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Replacement radiator

mototrev Jan 30, 2011

  1. Harriminator

    Harriminator Senior Member

    659
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    How to disassemble a GPZ900R-fan in 15min....

    At first this baffle plate on top of the fan(non-ZL):

    fan_1.jpg

    Next the fanwheel:
    fan_2.jpg

    Now the three Phillips-head screws to get the electric motor off the frame:
    fan_3.jpg

    On the front side you can remove lock washer+washer below:
    fan_4.jpg
    fan_4a.jpg

    This looks like a spot welding but it is only a pushed in pin (2x) for the right fitting position of the ventilation hole at the downer side of the housing:
    fan_5.jpg
    fan_6.jpg

    You can lever&lift up the front case by 3 screw drivers, the housing is held together only by the force of the magnet inside:
    fan_7.jpg

    After removing front case part you see the rotor with coil:
    fan_8.jpg

    Rotor can be pulled out easy:
    fan_9.jpg

    It's a sleeve bearing to be controlled for damage or missing lubrication (mine was jarring while turning the wheel):
    fan_10.jpg

    A good occasion to check the grinding coal & spring for function:
    fan_11.jpg
    fan_12.jpg

    Now clean all parts, add some HT-grease and check for too much axial clearance to be equalized by adding or changing washers. The sleeve bearing has emergency running features by material so normally some new grease after 30+ years of operation time will fix it for next 30+ years...:laughing7:
     
    markus56 and R. J. like this.

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