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Topic: Parking brake (Read 570 times) previous topic - next topic

Parking brake

Went out playing with my GV today. Stopped on a "slight" downhill. set park brake, let up on service brake pedal and GV crept forward. Does pressure on service brake  pedal influence park brake setting? I tried setting again with slightly more service brake pedal, with same result...after a few inches GV stopped. Second attempt, not first.
Thanks,

Jim
'92 Grand Villa 36' w/8.3Cummins mechanical
ORED
Build#4062

Re: Parking brake

Reply #1 –
I understand that the parking brake should hold the coach in place under almost any condition.  In gear or not, hill or flat. Independent of the service brake.  It should be adjustable.  Probably a good idea to have it checked.
Roger Engdahl and Susan Green
2001 U320 3610 #5879 (Home2) - 2014 Jeep Cherokee or 2018 F150
Hastings, MN

Re: Parking brake

Reply #2 –
Turn off the retarder on the next trip and just use the brakes.

Then, slack adjusted are tight. I've never had much luck with the "auto" slack adjusters actually adjusting well.
1998 U270 34'

Re: Parking brake

Reply #3 –
The instructions for my coach are to place the transmission in neutral, depress service brake, flip switch on dash to set....I have no retarder. (or brake lever as does my Travco).

Jim
'92 Grand Villa 36' w/8.3Cummins mechanical
ORED
Build#4062

Re: Parking brake

Reply #4 –
Do you have air brakes or hydraulic brakes?
previous 1984 35 ft ORED 250 HP 3208 Cat       
previous 1998 40 ft U295 CAI 325 hp Cummins
previous 2003 40 Ft u320 build #6140 450 Cummins M11.                                                         
1999 Mazda Miata
Ron, Nancy, Tipper the cat, Max The dog
1997 U 270 36 ft build number 5174 8.3 Cummins

Re: Parking brake

Reply #5 –
Hydrolic....

Jim
'92 Grand Villa 36' w/8.3Cummins mechanical
ORED
Build#4062

Re: Parking brake

Reply #6 –
That is what I thought. If I remember correctly the park brake is a drum on the driveshaft with brake shoes in it, it mat need to be adjusted or the brake shoes may have lost the lining on them
previous 1984 35 ft ORED 250 HP 3208 Cat       
previous 1998 40 ft U295 CAI 325 hp Cummins
previous 2003 40 Ft u320 build #6140 450 Cummins M11.                                                         
1999 Mazda Miata
Ron, Nancy, Tipper the cat, Max The dog
1997 U 270 36 ft build number 5174 8.3 Cummins

Re: Parking brake

Reply #7 –
I have sent you a pm about your park brake, if you have questions, you can call me.
previous 1984 35 ft ORED 250 HP 3208 Cat       
previous 1998 40 ft U295 CAI 325 hp Cummins
previous 2003 40 Ft u320 build #6140 450 Cummins M11.                                                         
1999 Mazda Miata
Ron, Nancy, Tipper the cat, Max The dog
1997 U 270 36 ft build number 5174 8.3 Cummins

Re: Parking brake

Reply #8 –
Several years ago, while we were still researching, someone bought a "new" 'Bird. On the way home they stopped at a rest area, set the parking brake, shut down and headed inside. When they came back their coach was gone and people in the parking lot were all excited about the motor home that rolled off the cliff. No people or pets inside, but the coach was a total loss. After reading about that I decided that I'm going to chock the tires every time I stop. Sometimes, if we're just stopping for lunch and staying in the coach I'll not chock if it seems that we're on pretty level ground, but it we're going to be more than a few feet away from the door the chocks are in place.

Re: Parking brake

Reply #9 –
Quote from: kb0zke –
Several years ago, while we were still researching, someone bought a "new" 'Bird. On the way home they stopped at a rest area, set the parking brake, shut down and headed inside. When they came back their coach was gone and people in the parking lot were all excited about the motor home that rolled off the cliff. No people or pets inside, but the coach was a total loss. After reading about that I decided that I'm going to chock the tires every time I stop. Sometimes, if we're just stopping for lunch and staying in the coach I'll not chock if it seems that we're on pretty level ground, but it we're going to be more than a few feet away from the door the chocks are in place.

The owner of that air brake coach was a brand new RVer.  He was pretty sure he used the  park brake.  Others were a bit less convinced.....
Dan - Full timing since 2009
2003 U320 40' Tag 2 slide

Re: Parking brake

Reply #10 –
On most modern motorhomes the parking brake is spring actuated. When engine running and parking brake off air pressure compresses spring allowing normal air actuated brakes. With brake on, or lack of air pressure, spring is used to apply brake.  I have heard from several people, and found out myself, [lost compressor and ignored low air warning] that spring brakes will slow coach quickly but not near as fast as your regular air brakes.
If I had to park on a steep hill, I would use chocks.
Jim
Jim C.
coachfree, previous 1997, 1999, 2000, and 2003 Foretravels.

Re: Parking brake

Reply #11 –
Quote from: red tractor –
That is what I thought. If I remember correctly the park brake is a drum on the driveshaft with brake shoes in it, it mat need to be adjusted or the brake shoes may have lost the lining on them
Mine is on the driveshaft and my Nephew says it looks to be hydraulically operated but we haven't  determined how or from where as yet(other than the switch on the dash....).
'92 Grand Villa 36' w/8.3Cummins mechanical
ORED
Build#4062
 

Re: Parking brake

Reply #12 –
It should have hydraulic from the power steering pump to release the brake and then has a strong spring in the hydraulic chamber to apply the brake when you flip the dash switch.
previous 1984 35 ft ORED 250 HP 3208 Cat       
previous 1998 40 ft U295 CAI 325 hp Cummins
previous 2003 40 Ft u320 build #6140 450 Cummins M11.                                                         
1999 Mazda Miata
Ron, Nancy, Tipper the cat, Max The dog
1997 U 270 36 ft build number 5174 8.3 Cummins