All posts by arakif

SR400, oil seal exchange at the place of the flywheel

SR400,500

I went to Naoyan ‘s house to see the SR of Naoyan.I also got on the SR.↑↑

Although this SR 500 has been exhibited at Yahoo auction, I am riding about once a week in order to check if there is a problem in maintenance and trouble.

Oh, there was. This is Naoyan ‘s SR ↓.I will exchange the oil seal on the flywheel side of the crank today. Because it is leaking.

By the way, I also exchanged my SR500. Because it was leaking.

First of all, I have bad news before changing the oil seal.

I heard that the male screw coming out of the crank here was overtightened, thinking it was a reverse screw.It is common in SR that we break this screw.

We have establish a countermeasure method.Cut the male screw on the crank side,Tap off,Make it a female screw,I will stop it with bolts.

It is a transsexual surgery in human terms.

In this way, take the oil seal.

Push in a thin screwdriver.Privately, PB’s 0 minus is ◎.

Way of taking an oil seal here,There are other theories, such as removing with a tapping screw,I think that this method is better.

I was able to remove it.Surprisingly there is a crankside bearing just beyond the oil seal.Near.

I Insert a new seal, but because the diameter of the seal is big, it is best to put it in “finger power”.On the contrary, if you try to insert it with a large iron cylinder or the like, it will be inclined.It moves straight in a tilted state.

Exchange completed.

Combine coils

We assembled a flywheel and tightened the screws. No torque is Hang.

It is necessary to tap off.

It was already dark when I came home.The temperature has gradually declined.Cold.

I make SR400 of RH03J type made into 17 inches tubeless with OUTEX kit.

SR400,500

Before swinging out, I was exchanging bearings.
It did not have the abnormality, but changed it because I disassembled.

I take the oil seal and weld an iron bar.
This clamp is for temporary fixation.

The welding ground was attached to the brake bolt.

I attach a iron rod by welding and can remove it when I tapping it from the opposite.

If I remove the rubber seal of the bearing,I can weld more beautifully.

If I can remove one side, I can easily remove it because I will be able to hit the opposite.

If I can remove both, I will put a new bearing.
If I hit only the inner ring, the load will be applied to the ball, so I will hit the outer ring or the whole as a whole.
In this way I put both bearings.

Parts number of the bearing.
6303LLU C3. Quantity 2.
I used the general-purpose NTN made bearings instead of genuine parts.

Parts number of oil seal.
93106-28023. Quantity 1.
93105-45017. Quantity 1.

Complete.
After this I will take a runout and make it tubeless with OUTEX ‘s tubeless kit.

It is completed by attaching the tire.

The front tire is 110 / 70R Dunlop α – 13 SPORTMAX.
The maker parts number is 304541.

The rim width is 3.00.
I made the rotor bolt new. Parts number 90111 – 08003. Quantity 6.
The front does not interfere with the car body in particular.