proper vacuum psi to the 4WD actuator? - Great Lakes 4x4. The largest offroad forum in the Midwest

Go Back   Great Lakes 4x4. The largest offroad forum in the Midwest > 4x4 Talk > Dodge Tech
GL4x4 Live! GL4x4 Casino

greatlakes4x4.com is the premier Great Lakes 4x4 Forum on the internet. Registered Users do not see the above ads.
Search
Reply
 
Thread Tools Search this Thread
Old November 15th, 2013, 01:57 PM   #1
creeping death
I'm that guy.
 
creeping death's Avatar
 
Join Date: 05-11-08
Location: MUSKEGON, MI. 49442
Posts: 7,983
iTrader: (83)
Mentioned: 15 Post(s)
Question proper vacuum psi to the 4WD actuator?

anybody know what the proper vacuum psi to the 4WD actuator should be?

i checked both sides at the plug for the actuator and also upstream on both lines going to it close to the transfer case where the hoses plug into the steel lines on the cross member and i'm getting 15 psi @ idle at all four places i checked.

does this sound about right?
__________________
You ain't got no problem, Jules. I'm on the motherfucker.
creeping death is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old November 15th, 2013, 02:23 PM   #2
chadcooper55
expert jeep disassembler
 
chadcooper55's Avatar
 
Join Date: 08-28-08
Location: kent city mi
Posts: 8,033
iTrader: (20)
Mentioned: 10 Post(s)
Default

15 psi of pressure or vacuum? 15 psi of vacuum is not possible.
chadcooper55 is offline   Reply With Quote
Old November 15th, 2013, 02:42 PM   #3
in2deep
Hole tester
 
Join Date: 05-06-10
Location: muskegon,mi
Posts: 1,273
iTrader: (3)
Mentioned: 0 Post(s)
Default

no u need vacuum to engage the front 10+ inches of mercury for it to work. are you sure the collar is not fucked up of stuck
in2deep is offline   Reply With Quote
Old November 15th, 2013, 03:24 PM   #4
creeping death
I'm that guy.
 
creeping death's Avatar
 
Join Date: 05-11-08
Location: MUSKEGON, MI. 49442
Posts: 7,983
iTrader: (83)
Mentioned: 15 Post(s)
Default

it reads 15 inch vacuum.

using my vacuum gauge to troubleshoot and was just curious what is normal. there was a hole in the housing of the actuator causing it not to engage into 4WD
__________________
You ain't got no problem, Jules. I'm on the motherfucker.

Last edited by creeping death; November 15th, 2013 at 04:18 PM.
creeping death is offline   Reply With Quote
Old March 22nd, 2014, 01:10 PM   #5
TheDodgeGuy
PR MTU 4X4
 
TheDodgeGuy's Avatar
 
Join Date: 07-28-13
Location: Twin Lake MI
Posts: 27
iTrader: (1)
Mentioned: 0 Post(s)
Default

The shift fork slide can get gummed up and not allow the fork to slide, there isn't much vacuum that goes down to the actuator. Thats why the stock setup isnt very good. I went with the posi-lok setup and havent looked back, but if you are getting vacuum at the axle then that shouldnt be your issue. Pull the housing, clean it, check for wear on the splines and collar, slide the fork by hand after you clean it to make sure its sliding smoothly. Also, what kind of hole in the housing? As in something hit it and put a hole in it? There should be a breather hose that comes off of it, then the tubes for the vacuum lines, should be the only holes.
TheDodgeGuy is offline   Reply With Quote
Reply
Great Lakes 4x4. The largest offroad forum in the Midwest > 4x4 Talk > Dodge Tech

Thread Tools Search this Thread
Search this Thread:

Advanced Search

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

Forum Jump


All times are GMT -5. The time now is 07:16 AM.


Powered by: vBulletin, Copyright 2000 - 2012, Jelsoft Enterprises Ltd.
User Alert System provided by Advanced User Tagging (Lite) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd. Runs best on HiVelocity Hosting.
Page generated in 0.09321 seconds with 36 queries