Changing And Mounting
The secure seating of the wheel bolts and the wheels is only ensured if the instructions and checks below are followed.
-- Make sure the contact surfaces -arrows- on the brake disc are free from corrosion and dirt.
-- Make sure the contact surfaces -arrow- on the brake disc center seat are free of corrosion and dirt.
-- Make sure the contact surface -arrow- on the wheel inner side (rim) as well as the central seat in the rim is free of corrosion and dirt.
-- The spherical caps * in the wheel bolt openings and the wheel bolt threads must likewise be free of corrosion, dirt, oil or grease.
* The spherical cap is the curved surface of a section of a sphere.
-- Check whether the wheel bolts can be easily screwed in by hand. The threads of the wheel bolts must not touch the holes in the brake disc -arrow-.
If the thread of the wheel bolt touches the hole -arrow-, turn the brake disc relative to the wheel accordingly.
If necessary, clean any dirt and corrosion, oil or grease off the surfaces and thread in the wheel hub and/or wheel bolts.
Heavily corroded, difficult to turn or damaged wheel bolts must be replaced.
Wheel Mounting
-- Apply corrosion protection to the wheel centering seat. Refer to [For engine(s) CNLA, CBTA, CPRA, CPKA, CPLA, CJAA, CBUA, CPPA, CCTA, CBPA, CBFA] General Information .
- When mounting a wheel, tighten all wheel bolts uniformly by hand.
- Tighten the wheel bolts diagonally to 30 Nm.
- Place the vehicle on the floor and tighten all of the wheel bolts in a diagonal sequence to the specification with a torque wrench. Refer to [For engine(s) CNLA, CBTA, CPRA, CPKA, CPLA, CJAA, CBUA, CPPA, CCTA, CBPA, CBFA] Specifications .
Never use an impact wrench to install the wheel bolts!