Question about 1983 Honda XL 125 R

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Engines how can i take out the pinion bearing to remove the con rod from my sons motobike a cr 80/85 1996 model

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Hi m8,, the only way is to press them out,, a fly press,,or local bike garage or engineer will have one ,,and should assist u,,the only way m8 im affraid,,cheers

Posted on Jan 20, 2009

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Pulsar 135 crankshaft problem


Replacing one journal or rod cap is not an unusual thing. The motor could be in perfect shape and one piston spin a bearing. It will have to be torn down and have the crankshaft ground and an undersized bearing put in it. It should run on for years after that. I would try to find a bike shop that is independently owned because as you said the dealer is going to want to rebuild the entire engine and you don't need it rebuilt. It will cost enough with just the one Rod Bearing. I would not run it to much until I had it fixed. If it breaks and comes through the engine housing then you do have problems. Again I would shop around the small independent bike shops and see which is cheapest, then see what kind of a reputation they have. As for how much it will cost I have no idea. It depends on where you live and how many shops are around and what the exact problems is. Like I said just shop around.

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Hi my lambretta lost power and cut out I tried to kick start it but the engine locked up I then removed the head and barrell to check piston all ok Is my crank dammaged


It could actually be several things, con rod main bearing or broken gearbox transmission trouble. To check with the barrel and cylinder removed see if the con rod moves freely and smoothly. If it does then your trouble is further down transmission. drain oil, remove side case and take a look. Jack the engine so the rear wheel can be spun. Then with the engine in gear, roll the rear wheel and look to see where the locking up occurs. If you are in any doubt, use the scooterotica forum to post pictures and questions www.scooterotica.co.uk you can get all your technical questions answered there.

Aug 28, 2011 | Lambretta KLX 450R Motorcycles

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I have a 2003 Yamaha ttr125er. The connecting rod bearing was seized up on the crank. I am wondering if I will be able to disassemble the crank and put a new pin and bearing in and reassemble the crank...


Allan this is a shop job for the connecting rod. You should be able to do the rest yourself if your mechanic abillities are good. If you got the engine hot enough to seize it you might have more problems instore for you. Are you sure it is a con rod and not piston in cylinder seized? If it is a con rod bearing see what a shop would charge, then see what is available on ebay for parts. I have seen them (crank and connecting rod) on ebay between $50.00 and $180.00.

Apr 19, 2011 | 2002 Yamaha TT-R 125 L

1 Answer

Was told that my lower end is junk. Seams fine to me but not sure on how to check with out splitting the Case. Is there any little tips or tricks. The rod has alittle side to side play but not...


Hi, spin the engine, with the piston removed hold onto the top of the con rod and start to turn it keep spining it and listen how quiet and smooth it is, the main bearings when worn will sound noisy and feel rough, the big end may lock up when worn,bring the con rod to the top, in the middle of the big end where the pin holds it to the crankshaft, you will see a cut through the rod where the bearing is visible inspect the bearing for condition, the bearings are held in a cage which when worn breaks and the rolers become loose, this may cause the bearing to lock, also check for up and down movement, at all parts of the stroke

Feb 26, 2011 | Suzuki RM 125 Motorcycles

1 Answer

How can i tell if my crankshaft bearing is going out


Hi, if the big end bearing fitted within the con rod on the crankshaft fails it is accompanied by a knocking noise when the engine is running, when the engine is striped and the crankshaft is out, movment of the con rod in an up and down direction while grasping the conrod between finger and thumb indicates big end failure, youmay also notice while rotating the con rod that it locks up, more so in 1 direction. Visual damage bearing cage failure visible from within the oil cut out on the big end of the conrod,
Crankshaft main bearing failure, the main bearings are fitted within the engine cases 1 left and 1 right, failure of this bearing would be movment of the crankshaft ends within the cases, accompanied by a rough vibrating sound.when running,
Hope this helps paul

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1 Answer

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The bearing for the lower end of the connecting rod is pressed between the crank halves. Most people would just replace the crank and rod assy. as the crank must be rebalanced after pressing a new bearing in.

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1 Answer

Lower connecting rod bearing in my cr 125 1998


Probably $900 at the shop. Price it out at a few shops. The entire engine gets torn down. Be sure to install new crankshaft end bearings and seals as well as shift shaft seal and sprocket outer bearing and seal. A flywheel puller, impact driver, case splitter and torque wrench will be needed. Sorry for the pain.

Could you take a moment and rate my answer? Thanks!

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2 Answers

Need electrical diagram


here is the diagram

http://i270.photobucket.com/albums/jj95/sunwall69/Honda92-01CR250_Wiring_1.png

and the actual mechanic service manual if you need it.

http://www.tradebit.com/filedetail.php/4593707-honda-cr-250-r-2002-2003-service-repair

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1 Answer

Removing the rear wheel bearings from the hub.......


I don't have any experience with a 2001 model but every CR and other motorcross bike I have had requires you to knock the bearings out of their own side of the wheel. You need to get in behind the bearing from the other side of the wheel and knock it out of its own side. I don't see how it could work any other way. Imagine you were replacing the bearings having got the old ones out. Is one of the bearings smaller enough to fit through the hole in the middle of the other bearing? It would need to be if they both come out of the same side? Otherwise the seat for the larger bearing in the hub would prevent you getting the smaller bearing out of its side? Hope you see where I am coming from, as I said I havn't worked on a 2001 model so its more of a logical argument than 100% advice. Good luck.

May 08, 2009 | Honda CR 125 R Motorcycles

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