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How do you tighten pedal sprocket bearing - Schwinn Cycling

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Posted on May 23, 2011

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1 Answer

Knocking sound coming from sprocket on new Mongoose Malus 26" only when pedaling. Do you have any suggestions?


Do you mean the chainwheel (front "sprocket") or the cog(s) (rear "sprocket"? If the former then crank bearing is out of adjustment, if the latter, then the freewheel/cassette may be bad or the hub bearings out of adjustment. As you can see there are too many possibilities to diagnose remotely. I would suggest you get the help of a bike co-op, a knowledgeable friend or a bike shop do determine the problem and fix.

Oct 18, 2016 | Mongoose Cycling

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Mechanical System Troubleshooting for Stairmaster 4000PT Stepper


  1. Remove the side covers. WARNING: TO REDUCE THE RISK OF INJURY, DO NOT OPERATE THE MACHINE WHILE THE COVERS ARE REMOVED. DO NOT DEPRESS OR RAISE THE PEDALS WHILE ANYONE'S HANDS ARE INSIDE THE MACHINE.
  2. Remove the Poly-V belt and inspect the belt for cracks, fraying or any other unusual or excessive wear.
  3. Spin the alternator pulley to check the bearings. Replace the alternator if any clicking or grinding noises are heard.
  4. Inspect the alternator pulley for wear.
  5. Tighten the transmission pulley set screw to the flat side of the transmission output shaft.
  6. Remove the drive chain and inspect the chain for frozen links. Replace a chain with frozen links.
  7. Tighten the transmission drive sprocket set screw to the keyway in the transmission input shaft.
  8. Spin the transmission drive sprocket input 1 complete revolution. The transmission pulley output should turn 19 revolutions. Replace the transmission if any clicking or grinding noises are heard during rotation or the drive ratio is not 19 to 1.
  9. Remove the step chains and return springs from the main frame of the machine.
  10. Inspect the step chains for frozen links and the springs for corrosion. Replace a chain with frozen links and replace a corroded spring.
  11. Make sure that the step chain connection points pivot freely and have no vertical play.
  12. Remove the pedals, pedal arms, and leveling arms and lubricate according to the maintenance section of the manual.
  13. Verify that the clutch sprockets of the hub assembly spin freely in the forward direction and lock in the reverse direction.
  14. Inspect the hub assembly for wear. The drive shaft sprocket should not move up and down or side to side.
  15. Clean and lubricate the drive and step chains with 30W motor oil.
  16. Reinstall all parts, ensuring the proper tension of the Poly-V belt and the drive chain.

Stairmaster Mechanical System Troubleshooting for 4000PT

on Feb 25, 2015 | Stairmaster 4000PT Stepper

1 Answer

Chain alignment


the pedal sprocket is a fixed position and the adjustment is done at rear wheel the chain will go out of alignment if rear tire is not tightened correctly which would cause wheel to tilt --bearing in wheel or pedal damaged --

Aug 30, 2015 | John Deere 20 Inch Kids Bike Riding Toy

1 Answer

How do I tighten the crank


assuming that the crank and pedal arms are all one piece, you will see an adjuster nut on the side opposite to the sprocket
There is actually 2 nuts here. the outside one is a lock nut so you will have to loosen that off then tighten up the inner nut which is actually the outer race of the ball bearing
there will be 2 holes for a special tool or you can use a circlip pliers to adjust it
the adjustment is to the point of no sideways movement of the crank as too tight means that the effect is like pedalling into a head wind all the time when adjusted re tighten the lock nut.

Jun 14, 2015 | Cycling

1 Answer

Como poner la banda de tienpo de un toyota camery


Installation
1.Install No. 2 idler pulley (if removed). Install and tighten bolt to specification. See TORQUE SPECIFICATIONS . Ensure idler pulley is clean and rotates smoothly. 2.Install No. 1 idler pulley and tension spring (if removed). Pry No. 1 idler pulley away from timing belt area as far as possible. Temporarily tighten No. 1 idler pulley bolt. Ensure idler pulley is clean and rotates smoothly. 3.Using crankshaft pulley bolt, rotate crankshaft so timing mark on crankshaft sprocket aligns with timing mark on oil pump housing. See. This will position keyway in crankshaft sprocket at 12 o'clock position.

