MAINTENANCE
INFORMATION

i

DATE : 10
SUBJECT :

Revision: A

June 2020

MI20-84A
SECTION : 18 BODY

FRONT PANEL, CENTRAL REINFORCEMENT
INSTALLATION

Material: Coolant was 20358716, is 685241.

09-03-2020

IMPORTANT NOTICE
This modification is recommended by Prevost to increase your vehicle's performance. Note that no
reimbursement will be awarded for carrying out this modification.

APPLICATION

Model
Volvo 9700
Model Year : 2008 - 2019

DESCRIPTION
Windshield center pillar reinforcement plate installation to avoid cracks at glass.

MATERIAL
Include the following parts:

Part No.

23811261

Description

L-PROFILE, DASHBOARD, SUPPORT

Qty
1

685124

SIMSON ISR 70-03 (BLACK)

948702

CABLE TIE

A/R

949902

CABLE TIE

A/R

685241

COOLANT 50/50 PREMIX, CHEVRON DELO ELC

A/R

21133962

WINDSHIELD SEALING MOLDING

250 ml

1

NOTE
Material can be obtained through regular channels.

Writer: Ing. RCBV

MI20-84
Page 2 / 17

PROCEDURE
DANGER
Park vehicle safely, apply parking brake, stop engine. In the battery box, set the battery cut-off switch
to the OFF position prior to working on the vehicle.
Lock out & Tag out (LOTO) must be performed during set-up, maintenance or repair activities. Refer to
your local procedure for detailed information regarding the control of hazardous energy.
1. Open engine compartment.

2. Perform A/C system recovery. See service
operation: 87406-3 Refrigerant, draining;
published in IMPACT, as a reference.
3. Remove wipers arms with its wipers blades.
See the service operation 36384–2
Windscreen wiper arm, replace; published in
IMPACT as a reference.

4. Remove dashboard upper cover by unscrew
its 8 fixing screws placed around at the cover
contour.

Writer: Ing. RCBV

MI20-84
Page 3 / 17

5. Remove the windshield (both pieces),
according service operation: 84302-2
Windscreen, replace. Published in IMPACT.
Note: This operation is necessary to avoid
crack the windshield pieces, during
reinforcement installation.

6. Remove fire extinguisher.

7. Remove guide panel molding.
Note: For removal of the molding, slide it up
to unpin the molding from its fixation.

8. Remove guide panel.
Note: For removal, unscrew the 9 fixing
screws placed around at the panel contour.

9. Remove defroster air duct.
Note: For removal, unscrew the 10 fixing
screws placed at all around the duct.

Writer: Ing. RCBV

MI20-84
Page 4 / 17

10. Disconnect defroster vent hoses.
Note: For remove, unscrew each hose
clamps and remove cable ties as necessary.

11. Remove defroster air distribution duct box.
Note: For removal, unscrew the 12 fixing
screws placed at all around the distribution
box.

12. Unplug defroster electrical harness.

13. Remove
complete
assembly.

dashboard

panel

14. Open front hatch.

15. Remove defroster compartment front cover
plate.
Note: For remove, unhooking the locking
pins that secure the cover at the both sides
to defroster unit compartment and turn
swivel clamps.

Writer: Ing. RCBV

MI20-84
Page 5 / 17

16. Unplug the
harnesses.

defroster

unit

electrical

17. Pinch off hoses so no extra coolant is lost.
Use two 1158957 PLIERS, for pinch off
hoses.

18. Unscrew defroster heater coil bleed valve.

19. Drain coolant from defroster heater coil.
Note: Place a tray for collect the coolant
drained.

20. Disconnect defroster coolant hoses.

Writer: Ing. RCBV

MI20-84
Page 6 / 17

21. Loose defroster
connections.

A/C

system

hoses

Note: Do not remove expansion valve from
the defroster unit, to avoid replace sealing Orings with a new ones.

22. Remove defroster expansion valve lower
connections lock plate.
Note: Do not remove expansion valve from
the defroster unit, to avoid replace sealing Orings with a new ones.

23. Plug off A/C system hoses.
Note: Do not remove expansion valve from
the defroster unit, to avoid replace sealing Orings with a new ones.
Install a caps at the end of both hoses so dirt
does not contaminate the A/C system.
24. Secure defroster unit.
Note: Place a wedge between the defroster
unit lower side and at the bottom of its
installation compartment, so that the
defroster unit does not fall at the moment of
disassembling the air distribution box,
because the fixing screws simultaneously
join both parts.
25. Remove defroster air distribution box.
Note: For removal, unscrew the 4 fixing
screws, placed at the both sides of air
distribution box.

26. Remove defroster unit completely.
Note: Remove the wedges that was placed
between the defroster unit and the bottom of
the compartment.

Writer: Ing. RCBV

MI20-84
Page 7 / 17

27. Install
reinforcement
L-profile
P/N:
23811261. Welded at center and under front
plate frame according separately assembly
drawing document: 22314124 Frame front
section DOT, see annex on this service
document as a reference.
Note: Entrance through space exists when
remove defroster unit, in order to weld the
reinforcing L-profile under structural plate of
the front frame.

See annex for more information about
welding application.

CAUTION: Before weld, you must
disconnect all vehicle control modules and
batteries. Failure to do this, can result in
electrical components damage.
28. Apply adhesive P/N: 685124, between at
reinforcement plate seating surface side and
front panel seating surface, as a reference
see: 21242039 Front panel assembly,
drawing attached on annex in this service
document.
For adhesive application, use: 88890051
LUBRICATING GUN.

29. Press the front panel to the reinforcement
plate using three hand 8 in C-frame press
tools distributed and keep pressure to secure
glued process on both parts.
Note: Keep C-frame press tools for over 2
hours as minimum for secure gluing process
at both parts with environment temperatures
between 41ºF to 95°F.
See annex for more information about
placing C-frame press tools.

30. Install dashboard panel assembly.

Writer: Ing. RCBV

MI20-84
Page 8 / 17

31. Install the defroster unit on the vehicle.
Note: For install the new defroster complete
unit, place a wedge between the defroster