Assembly instruction
Status: 03.05.2022
Mercedes E-Class
W124 Doorboard
Art. No. 75170
Jehnert Sound Design I Im Michelreis 14 I 72124 Pliezhausen I phone: 07127-93457-0 I [email protected] I www.jehnert.de
4. insulation of the door panel
Measures against vibration noise:
- Cover the back of the door trim with insulating fl eece (Order No. 27000) or foam,
(see illustration above) or
- Stabilize the rear side of the door trim with stiff ening compound (GRP fi ber fi ller or similar).
IMPORTANT: Make sure to leave cutouts for door airbag and speakers free!
- Apply self-adhesive bitumen mats / tar mats to the *inside rear side of the door panel (=outer door
skin). (see example below).
- By tapping the vehicle door, vibration noises from door mechanism parts
(e.g. Bowden cables etc.) and wiring harnesses and cover them with foam / felt, Foam rubber or
similar.
- Cut off protruding cable ties (rattling noises!).
- Stick felt or foam under the original wiring harness.
Key Recommendation:
Due to the use of 2 x 165mm woofer / per side, the oscillations of the basses cause vibrations that
can lead to rattling noises in the car door.
ATTENTION / Danger !!!
Do not place any insulating material
behind side airbags (Fig. „B“)
Front
Door panel inside
*Outer door panel =
Rear door panel inside
IMPORTANT:
No damping material behind
- loudspeakers
- Door releases
- Make the hole for the fastening clip
(Fig. „A“)
Fig.: Example of a vehicle door - insulation with bitumen mats / tar mats
Rain protection fi lm
