Green’s Dictionary of Slang

bang up v.3

[bang v.1 (1)]

to injure or damage.

[US]C.R. Bond 28 Feb. in A Flying Tiger’s Diary (1984) 120: He got one propeller tip and banged up one wheel.
[US]F. Harvey Air War – Vietnam 14: I’d hang two extra radios round my neck just in case I banged one up in my landing.
[US]M. Baker Nam (1982) 124: The crash had generally banged me up. I was spitting blood for a month at least.
[US]J. Stahl Plainclothes Naked (2002) 272: Give us something on [...] that holy man you guys banged up, huh?