Free 7 Day Trial RV GPS App RV Trip Planner Campground Reviews RV Maintenance Free 7 Day Trial ×
RV Trip Planning Discussions

Go Back   iRV2 Forums > MOTORHOME FORUMS > Class A Motorhome Discussions
Click Here to Login
Join iRV2 Today

Mission Statement: Supporting thoughtful exchange of knowledge, values and experience among RV enthusiasts.
Reply
  This discussion is proudly sponsored by:
Please support our sponsors and let them know you heard about their products on iRV2
 
Thread Tools Search this Thread Display Modes
 
Old 12-11-2016, 08:39 AM   #15
Senior Member
 
mhbell's Avatar
 
Thor Owners Club
Ford Super Duty Owner
Georgie Boy Owners Club
Join Date: Feb 2011
Location: Ogden Utah
Posts: 571
here is a excerpt from a book on the subject

got this excerpt from the below PDF. So even when in Tow Haul Mode it will still shift into OD when engine is not under load and speed is around 50 or 60 MPH. I use mine when climbing hills and mountain passes and when going down hill. I also use it whenever I go through towns and traffic, especially when towing my toad.
Mel

Here’s a run down on Ford’s “Tow/Haul” mode when engaged:
• Raises the shift point RPMs and internal trans shift pressures for a given
engine load
ƒ Maintains the ability to engage overdrive gear, but eliminates
the possibility of engine lugging
ƒ Controls shifting frequency to avoid shift hunting and
unnecessary torque converter cycling
• Engages the “coast clutch” and uses other internal trans clutch/band
application strategies in order to achieve engine braking through all gears as
the transmission coasts down.

Tech Tip - August 06.pdf
__________________
Downsized to a 1995 Layton Travel Trailer by Skyline. restore project see it and the mods in link below.
https://www.rvbloggers.wordpress.com
mhbell is offline   Reply With Quote
Join the #1 RV Forum Today - It's Totally Free!

iRV2.com RV Community - Are you about to start a new improvement on your RV or need some help with some maintenance? Do you need advice on what products to buy? Or maybe you can give others some advice? No matter where you fit in you'll find that iRV2 is a great community to join. Best of all it's totally FREE!

You are currently viewing our boards as a guest so you have limited access to our community. Please take the time to register and you will gain a lot of great new features including; the ability to participate in discussions, network with other RV owners, see fewer ads, upload photographs, create an RV blog, send private messages and so much, much more!

Old 12-11-2016, 09:11 AM   #16
Registered User
 
Join Date: Nov 2016
Posts: 520
Quote:
Originally Posted by marjoa View Post
I just want to make sure I'm not putting any unnecessary stress on my MH's drive train so I want to just run this by you guys to see if these driving habits are ok.

1) So say driving on the freeway and then exiting on a ramp I would anticipate I need to be slowing down soon so I let off the gas 1st, coast a bit and then hit the tow mode button as I apply a little braking and the engine will down shift, 4, 3, 2, 1 assisting me to a total stop so I'm not using all brakes.

2) Driving in town to the storage garage, or going through a small town or whatever. You're in typical town traffic running in "Drive" 25, 35, 40 MPH and then you see a light turn red ahead. Again, let off gas, coast a bit, hit tow mode and let the engine/tranny downshifting do most of the work to slow you down. Once at a complete stop, hit the tow mode to off position, and then start moving again in "Drive".

Question:
Is using the Tow mode to assist in braking in these type of situations as a daily driving practice "a good practice"? Does it pose any hard labor or unfriendly functions of the engine/tranny?
marjoa
I have always used my Pacbrake much the same as you use your Tow mode, (and have for over 150,000 miles).

The original disc brake pads on my 1996 Safari Sahara lasted 19 years, (144,500 miles).....with NO "hard labor" or "unfriendly functions" of either the Cat diesel engine or the Allison transmission.
Woodchopper is offline   Reply With Quote
Old 12-11-2016, 09:38 AM   #17
Senior Member
 
computerguy's Avatar
 
Join Date: Jul 2010
Location: FT on the Road
Posts: 2,808
Seems to me like to OP is using his gasser the correct way. You aren't harming the trans by using it as designed and saving wear and tear on your brakes.

As a side note, you will receive more relevant answers from the Ford Chassis forum:

iRV2 Ford Motorhome Chassis Forum
__________________
I don't make it much on here anymore so will not see your reply to my comment. Drop me a direct message and when I come back on I will see it.
Cheers!
computerguy is offline   Reply With Quote
Old 12-11-2016, 10:25 AM   #18
Senior Member
 
Dave-Oh's Avatar
 
Join Date: May 2015
Location: Silver Spring, MD
Posts: 602
I use tow-haul mode in traffic as well...especially when towing the car. The extra control when stopping is helpful and the transmission is certainly designed for this. Additionally, hot brakes can fade and I think that using T/H mode certainly can reduce the wear on the brakes so you'll have them when you need them. A good following distance, moderate acceleration and anticipating stopping and slowing certainly helps both the brakes and tranny do their jobs.

Finally, most of us would not be considered high mileage users of our rigs, so transmission wear would really be difficult to accrue at such a level that using tow/haul would be a factor in causing components to fail from high usage.

Enjoy your rig!
__________________
2020 Winnebago View 24D
2018 Jeep (JL) Wrangler
Dave-Oh is offline   Reply With Quote
Old 12-11-2016, 02:05 PM   #19
Senior Member
 
Join Date: Aug 2016
Posts: 3,401
Quote:
Originally Posted by computerguy View Post
Seems to me like to OP is using his gasser the correct way. You aren't harming the trans by using it as designed and saving wear and tear on your brakes.

