Keith W,
Yes, at some point during the production run of the QL series, IH went back to the internal wet brake from the 2/3 series and was continued into the 82 series. Using the parts look up link above you will see that 1000's came with either the external caliber brakes on the axles or the internal brake. However, I didn't see a serial number break of where they changed but I didn't dig that deep. It most likely occured during the last year of QL production as IH made several changes (like auto dump valves for hydros, internal brakes, improved steering wheel)in the QL series that were carried over to the 82 series.
Yes, at some point during the production run of the QL series, IH went back to the internal wet brake from the 2/3 series and was continued into the 82 series. Using the parts look up link above you will see that 1000's came with either the external caliber brakes on the axles or the internal brake. However, I didn't see a serial number break of where they changed but I didn't dig that deep. It most likely occured during the last year of QL production as IH made several changes (like auto dump valves for hydros, internal brakes, improved steering wheel)in the QL series that were carried over to the 82 series.