How does a Jeep Wrangler YJ shift into 4WD?
YJ’s are different from their CJ predecessor, as well as the new ’97-’02 TJ Wranglers and 91 and up XJ’s, by having a two-piece axle shaft on the passenger side. Shifting into 4wd is done through the console shifter sending an impulse to the front motor via the vacuum lines.
What’s the difference between a YJ and a CJ Wrangler?
Sometimes you can flex too much and pull the vacuum lines off of the motor itself. YJ’s are different from their CJ predecessor, as well as the new ’97-’02 TJ Wranglers and 91 and up XJ’s, by having a two-piece axle shaft on the passenger side.
What’s the difference between YJ and Dana 30 axles?
The Dana 30 gear ratios are either 3.21 or 3.73. The width of the axle shafts is 1.13 inches. The YJ Dana 30 hold a reverse cut ring and pinion, but the TJs do not. Both TJs and YJs, however, use a 5×4.5 inch bolt pattern.
Do you need a Posi Lok for a Jeep YJ?
An installation of a Posi-Lok to cure an ailing 4wd shifting problem in may YJ’s and XJ’s. For ’87-’95 Wrangler YJ and ’84-’91 Cherokee XJ owners one consistent problem that occurs is the often failing vacuum motor, which engages 4wd. The vacuum motor falls subject to failure for one of many reasons.
YJ’s are different from their CJ predecessor, as well as the new ’97-’02 TJ Wranglers and 91 and up XJ’s, by having a two-piece axle shaft on the passenger side. Shifting into 4wd is done through the console shifter sending an impulse to the front motor via the vacuum lines.
How does a 4×4 Posi-Lok work on a Jeep YJ?
4×4 Posi-Lok replaces the vacuum actuator with a cable operated actuator that puts the driver in control of the engagement from inside the cab. After engaging the transfer case, a one inch pull of the 4×4 Posi-Lok cable connects the right front axle to the intermediate shaft using the shift collar and fork, and 4-wheel drive is engaged!
Where does engine vacum go in Jeep Wrangler YJ?
When the shift occurs, engine vacum is placed on lines running from the transfer case to the axle. This manually controlled shifter ensures instant 4WD engagement and works great with lockers.
Sometimes you can flex too much and pull the vacuum lines off of the motor itself. YJ’s are different from their CJ predecessor, as well as the new ’97-’02 TJ Wranglers and 91 and up XJ’s, by having a two-piece axle shaft on the passenger side.