emergency brake

[floyd2u]

Looking for A break down of the emergecy brake on A 2003 W22 newmar Kountry star gasser.

Thanks
Floyd

 

[chaz1040]

Why would you want your emergency brake to break down? I'm confused.

 

[floyd2u]

Parts break down whats in that drum.
Floyd

 

[Gary RV_Wizard]

The "emergency brake" is actually a drum brake mounted on the drive shaft where it exits the transmission. It also functions as the parking brake (aka "auto-Park").

Workhorse W-series chassis used the J71 or J72 auto-park brake. I think the W22 is the J71, but not positive of that. UltraRVParts specializes in Workhorse stuff, so you may find help there:
https://www.ultrarvproducts.com/Auto-Park-Brake

The Workhorse Chassis Guide (service manual) is also helpful. Get it free at

http://deserttruckservice.com/pdf%20folder/workhorse_chassis.guide.pdf

 

[floyd2u]

Thanks Gary but A little confused after reading the chassis guide.
My E brake is just A pedal you push down & then release it by pulling on the release
handle like many cars.

Floyd

 

[Isaac-1]

Ah I suspect you have/ had a J71 automatic parking brake that someone may have converted to manual operation. see http://www.oemys-performance.com/j71autopark.htm

 

[floyd2u]

Thanks for the link but that was confusing to me. :-[ How can I tell for sure if it has been converted?
What started my concern I can hear A noise coming from it while driving every once in A while.

Thanks
Floyd

 

[Gary RV_Wizard]

My E brake is just A pedal you push down & then release it by pulling on the release

Yeap, but it is manually activating the driveshaft brake.  Look underneath - I doubt if you will find any cables going to the rear brakes as you often do in a car.

 

[Heli_av8tor]

My W22 has a manual parking brake. I thought the Auto-Park was only on the W24?s. (?)

 

[floyd2u]

I think Heli_av8tor is right look at the  workhorse chassis guide PG 173

Floyd

 

[Gary RV_Wizard]

There is no locking pawl on the rear axle as with cars and light trucks, so "parking" always engages a brake.  The W24 (J72 brake system) is different than the J71 on the W20 & W22, but both use a driveshaft brake to "park".  However, only the J72 is referred to with the name "Auto-Park".

Note that page 173 states that "All W series chassis use a brake mounted on the rear of the transmission..."

 

[darsben]

To further confuse things. Your 2003 may be on a 2002 chassis.  They may or may not be the same parts.
A majority of motor homes where built on the previous year chassis

 

[Gary RV_Wizard]

The 2002-2005 Workhorse W20 & W22 were the same in this regard.  2006 and up are a bit different, e.g. a 6-speed tranny.

 

[darsben]

For the auto brake you are most likely correct but the OP still needs to be sure what chassis year he has.  At some point something  may be different

 

[floyd2u]

Yes its mounted on the rear of the transmission but its not auto park It's manual.
Again read pg 173 16000 ,20700 & 22000 GVWR have a manual brake on the rear of the tranny & 18000,24000 AND the 25500 GVWR has the auto brake.
I will craw under the beast & see if there is any type of hydraulic lines & from what I remember when I looked I don't think there is.

Floyd

 

[Gary RV_Wizard]

I'm sorry if I confused you with my earlier reference to Auto-Park. It is often called that in online sources, even though technically only the J72 has that label.  The point is that it's not a traditional cable to the rear brakes, as on most cars and light trucks.

 

[Bill N]

My W22 has a manual parking brake. I thought the Auto-Park was only on the W24?s. (?)

Correct.  My W22 has a manual brake that is contained in a drum around the drive shaft at the transmission.  I know that it is adjustable as an RV tech did that for me when he was replacing an AC compressor and I mentioned that the brake was not really holding very good.

Bill

 

[floyd2u]

OK now back to my original question doe's anyone have A parts diagram of the E brake system?

TIA
Floyd