Z Series E86 Z4 3.0Si (N52) COUPE
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Cementing of mirror base
Repair set for cementing of mirror base (Sourcing Reference: BMW Parts Service)
Primer XW 775 (Sourcing Reference: BMW Parts Service)
1.1 Cement at room temperature and make sure that, in cold weather, the window glass and base are brought to room
temperature in the workshop long enough to prevent moisture forming on the surface.
1.2 Mark location of the mirror mount on the outside of the windshield.
Scratch off cement residue on glass and base with a sharp tool.
1.3 Clean cement area on window and base with clean non-fluffing cloth and alcohol/cetone and allow to dry!
Never use paint thinners!
Apply colorless, diluted primer to surface of windshield intended for cementing with help of cotton buds (Q-Tips or
Specified ventilation time at least 10 minutes, maximum 1 hour
3.1 Mixing Cement
Trim off sealing tips on containers of cement and hardener using a knife.
Make sure that both openings are equal in size, as otherwise there would be mistakes in mixing.
The sealing cap for subsequent plugging of the double injector is located between both pistons of the injector.
Break off sealing cap.
The required amount of cement and hardener is removed by applying light pressure on the pistons.
The mixing ratio for cement and hardener is 1 : 1 (weight and volume). It is important that the same volumes of
cement and hardener are removed (increase size of openings if necessary).
Both components react chemically with each other. Thorough, intensive and homogenous mixing is a requirement
for this reaction and for the quality of cementing.
Consequently both components must be mixed in such a way that there is a uniform, ream-free color mixture.
At 20 ... 25
C the mix can be processed after approx. 5 ... 10 minutes (pot time).
Apply thin (approx. 0.5 mm), uniform coat of cement on base with spatula and press base onto glass in such a way
that cement obtains good contact with windshield across the entire surface area.
The temperature for the hardening process should not be lower than +18
3.3 Fixing Bonded Parts
Epoxide resin cement does not have an initial strength property. It is therefore necessary to fix all bonded parts
(cement tape or similar). The joining and fixing of bonded parts must be accomplished within the potlife). Check
that the arresting button is located correctly on the mirror base to ensure that the mirror, when it is attached, is
RA Cementing of mirror base
BMW AG - TIS
Issue status (12/2007) Valid only until next DVD is issued
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