Mike "Wuzzy121". Rest in peace, brother

Go Back   Tacoma World Forums > Tacoma Discussion > 2nd Gen. Tacomas

Notices

front diff locking in h4

Reply
 
Thread Tools Search this Thread
Old 03-02-2013, 05:23 AM   #1
sierra015 [OP] sierra015 is offline
Junior Member
sierra015 is on a distinguished road
Name: Filip
Joined: Mar 2013, #98784
Location: Toronto
Gender: Male
Posts: 8
sierra015's Tacoma Gallery
front diff locking in h4

2005 tacoma when i put it in h4 it locks the front diff but the back is not???wtf
  Reply With Quote
Old 03-02-2013, 05:58 AM   #2
Senior Member
BulletToothTony is one of the sharper tools in the shedBulletToothTony is one of the sharper tools in the shedBulletToothTony is one of the sharper tools in the shedBulletToothTony is one of the sharper tools in the shedBulletToothTony is one of the sharper tools in the shedBulletToothTony is one of the sharper tools in the shedBulletToothTony is one of the sharper tools in the shedBulletToothTony is one of the sharper tools in the shedBulletToothTony is one of the sharper tools in the shedBulletToothTony is one of the sharper tools in the shedBulletToothTony is one of the sharper tools in the shed
Name: You can call me Susan if it makes you happy.
Joined: Feb 2008, #4833
Gender: Trans
Posts: 10,232
BulletToothTony's Tacoma Gallery
Is this a stock Tacoma? If so you don't have a front locker...
  Reply With Quote
Old 03-02-2013, 08:47 AM   #4
Senior Member
MGM Tacoma is on a distinguished road
 
MGM Tacoma's Avatar
Name: Ryan
Joined: Dec 2012, #92685
Location: Dunn NC
Gender: Male
Posts: 203
MGM Tacoma's Tacoma Gallery
more info needed to really answer your questions
  Reply With Quote
Old 03-03-2013, 06:00 AM   #5
sierra015 [OP] sierra015 is offline
Junior Member
sierra015 is on a distinguished road
Name: Filip
Joined: Mar 2013, #98784
Location: Toronto
Gender: Male
Posts: 8
sierra015's Tacoma Gallery
Quote:
Originally Posted by MGM Tacoma View Post
more info needed to really answer your questions
in h4 it locks the front diff and the back is not locked
when on snow 2front are spinning and one of the rear which ever one has less grip. when i make a U-turn in h4 the front wheels shake
  Reply With Quote
Old 03-03-2013, 06:03 AM   #6
Banned
SoCaltaco65 is one of the sharper tools in the shedSoCaltaco65 is one of the sharper tools in the shedSoCaltaco65 is one of the sharper tools in the shedSoCaltaco65 is one of the sharper tools in the shedSoCaltaco65 is one of the sharper tools in the shedSoCaltaco65 is one of the sharper tools in the shedSoCaltaco65 is one of the sharper tools in the shedSoCaltaco65 is one of the sharper tools in the shedSoCaltaco65 is one of the sharper tools in the shedSoCaltaco65 is one of the sharper tools in the shedSoCaltaco65 is one of the sharper tools in the shed
Joined: May 2011, #56389
Gender: Male
Posts: 6,992
SoCaltaco65's Tacoma Gallery
Quote:
Originally Posted by sierra015 View Post
in h4 it locks the front diff and the back is not locked
when on snow 2front are spinning and one of the rear which ever one has less grip. when i make a U-turn in h4 the front wheels shake


Don't make u turns on dry pavement in 4x4!
  Reply With Quote
Old 03-03-2013, 06:16 AM   #7
Old & Forgetful
Janster is one of the sharper tools in the shedJanster is one of the sharper tools in the shedJanster is one of the sharper tools in the shedJanster is one of the sharper tools in the shedJanster is one of the sharper tools in the shedJanster is one of the sharper tools in the shedJanster is one of the sharper tools in the shedJanster is one of the sharper tools in the shedJanster is one of the sharper tools in the shedJanster is one of the sharper tools in the shedJanster is one of the sharper tools in the shed
 
Janster's Avatar
Name: Jandy
Joined: Mar 2007, #1138
Location: Lancaster, PA
Age: 47
Gender: Female
Posts: 13,138
Janster's Tacoma Gallery
Quote:
Originally Posted by sierra015 View Post
in h4 it locks the front diff and the back is not locked
when on snow 2front are spinning and one of the rear which ever one has less grip. when i make a U-turn in h4 the front wheels shake
Do you have a TRD Offroad truck? Do you have lockers in the front & rear diff?

If NO....
OR
If you're not exactly sure what I mean by 'a locker' ....

Then I'm guessing you have OPEN differentials. Even when you are in 4WD - one of the wheels can and won't spin depending on the terrain. The POWER will go to the wheel with least resistance leaving the other wheel stopped completely. If one wheel is on the ground and the other wheel is off the ground (in the air), the wheel in the air will spin while the other wheel will not spin at all. That's how OPEN diffs work. On these trucks - They WILL NEVER be locked together unless you have a LOCKER in the differentials.

