The day my "onboro ALFA" would revive

Add video with English subtitles. Short movie for the “Start Up Routine Alfa Romeo 1750GTV” https://youtu.be/x5peLRQ4Iq0 ———————————————— ↓ This is with Japanese subtitles.   https://youtu.be/1DnkgtVeJp0

Regarding the clutch master cylinder which I repaired the hole at piston with solder , one of my friend advised me that the solder might not be hard enough.  Therefore , I tried the repair again in another way. Disassembled the clutch master cylinder again. Now I can do it very quickly because I disassembled brake master and clutch master cylinders many times J Heated and removed the solder at the piston hole. I used the soldering iron instead of the burner because I heard giving too much heat on piston should be avoided. In this time , according to the advice from my friend , the repair method is to screw in the thread with strong adhesive into the hole , then grind the thread head to make the piston surface flat.  In order to do it I bought bolts and a grinding stone at the hardware store. Cutting the bolt to adjust the length to fit the hole depth.  Engrave the minus groove at the cut bolt head to make screwing in possible with minus scr

The overhaul of the clutch master cylinder , which I succeeded in the removal and repair of the piston with solder ( probably ), has been still continuing.  The master cylinder was disassembled and all parts were cleaned.  The condition of each part was not bad. In the last week the cylinder and rod were painted. Assembly started.  I checked the condition of the rubber parts originally used comparing with ones of the repair kit.  And I decided to use the original ones because the rubber was not deteriorated yet and the quality looked better than the repair kit ’ s one. Always the assembly is fast although I always struggled with the disassembly. Before After The overhauled master cylinder could be operated smoothly.  And I believe the appearance also became cleaner. ( My original blog was written on 26th Jul. 2009 )

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 , before repairing the holed

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 )

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 I replaced them wi