4KSQ:Basic Service Questions

[MENGEBR.SVC@pc.Trimble.COM (Mark Engebretson)]

A few months ago I purchased a '85 4KSQ.  I am heading out on a winter 
trip for the holidays and have a few basic questions on routine services.

1.  Does anyone have a procedure for changing the air filter?  I am 
fairly mechanically adept but an always cautious around fuel injection 
systems, especially when they work.  What exactly needs to be 
disconnected in order to get into the airbox?

2.  What size hex driver is needed to open the fill hole on the 
transmission (manual) and rear differential?  Is this a standard size or 
a special Audi tool?

3. There seems to be an oil leak coming from the right side of the motor. 
 However, it only leaks just after the motor has been shut off.  Due to 
the positioning of the motor, it is very difficult to see the right side, 
but the leak is definitely above the oil filter.  I am betting that it is 
simply the valve cover gasket which I will replace this weekend.  Is 
there anything mounted on the right side that is particularly suspect to 
this sort of leak?

Thanks to all who respond,

____________________________________________
Mark A. Engebretson                  
Trimble Navigation Ltd.
Technical Assist Center (TAC)
Mark_Engebretson@trimble.com
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