Question about Epson Perfection 4990 Flatbed Scanner

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Epson 4990 belt and pulley

The unit got turned over and now the pulley in the upper housing is floating loose inside. Any diagram as to where it goes and how the belt routes would be greatly appreciated. Thanks

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  • Anonymous May 09, 2009

    The belt has dropped off the pulley in the lower scanner head.
    The upper scanner head has dropped completely out of its rail.


    is there any way of opening the bottom and the top elements?

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HAVE YOU TAKEN IT APART AND LOOKED AT THE CONFIGURATION OF THE LAYOUT, CAMARA PHONE OR A PHOTOGRAPH OF THE ASSEMBLIY WOULD BE NICE OR

EPSON PERFECTION 4990 FLATBED SCANNER SERVICE MANUAL AND DRIVERS

MAY HELP WITH ALIGNMENT WHEN YOU FIX THE MACHINE.

ROD

Posted on Feb 09, 2009

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How to replace blower belt on whirlpool cabrio dryer model wed7800xw0


first put pulley onto blower fan housing i think you have to counter clock turn to put the pulley by hand. put you one hand inside the blower housing and hold the fan then use pliers and tight the pulley. now put belt on motor pulley first then put belt on blower's pulley it is hart to put on so little belt on pulley and use other hand and turn fan from inside so blower's pulley turn and belt get to pulley. last tight the pulley again. turn fan by hand to make sure belt run ok. hope it will help you.

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The belt has come off the dryer and I can't figure out the configuration to put it back on, therefore the dryer wont turn


Some of the belts are counterintuitive to reinstall. although there are several different styles there are usually four - five components: Drum, belt, motor pulley and the spring pulley (sometimes there is a also a stationary pulley). Please double check but a lot of dryers have a diagram inside the dryer housing. If not, place the belt around the drum then the stationary pulley (if equipped) then the motor pulley and finally the spring pulley. Try to support the drum loosely if the spring pulley gives you a problem, on some models the motor mounts are adjustable, which you can use to reduce the strain. (You can always adjust it after the drum and pullies are secure) Hope this helps. Good Luck!
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1 Answer

Loose belt. how do you tighten it or repair it?


  • Open the hood to the Saturn SL and locate the serpentine belt routing diagram on the front engine frame rail. This diagram will show you where the tensioner pulley is in comparison to the others. You will need to refer to it to make sure the belt is aligned properly when it comes time to place the belt back on.
  • 2 Stand on the side of the right fender of the Saturn SL located in front of the belt and pulleys. Locate the tensioner pulley according to the belt routing diagram. Different applications of Saturn SLs (for example, with power steering and air conditioning or without power steering or air conditioning or any variety thereof) may place the automatic belt tensioner in slightly different locations. As you will note from the room between the engine and the interior fender well, you have an extremely limited amount of room to work. This is why the telescopic magnet will come in handy; you're going to drop a wrench and need to retrieve it from the bottom of the splash shield.
  • 3 Place the box end of the long-handled 14-mm wrench onto the center bolt of the automatic tensioner and turn it clockwise. This will relieve the tension on the belt. Take the belt off the upper-right hand pulley only (unless you're replacing the belt as well) toward the front of the car. Allow the tension to go back and remove the wrench.
  • 4 Slip the back of the serpentine belt off the tensioner. Locate the two bolts on the flange of the tensioner and remove them, using the ratchet and a deep socket. If you need more room to get to the bolts, you could remove the pulley wheel off the automatic belt tensioner by placing the 14-mm long-handled wrench back onto the center bolt of the pulley but turn counterclockwise and remove the bolt and pulley.
  • 5 Install the new belt tensionser, replace the bolts, threading them in by hand at first and then tightening with the ratchet and socket. This is going to be challenging due to the lack of room in the cavity you're working. Place the 14-mm wrench back onto the center bolt of the tensioner pulley and turn clockwise to release the tension and reapply the belt to the upper pulley and on top of the tensioner or replace the belt, according to the belt routing diagram.



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    There is a loose part rattling within my transparency hood which prevents it from working - how can I repair this ?


    I just had this problem too. What has probably happened is that the belt/wheel assembly within the upper lid has broken loose from its plastic housing. It is normally retained in place by two weak plastic posts, each having a plastic extrusion that holds the metal housing for the wheel in place. Just minor stress can apparently snap off the plastic extrusions. (Nice quality workmanship, Epson.)

