See full version: Symptoms of a Bad or Failing Crankshaft Seal
If your vehicle is approaching high mileage, perhaps upwards of one hundred thousand miles, then the crankshaft seal may be approaching the end of it’s recommended service life. All manufacturers have a recommended service interval for most of the components on a vehicle. Servicing the crankshaft seal according to the recommended service interval can prevent the seal from failing in the first place, which can cause other problems. more
The crankshaft seal is mounted behind the engine’s main crankshaft pulley, so servicing it requires the removal of the belts and crankshaft pulley and harmonic balancer before it can be accessed. For this reason, if you suspect your crankshaft seal may be leaking or near the end of its service life, have the vehicle inspected by a professional technician, such as one from YourMechanic. They will be able to look over your car and determine if it needs a crankshaft seal replacement.
The crankshaft seal is the seal located on the front of the engine that seals the end of the crankshaft with the timing cover. Most crankshaft seals are made of rubber and metal and are round in shape. They are usually installed in the front timing cover and seal the end of the crankshaft as it rotates. While they are a relatively simple component, they serve an important purpose in keeping the oil that is constantly being used and tossed by the crankshaft as it rotates from leaking out of the engine’s crankcase. When they fail they can cause leaks which can make a mess, and if left unattended, can put the engine at risk of serious damage. Usually a crankshaft seal will display a few symptoms that can alert the driver that there may be an issue that should be serviced. more
Oil leaks are the most common symptom of a problem with the crankshaft seal. If the crankshaft seal dries out, cracks, or breaks, it can cause an oil leak. Small leaks can cause oil to accumulate on the undersides of the engine, while larger ones may produce a drip of oil from the front of the engine.
This article originally appeared on YourMechanic.com as Symptoms of a Bad or Failing Crankshaft Seal. [links]
Oil leaks are the most common symptom of a problem with the crankshaft seal. If the crankshaft seal dries out, cracks, or breaks, it can cause an oil leak. Small leaks can cause oil to accumulate on the undersides of the engine, while larger ones may produce a drip of oil from the front of the engine. here
The crankshaft seal is mounted behind the engine’s main crankshaft pulley, so servicing it requires the removal of the belts and crankshaft pulley and harmonic balancer before it can be accessed. For this reason, if you suspect your crankshaft seal may be leaking or near the end of its service life, have the vehicle inspected by a professional technician, such as one from YourMechanic. They will be able to look over your car and determine if it needs a crankshaft seal replacement. here
The crankshaft seal is the seal located on the front of the engine that seals the end of the crankshaft with the timing cover. Most crankshaft seals are made of rubber and metal and are round in shape. They are usually installed in the front timing cover and seal the end of the crankshaft as it rotates. While they are a relatively simple component, they serve an important purpose in keeping the oil that is constantly being used and tossed by the crankshaft as it rotates from leaking out of the engine’s crankcase. When they fail they can cause leaks which can make a mess, and if left unattended, can put the engine at risk of serious damage. Usually a crankshaft seal will display a few symptoms that can alert the driver that there may be an issue that should be serviced.
If your vehicle is approaching high mileage, perhaps upwards of one hundred thousand miles, then the crankshaft seal may be approaching the end of it’s recommended service life. All manufacturers have a recommended service interval for most of the components on a vehicle. Servicing the crankshaft seal according to the recommended service interval can prevent the seal from failing in the first place, which can cause other problems.
The total distance covered was only abour 4 miles (and it was snowing) so no real chance to get the motor up to working temperature. here
Who needs a signature anyway.
Basically this has meant getting it into a rideable state so that I can ride it to an MOT station so that once it has an MOT I can apply for UK registration.
This weekend I took it down the road for the first time and succesfully got an MOT :D when I rode it the motor was pretty reluctant to rev. After a couple of miles it started to run better but not as well as I expected. here
Perhaps 4 miles was not enough to establish whether it is OK or not - mebbe I need to give it enough time to properly warm up before worrying about whether the seals are shot or not. [links]
I’m not an old timer, but I know a thing or two, and this is how I do it. [links]
On 2 stroke dirt bikes, there is a rubber seal on either side of the crankshaft. Over time these dry out.
Seal rides on a good collar. [links]
While it’s up to debate, it’s widely understood that there is NEVER an appropriate use of RTV on a motorcycle. It will damage things quickly if it gets into your oiling system. If you are trying to retain the seal, use LocTite bearing and seal retainer. If you are trying to improve the seal and hold it in place, use an anaerobic sealer such as LocTite 518 or 520.
Bike still blows a ton of smoke and transmission oil is still coming out the exhaust, [links]