Forums
New posts
Search forums
What's new
New posts
New profile posts
Latest activity
Members
Registered members
Current visitors
New profile posts
Search profile posts
Log in
Register
What's new
Search
Search
Search titles only
By:
New posts
Search forums
Menu
Log in
Register
Install the app
Install
RAM TRX - TRX-Forum.com
Bronco Raptor - BroncoRaptorForum.com
Forums
GEN 1 (2010-2014) Ford SVT Raptor Forums
Ford SVT Raptor General Discussions [GEN 1]
Gen 1 with 4 Auto (TOD)
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Reply to thread
Message
<blockquote data-quote="trick76cj5" data-source="post: 2000701" data-attributes="member: 67100"><p>Ok, update now that I have dug into this a little further. It is unusual that I jump into a project without having all the details. Additionally, I will start a whole new post once I have all the details of the installation and what is and isn't possible.</p><p></p><p>But, i want to clear up some of the wrong information I gave a few posts earlier.</p><p></p><p>1) The wire that goes into the back of the T-case is not a speed sensor, its actually an electronic clutch solenoid. I did not know this, but all these t-cases have a lock up clutch that operates like a synchro in a manual trans that brings the driveline up to speed before the shift motor engages the 4wd fork into the 4wd location. Additionally, this is the solenoid that is used to vary the 4Auto function, but in the 4auto t-cases, it is acting upon a full clutch pack, not just a single metal/metal friction plate.</p><p></p><p>2) The 4 auto function is smarter than I originally understood, but it is controlled by the TCC Module, not the transfer case itself. That 4auto TCCM controls the Pulse Width (effectively the voltage) to the solenoid generating different pressure on the clutches. The TCCM controls the pressure based on measured slip front/rear, steering input, ABS state, and probably a few other inputs. Sorry [USER=48700]@Justbob[/USER] for oversimplifying this in my earlier response, but this is all happening within the TCCM which we have to swap for 4auto so we don't have to worry about it technically.</p><p></p><p>3) The 4 auto with High lock on the 2018 and newer raptors uses the same clutch for 4auto function, but also uses the shift fork and mechanical engagement that is found in the standard 4wd t-cases. Unfortunately, per AllData, the 2014 TCCM does not move the shift motor in either 4A or 4Hi positions. So, this is where I think i've run into my first major hurdle.</p><p></p><p>So at this point, it appears it will all work, once my drive shaft arrives, but I will not have the lock feature i was planning.</p><p></p><p>I have ordered a TCCM out of a 2018 in hopes it will play well with the rest of the systems on the older truck and give me the lock feature i wanted.</p><p></p><p>This is not a how to, or a recommendation. Once i get this part in (late Feb. ETA) i will try it out and then report back. I will also make a stand alone post with all the technical specifications for the different transfer cases since this information appears impossible to find anywhere on the web currently.</p></blockquote><p></p>
[QUOTE="trick76cj5, post: 2000701, member: 67100"] Ok, update now that I have dug into this a little further. It is unusual that I jump into a project without having all the details. Additionally, I will start a whole new post once I have all the details of the installation and what is and isn't possible. But, i want to clear up some of the wrong information I gave a few posts earlier. 1) The wire that goes into the back of the T-case is not a speed sensor, its actually an electronic clutch solenoid. I did not know this, but all these t-cases have a lock up clutch that operates like a synchro in a manual trans that brings the driveline up to speed before the shift motor engages the 4wd fork into the 4wd location. Additionally, this is the solenoid that is used to vary the 4Auto function, but in the 4auto t-cases, it is acting upon a full clutch pack, not just a single metal/metal friction plate. 2) The 4 auto function is smarter than I originally understood, but it is controlled by the TCC Module, not the transfer case itself. That 4auto TCCM controls the Pulse Width (effectively the voltage) to the solenoid generating different pressure on the clutches. The TCCM controls the pressure based on measured slip front/rear, steering input, ABS state, and probably a few other inputs. Sorry [USER=48700]@Justbob[/USER] for oversimplifying this in my earlier response, but this is all happening within the TCCM which we have to swap for 4auto so we don't have to worry about it technically. 3) The 4 auto with High lock on the 2018 and newer raptors uses the same clutch for 4auto function, but also uses the shift fork and mechanical engagement that is found in the standard 4wd t-cases. Unfortunately, per AllData, the 2014 TCCM does not move the shift motor in either 4A or 4Hi positions. So, this is where I think i've run into my first major hurdle. So at this point, it appears it will all work, once my drive shaft arrives, but I will not have the lock feature i was planning. I have ordered a TCCM out of a 2018 in hopes it will play well with the rest of the systems on the older truck and give me the lock feature i wanted. This is not a how to, or a recommendation. Once i get this part in (late Feb. ETA) i will try it out and then report back. I will also make a stand alone post with all the technical specifications for the different transfer cases since this information appears impossible to find anywhere on the web currently. [/QUOTE]
Insert quotes…
Verification
Post reply
Staff online
Big Blue
Administrator
Members online
BeepsRaptor
DFS
Hal993
raptorsub
ivanhouston10
yoopercharged
970rap
GordoJay
Krudenite
KMarshall92
dsiggi
dirtslinger
leonardopessoa
bakwaas4eva
ograptor
smurfslayer
sf2360
JeffroMc
GCATX
dj30417
GLT
poser999
MaSoNNN
Swacer_2
taquitos
Irregular F150
swirly
Dev
pgpgarcia96
77Raptor
rgz
OEMPlus Raptor
RAPTORSCHIM
Big Blue
Dudebrodude
Turning Blue
downforce137
Wartman
MurderedOutSVT
MFouts
HighwaySentinel
Helopilot
cabzbaz
tm965
rider619
cfmistry
SeasickLI
socal raptor
lawyerup
Gtracer87
... and 35 more.
Forum statistics
Threads
93,684
Posts
1,966,812
Members
56,992
Latest member
carpediem425
Forums
GEN 1 (2010-2014) Ford SVT Raptor Forums
Ford SVT Raptor General Discussions [GEN 1]
Gen 1 with 4 Auto (TOD)
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.
Accept
Learn more…
Top