British Rail Train-Crew Manual - Class 46 - Drivers Fault Finding Data
Issue Date May 1981 - BR
33056/44 Issue 3.
More information can be found here
Wikipedia - British Rail Class 46 -
Derby Sulzers Website
More Information Regarding Preserved Class 46 Locomotives can be
found on the following websites:
Preserved-Diesels - Llangollen-Diesels