CAUTION:If reusing timing belt, ensure reference marks on timing belt align with reference marks placed on crankshaft and camshaft sprockets. Ensure timing belt is installed in original direction of rotation.
4.Ensure all sprockets and idler pulleys are clean. Install timing belt on crankshaft sprocket, oil pump sprocket, No. 1 idler pulley, and then No. 2 idler pulley in sequence. 5.Install timing belt guide with cupped side away from crankshaft sprocket and flat side toward timing belt. Install No. 1 timing belt cover and new gasket. 6.Align crankshaft pulley key groove with key in crankshaft. Install crankshaft pulley. Install and tighten crankshaft pulley bolt to specification. 7.Rotate crankshaft clockwise so cylinder No. 1 is at TDC on compression stroke. Ensure timing mark on crankshaft pulley aligns with "0" mark on No. 1 timing belt cover. If reusing timing belt, ensure reference mark on timing belt aligns with upper edge of No. 1 timing belt cover. 8.Rotate camshaft, and align hole in camshaft sprocket with alignment mark on camshaft bearing cap. See Fig. 2 . Install timing belt on camshaft sprocket. If reusing timing belt, ensure reference mark on timing belt aligns with the reference mark on camshaft sprocket. Ensure tension exists on timing belt between the crankshaft and camshaft sprockets.
CAUTION:DO NOT rotate crankshaft counterclockwise, as viewed from timing belt end of engine.
9.Loosen No. 1 idler pulley bolt 1/2 turn. Rotate crankshaft pulley 2 full revolutions clockwise from TDC to TDC. 10.Ensure timing mark on crankshaft pulley aligns with "0" mark on No. 1 timing belt cover, and hole in camshaft sprocket aligns with alignment mark on camshaft bearing cap. See Fig. 2 . If timing marks are not aligned, remove timing belt and reinstall. 11.Rotate crankshaft clockwise 1 and 7/8 revolutions and align crankshaft pulley "0" mark with 45-degree Before Top Dead Center (BTDC) mark on No. 1 timing belt cover. See Fig. 5 . 12.Tighten No. 1 idler pulley bolt to specification. See TORQUE SPECIFICATIONS . Install No. 2 timing belt cover and gaskets. Install and tighten spark plugs to specification. 13.To install remaining components, reverse removal procedure. Install all bolts/nuts on right (timing belt side) engine mount before tightening to specification. 14.On Camry, when installing control rod and bracket on strut tower and right (timing belt side engine mount, tighten bolts to specification in sequence.

Dec 23, 2010 | 1993 Toyota Camry V6

1 Answer

Dont no how to set the timming and what it suppose to be


Timing Chain and Sprockets
REMOVAL & INSTALLATION




  1. Fig. 1: At 90 degrees past TDC, the crankshaft sprocket timing
    mark and keyway will align with the main bearing cap split line
    84193100.gif






    Fig. 2: Exploded view of the timing chain and sprocket
    assembly - SOHC engine
    84193101.gif






    Fig. 3: Insert the timing pin to ensure that the camshaft is at
    No. 1 TDC - SOHC engine
    84193102.gif






    Fig. 4: When the camshaft is at TDC, rotate the crankshaft
    counterclockwise 90 degrees to achieve TDC
    84193103.gif


DOHC Engine

  1. Disconnect the negative battery cable.
  2. Remove the timing chain front cover.
    NOTE: During timing chain and sprocket removal, position the
    crankshaft 90 degrees past Top Dead Center (TDC) to make sure the pistons will
    not contact the valves upon assembly.



