NUT-LUG 2806810 - Caterpillar

Illustration 1 g00492070
(1) Pump drive (2) Pump drive shaft which is located under the guard
Illustration 2 g00350812
(3) Yoke assembly (4) Housing (5) Bearings (6) Drive gear (7) Cage (8) Idler gear (9) Shims (10) Shims (11) Shaft (12) Bearings (13) Shims (14) Driven gear (15) Cage (16) BearingsPump drive (1) is fastened to the inner right side of the main frame directly behind the flywheel housing of the engine. The accessory drive gear in the flywheel housing drives pump drive shaft (2). Pump drive shaft (2) is connected to yoke assembly (3) .Splines connect yoke assembly (3) to drive gear (6). Drive gear (6) turns idler gear (8) which turns driven gear (14) .Shims (10) are used to adjust the end play of drive gear (6). Shims (9) are used to adjust the end play of idler gear (8). Shims (13) are used to adjust the end play of driven gear (14) .Three pumps are driven by pump drive (1). The hoist and rear brake cooling gear pump is fastened to cage (7). The pump is driven by drive gear (6). The four section oil pump for the transmission is fastened to cage (15). The single section hoist pump is fastened opposite the pump for the transmission. The single section hoist pump is fastened directly to housing (4). Driven gear (14) drives both the hoist pump and the transmission gear pump.Lubrication of the pump drive is provided by oil from the front brake cooling oil circuit. The oil comes from the torque converter outlet relief valve. The oil is sprayed on drive gear (6). Holes in housing (4) will send oil to each bearing. An oil level is kept in housing (4) so that the teeth on driven gear (14) are in oil. The gears will throw oil in the housing. Extra oil in housing (4) goes to the torque converter housing.