavy chassis but 1 ton will do. Toyota part http://www.toyotapartsdeal.com/oem/toyota~cylinder~assy~master~w~o~booster~47201-35270.html?Make=Toyota&Model=Pickup&Year=1983&Submodel=&Filter=(d=USA;1=22R;5=MTM;6=4F;7=HVY;9=IV)&Location=brake-master-cylinder,,47210 At Oreilly's for 1/3 the cost http://www.oreillyauto.com/site/c/detail/OBH3/112248/01292.oap?year=1983&make=Toyota&model=Pickup&vi=1277197&ck=Search_01292_1277197_2572&pt=01292&ppt=C0066#itemDetailTab Linda S @linda sSuper helpful! I'll pick this up at oriellys.. I found these two break boosters on that same site. http://m.oreillyauto.com/h5/r/oap/site/c/detail/OBH3/535175/01305.oap?year=1983&make=Toyota&model=Pickup&vi=1277197&ck=Search_Break+booster_1277197_5554&search=true&keyword=Break+booster http://m.oreillyauto.com/h5/r/oap/site/c/detail/OBH3/535156/01305.oap?year=1983&make=Toyota&model=Pickup&vi=1277197&ck=Search_Break+booster_1277197_5554&search=true&keyword=Break+booster which one do you think. Both discriptions are throwing me off as one has 4 wheel drive as a bullet point and the other says Except 1 ton as a bullet point. Quote Link to comment Share on other sites More sharing options...
zero Posted September 11, 2016 Share Posted September 11, 2016 The terms "3/4 ton" or "1 ton" are useless. You need a brake-booster for a 83 Toyota with a model-code RN44L-KDA3W. Toyota OEM master-cylinder is # 47201-35270. Cardone # is 132248. Dorman # is M39658. I used Orielly's parts interchange and their database comes up with the wrong master-cylinder (NMC1894). It only has a 7/8" bore. NAPA comes up with the correct cylinder with their interchange - part # NMC2799. We do not have any Orielly's here yet, but there is a new one being built. I will say I've had to use the twice when travelling, and their parts interchange is awful. Quote Link to comment Share on other sites More sharing options...
zero Posted September 11, 2016 Share Posted September 11, 2016 Just curious - why do you need a replacement booster? Is your's stuck? I've never seen one go bad on a Toyota (yet); Quote Link to comment Share on other sites More sharing options...
linda s Posted September 11, 2016 Share Posted September 11, 2016 The part I posted at Oreilly says 15/16 bore and I come up with that same part when I do their interchange search with the Toyota part #. Don't know why JD got the wrong numbers Linda S Quote Link to comment Share on other sites More sharing options...
Derek up North Posted September 11, 2016 Share Posted September 11, 2016 Cardone 132248 is described as a master cylinder WITH reservoir. Probably explains the difference, before battle-lines are drawn. Quote Link to comment Share on other sites More sharing options...
zero Posted September 11, 2016 Share Posted September 11, 2016 The master-cylinder that comes up when I do an OEM cross-reference at Orielly has a 7/8" bore that is incorrect. Note though it also says the part "may" be incorrect. NAPA comes up correct. So does Rock Auto. Also note that in 1983, there was no full-floating rear with the bigger brakes in back. I thought that might effect the choice of master-cylinder. Seems not. The later trucks that came OEM with a full-floating dually also have the 15/16" bore master-cylinder. Quote Link to comment Share on other sites More sharing options...
linda s Posted September 11, 2016 Share Posted September 11, 2016 Somehow your Toyota part number went in wrong at Oreilly. Looks like 47207 instead of 47201. Linda S Quote Link to comment Share on other sites More sharing options...
linda s Posted September 11, 2016 Share Posted September 11, 2016 30 minutes ago, Derek up North said: Cardone 132248 is described as a master cylinder WITH reservoir. Probably explains the difference, before battle-lines are drawn. Yes it's hard to find ones with reservoirs. Good to know there are some out there. Linda S Quote Link to comment Share on other sites More sharing options...
zero Posted September 11, 2016 Share Posted September 11, 2016 8 minutes ago, linda s said: Somehow your Toyota part number went in wrong at Oreilly. Looks like 47207 instead of 47201. Linda S Yes. That's what I get when I don't wear glasses. Quote Link to comment Share on other sites More sharing options...
AbleThought Posted September 12, 2016 Author Share Posted September 12, 2016 On September 11, 2016 at 9:10 AM, jdemaris said: Just curious - why do you need a replacement booster? Is your's stuck? I've never seen one go bad on a Toyota (yet); it was my understanding that when the master cylinder seal goes break fluid gets into the booster which eats away at the diaphragm and ruins it. So I figured I'd do both if I'm going to be replacing the cylinder. Quote Link to comment Share on other sites More sharing options...
AbleThought Posted September 12, 2016 Author Share Posted September 12, 2016 Can't find the booster Quote Link to comment Share on other sites More sharing options...
zero Posted September 12, 2016 Share Posted September 12, 2016 Seems to be no shortage of boosters around. Like I said earlier, I don't recall ever finding a bad booster on a Toyota truck. Either your's holds a vacuum or it does not. Pretty easy to test. If you had brake fluid leaking into it, and the booster was bad, your engine would of been smoking like crazy from burning brake fluid. That used to be a common problem in 60s British cars with Girling brake systems. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.