  3. Carefully rotate the crankshaft clockwise so the timing mark on the
    crankshaft sprocket and keyway align with the main bearing cap split line.
  4. Remove the bolts, then remove the timing guides and tensioner.
  5. Remove the camshaft sprocket bolts, using a 7?8 in. (21mm) wrench
    to hold the camshaft. Then remove the timing chain and camshaft sprocket. Remove
    the crankshaft sprocket, if necessary.
    To install:

  6. Inspect the chain for wear and damage. Check the inside diameter of the
    chain, it should be no more than 23.15 in. (588mm). Inspect the chain guides for
    wear or cracks and the timing sprockets for teeth or key wear. Replace
    components as necessary.
  7. Verify that the crankshaft is positioned 90 degrees clockwise past TDC. The
    crankshaft keyway should be at 3 o'clock aligned with the main bearing cap split
    line to prevent piston and valve damage.
  8. Install the camshaft sprockets, retaining bolts and washers. Make sure the
    letters FRT on the sprockets face forward, away from the cylinder block. Use the
    wrench flats provided on the camshafts to hold the shaft and tighten the bolts
    to 75 ft. lbs. (102 Nm).
  9. Bring the camshafts up to No. 1 TDC by rotating the camshafts and sprocket
    until the dowel pins are at 12 o'clock. Install a 1?6 in. drill bit
    into the hole in the sprocket about 9 o'clock.
  10. If removed, install the crankshaft sprocket, then rotate the crankshaft
    counterclockwise 90 degree up to No. 1 TDC (keyway and sprocket timing mark at
    12 o'clock, in alignment with the block timing mark).
  11. Position the timing chain under the crankshaft sprocket and over the
    camshaft sprockets so 2 silver link plates align with the reference marks on the
    camshaft sprockets and another 2 plates align with the downward tooth (at 6
    o'clock position) on the crankshaft sprocket. Excess chain slack should be
    located on the tensioner side of the cylinder block.
  12. Verify that the crankshaft reference mark aligns with the cylinder block
    mark at 12 o'clock and that the timing pins are installed in the holes at about
    the 9 o'clock position. Remove the timing pins from the camshaft sprockets.
  13. Install the timing chain fixed guide to the right of the block face toward
    the water pump. Tighten the bolts to 21 ft. lbs. (28 Nm) and verify the chain is
    snug against the guide.
  14. Install the pivoting chain guide and check for clearance between the block
    and head. Tighten the bolt to 19 ft. lbs. (26 Nm) and verify the guide pivots
    freely.
  15. Install the 2 forward camshaft bearing caps and the upper timing chain
    guide, then tighten the retaining bolts to 124 inch lbs. (14 Nm).
  16. Retract the tensioner plunger and pin the ratchet lever using a 1?8 in. (3.18mm) No.
    31 drill bit inserted in the alignment hole at the lower front of the component.
    Install the tensioner and tighten the bolts to 14 ft. lbs. (19 Nm), then remove
    the drill bit.
  17. Make one final check to verify all components are properly timed, then
    remove all timing pins.
  18. Install the timing chain front cover.
  19. Connect the negative battery cable, start the engine and check for leaks.





    Fig. 5: Rotate the crankshaft clockwise until the timing mark
    on the crankshaft sprocket and keyway align with the main bearing cap split line

    89563pb1.jpg






    Fig. 6: Loosen the timing chain tensioner mounting bolt . . .
    89563pb4.jpg






    Fig. 7: . . . and remove the tensioner from the engine block
    89563pb7.jpg






    Fig. 8: Retract the tensioner plunger and pin the ratchet lever
    with a 1?8
    in. (3.18mm) drill bit inserted in the alignment hole
    89563pb5.jpg






    Fig. 9: Remove the mounting fasteners from both timing guides .
    . .
    89563pb8.jpg






    Fig. 10: . . . and remove the timing guides from the engine
    89563pc1.jpg






    Fig. 11: Remove the camshaft sprocket bolts, using a 7?8 in. (21mm) wrench
    to hold the camshaft
    89563pc2.jpg






    Fig. 12: Remove the timing chain and camshaft sprockets
    89563pc4.jpg






    Fig. 13: Insert the timing pins to verify that the camshafts
    are at TDC
    84193146.gif






    Fig. 14: Make sure that the silver link plates and reference
    marks are all in alignment as shown
    84193145.gif



prev.gif next.gif

Oct 07, 2010 | 1998 Saturn SL

1 Answer

2005 f250 5.4 gas need to know specs for timing a diagram would be awesome


To Install:
  1. Install balance shaft drive gear onto the left camshaft.
  2. Install the camshaft sprockets and new bolts finger tight.
  3. Using a vise, compress the timing chain tensioner plunger.
  4. Install a retaining clip on the tensioner to hold plunger IN during installation.
    marking timing chain a0038720.gif

