One of the most common problems which inflict the 2cv is the incorrect usage of hydraulic fluids.
The types required are quite easy to define:
2cv based vehicle with front disc brakes - fluid must be Citroen LHM.
2cv based vehicle with front drum brakes - fluid must be conventional DOT 3 or DOT 4, i.e. conventional brake fluid.
If the wrong fluid is used in either case the result will be that the hydraulic seals soften & swell, either brakes will seize or become ineffectual.
Master cylinder, LHM, tandem, 2cv6 June 1981 until end, Dyane 6 January 1978 until end. 17.5mm bore, M8X1.25 unions.
Part Number: 57129
£67.39
(£56.16 ex. VAT)
Master cylinder, tandem, NOT LHM, drum brake only, 2cv 7/76>6/81, Dyane 7/76>7/77. 20.6mm bore.
Part Number: 57119
£58.80
(£49.00 ex. VAT)
Master cylinder, 2cv4/6, Dyane4/6, June 1970 to March 1978 (some models). Dot 4 fluid.
Part Number: 05550
£45.50
(£37.92 ex. VAT)
Master cylinder, 2cv4/6,AK, 1969 to 1970, Mehari 1969 to1972, 2 x outlet M9x1.25 (for 4.5mm pipe). See description details
Part Number: 725
£48.90
(£40.75 ex. VAT)
Foam rubber gasket, self adhesive, fits between master cylinder and bulkhead, always renew this.
Part Number: AM453211
£5.87
(£4.89 ex. VAT)
Bolt, M9x1.25, length 65mm, 36mm threaded, to mount brake master cylinder, 2 needed.
Part Number: 23836019
£9.00
(£7.50 ex. VAT)
Flared dowel tube spacer sleeve bush to locate master cylinder on brake pedal bracket assembly.
Part Number: AY453205
£6.24
(£5.20 ex. VAT)
Push rod, between pedal and master cylinder, 105mm length. This rod is fitted mostly on 'early' overhead master cylinders wher the rod inserts into the cylinder by about 20mm.
Part Number: AY45373B
£11.16
(£9.30 ex. VAT)
Push rod, between pedal and master cylinder, 88mm length. This is the most common length and is fitted on 'most' 2cv types 1970 onward.
Part Number: 5438258
£16.01
(£13.34 ex. VAT)
Master cylinder, LHM, tandem, DYANE 6 ONLY 07/1977 until 12/1977. 17.5mm bore, M10x1.00 unions. SEE NOTES
Part Number: 131458B
£83.96
(£69.97 ex. VAT)