Here you go mate. Gotta try to read the details of those those citations a little more :)
https://www.amazon.com/Guinness-Book-World-Records-1975/dp/0806900121
>In 1924 "Boma" a 165Lbs male chimp at the Bronx zoo, New York, recorded a right handed pull (feet braced) of 847 Lbs on a dynamometer.(the comparison given is 210Lbs for a man of the same weight). On another occasion, "Suzette" registered a pull of 1260 Lbs while in a rage (same zoo).
>A record from the USA of a 100Lbs chimp achieving a dead lift of 600 Lbs with ease sugests that, with training, a Male gorilla could raise 1800 Lbs.