As for the shaking....DO NOT make tight turns while in 4WD. It will bind up the driveline and especially ruin your CV joints.
  Reply With Quote
Old 03-03-2013, 06:41 AM   #8
sierra015 [OP] sierra015 is offline
Junior Member
sierra015 is on a distinguished road
Name: Filip
Joined: Mar 2013, #98784
Location: Toronto
Gender: Male
Posts: 8
sierra015's Tacoma Gallery
Quote:
Originally Posted by Janster View Post
Do you have a TRD Offroad truck? Do you have lockers in the front & rear diff?

If NO....
OR
If you're not exactly sure what I mean by 'a locker' ....

Then I'm guessing you have OPEN differentials. Even when you are in 4WD - one of the wheels can and won't spin depending on the terrain. The POWER will go to the wheel with least resistance leaving the other wheel stopped completely. If one wheel is on the ground and the other wheel is off the ground (in the air), the wheel in the air will spin while the other wheel will not spin at all. That's how OPEN diffs work. On these trucks - They WILL NEVER be locked together unless you have a LOCKER in the differentials.

As for the shaking....DO NOT make tight turns while in 4WD. It will bind up the driveline and especially ruin your CV joints.
2005 TRD Sport it has h2-h4-hl so h4 is not like 4wd or is it
  Reply With Quote
Old 03-03-2013, 07:04 AM   #9
I'll be your huckleberry!
Millertime187 is one of the sharper tools in the shedMillertime187 is one of the sharper tools in the shedMillertime187 is one of the sharper tools in the shedMillertime187 is one of the sharper tools in the shedMillertime187 is one of the sharper tools in the shedMillertime187 is one of the sharper tools in the shedMillertime187 is one of the sharper tools in the shedMillertime187 is one of the sharper tools in the shedMillertime187 is one of the sharper tools in the shedMillertime187 is one of the sharper tools in the shedMillertime187 is one of the sharper tools in the shed
 
Millertime187's Avatar
Army: Iraq vet
Name: David
Joined: Sep 2012, #87698
Location: Clay City, KY
Age: 31
Gender: Male
Posts: 1,912
Millertime187's Tacoma Gallery
Quote:
Originally Posted by sierra015 View Post
2005 TRD Sport it has h2-h4-hl so h4 is not like 4wd or is it
H-4 is 4 wheel drive.
  Reply With Quote
Old 03-03-2013, 08:04 AM   #10
Junior Member
SierraMare is on a distinguished road
 
SierraMare's Avatar
Name: Ted
Joined: Dec 2007, #4005
Location: Wisconsin
Gender: Male
Posts: 22
SierraMare's Tacoma Gallery
Time to do your homework! Your owner's manual discusses how to operate your part time 4wd system. Here is one of several online links that discusses how it works. Take a drive with a friend who owns a 4wd truck for further training, or take a course. http://auto.howstuffworks.com/four-wheel-drive.htm
  Reply With Quote
Old 03-03-2013, 10:10 AM   #11
Senior Member
Sparky73 is one of the sharper tools in the shedSparky73 is one of the sharper tools in the shedSparky73 is one of the sharper tools in the shedSparky73 is one of the sharper tools in the shedSparky73 is one of the sharper tools in the shedSparky73 is one of the sharper tools in the shedSparky73 is one of the sharper tools in the shedSparky73 is one of the sharper tools in the shedSparky73 is one of the sharper tools in the shedSparky73 is one of the sharper tools in the shedSparky73 is one of the sharper tools in the shed
 
Sparky73's Avatar
Name: Drew
Joined: Dec 2012, #94004
Location: Hawaii
Gender: Male
Posts: 206
Sparky73's Tacoma Gallery
Quote:
Originally Posted by SierraMare View Post
Time to do your homework! Your owner's manual discusses how to operate your part time 4wd system. Here is one of several online links that discusses how it works. Take a drive with a friend who owns a 4wd truck for further training, or take a course. http://auto.howstuffworks.com/four-wheel-drive.htm
^ Yeah, this!

OP, you're mixing up "enaging" 4wd with having locking differentials, aka "Lockers." Your 2005 Sport does not have lockers on front or rear unless they were added.

By switching to H-4 (or L-4), all you are doing is engaging the front wheels via your transfer case. Both your front and rear differentials are "open" differentials, not "lockers." Simply put, an open differential transfers power to the wheel with the least resistance (least traction). If a front/rear tire is spinning, the other front/rear tire will not get any power and will not pull the truck.

The front and rear differentials operate independently of each other so it's possible that both front tires had traction (both were pulling) while a back tire had no traction (one spinning, one not moving). Basically, your truck is performing exactly as it's designed to.

