Changes to the cab should not impair the function and clearance of assemblies and control equipment, or the strength of supporting structures. If an installation is fitted above the cab, the permissible centre of gravity position and the permissible front axle load must be observed.

Roof loads/roof load carriers:

Panel van and Kombi vehicles:

• Maximum 300 kg (vehicles with high roof 150 kg; none on super high roof) with equal load distribution across entire roof surface.
• An anti-roll bar must be installed on the front axle.
• Provision is made on each side of the roof for 6 attachment holes.

For mounting of roof carrier systems, the Crafter can be equipped with C-rails (PR no. 3S4).

1 C-rail roof carrier

Vehicles with single or crew cab:

Maximum 100 kg with equal load distribution across entire roof surface.

Warning: Note on attachment refers only to panel van and Kombi. 

Roof height increase (synthetic roof):

• Install anti-roll bar on front axle.

• If roof skin and roof braces are cut through and no section frame is possible around the circumference, additional roof braces are necessary.
  
  Quantity:
  4 bracing members on wheelbase 3250 mm
  5 bracing members on wheelbase 3665 mm
  6 bracing members on wheelbase 4325 mm
  Location:
  1. Behind cab doors (B-pillars)
  2. To centre of sliding door (between B and C-pillar)
  3. To centre of vehicle behind sliding door (C-pillar)
  4. to 6. Between C-pillar and rear pillar

• Connection of the bracing members to the sidewalls must be in such a way that a positive connection is assured (rigid connection of bracing member and roof frame). The new roof structure must meet the same strength as the standard roof. Refer to the following table for the minimum required inertia moment Ix of the roof braces.

• In the event of deviations, a permit is required from the department responsible

The details were based on an E module of the synthetic roof of 7,000 N/mm 2 and a wall thickness of 4 m.

Notes:

• Synthetic roofs have only restricted suitability for installation of roof hatches.
• The roof load is limited.

Elevating roof

• For installation of an elevating roof, 2/3 of the original roof surface must remain in place. 
• Do not remove cross members or structurally supporting parts.

Air guides:
Air guides on the cab roof must be attached at the securing holes in the roof (observe dynamic load).