Lightweight Cooling Fan

Lightweight Cooling Fan

SKU: AAT-LWC-DHS

This is the all new patent pending cooling fan for all VW Type 1 Doghouse cooling systems.  It is 74% lighter than a welded OEM fan, provides 7-8% more air flow, and is a single piece that will not fly apart!

 

The Doghouse fan shroud was introduced in 1971, and this fan DOES NOT fit earlier fan shrouds.

 

I have tested the fan to 8,000 RPM engine speed, which equates to 12,800 fan RPM, without issue.  Get better cooling, better engine response, and never worry about your fan flying apart and destroying your cooling system ever again (probably won't experience fan belt flying off at high rpm either).

  • Installation Notes

        • First, you remove the original fan mounting hub and any spacer shims installed, being careful not to lose the woodruff key.
        • Second, you install the new mounting hub, by sliding it over the generator/alternator shaft while lining up the slot for the woodruff key.
            ◦ Sometimes the woodruff key may come lose while sliding on the new hub, so watch it closely to see if it is coming out of its groove.
                ▪ If it is coming out of it’s groove, many times using a punch and a hammer to lightly tap it back in place will work without having to start over.
        • Third, install the fan by pressing it on to the steel hub on the generator/alternator.
            ◦ You will need to line it up according to the curved and flat surfaces to make sure it is straight.
            ◦ It is a slight interference fit, and you will probably here it pop into place, so don’t be too concerned if it takes a little pressure to get it on the hub.
        • Put the provided washer on, along with the provided nut.
        • IMPORTANT:  Torque the nut to 30-32 ft. lbs. using a 18 mm socket and using Loctite 271.
            ◦ Don’t try to hold the fan by the blades when you torque the nut in place.
            ◦ Instead use, the fan belt pulley slots by inserting a screw driver or other tool that will fit, to keep the fan from rotating while tightening the nut to the 30-32 ft. lbs.
        • Check that the fan does not rub on the backing plate.
            ◦ In many cases I have seen backing plates that were bent or warped, so double check you don’t have a bent or warped backing plate.
                ▪ If there is rubbing, there is an optional spacer that can be used underneath the steel mounting hub to get additional clearance (most installations shouldn’t require it).
                    • If you do require the spacer, then you take everything off and start at the beginning with the spacer going on first.

$99.00Price