    Unplug the upper lid and remove it. Unscrew the 5 retaining screws and then use a small flathead screwdriver to carefully pry the bottom of the unit away from the rest of the housing. Stabilize the wheel mechanism so that you can rotate the whole unit around in order to grab the broken plastic pieces and small spring without allowing the wheel mechanism to crash into things. Superglue the two broken plastic pieces to their proper mated location on the lid, and wait about half a day for a solid bond. Then fit the wheel housing over the two plastic pieces so that the thin silver bar is pointed toward the back of the lid. (Do NOT place the spring over the thin silver bar yet.) Fit the orange belt properly around the wheel. NOW, push the wheel housing carefully toward the front of the lid until there is slight tension in the belt. Squeeze one end of the spring over the thin silver bar and push the spring completely into its recessed plastic trough while compressing it. Reassemble, and you're done.

    Sep 01, 2010 | Epson Perfection 4990 Flatbed Scanner

    2 Answers

    Need diagram to put timingbelt on 2001 kia sportage


    prev.gif next.gif Timing Belt Removal & Installation SOHC To Remove:
    1. Disconnect battery negative cable.
    2. Remove fresh air duct.
    3. Drain engine coolant into an appropriate container and retighten radiator drain plug.
    4. Remove upper radiator hose.
    5. Remove fan clutch assembly bolts.
    6. Remove 5 cooling fan shroud bolts.
    7. Remove fan shroud and fan as an assembly.
    8. Loosen alternator mounting bolts and remove drive belt from pulley.
    9. Remove fan pulley.
    10. Remove 4 cooling fan assembly bolts.
    11. Remove cooling fan assembly.
    12. Remove 4 bolts and upper timing belt cover.
    13. Remove 2 lower bolts and lower timing belt cover.
    14. Loosen adjusting bolt and remove A/C belt.
    15. Remove alternator belt.
    16. Loosen power steering pump lock bolt and mounting bolt.
    17. Remove drive belt from crankshaft damper. Camshaft timing marks kia-03-20-7032.gif

    18. Turn crankshaft until timing mark on front housing and the arrow "2" on the camshaft pulley align.
    19. Remove 5 bolts and remove damper.
    20. Remove timing belt guide from timing belt pulley.
    21. Loosen tensioner lock bolt.
    22. Pry tensioner away from timing belt and tighten lock bolt to relieve tension on the timing belt. NOTE: Mark the direction of timing belt rotation on the belt if it is being reused.
    23. Remove timing belt.
    To Install:
    Timing belt pulley timing marks kia-03-20-7035.gif

    NOTE: Timing belt pulley timing mark and timing mark must be aligned.
    Camshaft timing marks kia-03-20-7032.gif

    NOTE: The arrow at "2" on camshaft pulley must be aligned with timing mark on front housing.
    Timing belt installation kia-03-20-7036.gif

    1. Install timing belt with minimal slack from timing belt pulley to water pump and from water pump to camshaft pulley.
    2. Loosen tensioner lock bolt until tension is applied to timing belt. CAUTION
      Do not turn crankshaft counterclockwise.
    3. Turn crankshaft pulley 2 full turns clockwise and ensure timing marks are properly aligned.
    4. Tighten tensioner lock bolt to 33 ft lb (45 Nm).
    5. Apply a force of 21 lb to timing belt midway between idler pulley and camshaft pulley.
      • Deflection should measure 0.43-0.51 inch (11-13 mm)
      NOTE: if timing belt deflection is incorrect remove timing belt and install NEW tensioner spring.
    6. Install timing belt guide.
    7. Install crankshaft damper pulley.
    8. Install 5 crankshaft damper pulley bolts. Tighten bolts to 132 in lb (15 Nm).
    9. Install power steering pump drive belt.
    10. Adjust power steering pump drive belt tension and tighten lock bolt and mounting bolt.
    11. Install alternator drive belt.
    12. Install A/C drive belt.
    13. Install lower timing belt cover and bolts. Tighten bolts to 84 in lb (10 Nm).
    14. Install upper timing belt cover and bolts. Tighten bolts to 84 in lb (10 Nm).
    15. Install cooling fan assembly and 4 bolts. Tighten bolts to 27 ft lb (37 Nm).
    16. Install fan pulley.
    17. Install fan clutch and shroud as an assembly. Tighten bolts to 74 in lb (8 Nm).
    18. Tighten 4 cooling fan nuts to 16 ft lb (22 Nm).
    19. Adjust alternator belt tension and tighten alternator mounting bolts.
    20. Install upper radiator hose.
    21. Install fresh air duct.
    22. Connect battery negative cable.
    23. Refill/bleed cooling system.
    DOHC To Remove:
    1. Disconnect battery negative cable.
    2. Remove fresh air duct.
    3. Remove 5 cooling fan shroud bolts and 4 thermo-modulated fan nuts.
    4. Remove 4 thermo-modulated fan shroud fasteners.
    5. Remove generator drive belt.
    6. Remove fan pulley (located above crankshaft pulley).
    7. Remove 4 bolts and splash shield (located under front of vehicle).
    8. Remove A/C drive belt and power steering drive belt. Timing Belt Removal kia-03-20-7097.gif

