Replacement of the rear axle hub bolt #2

My Alfa had one damaged hub bolt. In the past the press-fitting of this hub bolt to the hub became loose, and I had the trouble that the wheel couldn’t be removed because the hub bolt was turned together with the wheel nut. In order to remove the wheel I finally destroyed the nut by drilling after try and error, and the bolt was damaged at that time. I brought the removed hub to my friends, and asked him the spot-welding to fix the loose bolt to the hub.

Therefore, before removing the damaged hub bolt, I had to remove the spot-welding with the disc grinder.

After removing the point-welding the damaged bolt was easily come off by striking with a hammer. It seemed that the press fitting of the bolt was loose.

The new hub bolt was inserted.

In order to make the bolt insert more tightly the new bolt was pressed by a vise using the socket as a jig.

This might be enough, however, I still had a doubt because of the trouble happened before.

Near my house a few minute by walking, there was a small ironworks that an old man was the owner.

I brought the hub there to ask him the spot-welding to eliminate the risk of bolt loosing again.

I explained what I would like him to do. He kindly accepted my request and welded the bolt very quickly.

He did the spot-welding at 2 positions. Perfect!!!

Then, I asked him the price, but he said he didn’t need money.

I said again that I would like to pay, but he didn’t change his mind.

THANKS!!!

I would bring a bottle of SAKE next time.

(My original blog was written on 15th Feb. 2009)

Comments

Clutch master cylinder overhaul #2: tough match

I disassembled the removed clutch master cylinder. And I found that the piston was heavily rusted. I tried to hit it with a hummer , Pushed the piston using the vise clamp like this. However , the piston was heavily sticking by rust and it could not to be moved today. The brake master cylinder was replaced in the past , however , the clutch master cylinder was not. Therefore , the condition of the clutch master cylinder might be worse. Tentatively , I would spray the rust-penetration lubricant from both sides of the piston and try again in a few days. If it doesn ’ t work , I would give up the overhaul and order the new part. ( My original blog was written on 2nd July 2009 )

Clutch master cylinder overhaul #3

I was still struggling with the sticking piston of the clutch master cylinder. I thought I should give up and look for the new part for the replacement. And to for my curiosity , I started to destroy and disassemble the clutch master cylinder piston by drilling. When I was drilling the piston halfway , I didn ’ t have any specific idea , however , I thought to tap the piston to make the thread. I started to turn the tap handle , and I felt the feeling that the piston was moved. So , I tried to pull it , and then suddenly the piston was removed from the cylinder. Finally I could extract the rusty piston! I observed the extracted piston. It looked there was no risk of the leakage of the fluid because the hole I made in the piston was not penetrated. Thinking the function that this part only holding the rod connected with the clutch pedal , it could be reused if the hole would be filled by the hard material. However , be...

Next task is to overhaul the rusty clutch master cylinder

The overhaul of the brake master cylinder was finished and I ’ ve started the overhaul of the clutch master cylinder located at next to the renewed brake master cylinder. I started from the removal of the pipe lines. In one of the pipe lines , however , the flare nut and pipe were stuck together. The pipe would be twisted in case the flare nut was turned. I tried several methods , such as blowing the lubricant or knocking the nut , to avoid collapsing the pipe. However , it seemed there is no way. So , I gave up rescuing this pipe line. I separated the other end of the pipe ( clutch slave cylinder side ) and removed the clutch master cylinder with the pipe line. I had to create the new pipe line by copper pipe. I ’ ve started to look for the pipe flaring tool on the internet auction. I did one another small improvement. The O rings at the acceleration pump jet plugs of WEBER carbs were deteriorated by gasoline so that...

The day my "onboro ALFA" would revive

Search This Blog