  5. If timing chain copper links are not visible, mark 2 links on one end and 1 link on the other end to be used as timing marks.
  6. Install right and left timing chain guides. Tighten bolts to 89 in-lbs (10 Nm).
  7. Rotate the left camshaft until the timing mark is at the 12 o'clock position.
  8. Rotate the right camshaft until the timing mark is at the 11 o'clock position.
  9. Position the crankshaft using the special tool. Then remove the tool.
    Crankshaft special tool positioning n0013602.gif

  10. Install the crankshaft sprocket with flange facing forward.
    Crankshaft sprocket timing mark n0011528.gif

  11. Position lower end of left (inner) timing chain on the crankshaft sprocket. Align the copper (or marked) chain link with the timing mark on the outer flange of the crankshaft pulley. NOTE: Upper half of timing chain must be below the tensioner arm dowel.
  12. Position the left timing chain on the camshaft sprocket. The timing mark on the camshaft sprocket must be aligned between the 2 copper (or marked) chain links.
    Left camshaft sprocket timing mark a0080774.gif

  13. Place the left timing chain tensioner arm on the dowel pin and install the timing chain tensioner and bolts. Tighten bolts to 18 ft-lbs (25 Nm). NOTE: Lower half of timing chain must be above the tensioner arm dowel.
    Crankshaft sprocket timing mark a0079624.gif
  14. Position lower end of right (outer) timing chain on the crankshaft sprocket. Align the copper (or marked) chain link with the timing mark on the outer flange of the crankshaft pulley.
    Right camshaft sprocket timing mark a0041104.gif

  15. Position the right timing chain on the camshaft sprocket. The timing mark on the camshaft sprocket must be aligned between the 2 copper (or marked) chain links.
  16. Place the right timing chain tensioner arm on the dowel pin and install the timing chain tensioner and bolts. Tighten bolts to 18 ft-lbs (25 Nm).
  17. Remove the retaining clips from the right and left timing chain tensioners.
  18. Verify alignment of all timing marks.
  19. Install crankshaft sensor ring on crankshaft.
  20. Locate index mark on balance shaft and mark corresponding gear tooth with chalk.
  21. Position balance shaft on journals. NOTE: It may be helpful to use an inspection mirror to view the marks timing marks.
  22. Align the chalk mark on the balance shaft with the camshaft timing mark.
    Balance shaft bearing caps n0007112.gif

  23. Install the balance shaft bearing caps in their original locations. Follow the tightening sequence as shown in the illustration. Tighten bolts to 89 in-lbs (10 Nm).
  24. Tighten the camshaft phaser sprocket bolts in the correct sequence using 2 steps, as follows:
    • Step 1-30 ft-lbs (40 Nm)
    • Step 2-tighten an additional 90 degrees
  25. Position the crankshaft keyway in the 11 o'clock position.
  26. Lubricate and install all camshaft roller followers. WARNING
    Engine front cover replacement procedure must be completed within 4 minutes or entire procedure must be repeated. Failure to do so may result in future leaks

Oct 07, 2010 | Ford F-250 Cars & Trucks

1 Answer

Front crank sprocket clicking on bycycle, when I pedal the front crank sprocket clicks, it isn't the pedals.


make sure all sprocket bolts are tight.
check chain to make sure you have all rollers between links are there.this can make a clicking noise or skip teeth if one is missing when you pedal.
if you feel clicking in the pedals (even if you think it isnt the pedals),then it could be your bottom bracket bearing gone.
put one pedal towards the floor and stand on it.did it click?then try the other pedal.if you got it to click then your bottom bracket is loose

Sep 13, 2010 | Cycling

1 Answer

Rear wheel won't turn when pedaling


hi there,

put your bicyles on upside down position,wheel should on top so you can work freelywork on ,then rotate the pedal to check what the problem it should be freely rotating,check break pads if it was engage even w/o pressing control.release brake cable wire to loosen.if not in the break,check the sprocket gear if connecting to the chain belt,check your sprocket release lock,if damage replace sprocket, check the bearing of the two wheel center shafting if worn out replace bearing,on front wheel there are two quick release nuts,loosen and pull out wheel and loosen all nuts and lock plate bearing,pull out shafting with the bearing,examine mostly bearing worn out also shafting in some occasion its worn out also,possible if you want replace one set center shafting and bearing ts not costly,on rear wheel with sprocket it different to disconnect,beacause there is sprocket,you should dismantle the locked plate and lock nuts of sprocket before the shafting assymble same procedure now on front wheel when after disconnecting sprocket on rear wheel.hope this will guide you and solved your problem have anice day.

