95 Dakota - Where to find drum size
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Joined: May 2012
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95 Dakota - Where to find drum size
Hello,
Is there a way to find the rear brake drum size without looking at the drum? I heard someone say there was a sticker in the glovebox on certain models, but nothing on mine.
Thanks!
Is there a way to find the rear brake drum size without looking at the drum? I heard someone say there was a sticker in the glovebox on certain models, but nothing on mine.
Thanks!
Champion
Joined: Jan 2013
Posts: 4,737
Likes: 374
From: Northwest Louisiana
Uhh ... not really.
But.
Most drums will have a MAX DIA or Max Diameter note on it.
Obviously, if it's under 10" (under 254mm) then it's a 9 inch drum. Slightly over 10" (or slightly over 254mm) is a 10" drum. (I THINK it's nominally 10.030" or the metric equivalent to that - but that's a darn easy way to tell.)
If your drums don't have that, then pulling one and measuring across the inside is the only way to tell for sure. MIGHT be able to measure around the backing plate ( the circumference ) and see if it's about 31.5" or closer to 28.25" or so (not sure of the exact; that's 10" or 9" circle circumferences). For measuring stuff like that, I tend to use some twine or a cloth tape measure; if I use twine, I mark where it crosses then measure between the marks.
If you decide you want 10", and you don't have but 9" now, you can locate backing plates; pull the axles (note: I'd redo the bearings and seals while they were out!), pull the old backing plates, put on the "new" backing plates, and put all new 10" parts on it.
RwP
But.
Most drums will have a MAX DIA or Max Diameter note on it.
Obviously, if it's under 10" (under 254mm) then it's a 9 inch drum. Slightly over 10" (or slightly over 254mm) is a 10" drum. (I THINK it's nominally 10.030" or the metric equivalent to that - but that's a darn easy way to tell.)
If your drums don't have that, then pulling one and measuring across the inside is the only way to tell for sure. MIGHT be able to measure around the backing plate ( the circumference ) and see if it's about 31.5" or closer to 28.25" or so (not sure of the exact; that's 10" or 9" circle circumferences). For measuring stuff like that, I tend to use some twine or a cloth tape measure; if I use twine, I mark where it crosses then measure between the marks.
If you decide you want 10", and you don't have but 9" now, you can locate backing plates; pull the axles (note: I'd redo the bearings and seals while they were out!), pull the old backing plates, put on the "new" backing plates, and put all new 10" parts on it.
RwP
Thread Starter
|
Professional
Joined: May 2012
Posts: 168
Likes: 3
Uhh ... not really.
But.
Most drums will have a MAX DIA or Max Diameter note on it.
Obviously, if it's under 10" (under 254mm) then it's a 9 inch drum. Slightly over 10" (or slightly over 254mm) is a 10" drum. (I THINK it's nominally 10.030" or the metric equivalent to that - but that's a darn easy way to tell.)
If your drums don't have that, then pulling one and measuring across the inside is the only way to tell for sure. MIGHT be able to measure around the backing plate ( the circumference ) and see if it's about 31.5" or closer to 28.25" or so (not sure of the exact; that's 10" or 9" circle circumferences). For measuring stuff like that, I tend to use some twine or a cloth tape measure; if I use twine, I mark where it crosses then measure between the marks.
If you decide you want 10", and you don't have but 9" now, you can locate backing plates; pull the axles (note: I'd redo the bearings and seals while they were out!), pull the old backing plates, put on the "new" backing plates, and put all new 10" parts on it.
RwP
But.
Most drums will have a MAX DIA or Max Diameter note on it.
Obviously, if it's under 10" (under 254mm) then it's a 9 inch drum. Slightly over 10" (or slightly over 254mm) is a 10" drum. (I THINK it's nominally 10.030" or the metric equivalent to that - but that's a darn easy way to tell.)
If your drums don't have that, then pulling one and measuring across the inside is the only way to tell for sure. MIGHT be able to measure around the backing plate ( the circumference ) and see if it's about 31.5" or closer to 28.25" or so (not sure of the exact; that's 10" or 9" circle circumferences). For measuring stuff like that, I tend to use some twine or a cloth tape measure; if I use twine, I mark where it crosses then measure between the marks.
If you decide you want 10", and you don't have but 9" now, you can locate backing plates; pull the axles (note: I'd redo the bearings and seals while they were out!), pull the old backing plates, put on the "new" backing plates, and put all new 10" parts on it.
RwP
Veteran
Joined: Oct 2017
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From: central Iowa
The 9" typically have fins that are flat, the 10" drums have fins that have a step outward where the drum increases in size, the 9" doesn't have this.
Steve
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The 9" drums look slightly different from the 10" drums, you should be able to recognize which you have by looking through the wheel. If you have steel wheels that block the view you'll have to take one off.
The 9" typically have fins that are flat, the 10" drums have fins that have a step outward where the drum increases in size, the 9" doesn't have this.
Steve
The 9" typically have fins that are flat, the 10" drums have fins that have a step outward where the drum increases in size, the 9" doesn't have this.
Steve
What's weird is the metric units, but I've found metric parts all over the truck. Super weird for a US vehicle.
Max Dia = 230.0
Champion
Joined: Jan 2013
Posts: 4,737
Likes: 374
From: Northwest Louisiana
Yep, those are 9" drums.
10" are something like 270mm.
It's not THAT weird; we were into metrification by then, and it's actually just a number to help make the metrification folks happier.
RwP
10" are something like 270mm.
It's not THAT weird; we were into metrification by then, and it's actually just a number to help make the metrification folks happier.
RwP
Administrator
Joined: Apr 2010
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From: Clayton MI
Yeah, the whole mixture of standard and metric fasteners used throughout the vehicles of that era is really annoying. 
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Professional
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Yeah I guess that was an era for that. Kinda died didn't it? Wish they would just pick one. Metric = evil IMHO.
