Rear window, remove, install or replace - L69
Note: This document
describes the procedure for removing the glass from the rear window
using the glass removal system BO-46974 .
As a supplement to the existing video VT 54, individual steps will
be shown for removing the rear window glass without destroying
it.
To remove the glass without destroying it, tool BO-46974 is recommended. For further information, see
the video VT 54.
Warning: Before
beginning any work, put on work gloves and protective goggles from
tool set BO-46974 in order to prevent
injuries to the eyes and hands.
Remove
3. |
Remove auxiliary brake light
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4. |
Disconnect heated rear window
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Disconnect 2x wiring harness plug
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Secure in place with fabric tape
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5. |
Measure out rear window
Note: Measure the
diagonal length of the rear window and cut the cutting wire to four
times this length (approx. 5560 mm). The circumference of the wire
roll is approximately 1 metre.
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6. |
Heat the awl with a suitable tool
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7. |
Stick the awl through the adhesive bed in the area of the lower
C-pillar (1)
Note: Ensure that the
rear window is not damaged in the process. Otherwise, stress cracks
could form in the rear window. Mask off the area with fabric tape
(1)
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8. |
Pull the wire through
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Thread both ends of the cutting wire (3) in the bores of the
piercing awl (2) and bend them.
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Use the piercing awl to pull the cutting wire to the centre of
the rear window
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9. |
Lay the wire under the rear window all the way round
Note: The cutting wire
(1) should be rolled in beneath the rubber window seal (2) at the
rear window
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Pull the remaining wire into the interior
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10. |
Place the winch with 2 winding heads in the vehicle
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Position the winch vertically at the same height as the
C-pillar (2)
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Attach the cutting wire to the winch (1)
Note: Check that the
cutting wire is laid correctly at the winch deflection roller
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Insert transfer ratchet and pre-tension cutting wire
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11. |
Cut out rear window
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Cut out the rear window until the cutting wire is level with
the winch
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Arrow shows the path taken by the cutting wire
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12. |
Place the winch with 2 winding heads in the vehicle
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Position the winch (2) in the area of the roof frame
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Insert transfer ratchet and pre-tension cutting wire (1)
Note: Check that the
cutting wire is laid correctly at the winch deflection roller
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13. |
Cut out rear window
Note: Increased cutting
effort is required in the area of the rear window radius.
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Cut out the rear window until the cutting wire is level with
the winch
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Arrow shows the path taken by the cutting wire
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14. |
Place the winch with 2 winding heads in the vehicle
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Position winch in the middle area of rear window (2)
Note: Check that the
cutting wire is laid correctly at the winch deflection roller
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Insert transfer ratchet and pre-tension cutting wire (1)
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15. |
Cut out rear window
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Cut out the rear window until the cutting wire is level with
the winch
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Arrow shows the path taken by the cutting wire
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16. |
Position the winch with one winding head in the vehicle
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The winch with 2 winding heads (1) stays in the position
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Position winch with one winding head (2) in the area of the
lower C-pillar
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Thread the second end of the wire (3)
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Insert transfer ratchet and pre-tension cutting wire
Note: Check that the
cutting wire is laid correctly at the winch deflection roller
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17. |
Cut out rear window
Note: Increased cutting
effort is required in the area of the rear window radius.
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Cut out the rear window until the cutting wire is level with
the winch
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Arrow shows the path taken by the cutting wire
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18. |
Position the winch with one winding head in the vehicle
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Position the winch with one winding head (1) in the upper area
of the rear window
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Insert transfer ratchet and pre-tension cutting wire (2)
Note: Check that the
cutting wire is laid correctly at the winch deflection roller
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19. |
Cut out rear window
Note: Increased cutting
effort is required in the area of the rear window radius.
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Cut out the rear window until the cutting wire is level with
the winch
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Arrow shows the path taken by the cutting wire
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20. |
Position the winch with one winding head in the vehicle
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Position winch with one winding head (1) next to winch with two
winding heads so that the cutting wire crosses (2)
Note: Check that the
cutting wire is laid correctly at the winch deflection roller
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Insert transfer ratchet and pre-tension cutting wire
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21. |
Cut out rear window
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Cut out the rear window until the cutting wire (2) has cut
through the adhesive bed completely
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Arrow shows the path taken by the cutting wire
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24. |
Remove rear window
Note: 2nd mechanic
required!
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Lift rear window out of frame with MKM-641 and position on holding device
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25. |
Remove adhesive bead from vehicle
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Using the tool supplied, remove the adhesive bead down to a
thickness of approx. 1 mm
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26. |
Repair any paint damage
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Using a touch-up pen to match the colour of the vehicle, repair
any paint damage
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27. |
If the rear window rubber is damaged, replace with a new
one
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28. |
Apply adhesive bead to rear window
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Using the tool supplied, remove the adhesive bead down to a
thickness of approx. 1 mm
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Install
29. |
Apply adhesive bead
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Cut into the tip of the cartridge in such a way that a bead of
adhesive approx. 13 mm thick is produced
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30. |
Insert rear window
Note: Place rear window
at the upper area and lower down
2nd mechanic required!
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Insert rear window with MKM-641
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Secure rear window in position with fabric tape
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31. |
Connect heated rear window wiring harness plug
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Connect 2x wiring harness plugs
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32. |
Install auxiliary brake light
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35. |
Program volatile memories
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