Brake Master cylinder replacement....

[m3456y]

Can this be done without removing the fuel tank?

[Q-Dog]

Yes.
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Brian

'69 Dune Buggy
'69 Beetle Convertible
'70 Beetle

[Cusser]

Yes. I'd recommend jack stands and remove the front driver side wheel.

Brake master cylinder hints
Hints (first get a repair manual):
1. Use a baster or similar to pull brake fluid out of the reservoir before starting.
2. Use an 11mm flare wrench for initial loosening and final tightening of the nuts on the brake lines.
3. Pull brake lines back GENTLY, don't bend.
4. Leave mounting bolts in place in the pan when loosening (socket and extension), so the spacers don't fall in and get lost forever. If you do need to make them. They are 1.088 inches long, OD is 0.474 inches, ID is 0.315 inches.
5. Bench bleed the new MC before installing; yeah, some fluid will drip out, enough will stay in.
6. Thread in the line nuts before mounting the MC, so there's a little wiggle room to thread them in several turns, by hand.
7. Have a helper hold/maneuver the MC into position so you can get the two mounting bolts installed.
8. Use a flare wrench final tightening of the nuts on the brake lines.
9. Adjust brakes manually with a screwdriver, all four wheels.
10. Bleed all four wheel cylinders.
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1970 VW (owned since 1972) and 1971 VW Convertible (owned since 1976), second owner of each. The '71 now has the 1835 engine, swapped from the '70. Second owner of each. 1988 Mazda B2200 truck, 1998 Frontier, 2014 Yukon, 2004 Frontier King Cab. All manual transmission except for the Yukon. http://www.thesamba.com/vw/forum/album_page.php?pic_id=335294 http://www.thesamba.com/vw/forum/album_page.php?pic_id=335297

[gt1953]

I can be done with one person but two or an assistant is way better. Be aware of the sleeves that are in the fire wall. Another words don't remove the bolts all of the way as you will loose the sleeves. Wish I had an exploded view.
_________________
Volkswagen: We tune what we drive.
Numbers Matching VW's are getting harder to find. Source out the most Stock vehicle and keep that way. You will be glad you did.

72 type 1
72 Squareback
({59 Euro bug, 62, 63, 67, 68, 69, 73 type ones 68 & 69 type two, 68 Ghia all sold})

[finster]

here's one. part 17 is the sleeve/spacer - correct orientaion of bolt 18 is at bottom of page.

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"we're here on Earth to fart around" kurt vonnegut

nothing lasts, nothing is finished, and nothing is perfect...

[wayne1230cars]

[m3456y]

[VW_Jimbo]

[Rayfield]

Thanks for the tips, doing this shortly on my project car!

I don't know for a fact that the MC is bad, but it's been sitting for 20 years, so doing it for safety's sake.

[Cusser]

[herbie1200]

Very important: if the new master cylinder is without the rubber grommet where the hose from reservoir enters, insert the grommet BEFORE to put the master cylinder in place.

Is very difficult to insert the grommet in place when master cylinder is in position and the fuel tank is still there.

[Zundfolge1432]