SECTION III. OIL PUMPS

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Figure 8-4. & Figure 8-5. Gear-Type Oil Pump.

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TM-9-8000 Principles of Automotive Vehicles Manual

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Figure 8-6. Oil Pickup and Strainer

TM 9-8000

SECTION III. OIL PUMPS

the oil pickup tube. The oil pickup tube then is threaded

8-9. General. Oil pumps are mounted either inside or

directly into the pump inlet or may attach to the pump by

outside of the crankcase, depending on the design of the

a bolted flange. A fixed-type strainer, like the one

engine. They usually are mounted so that they can be

described, is located so that a constant supply of oil will

driven by a worm or spiral gear directly from the

be assured. Some automotive engines use a pickup that

camshaft. Oil pumps generally are of the gear or the

is hinged from the oil pump. The pickup is designed to

rotor type.

float on top of the oil, thus preventing sediment from

being drawn into the oiling system.

8-10. Rotor-Type Oil Pump (Fig. 8-4). Refer to

paragraph 5-21 for the operation of a gear-type oil pump.

8-13. Oil Filters.

8-11. Gear-Type Oil Pump (Fig. 8-5). Refer to

a. General (Fig. 8-7). The oil filter removes most

paragraph 5-23 for the operation of a gear-type oil pump.

of the Impurities that have been picked up by the oil as it

is circulated through the engine.

8-12. Oil Strainer and Pickup (Fig. 8-6). Most

manufacture of in-line and V-type engines place at least

one oil strainer or screen in the lubrication system. The

screen usually Is a fine mesh bronze screen that is

located in the oil pump on the end of

Change 1 8-6.1(8-6.2 Blank)