fangsingh
Full Niva Petrol Head
Fiat Berlinetta 8V 1954
Posts: 162
Location: Kwazulu-Natal
Town: Queensburgh
Registered: Mar 6, 2011 22:06:12 GMT 2
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Post by fangsingh on Mar 10, 2013 22:36:05 GMT 2
HI Ronnie The piston on my regulator was rusted over There were rust particles inside the boot and no grease
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Post by ronnie on Mar 11, 2013 10:31:21 GMT 2
Hi Fangsingh
I think once you have opened it and cleaned it, (if possible) the best way to keep it usable is to fill the boot with grease so water cannot hopefully get into the boot.
Ronnie
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Post by marius on Mar 11, 2013 18:25:35 GMT 2
HI Ronnie The piston on my regulator was rusted over There were rust particles inside the boot and no grease Yet another VERY common phenomena on a SA Niva! Marius
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dylan
New Niva Petrol Head
if only my budget stretched as far as my imagination with regard to this Lada of mine
Posts: 20
Location: Eastern Cape
Town: Port Elizabeth
Registered: Jul 4, 2013 20:05:29 GMT 2
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Post by dylan on Jul 8, 2013 15:09:13 GMT 2
Hey Guys,
My regulator siezed and the rear locks up on hard braking on the tar. Is this a servicable unit?
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spikes
Moderator
Posts: 3,689
Location: Mpumalanga
Town: Nelspruit
Registered: Apr 19, 2010 19:39:51 GMT 2
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Post by spikes on Jul 8, 2013 15:19:07 GMT 2
Hi Dylan
Yes, It can be serviced. You should get the seals from a brake and clutch centre if required. You will have to take sample along. Not sure about the rubber boot but take that along as well and please post part or source for the maintenance list.
Spikes
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Post by ronnie on Jul 8, 2013 15:24:25 GMT 2
Hi Dylan
Not sure if you can get new seals or not, but I have opened, cleaned and re-greased one in the past. As far as I know it is still working. The rubber boot fills with water over time and causes the problems. I filled the boot with rubber grease and secured it with cable ties. If you can keep the water out it should last a very long time.
Ronnie
PS If I remember right you need to make a tool to open it. There is a thread somewhere on the forum which deals with it.
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fangsingh
Full Niva Petrol Head
Fiat Berlinetta 8V 1954
Posts: 162
Location: Kwazulu-Natal
Town: Queensburgh
Registered: Mar 6, 2011 22:06:12 GMT 2
Karma: Exalt | Smite
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Post by fangsingh on Jul 8, 2013 22:33:46 GMT 2
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Deleted
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Registered: Apr 29, 2024 6:15:34 GMT 2
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Post by Deleted on Jul 8, 2013 22:52:43 GMT 2
I also stripped and cleaned mine. The seals on mine were fine, but rust was stopping the piston from moving. Once the rust was removed it worked fine again. As Ronnie says, grease in the rubber is a must
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Post by ronnie on Jul 9, 2013 9:10:45 GMT 2
Hi Conrad
The regulator was by-passed when I bought the Niva. Like you I was lucky and after cleaning up the rust the seals were in good condition.
Ronnie
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fangsingh
Full Niva Petrol Head
Fiat Berlinetta 8V 1954
Posts: 162
Location: Kwazulu-Natal
Town: Queensburgh
Registered: Mar 6, 2011 22:06:12 GMT 2
Karma: Exalt | Smite
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Post by fangsingh on Jul 9, 2013 18:56:40 GMT 2
Hi Ronnie and Conrad
I wasn't as lucky as you guys. My regulator was rusted over and the piston was not working. So I took out the regulator, and gave it to a brake company to recondition. When I went to fetch it, the regulator looked new. It was sand-blasted, and they did not charge me because the guy said he did not have seals, and he didn't want to fiddle too much with it. I fitted the regulator on, and tried the brakes. As the piston shifted, the brake fluid would leak off. Hence, I had to get a new one.
Dheer
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spikes
Moderator
Posts: 3,689
Location: Mpumalanga
Town: Nelspruit
Registered: Apr 19, 2010 19:39:51 GMT 2
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Post by spikes on Jul 9, 2013 18:59:34 GMT 2
Hi Dheer
Did they sandblast the piston and the interior of the regulator?
