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| Illustration 1 | g00485263 |
Oil Pump (1) Bolts (2) Dowels (3) Gear (4) Bearings (four) (5) Shaft (6) Passage (7) Seal (8) Opening (9) Seal (10) Passage (11) Gear (12) Drive shaft (13) Manifold (14) Bolts (15) Seal (two) (16) Body (17) Cover | |
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| Illustration 2 | g00485265 |
Location of the Oil Pump | |
The pump is a single-section gear pump. The pump is on the flywheel end of the engine between the implement pump and the brake and differential lock pump.
The following components are the main components of the pump: cover (17), body (16), manifold (13), drive shaft (12), gear (11), shaft (5) and gear (3) .
Drive shaft (12) is connected to a gear on the engine. Drive shaft (12) is turned through the gear by the engine. Drive shaft (12) turns gear (11). Gear (11) turns gear (3) .
In operation, oil comes from the screen and flows into opening (8) in manifold (13). The oil flows through opening (8) to the lower part of body (16). The oil fills the spaces between the teeth of gears (3) and (11). As the gears turn, oil is pushed from body (16). The oil flows through a passage in manifold (13) to an oil line. The oil then flows to the filter.
When the engine is not running, air may be present in the pump. When the engine is started, a line on the outlet side of the pump allows the air to flow from the pump. This prevents air from getting into the system. After all the air is out of the pump, an orifice in the line allows a specific amount of oil to flow to the lubrication circuit.