Last point, never engage 4wd on dry pavement because it will damage your drivetrain. If you're in snow or offroad in 4wd, your front wheels will not shake during tight turns, etc.
  Reply With Quote
Old 03-03-2013, 10:22 AM   #12
The dog did it...I swear!
OffroadToy is one of the sharper tools in the shedOffroadToy is one of the sharper tools in the shedOffroadToy is one of the sharper tools in the shedOffroadToy is one of the sharper tools in the shedOffroadToy is one of the sharper tools in the shedOffroadToy is one of the sharper tools in the shedOffroadToy is one of the sharper tools in the shedOffroadToy is one of the sharper tools in the shedOffroadToy is one of the sharper tools in the shedOffroadToy is one of the sharper tools in the shedOffroadToy is one of the sharper tools in the shed
 
OffroadToy's Avatar
Joined: Sep 2009, #22680
Location: High Desert... land of junipers, sage brush, and lava rock
Gender: Male
Posts: 5,036
OffroadToy's Tacoma Gallery
Quote:
Originally Posted by sierra015 View Post
2005 TRD Sport it has h2-h4-hl so h4 is not like 4wd or is it
Only the Offroad model comes with a locking differencial. You have 2WD, 4H and 4L. It's a part-time 4WD system so never engage it on dry pavement. Read the links below for more information...
  Reply With Quote
Old 03-03-2013, 10:25 AM   #13
Senior Member
Blygy is one of the sharper tools in the shedBlygy is one of the sharper tools in the shedBlygy is one of the sharper tools in the shedBlygy is one of the sharper tools in the shedBlygy is one of the sharper tools in the shedBlygy is one of the sharper tools in the shedBlygy is one of the sharper tools in the shedBlygy is one of the sharper tools in the shedBlygy is one of the sharper tools in the shedBlygy is one of the sharper tools in the shedBlygy is one of the sharper tools in the shed
 
Blygy's Avatar
Joined: Jun 2012, #80231
Location: East of Edson
Age: 41
Gender: Male
Posts: 324
Blygy's Tacoma Gallery
What did you think H4 meant????
  Reply With Quote
Old 03-03-2013, 10:27 AM   #14
Carolina Alliance Southwest Region Ambassador
jandrews is one of the sharper tools in the shedjandrews is one of the sharper tools in the shedjandrews is one of the sharper tools in the shedjandrews is one of the sharper tools in the shedjandrews is one of the sharper tools in the shedjandrews is one of the sharper tools in the shedjandrews is one of the sharper tools in the shedjandrews is one of the sharper tools in the shedjandrews is one of the sharper tools in the shedjandrews is one of the sharper tools in the shedjandrews is one of the sharper tools in the shed
 
jandrews's Avatar
Joined: Jun 2009, #18122
Gender: Guy
Posts: 12,195
jandrews's Tacoma Gallery
I'm just here for the popcorn.

  Reply With Quote
Old 03-03-2013, 12:53 PM   #15
Old & Forgetful
Janster is one of the sharper tools in the shedJanster is one of the sharper tools in the shedJanster is one of the sharper tools in the shedJanster is one of the sharper tools in the shedJanster is one of the sharper tools in the shedJanster is one of the sharper tools in the shedJanster is one of the sharper tools in the shedJanster is one of the sharper tools in the shedJanster is one of the sharper tools in the shedJanster is one of the sharper tools in the shedJanster is one of the sharper tools in the shed
 
Janster's Avatar
Name: Jandy
Joined: Mar 2007, #1138
Location: Lancaster, PA
Age: 47
Gender: Female
Posts: 13,138
Janster's Tacoma Gallery
Quote:
Originally Posted by sierra015 View Post
2005 TRD Sport it has h2-h4-hl so h4 is not like 4wd or is it
H2 = 2WD
H4 = 4WD
4Lo = 4WD low range

You have the mechanical LSD (limited slip differential). It is better than an OPEN diff but not like a locker.

Depending on the terrain & situation...your mechanical LSD will still slip similar to an OPEN diff. Again.....the path of least resistance. Mechanical LSD is operated via clutch paks. Those clutch paks will only lock the wheels together under a certain torque limit. Once that torque limit is reached, it will allow the wheels to slip (similar to an OPEN diff).

Having a LOCKER in the differential - as seen in the TRD OFFROAD trucks.....when in 4lo range and when the locker is engaged, both wheels are locked together at all times regardless of terrain.
  Reply With Quote
Old 03-03-2013, 03:31 PM   #16
sierra015 [OP] sierra015 is offline
Junior Member
sierra015 is on a distinguished road
Name: Filip
Joined: Mar 2013, #98784
Location: Toronto
Gender: Male
Posts: 8
sierra015's Tacoma Gallery
ok i think i got it
h2=hwy,rd
h4-l4 only use it when needed in mud or snow or other wet stuff when stuck
thanx all!
  Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Similar Threads
Thread Thread Starter Forum Replies Last Post
Locking diff help Venom73 2nd Gen. Tacomas 9 01-23-2012 09:40 PM
Front diff locking options. e-locker, aussie-locker, lsd?) x2468 1st Gen. Tacomas 12 07-02-2011 01:18 PM
Limited Slip Diff - Locking Rear Diff tacomaprerunner Technical Chat 5 01-29-2010 07:09 PM
07 Tacoma D Cab H4 locking on Dry Pavement gabishara New Members 4 07-22-2009 01:54 PM
Locking Diff vs. Slip Diff. raycie Technical Chat 13 03-17-2008 02:37 PM


Copyright © 2014 Tacoma Forum. Tacoma World is not owned by, or affiliated with Toyota Motor Corporation.