SAFETY
General Maintenance Instructions
4
 MA-04.0-002
05 Rev. 10/08
14. Modifications and additions which affect capacity 
and safe truck operation shall not be performed by 
the customer or user without manufacturers prior 
written approval. Capacity, operation and mainte-
nance plates or decals shall be changed accord-
ingly.
– Adding electrical devices (radio, terminal, 
lights, etc.) or changing existing components or 
wiring can affect truck operation and could cause 
an accident. Contact authorized Crown personnel 
before adding to or changing the electrical system 
in any way.
– For EE rated trucks, adding electrical devices 
could cause a fire or explosion, as well as void the 
EE rating. Written approval must be obtained from 
Crown prior to adding electrical device(s). Prior to 
use, inspection of installed device(s) must be per-
formed by an appropriate nationally recognized 
testing laboratory (i.e. Underwriters Laboratories 
Inc) or the Authority Having Jurisdiction (see NFPA 
505).
15. Care shall be taken to assure that all replacement 
parts are interchangeable with the original parts 
and of equal quality to that provided in the original 
equipment.
16. Be sure that any equipment added to the truck (ter-
minal, fan, clipboard, etc.) is positioned so that it 
does not block your vision or interfere with safe and 
efficient operation of the truck.
For further information pertaining to operating and
maintenance procedures:
• All trucks except Series B and Tow Tractors, refer 
to current ASME B56.1.
• Series B trucks, refer to current ASME B56.10.
• Tow Tractors, refer to current ASME B56.9.
Crown 1976 PF 2821-2 Rev. 10/08