Auto Park on a John Deer chassis?

[JimInMich]

My 1987 Georgie Boy has an Auto Parking brake. Its built on a John Deer Chassis with a Ford 460. After reading the problems with the AutoPark on GM chassis, I'm wondering if mine is included in that group. I emailed oldusedbear and he wasn't familiar with John Deer chassis systems.

Anyone know?

[tropical36]

JimInMich wrote:

tropical36 wrote:

I'm not sure where this drum is and guessing that it's on the driveshaft.

Yes, I was told it was on the drive shaft behind the trans.

Do you have any indicator lights in your display that says auto anything?

Just a " Park Brake " idiot light

Do you have a park position and does it do the same thing as the knob shown?

Shifter is just like what was on that year steering column in a pickup. When placed in drive/reverse, you have to pull the knob out to disengauge the parking brake. Once shifted back into park, the parking brake will reset itself.

Do you have a manual foot brake or handle as well?

No

With the ignition on and actuating the brake (engine off and out of the park position) can you hear any kind of a pump running that might indicate the release of this brake or must the engine be running for the rig to free roll?

Good idea, I have tried that yet.

I do know if I press the brake pedal with the engine off, I hear what sounds like an electric motor and feel something weird in the pedal.

All new to me, but you definitely have an auto park there of sorts and maybe a whole lot better than the GM design.
Best to educate yourself on it and not be depending on the so called experts who sometimes don't have a clue except for how to charge for not fixing things right.

[JimInMich]

tropical36 wrote:

I'm not sure where this drum is and guessing that it's on the driveshaft.

Yes, I was told it was on the drive shaft behind the trans.

Do you have any indicator lights in your display that says auto anything?

Just a " Park Brake " idiot light

Do you have a park position and does it do the same thing as the knob shown?

Shifter is just like what was on that year steering column in a pickup. When placed in drive/reverse, you have to pull the knob out to disengauge the parking brake. Once shifted back into park, the parking brake will reset itself.

Do you have a manual foot brake or handle as well?

No

With the ignition on and actuating the brake (engine off and out of the park position) can you hear any kind of a pump running that might indicate the release of this brake or must the engine be running for the rig to free roll?

Good idea, I have tried that yet.

I do know if I press the brake pedal with the engine off, I hear what sounds like an electric motor and feel something weird in the pedal.

[JimInMich]

moisheh wrote:
Here is a blurb from the Classic Winnebago Forum:

The parking brake operation is explained in Ford's
Medium-Heavy Duty Truck Shop Manual.
There are two significant differences on this chassis:
The transmission shift linkage is used to apply the
parking brake, and a single drum-type brake is mounted
at the rear of the transmission. These differences do
not affect valve operation or oil flow.
The transmission shift linkage (A) is used to apply the
parking brake. When the shift lever is moved to "PARK", linkage cable (C) rotates cam (D) to engage control valve (E). The parking brake
is released when the brake release knob (B) mounted
under the dash is pulled.
The chassis uses a single-drum parking brake mounted
on the drive line at the rear of the transmission. The
spring-set parking brake cylinder (F) which is mounted
on the left frame rail engages or disengages the drum
parking brake with the cable.

You can find more information by joining that forum, They even have the complete JD chassis manual. JD sold to Oshkosh who sold to Freightliner. Apparently FL and Stepvan parts do have some parts.

Moisheh

Thanx, that was interesting. I dont have a problem with this system at this time, was just worried, after reading about the GM system. I wanted to know which system I had.
I have all the original manuals that came with my MH, including the JD chassis manual, from which I took those photo's from.
I know I'm going to need calipers and the such one day, so I might look into buying them if they are available.

[moisheh]

Here is a blurb from the Classic Winnebago Forum:

The parking brake operation is explained in Ford's
Medium-Heavy Duty Truck Shop Manual.
There are two significant differences on this chassis:
The transmission shift linkage is used to apply the
parking brake, and a single drum-type brake is mounted
at the rear of the transmission. These differences do
not affect valve operation or oil flow.
The transmission shift linkage (A) is used to apply the
parking brake. When the shift lever is moved to "PARK", linkage cable (C) rotates cam (D) to engage control valve (E). The parking brake
is released when the brake release knob (B) mounted
under the dash is pulled.
The chassis uses a single-drum parking brake mounted
on the drive line at the rear of the transmission. The
spring-set parking brake cylinder (F) which is mounted
on the left frame rail engages or disengages the drum
parking brake with the cable.

You can find more information by joining that forum, They even have the complete JD chassis manual. JD sold to Oshkosh who sold to Freightliner. Apparently FL and Stepvan parts do have some parts.

Moisheh

[moisheh]

Unless here is some electrical parts I don't see how it would be anything other than an emergency brake. When you place the shifter in Park do you here anything running? When you take it out of park can you hear a pump? We have had trucks in our P& D fleet that had drum driveshaft brakes. But they were standard transmissions. Strictly an emergency brake. Can you imagine trying to find parts for the JD system? Wasn't the JD chassis bought from another chassis mgr. ?

Moisheh

[RLS7201]

JimInMich wrote:
Here are some pic's taken from the John Deer Chassis manual I have for this GBM. Does it look like the GM autobrake?

No. That is not the same as the Auto Park system used by GM on the P32 chassis.

Richard

[tropical36]

JimInMich wrote:
Here are some pic's taken from the John Deer Chassis manual I have for this GBM. Does it look like the GM autobrake?

Very interesting and like nothing I've ever seen.
The top diagram looks something like the power wheel brake booster and much like GM which uses the power steering pump combo, rather than a vacuum diaphragm.
The middle part of the drawing definitely shows something other than a manual parking brake control, but doesn't look anything like GM's.
The bottom showing the cable actuated drum, I'm not sure where this drum is and guessing that it's on the driveshaft.
So, do you have a drum at the rear of the transmission on the drive shaft?
Do you have any indicator lights in your display that says auto anything?
Do you have a park position and does it do the same thing as the knob shown?
Do you have a manual foot brake or handle as well?
With the ignition on and actuating the brake (engine off and out of the park position) can you hear any kind of a pump running that might indicate the release of this brake or must the engine be running for the rig to free roll?

[wolfe10]

Many chassis manufacturers use driveline brakes for the park/emergency brake. Gas and diesel.

[JimInMich]

Here are some pic's taken from the John Deer Chassis manual I have for this GBM. Does it look like the GM autobrake?

[JimInMich]

gbopp wrote:
Interesting question. I always thought Auto Park was a GM idea.
I've never heard of it on a Ford engine, and I'm assuming a Ford transmission.

Yes, Ford 460 with a C6 trans. Funny thing though, the dash cluster looks like its from a same model year chevy truck.

[gbopp]

Interesting question. I always thought Auto Park was a GM idea.
I've never heard of it on a Ford engine, and I'm assuming a Ford transmission.