front diff actuator

Was traveling over the mountain pass and lost my 4x4, Toyota shop checked it out, said the front differential actuator was bad as well as a detection switch. When they disconnected the actuator the 4wd worked so its not mechanical but electrical. They want $950 to fix it, If I find a used one is it difficult to do myself ? I'm pretty mechanical, its a 2001-6cyl. Thanks

 

Removal: See #5 Installation: Bottom of page, Note the special sealant used!

 

you should be able to do that yourself for alot cheaper then $950. get a haynes manual, or download the factory manual here for step by step diy.