VW T2 Camper 34 PICT/3 Carb Assembly
A video showing the steps of assembling a 34 PICT/3 Carb from my T2 camper
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VW T2 Late Bay 34 PICT/3 Carb removal
A short video showing the steps involved in removing a 34 PICT/3 Carb from a VW T2 Camper
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Initial setup of the 34 PICT/3 Carb
This guide has been taken from Rob and Dave's Aircooled Volkswagon Pages http://www.vw-resource.com/34pict3.html
Note: Fast Idle Adjuster is a misnomer - this screw it is NOT used to adjust the idle speed. The Fast Idle Adjuster works with the choke to give a smooth idle on a cold engine. As the choke warms (in concert with the warming engine, hopefully) the butterfly valve in the throat of the carburetor opens and the Fast Idle Adjuster screw moves down the steps of the choke fast idle cam, reducing the engine idle speed. Screwing the Fast Idle Adjuster screw in more will increase the idle speed, but doing so messes up the Volume Control and Bypass Screw adjustments. This destroys the idle geometry, and the car won't run right.
Note: The Volume Control Screw is the smaller of the two adjusting screws, located on the left side of the carburetor just above the Idle Cutoff solenoid (which has a black wire from the positive side of the coil attached to it). The Volume Control Screw is NOT used to set the idle speed - that's the job of the Bypass Screw.
Note: Before setting the Volume Control Screw per the step below, turn the Bypass Screw (the larger one) out a couple of turns, just to get things started.
Note: Though you want to be careful to not screw the Volume Control Screw in too far, you also want to make sure that it is initially firmly seated before unscrewing it as specified. If you don't start with the Volume Control Screw firmly seated, you may have trouble adjusting the idle with the Bypass Screw, to the point where you may have it turned all the way in and still have the idle too high. This condition will cause stumbling on acceleration if not corrected.
Note: Again, the idle speed is NOT set with the Fast Idle Adjuster on the top of the throttle arm as it is on the older 28 and 30 series carburetors - though its name (Fast Idle Adjuster) would lead you to think that its used to set the idle.