CHASSIS MODIFICATIONS 2-31 E URO C ARGO E URO 4 - 5 ! Since tow hooks are important to vehicle driving safety (in some countries they must be specifically certified) they must not be modified in any way. When mounting the tow hook to the cross member, the specifications of the hook manufacturer as well as the limitations imposed by current standards - such as minimum space required for the brake and electrical connections the maximum distance between the swivel hook axis and the rear edge of the body - must be respected.
Should the dimensions of the hook coupling flange not match the holes on the rear cross member of the vehicle, in some case drilling may be authorised on the cross member after mounting adequate reinforcements. 2.10.3 Increasing the Towable Weight For those vehicles which IVECO regards as suitable for towing a trailer, a request may be submitted to evaluate the possibility of authorising a towable mass exceeding that which is normally permitted. Such authorisation will include the conditions that must be complied with and, where necessary, specifications concerning modifications and work to be carried out on the vehicle.
These include possible reinforcements to the standard cross member (see Figure 2.18), the instructions for installing a reinforced cross member when available, and specificationsfor the brake system. The tow hook mustbe suitable forthe new use.Its connectingflange mustmatch thatof thecross member. To fasten the cross member to the chassis frame, preferably use flanged head nuts and bolts or hex head screws of minimum class 8.8. Use self-locking nuts. Installing a Towing Device Print 603.93.431 Base - July 2006 Revi - June 2007