TM 10-3930-669-20 Section III.  PRINCIPLES OF OPERATION 1-12. POWER TRAIN. The forklift is powered by an air-cooled diesel engine (1) coupled directly to a semi-automatic transmission (2).  Power from the transmission is transferred to the drive axle (3) through a short drive shaft (4) with two universal joints. a. Engine. The forklift is equipped with a KHD Deutz diesel Model F4L912D/W engine rated at 60 HP (44 kilowatt) at 2,500 RPM.  This engine is air cooled. b. Transmission.       The   forklift   is   equipped   with   a   Borg   Warner   Model   PR-2   two-speed,   semi-automatic transmission.    Forward  low  range,  forward  high  range,  reverse,  and  neutral  functions  are  controlled  by  an  electric solenoid-controlled valve body.  Power is transmitted by constant-mesh helical gears and multiple-disc clutch packs. (1) The transmission control lever located on the steering column operates two switches sending voltage to the electric solenoids controlling transmission functions. (a) To select the forward position for the transmission, move the control lever to the forward position. (b) To select the reverse position for the transmission, move the control lever to the rearward position. 1-6