Vocational Model 4000 EVS 4000 HS 4000 MH 4000 RDS 4000 SP 4000 TRV 4500 EVS 4500 HS 4500 RDS 4500 SP 4700 EVS 4700 RDS 4700 SP 4800 EVS 4800 SP B 500 CR/WR Maximum Forward Ranges PTO CR 6 CR CR CR CR CR WR WR WR WR WRC WRC WRC WRC WRC CR 6 6 6 6 6 6 6 6 6 7 7 7 7 7 6 1—OLS not available with 7-speed models. Retarder Deep Sump Shallow Sump OLS STD OPT STD OPT STD N/A OPT STD STD OPT STD N/A STD STD STD STD STD STD STD OPT OPT OPT OPT OPT OPT OPT OPT OPT OPT OPT OPT OPT OPT OPT OPT STD STD STD STD STD STD STD STD STD STD STD STD STD STD STD N/A OPT N/A OPT N/A OPT N/A N/A OPT OPT N/A N/A OPT N/A OPT STD STD STD STD STD STD STD STD STD N/A 1 N/A 1 N/A 1 N/A 1 N/A 1 STD