Importance

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Abstract

A forward and reverse power shift transmission (10) with an enclosed gear se (38) and a torque converter housing (44) is adapted to be connected to an engine bell housing (12). An input shaft (46), a lay shaft (146) an output shaft 36 and a pump driveshaft (280) are rotatably journaled in the gear case. A clutch cylinder and gear (78) secured to the input shaft is in mesh with a clutch cylinder and gear (178) secured to the lay shaft 146. A clutch gear (100) rotatably mounted on the input shaft (46) and a clutch gear (200) rotatably mounted on the lay shaft (146) are both in mesh with an output gear 240 on the output shaft 36 and in the front portion of the gear case (38). A pump drive gear (248) is journaled on the input shaft (46) and is adapted to be driven by the torque converter housing (262). The pump drive gear (248) is in mesh with a driven pump gear (290) on the pump drive shaft. The pump drive shaft (280) drives a lubrication pump (291) and is also a power take off. The input shaft (46) and the lay shaft (146) carry multiple disk clutches that lock the clutch gears (100 or 200) to the input or lay shafts when engaged. Switches (484) provide a warning when the clutch disk assemblies (112 or 212) and the clutch dics (114 or 214) are worn. A catch basin (334) on the outside of the gear case (38) catches any lubricant that is released while removing the external filter (326). A brake and assembly (336) encircles the output shaft 36; inside the gear case and brakes the output shaft when engaged.

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First Claim