Question about Diamondback Lustre Two Women's Mountain Bike (26Inch Wheels)

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Crank removal for new bearings

Crank removal for new bearings

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Everything you need to know by the makers of the tools you need to own...

http://parktool.com/repair/byregion.asp?catid=61

...unless you just take it down to a Local Bike Shop.

Posted on May 31, 2010

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Posted on Jan 02, 2017

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1 Answer

How do I Adjust the bearings crank ? (bottom bracket axle)


It is according to what your crank design is.
1st. design. This is a solid crank. Look at your crank. One side will have a nut, and a race with slots in it. If this is yours then you take off the pedal on the side of the nut. Now take off the nut, use a screwdriver to remove the race. Pull that bearing out, then push the crank through the opening, removing the other bearing. If you have a multiple speed bike you have to remove the sprockets first.

2nd design. After removing the sprockets there is a bolt holding the crank arms on the shaft that the bearing are on. Remove the cranks and then remove the bearings the same as above.

Mar 25, 2015 | Mongoose Cycling

1 Answer

HOW DO I REMOVE THE CRANK


If I remember right the threads on the pedals are left handed, which means you turn in opposite direction than normal. then you unscrew the nut on the crank. The race for the bearings will have a slot. Use a screwdriver to turn it the normal way. Take out that bearing. Then move crank a little way to the other side to get bearing out from the inside race. Then you should be able to pull crank through.
On the newer bikes, the crank can be dismantled on each side so all you have is a shaft to remove. You still remove the race and bearings the same way.

Feb 27, 2015 | Mongoose MGX Maxim Dual Suspension...

1 Answer

Bearing oil clearance and new size bearing


Is the shaft a perfect shape, if a bit out, it will fail straight away as the hardened coating is now missing. Use Engineers Blue and check the shaft.

Mar 01, 2017 | 1994 Acura Legend

1 Answer

To change the outer main bearing on a t30 - 23405l do you have to take everything apart including taking off the jugs?


Let me give you some info. I guess you are talking about the bearing next to the fly wheel. The crankshaft has to come completely out. the crank can not be removed until you have removed the rods from the crank shaft pin. Most of the time if a bearing goes bad you need to replace the rods and crank shaft pin. I 've never done it but if you can get the rods out of the way the crank will come out. My recommendation would be, remove the fly wheel, remove the inner cooler, remove any small tubing lines, Remove the front frame cover, Remove the 2 bolts holding the crank pin bushing (don't forget to lock wire these bolts back together during assembly), Remove the cylinder, head, piston and rod together as a unit. Don't let the piston come out of the cylinder or move around to much unless replacing the rods. Once you get both LP and HP cylinders, heads etc off you can remove the front bearing cap exposing the bearing and a snap ring. Take a piece of wood or brass and from the crank shaft counter weight side (rod side)knock the crank shaft toward the fly wheel side until the snap ring can be removed. Once the snap ring is removed knock the crankshaft back toward the rod side and continue until out of the bearing races. Then remove the crank. The outer bearing can then be pressed off with the retainer at one time. Remove the sleeve. To remove the large bearing(back bearing) you need to be very careful and cut it off. Don't mess up the crank shaft. I've tried several ways to remove the back bearing but the easiest is cutting it off. To answer your question yes you have to disassemble to change bearings.

Aug 18, 2011 | Ingersoll Rand Air Tools & Compressors

2 Answers

The crank arm is stripped on the left side of the bike


Yes, the crank-arm could be replaced.
1.You would need to remove the flat nut holding the crank to the frame. And then take out the bearing.
2. A special open-ended wrench is required to remove this nut. Please visit your local bicycle shop for a new crank-arm, and the required tools, also.
3. Put in new crank-arm and its bearing.
4. Grease the bearing.
5. Tighten nut.
6. Give it a test ride.

Dec 10, 2009 | Schwinn Mesa Gs Mountain Bike

1 Answer

Shortblock, rings/bearings


Yes you can remove the pistons without removing the crank. All you need to do is make sure when you go back in with the pistons that the rods and studs don't scar the crank. You can do this by putting a piece of rubber vacuum line over the studs. As long as the bearings are ok and within spec then you can reuse them, just make sure you keep them with the rod that it casme off of and not mix them up. I don't reccomend reusing them because you can purchase new ones for about 30 bucks.

