OIL PUMP - TM-10-3930-607-150055

ENGINE

very careful not to scratch or gouge the sealing

2. Slide into place around the crankshaft if engine

surfaces. All dried cement or other material must be

is still assembled; or directly into the recess, if

removed from these surfaces. Check filler block contact

crankshaft is out.

faces for flatness. Replace if warped.

3. Apply a light coat of non-hardening cement to

3. The jute packing, as it is received, has a

hold the oil pan to filler block seal. (Fig. 53)

diameter approximately one-third greater than the width

of the grooves. This must be crushed in a vise, or

otherwise flattened narrow enough to be inserted in the

grooves.

4. Press it into the grooves of both the filler block

and oil guard as well as possible by hand. Then, using a

piston pin, smooth hammer handle or some other tool

with a smooth, rounded surface, iron the packing into

the groove so that it is seated firmly and expanded to

grip the sides. (Fig. 52) In its present condition the

packing is long enough to protrude from the groove at

both ends.

Figure 53.

OIL PUMP (Fig. 34)

A. GENERAL

The oil pump is assembled to the center main bearing

and held in vertical position against a machined pad by

studs. The extended portion of the body acts as a pilot,

fitting closely in a reamed hole in the main bearing web,

maintaining a definite relationship between the camshaft

and the oil pump drive shaft. A gear assembled to the

upper end of this shaft is driven by a mating gear cut on

the camshaft, and drives the oil pump gear which is

assembled to the lower end of the pump shaft.

Figure 52.

The pump shaft is carried in two bronze bushings

assembled in the cast iron housing, which is also a part

5. With a sharp knife or razor blade, cut this off

of the oil distributing system. The capacity is well in

parallel to the surface of the casting, allowing it to

excess of that required by the engine.

protrude 1/32 inch.

B. SERVICE (Fig. 54)

C. INSTALLATION

1. Note distributor rotor position before

1. Coat the outer or sealing surface of the oil guard

with a non-hardening cement.

B-18