Jul 14, 2009 | Mongoose Cycling

2 Answers

Need instructions to replace 1993 Toyota Camry Timing Belt


Hi Kmcarroll77

TIMING BELT REPLACEMENT - 2.2L -1993 Toyota Camry

Installation
1.Install No. 2 idler pulley (if removed). Install and tighten bolt to specification. See TORQUE SPECIFICATIONS . Ensure idler pulley is clean and rotates smoothly. 2.Install No. 1 idler pulley and tension spring (if removed). Pry No. 1 idler pulley away from timing belt area as far as possible. Temporarily tighten No. 1 idler pulley bolt. Ensure idler pulley is clean and rotates smoothly. 3.Using crankshaft pulley bolt, rotate crankshaft so timing mark on crankshaft sprocket aligns with timing mark on oil pump housing. See. This will position keyway in crankshaft sprocket at 12 o'clock position.

CAUTION:If reusing timing belt, ensure reference marks on timing belt align with reference marks placed on crankshaft and camshaft sprockets. Ensure timing belt is installed in original direction of rotation.
4.Ensure all sprockets and idler pulleys are clean. Install timing belt on crankshaft sprocket, oil pump sprocket, No. 1 idler pulley, and then No. 2 idler pulley in sequence. 5.Install timing belt guide with cupped side away from crankshaft sprocket and flat side toward timing belt. Install No. 1 timing belt cover and new gasket. 6.Align crankshaft pulley key groove with key in crankshaft. Install crankshaft pulley. Install and tighten crankshaft pulley bolt to specification. 7.Rotate crankshaft clockwise so cylinder No. 1 is at TDC on compression stroke. Ensure timing mark on crankshaft pulley aligns with "0" mark on No. 1 timing belt cover. If reusing timing belt, ensure reference mark on timing belt aligns with upper edge of No. 1 timing belt cover. 8.Rotate camshaft, and align hole in camshaft sprocket with alignment mark on camshaft bearing cap. See Fig. 2 . Install timing belt on camshaft sprocket. If reusing timing belt, ensure reference mark on timing belt aligns with the reference mark on camshaft sprocket. Ensure tension exists on timing belt between the crankshaft and camshaft sprockets.
CAUTION:DO NOT rotate crankshaft counterclockwise, as viewed from timing belt end of engine.
9.Loosen No. 1 idler pulley bolt 1/2 turn. Rotate crankshaft pulley 2 full revolutions clockwise from TDC to TDC. 10.Ensure timing mark on crankshaft pulley aligns with "0" mark on No. 1 timing belt cover, and hole in camshaft sprocket aligns with alignment mark on camshaft bearing cap. See Fig. 2 . If timing marks are not aligned, remove timing belt and reinstall. 11.Rotate crankshaft clockwise 1 and 7/8 revolutions and align crankshaft pulley "0" mark with 45-degree Before Top Dead Center (BTDC) mark on No. 1 timing belt cover. See Fig. 5 . 12.Tighten No. 1 idler pulley bolt to specification. See TORQUE SPECIFICATIONS . Install No. 2 timing belt cover and gaskets. Install and tighten spark plugs to specification. 13.To install remaining components, reverse removal procedure. Install all bolts/nuts on right (timing belt side) engine mount before tightening to specification. 14.On Camry, when installing control rod and bracket on strut tower and right (timing belt side engine mount, tighten bolts to specification in sequence. See Fig. 6 . On MR2, tighten engine
b7619be.jpg
92cabaf.jpg
Hope this helps, don't forget to rate.

Lazaruselite

Feb 25, 2009 | 1993 Toyota Camry V6

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