Figure 3-11. Oil pump.

1 Drive gear

10 Lockwasher

2 Pin

11 Capscrew

3 Drive shaft

12 Screen

4 Body

13 Lockwire

5 Roll pin

14 Idler shaft

6 Valve piston

15 Pump gears

Valve spring

16 Capscrew

8 Spring retainer

17 Lockwasher

9 Cover

Figure 3-11. Oil pump.

oil pressure can be attributed to pump. To disassemble

NOTE

pump, proceed as follows:

If both oil pump and distributor are

(1) Remove suction screen retainer wire (13)

removed, as at engine overhaul. refer

and remove screen (12).

to g below for installation procedure.

(2) Remove capscrews (11) and lockwashers

(2) Remove oil pan (para 3-12).

(10) securing pump cover (9) to pump body (4), and

(3) Remove the two capscrews (16) and

remove cover.

lockwashers (17) which secure oil pump to cylinder

(3) Remove pump gears (15) and idler shaft

block. Withdraw pump from cylinder block.

(14) from pump body.

c. Disassembly.

Disassembly of oil pump

(4) Place pump assembly in position on a

advisable whenever the engine is overhauled or drop in

press

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