As a side note, you will receive more relevant answers from the Ford Chassis forum:

iRV2 Ford Motorhome Chassis Forum
Yep a gasser and thanks for the feed back everyone. Also that attachment from mhbell very helpful too.

Yes computerguy that's exactly what I was trying to do is save wear and tear on the brakes but just wanted to make sure I wasn't compromising the tranny/drive train components.

Well good, I'm going to continue this braking assist procedure to slow down and keep from using all brakes.

My wife & I really enjoy coming here reading & everyone's posts. We really hope we can meet some of you on the road.

I love learning and making my brain "Great Again".
marjoa is offline   Reply With Quote
Old 12-11-2016, 03:44 PM   #20
Senior Member
 
harleyjt's Avatar


 
Newmar Owners Club
Workhorse Chassis Owner
Join Date: Jan 2015
Location: Byhalia, MS
Posts: 3,142
The Tow/Haul function is a whole different thing in the Dodge than in the Ford.
jt
__________________
2005 Newmar Kountry Star Gas 3742, Workhorse W24, 8.1L/Allison 5-spd
2017 Grand Cherokee or 2017 Harley Ultra in tow
JT, Em & the boys, Kong & Baxter (rescued grey tabbies)
harleyjt is offline   Reply With Quote
Old 12-11-2016, 03:59 PM   #21
rkf
Member
 
rkf's Avatar
 
Join Date: Jul 2016
Posts: 74
Use as designed, that's what's it for. Never had a problem with the Allison trannies 300,000 miles plus. Don't know about dodge or ford. Brakes are cheap but you can overheat them and cause brake fade and not have them.
rkf is offline   Reply With Quote
Old 12-12-2016, 06:40 AM   #22
Senior Member
 
Ford Super Duty Owner
Join Date: Sep 2016
Posts: 189
Quote:
Originally Posted by twinboat View Post

If you read your owners manual, you will see that it is OK to use it whenever it seems to help control.

There is no "Coast Clutch". The Mode simply reprograms the shift points, to a little sooner or latter, that funtion all of the time while driving, in the transmission.
Twin boat,
In the torqueshift "5"speed trans it has a Coast clutch which supplies engine braking for deceleration. In the torqueshift "6" there is not a Coast clutch rather this trans uses the low one way for engine braking with exceptions of first and reverse gear. Use of tow haul will not damage any components as you stated. Let me clarify my poorly written post. I would just turn on tow/haul after every start to achieve the desired braking addition original poster is desiring. The constant on/off will create issues in the switch and adds to more driver distraction so why not just turn it on and leave it on startup?
Davidjeff is offline   Reply With Quote
Old 12-12-2016, 07:15 AM   #23
Senior Member
 
wildtoad's Avatar
 
Join Date: Jul 2010
Posts: 4,613
Just keep it simple. Start engine, press Tow/Haul, toad or no toad.
__________________
Tom Wilds

2016 Newmar Bay Star Sport 3004
2015 Jeep Wrangler 2DR 4WD Sahara, Automatic, Hard Top
wildtoad is offline   Reply With Quote
Old 12-12-2016, 09:15 AM   #24
Senior Member/RVM #90
 
MSHappyCampers's Avatar


 
Monaco Owners Club
Join Date: Nov 2002
Location: Columbus, MS
Posts: 45,858
My PacBrake exhaust brake stays on all the time. It does not activate until I depress the brake pedal.

If I'm on a freeway and NOT in heavy traffic, I start giving a turn signal and take my foot off the throttle when approaching the exit. Depending on the length of the exit ramp I either let it coast or depress the brake pedal momentarily to engage the exhaust brake and apply the brakes as needed with the exhaust brake doing most of the work.

In city traffic, I maintain a LOT of space between me and the vehicle ahead and try to let the exhaust brake do most of the slowing down.
__________________
Joe & Annette
Sometimes I sits and thinks, sometimes I just sits.....
2002 Monaco Windsor 40PBT, 2013 Honda CRV AWD
MSHappyCampers is offline   Reply With Quote
Old 12-13-2016, 08:22 AM   #25
Senior Member
 
wa8yxm's Avatar
 
Damon Owners Club
Workhorse Chassis Owner
Join Date: Mar 2009
Posts: 24,023
I'm not familure with Tow/Haul mode on the allison but I am Grade Brake.

It activates when needed and deactivates when not needed.. So for Grade Brake

Normal driving: Transmission ignores the switch
Braking: Transmission will "DOWNSHIFT" if engine speed allows to assist in braking. It will upshift if engine speed becomes too high.
Accelerating: Grade brake functions disengage soon as you touch the accelerator and transmission operates normally.

NO NEED to touch the switch.


OVERDRIVE: if transmission is shifting frequently in and out of overdrive turn it off, If transmission finds a gear it likes and stays there. Leave it on.
__________________
Home is where I park it!
wa8yxm is offline   Reply With Quote
Old 12-13-2016, 09:01 AM   #26
Registered User
 
Freightliner Owners Club
American Coach Owners Club
Join Date: Sep 2015
Location: Dallas, Ga.
Posts: 618
I always used tow/haul in our gasser.
Cranemec is offline   Reply With Quote
Reply



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Generator slowing down then all good demon1018 RV Systems & Appliances 1 06-03-2016 07:12 PM
Stab braking is an improper term for slowing descent on hills Ray,IN Class A Motorhome Discussions 40 04-12-2015 01:38 PM
Hot air from vents when slowing down INSPECTORBOB Ford Motorhome Chassis Forum 9 12-04-2010 07:09 PM
Old Habits Die Hard GaryKD iRV2.com General Discussion 15 05-16-2010 09:20 PM


All times are GMT -6. The time now is 05:15 AM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2021, vBulletin Solutions, Inc.