Vintage manual for the Mack END-405 diesel truck engine which was introduced in 1939/1940. This manual is undated but likely dates to about that time. Book is actually a heavy cardstock binder, with brass tabs to hold individual pages and allow them to be changed out if necessary. Covers things like maintenance and troubleshooting and has numerous black and white photos and diagrams.
Vintage find, please see all photos. This appears to be a shop copy with some water stains and wear. Cover has small tears and missing pieces where the cardstock was wider than the pages inside. Some pages have notes and strikeouts. Still in great shape for use for repairs and maintenance.