Spikes
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fangsingh
Full Niva Petrol Head
Fiat Berlinetta 8V 1954
Posts: 162
Location: Kwazulu-Natal
Town: Queensburgh
Registered: Mar 6, 2011 22:06:12 GMT 2
Karma: Exalt | Smite
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Post by fangsingh on Jul 9, 2013 19:21:37 GMT 2
Hi Spikes Well, the exterior was sandblasted. The piston worked thereafter. I wouldn't know if they sandblasted the interior, as I didn't open the unit. My bad. I still have the old regulator, I'll open it and check, sometime in the far future Dheer
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spikes
Moderator
Posts: 3,689
Location: Mpumalanga
Town: Nelspruit
Registered: Apr 19, 2010 19:39:51 GMT 2
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Post by spikes on Jul 9, 2013 19:37:17 GMT 2
Hi Dheer,
Thanks for getting back! Please take pictures when/while you strip the regulator. Tolerance on hydraulic pistons and cylinders are very close and sandblasted without new seals probably caused the leaking.
Only the finest grit water sandpaper should be used or the special honing tools. Which is why most garages fit new items. Fortunately we can now get the essential parts from suppliers as you did.
Regards
Spikes
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dylan
New Niva Petrol Head
if only my budget stretched as far as my imagination with regard to this Lada of mine
Posts: 20
Location: Eastern Cape
Town: Port Elizabeth
Registered: Jul 4, 2013 20:05:29 GMT 2
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Post by dylan on Jul 9, 2013 20:03:17 GMT 2
PS If I remember right you need to make a tool to open it. There is a thread somewhere on the forum which deals with it. Hey guys, Unfortunately I didn't take photos of me servicing the reg today. What I did was, instead of making a tool like Ronnie suggested ( I did do a search, and stole from your idea), i simply inserted two 8mm drill bits straight down into the vice and used a big shifting spanner to grip the regulator and turn it while the drill bits stayed stationary in the vice. same principle as your method Ronnie, just less advanced . Once cracked open, you can unscrew it by hand. Beware as it reaches the end of the thread as it is spring loaded and can jump out. We all know how long it takes to find parts in the garage that have gone their own way via this evil stored energy known as a spring. Anyway, the "piston" that goes up and down via the road that is connected between the chassis and the body, was really caked with rust/sludge. I took some 1500gritt wet paper and put some elbow grease into it. Putting it all back together was a thought provoking process, but with sufficient time "and a lil help from a friend" it was back together and sealing properly. While I was doing this, I replaced the master cylinder too. It seems that the brake seal people in Port Elizabeth cant help with service items fro the regulator. Nonetheless, with this board of extreme knowledge and willingness to help, I overcame. Thanks guys!
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Post by Charles on Jul 9, 2013 20:16:10 GMT 2
Hi Dylan
I opened it in the beginning of the year. The one part in it is broken. It was rusted solid. When I saw its broken I just put it back together. That was one of the last bricks in the wall for me. That's when I decided to trade her for the BMW.
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dylan
New Niva Petrol Head
if only my budget stretched as far as my imagination with regard to this Lada of mine
Posts: 20
Location: Eastern Cape
Town: Port Elizabeth
Registered: Jul 4, 2013 20:05:29 GMT 2
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Post by dylan on Jul 9, 2013 20:19:11 GMT 2
Hey Charles, I saw it was broken. I actually forgot to say I had a donor one from my friend before he got rid of his one as scrap (bought in illegally many many years ago)
Funny enough, I had a 330i e46 BMW, and sold it for this Lada. It also paid form my dive training in Sodwana Bay and accomodation etc etc etc.
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Post by Charles on Jul 9, 2013 20:25:29 GMT 2
I traded her for a BMW K100RS motorcycle.
Did you do your PADI? Whenever you are in J-Bay you should give me a shout and we can go have a beer.
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dylan
New Niva Petrol Head
if only my budget stretched as far as my imagination with regard to this Lada of mine
Posts: 20
Location: Eastern Cape
Town: Port Elizabeth
Registered: Jul 4, 2013 20:05:29 GMT 2
Karma: Exalt | Smite
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Post by dylan on Jul 9, 2013 20:30:03 GMT 2
Yeah I went through Padi. I was planning on getting my Divemasters, and my girlfriend was to get her instructors. When the gearbox gave up in Durban, it tooked a huge chunk of my course money, so i didnt get my divemasters. She however, got her Instructors. Strange enough (Again) she is in Jbay now for Profest. I have meetings and asmin sh*t to do here so couldn't go through.
Epic bike Charles, I used to work at Xtreme Yamaha (Motorcycles) and the customers spoke highly of it!
Will give you a shout if i pop around there. I usually come once or twice a year for the shell/pro festivals.
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