Workhorse P32 Towed

[Philippe]

Hello everyone,

Like many I bought an RV with a Workhorse P32 chassis. I got towed for a broken ball joint.

My question is:
Can someone explain to me all the specifics that can be related to a pop-up hose at the radiator end that circulate the transmission fluid after the putting it back on the road for 20 miles.

The Towing procedure was done like this:

1- Towed buy the front
2- Did not remove 4 bolts at the drive shaft
3- Put at neutral
4- Engine running at idle
5- pull for ~25 miles @ ~45-50Miles/Hr

The common knowledge is that it's going to break the transmission. I am looking to understand why by explaining the specific for the pop-up hose at the joint of the radiator !

Thanks for any future reply!

[Philippe]

enblethen wrote:
The gearing in the transmission for reverse is slightly different then low gear in forward. Engine a 5 MPH in reverse is slightly higher then in forward low gear. Reverse could be 1500 RPMs where forward could be 2000 RPMs.

Ok.

For the purpose of the discussion of this post, how can I put your comment as a relation ?

Also, if during towing transportation there is an angle of ??? 5°-15°, would that also be a factor of concern considering how my RV was towed ?

[enblethen]

The gearing in the transmission for reverse is slightly different then low gear in forward. Engine a 5 MPH in reverse is slightly higher then in forward low gear. Reverse could be 1500 RPMs where forward could be 2000 RPMs.

[Philippe]

enblethen wrote:
It could effect only reverse as it is slightly different ratio then low forward gear.

I understand the words, but I don't understand the meaning.
Can you explain please ?

[enblethen]

It could effect only reverse as it is slightly different ratio then low forward gear.

[Philippe]

enblethen wrote:
At idle, the transmission pump is not putting out enough pressure and volumne to lubricate and keep the back half of the transmission cool.
The transmission in neutral is not turning the internal components.
Idle is somewhere around 1000 RPMs, when driving the rig at say 50MPH, the engine is turning about 2000 RPMs.

Are you trying to get the tow company to pay for repairs?

Ok !

The back-half... is it the reverse that is located in the back-half ? (I ask because the forward still works, but not the reverse)

Not the tow company. My insurance of the RV, are on the matter. Because it is like a accident sort of.

enblethen, thank you so much for your great input on this subject.

[enblethen]

At idle, the transmission pump is not putting out enough pressure and volumne to lubricate and keep the back half of the transmission cool.
The transmission in neutral is not turning the internal components.
Idle is somewhere around 1000 RPMs, when driving the rig at say 50MPH, the engine is turning about 2000 RPMs.

Are you trying to get the tow company to pay for repairs?

[Philippe]

enblethen wrote:
No, The pump would not have been releasing high pressure, more apt to be low pressure at idle.
Towing with drive shaft not disconnected or axles removed would have created friction possible destroyer clutches which in turn when you drove the rig got into the valve body and cooling lines creating higher then normal pressure.

Ok!

1- "more apt to be low pressure at idle" What does this mean ? Could you explain please
2- So if I understood correctly, friction would of created small debris that would of got in the cooling lines creating.... boom !
Even if engine was running@idle in neutral ? If so, why ? (please 🙂 )

My last (main)question: Why would it be more friction then in normal use when towed (in the procedure that I describe at the beginning of this post)?

Thanks'

Phil.

[enblethen]

No, The pump would not have been releasing high pressure, more apt to be low pressure at idle.
Towing with drive shaft not disconnected or axles removed would have created friction possible destroyer clutches which in turn when you drove the rig got into the valve body and cooling lines creating higher then normal pressure.

[Philippe]

enblethen wrote:
Towing with the drive shaft connected or not pulling the rear axles, spun the output of the transmission causing overheating of the transmission and fluid.
Even with engine running, the fluid is not circulated in the transmission.

ok !

Then base on what you said, my hypothesis would be that over pressure could of weaken the transmission fluid hose at the connection point during my first towing ride.

Is this a possible assumption ?

[enblethen]

Towing with the drive shaft connected or not pulling the rear axles, spun the output of the transmission causing overheating of the transmission and fluid.
Even with engine running, the fluid is not circulated in the transmission.

[J-Rooster]

Philippe, I have a Workhorse Chassis on my coach and if it's towed it has to be from the rear with the drive line disconnected and the transmission in neutral. Good Luck

[Philippe]

TriumphGuy wrote:
I think Philippe meant "burst" (C'est vrai Philippe, s'exploser ou deborder?)

If I understand correctly, a hose which transports the transmission fluid burst?

Burst !

Exactly, the ones that transport the transmission fluid.

[TriumphGuy]

I think Philippe meant "burst" (C'est vrai Philippe, s'exploser ou deborder?)

If I understand correctly, a hose which transports the transmission fluid burst?

[Philippe]

charwan wrote:
What do you mean by "Pop up hose at the radiator'.

From what my mechanic told me and I understood, it was detach from the bolt which is screwed at the radiator.

from what I saw, it is the radiator that is located at the most front when looking trough the "hood" trap. There is two ose connection on the radiator on the left side(front looking) one at the almost the top, and the other one under that one.