    9. Remove 5 bolts and upper timing belt cover.
    10. Remove 2 bolts and lower timing belt cover.
    11. Loosen tensioner lock bolt and pivot tensioner pulley outboard.
    12. Retighten tensioner lock bolt. NOTE: Mark timing belt for rotation if it is being reused.
    13. Remove timing belt.
    To Install:
    Crankshaft match marks 79245g25.gif

    1. Align marks on timing belt pulley and pump body. Camshaft pulley alignment marks 79245g28.gif

    2. Align marks on camshaft pulleys with alignment marks on seal plate.
    3. Install timing belt. NOTE: No looseness should exist on the tension side and at the camshaft pulleys.
    4. Loosen tensioner lock bolt.
    5. Turn crankshaft 2 revolutions in direction of rotation and check that timing marks are still in alignment.
    6. Tighten timing belt tension lock bolt to 27-38 ft lb (32-52 Nm).
    7. Apply a force of 22 lbs to timing belt between camshaft sprockets.
      • Belt deflection should measure 0.30-0.33 in (7.5-8.5 mm)
      NOTE: Replace tensioner spring if timing belt deflection is excessive.
      Timing Belt Installation kia-03-20-7097.gif

    8. Install lower timing belt cover.
    9. Install upper timing belt cover.
    10. Install power steering drive belt and adjust belt tension.
    11. Install fan pulley.
    12. Install generator drive belt and adjust belt tension.
    13. Install A/C drive belt and adjust belt tension.
    14. Install splash guard.
    15. Install fan and fan shroud.
    16. Install 4 fan bolts. Tighten to 24 ft lb (33 Nm).
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    18. Install fresh air duct.
    19. Connect hose to resonance chamber.
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    1 Answer

    How to clean the Epson Perfection 4990


    I joined a free users group on Yahoo and downloaded the rememdy.

    Jan 26, 2010 | Epson Perfection 4990 Flatbed Scanner

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    Maytag Dependable Care M# LAT9416AAE will not spin. The tub is hard to turn.


    It sounds as if the floating motor mount is no longer floating or the 2 springs inside of that floating / gliding mount are not working correctly. There are also 4 hard rubber clear washers that are part of the gliding mount. If any one of the 4 of those washers has broken the motor does not glide properly and will not tighten the belt properly for the spin cycle to work. Make sure the unit is unplugged reach underneath the left front corner and feel for a 2 V belt groved pulley. First push the pulley inward 45 deg from the corner and let it go.... If it is working properly it should automatically tension the belt. If is sticks in position the either the springs or washer have failed. This is not an expensive repair. IF you call for a repairman make sure he checks the condition of the tub drive belt. The motor has been placing undue wear on the drive belt due to it being loose.

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    My Epson Perfection 4990 indicator light is flashing red shortly after the scanner is turned on. The manual says that the light tube needs replacing. How do I do this or is it a professional repair?


    I had the same problem and first checked the instructions in the Epson manual on the red flashing problem, read the following pdfs: Indicator light or problems

    I saw the fluorescent lamp come on for a second before the indicator light started to flash red, so I knew that the lamp was ok and did not need to be replaced. Try this turn off the scanner and try unplugging the transparency lid from the back of the scanner, turn on the scanner and see if the light goes back to green. My issue turned out the be the mechanism inside the transparency lid, I kind of heard an awkward noise when I turned on the scanner, but thought it was coming from the base, I rlocked and unlocked the transportaion lock on both the base and lid, to see if that would fix it but it turned out it was coming from the lid, where there is also moving parts inside using a belt and wheels. On the end wheel closest to the front, the 2 little plastic pegs that hold down the square metal plate with wheel broke off, I could hear them inside when I lightly shook the lid, anyways I opened up the lid by removing the 5 screws and you need a screwdriver to put in each of the little openings around the edge to pry open the lid. I removed the belt and metal plate, watch out there is a spring attached to it, don;t forget how this part works when you put it back on, I found both of the little broken pegs and glued them back on with a strong plastic epoxy glue that I bought at Ace Hardware, I let that dry for 24 hours and then put the metal plate and wheel on then put the belt around the wheel, and now everything works fine.

    Mar 06, 2009 | Epson Perfection 4990 Flatbed Scanner

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