Figure 4-13. Removing Oil Pump

TM 55-4920-335-14

Figure 4-13. Removing Oil Pump

Figure 4-15. Bearing Caps

locks, seats, springs, valves and clean these as well as ports

and guides of all carbon and gum deposits. Tag each valve for

reassembly.

Figure 4-14. Removing Oil Pump Drive Shaft

(7) Remove valve tappet inspection plate and

compress valve springs with a standard automotive type valve

lifter as shown in figure 4-16. If cylinder block is still attached

to engine, insert a rag in opening at bottom of valve chamber

so roto-cap and valve spring seat retaining locks do not fall into

crankcase. Remove roto-caps, valve spring seat retaining

Figure 4-16. Removing Valves

4-10