Dec 04, 2009 | 2000 Toyota Camry

1 Answer

How to disassemble crank bearing on Schwinn Mesa Mountain Bike


You wil need a couple of special tools, or be fairly creative with the tools you have.
  1. remove the dustcovers in the crank arms at the crank axle
  2. loosen the crank retaining nut/bolt.
  3. thread in a chank puller and pull the crank arms.
  4. remove the lock ring on the adjustable side of the crank axle (Requires lock ring wrench)
  5. remove adjustable bearing cup.
  6. remove axle and bearings
  7. replace or repair as needed.
Once you have it opened up ou can determine if you need new bearings or crank axle.
to assemble, reverse above procedure, insuring bearing play is minimalized.

Hope this helps.
Ed

Apr 16, 2009 | Schwinn Mesa Gs Mountain Bike

1 Answer

Suzuki 125rm manual


Find a manual by Googling " Motorcycle service manuals "
or go to www.repairmanuals.com

Installing new crank bearings is not a simple task. you will need a 3/8" impact driver, flywheel puller, case splitter and torque wrench. The top end comes off then the side cases, flywheel, flywheel electrics, clutch, shifter shaft, Crank drive gear and output shaft sprocket.

Split the case leaving the gears on the shafts and the shift drum and forks in place but out of the gearbox. Remove the crank and then remove the bearings from the crank or from the center casings depending on where they decide to stay when the case splits. Remove the crank seals from each center case half. Install new seals then install new bearings into the center casings.

Now just put everything back together.
By the way, now would be a good time to stick in a new output shaft (sprocket) bearing and seal. Be sure the OHC is timed correctly when installing the cam chain. Bad timing = bent valves.

Please rate this answer. Best wishes amcampailla

Mar 14, 2009 | 2003 Suzuki RM 125

1 Answer

Crank shaft movement


did you check the pulley on the crank shaft ??
is it warped ?? ( bent )
because i do not think that the truck will run with the crankshaft moving.....back and forth.
so in any case you have a lot of work to do.
here is how to remove the crank shaft.
REMOVAL
  1. Remove the oil pan.
  2. Remove the oil pump from the rear main bearing cap.
  3. Remove the vibration damper.
  4. Remove the timing chain cover.
  5. Identify bearing caps before removal. Remove bearing caps and bearings one at a time.
  6. Lift the crankshaft out of the block.
  7. Remove and discard the crankshaft rear oil seals.
  8. Remove and discard the front crankshaft oil seal.
INSTALLATION
  1. Lightly oil the new upper seal lips with engine oil.
  2. Install the new upper rear bearing oil seal with the white paint facing towards the rear of the engine.
  3. Position the crankshaft into the cylinder block.
  4. Lightly oil the new lower seal lips with engine oil.
  5. Install the new lower rear bearing oil seal into the bearing cap with the white paint facing towards the rear of the engine.
    1. Apply 5 mm (0.20 inch) drop of Loctite 518, or equivalent, on each side of the rear main bearing cap. DO NOT over apply sealant or allow the sealant to contact the rubber seal. Assemble bearing cap to cylinder block immediately after sealant application.
    2. lb align the bearing cap, use cap slot, alignment dowel and cap bolts. DO NOT remove excess material after assembly. DO NOT strike rear cap more than 2 times for proper engagement.
    3. Clean and oil all cap bolts. Install all main bearing caps. Install all cap bolts and alternately tighten to 115 Nm (85 ft. lbs.) torque.
    4. Install oil pump.
    5. Install the timing chain cover.
    6. Install the vibration damper.
      1. Apply Mopar Silicone Rubber Adhesive Sealant, or equivalent, at bearing cap to block joint to provide cap to block and oil pan sealing. Apply enough sealant until a small amount is squeezed out. Withdraw nozzle and wipe excess sealant off the oil pan seal groove.
      2. Install new front crankshaft oil seal.
      3. Immediately install the oil Dan.
if you have an email address i can send some images

Jun 07, 2008 | 1998 Dodge Dakota

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