... 358Air filter type/Paper air filter 9Transmission systemtransmission/Spur gear, splash lubricated, 5 forward and 4 reverse speeds.Bevel ... gear/Helical bevel gear, splash lubricated. Steering clutch/Dry, multiple disc hand ... brake/Dry, band brake, foot-actuated. Final drive/Spur gear, double reduction, splash lubricated. Pengpu 140hp PD140s bulldozer