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| Illustration 1 | g00350792 |
(1) Pump drive (2) Pump drive shaft which is located under the guard | |
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| 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) Bearings | |
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| Illustration 3 | g00530928 |
(1) Pump drive (3) Yoke assembly (17) Hoist and front brake cooling gear pump (18) Steering piston pump (19) Rear brake cooling and parking brake release gear pump | |
Pump 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 the pump drive. Hoist and front brake cooling gear pump (17) is fastened to cage (7). The pump is driven by drive gear (6). Rear brake cooling and parking brake release gear pump (19) is fastened to cage (15). Steering piston pump (18) is fastened directly to housing (4). Steering piston pump (18) is located across from rear brake cooling and parking brake release gear pump (19). Driven gear (14) drives both steering piston pump (18) and rear brake cooling and parking brake release gear pump (19) .
Lubrication of the pump drive is provided by oil from the torque converter charging pump section. 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.