Jeep UNIVERSAL CJ-2A - Page 77

F4-1~4 ENGINE
E-66. Floating ()il Intake
The floating oil intake .is attached to the bottom
of the crankcase with two screws. The float and
screen causes it to.·ride, rai~e and lower with the
amount of oil in th~ pan. This prevents water or
dirt, which may M.ve accuni~lated in the bottom
of the oil pan, from circulatin,g through the engine
because
the oil is drawn horizontally from the top
FIG. 95-FLOATING OIL INTAKE AND PAN
1-0il Float
2-Gasket
3-0il :float Support
4-Screw and Lockwasher
S-Oil Pan Gasket
6-0il Pan
7-Bolt and Lockwasher
8-Drain Plug
9-Drain Plug Gasket
surface. Whenever removed,_ the float, screen, and
tube shouJd be cleaned thoroughly to remove any
accumulation . .of dirt. ,Also clean the oil pan.
Flqctuatin,g .oil pressure, ,can usually be traced to
an air leal,{ between the oil float support .and the
crankcase.
Be sure the float support flange is flat. Clean both
the flange and the crankcase surfaces thoroughly
before installing a new gasket. Be sure the retaining
screws are tight.
E-67. Oil Pump
The oil pump is located externally on the left side
of the engine. In operation oil is drawn from the
crankcase through the floating oil intake then
passes through a drilled passage in the crankcase
to the pump from which it is . forced through
drilled passages to the crankshaft and camshaft
bearings. When it is necessary to remove an oil
pump, first remove the distributor cover and note
the position of the distributor rotor so that the
pump may be reinstalled without disturbing the
ignition timing. To install the pump without dis-
turbing the timing, the pump gear must be cor-
rectly meshed with the camshaft driving gear to
allow engagement of the key on the distributor
shaft with the pump shaft slot, without changing
the po'sition of the distributor rotor. Distributor
can be installed only in one position as the slot and
driving key are machined off-center.
The oil pump consists of an inner and outer rotor
within the pump body. An oil relief valve is
mounted in the pump body which controls the oil
FIG. 96-QIL PUMP
76
1-Cover Screw
2-Cover
3-Cover Gasket
4-Shaft and Rotors
5-Body Assembly
6-Driven Gear
7-Pump Gasket
8-Gear Retaining Pin
9-Relief Valve Retainer
10-Relief Valve Retainer Gasket
11-Relief Valve Spring
12-Relief Valve Plunger