Squatting Dog
FRF Addict
You have two sources of contamination with this system.. On the vent side you have environmental contamination (water/mud/dust) which in turn eats up the flimsy diaphragm.. Then you have the "sealed" vacuum side which there is grease, metal from locking collar, and moisture that seeps in from the hub side. All this junk finds it way up to the IWE solenoid and eventually causes it to fail..
The whole vacuum system works great on paper, and for street queens. But real world users will tell you they are junk.
Shifting in and out of 4wd while stopped is the best thing for these units. Also just because your stopped doesn't mean that they are fully engaged. There could be misalignment on one side, or cold weather will cause them to release slowly. So engage them when stopped and wait a few seconds, then slowly roll forward.. This will prevent the locking collar from slamming into hub gear..
The other thing when you park over night, make sure you just don't jump in and take off.. The reason why the vacuum that holds the IWE in 2wd may have bled off and the hubs might be locked without you knowing.. So you take off full throttle to create a strong vacuum and the front is locked in. The vacuum will pull the IWE locking collar off the hub gear grinding (milling) the outside edge of IWE locking collar. And you have never even put it in 4wd.. I have seen this several times, guys try to use 4wd for the first time when they actually need it, and bam the teeth get ripped off, because of the IWE vacuum let down wearing the locking collar..
-Greg (aka squatting dog)
The whole vacuum system works great on paper, and for street queens. But real world users will tell you they are junk.
Shifting in and out of 4wd while stopped is the best thing for these units. Also just because your stopped doesn't mean that they are fully engaged. There could be misalignment on one side, or cold weather will cause them to release slowly. So engage them when stopped and wait a few seconds, then slowly roll forward.. This will prevent the locking collar from slamming into hub gear..
The other thing when you park over night, make sure you just don't jump in and take off.. The reason why the vacuum that holds the IWE in 2wd may have bled off and the hubs might be locked without you knowing.. So you take off full throttle to create a strong vacuum and the front is locked in. The vacuum will pull the IWE locking collar off the hub gear grinding (milling) the outside edge of IWE locking collar. And you have never even put it in 4wd.. I have seen this several times, guys try to use 4wd for the first time when they actually need it, and bam the teeth get ripped off, because of the IWE vacuum let down wearing the locking collar..
-Greg (aka squatting dog)