Jeep UNIVERSAL CJ-2A - Page 85

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E

F4-134

ENGINE

E-93. Install

Timing

Gear Oil

Jet

Install

the

timing

gear

oil

jet

in

the

tapped

hole

in

the

front

of

the

cylinder

block.

Position

the

oil

hole

in

the

side

of

the

oil

jet

so

that

it

will

direct

the

oil

stream

against

the

camshaft

driven

gear

just

ahead

of

the

point

of

engagement

with

the

crank-

shaft

drive

gear.

Note: A

new

timing

gear

oil

jet

entered

production

with

engine

S/N

4]-250095.

The

earlier

jet

has

a

.070" [0,178 mm.]

diameter

aperature;

the

later

jet

has

a .040" [0,102 mm.]

aperture.

The

later

jet

reduces oil pressure

variation

at

No.

1

connecting

rod

bearing.

It

is

recommended

that

the

.040 "

jet

be

installed

in

engines

with

serial

numbers

lower

than

above

whenever

it

has

been

necessary

to

re-

place a scored

or

burned

No.

1

connecting

rod

bearing.

E-94. Install Oil

Pump

The

oil

pump

is

driven

from

the

camshaft

by

means

of

a

spiral

(worm)

gear.

The

distributor,

in

turn,

is

driven

by

the

oil

pump

by

means

of

a

tongue

on

the

end

of

the

distributor

shaft

which

engages a

slot

in

the

end

of

the

oil

pump

shaft.

Because

the

tongue

and

the

slot

are

both

machined

off

center,

the

two

shafts

can

be

meshed

in

only

one position. Since

the

.

position

of

the

distributor

shaft

determines

the

timing

of

the

engine,

and

is

controlled

by

the

oil

pump

shaft,

the

position

of

the

oil

pump

shaft

with

respect

to

the

camshaft

is

important.

Turn

the

crankshaft

to

bring

together

the

timing

marks

on

the

crankshaft

and

camshaft

gears. See

Fig.

108.

Install

the

oil

pump

mounting

gasket

on

the

pump.

With

the

wider

side

of

the

shaft

on

top

(nearer

the

top

of

the

cylinder

block),

start

the

oil

pump

drive

shaft

into

the

opening

in

the

left

side

of

the

cylinder block

with

the

mounting

holes

in

the

body

of

the

pump

in

alignment

with

the

holes

in

the

cylinder

block.

Insert

a

long-blade

screw-

driver

into

the

distributor

shaft

opening

in

the

opposite side

of

the

block

and

engage

the

slot

in

·the

oil

pump

shaft.

Turn

the

shaft

so

that

the

slot

is

positioned

at

what

would

be

roughly

the

nine-

thiry

position

on

a clock face. .

Remove

the

screwdriver

and,

looking

down

the

distributor

shaft

hole

with

a flashlight,

observe

the

position

of

the

slot

in

the

end

of

the

oil

pump

s~ft

to

make

certain

it

is

properly

positioned.

Replace

the

screwdriver

and,

while

turning

the

screw-

driver

clockwise

to

guide

the·

oil

pump

drive

shaft

gear

into

engagement

with

the

camshaft

gear, presS

·against

the

oil

pump

to

force

it

into

position.

Remove

the

screwdriver

and

again

observe

the

position

of

the

slot.

If

the

installation

was

properly

made,

the

slot

will

be

in

a

position

roughly

equiva-

lent

to

eleven o'clock

position

on

a clock face

with

the

wider

side

of

the

shaft

still

on

the

top.

If

the

slot

is

improperly

positioned,

remove

the

oil

pump

assembly

and

repeat

the

operation.

Coat

the

threads

of

the

capscrews

with

gasket

cement

and·

secure

the

oil

pump

in

place

with

two

lockwasher-equipped

capscrews

installed

through

the

body

of

the

oil

pump

and

into

the

cylinder

block

and

one

lockwasher-capscrew

installed

through

the

oil

pump

mounting

flange.

84

E-95. Install

Timing

Gear Cover

Apply

a

thin

coat

of

gasket

paste

to

the

timing

gear

cover.

Position

the

gasket

on

the

cover

and

carefully

locate

the

cover

on

the

front

of

the

front

mounting

plate.

Attach

the

cover

and

timing

indicator

and

tighten

the

bolts.

E-96. Install

Pistons

and

Connecting

Rods

Before

installing

each

piston

and

connecting

rod

assembly

in

the

cylinder

block, generously

lubricate

the

entire

assembly

with

engine oil.

Space

the

ring

gaps

around

the

piston

so

that

no

two

gaps

are

aligned

vertically

and

are

not

located

over

the

T -slot

in

the

piston

skirt.

Insert

the

assembly

in

the

correct

cylinder

with

the

connecting

rod

identifying

number

toward

the

camshaft

side

of

the

cylinder

block.

When

installing

each

assembly,

rotate

the

crankshaft

so

that

the

crankpin

is

in

the

down

position.

Fit

a

piston

ring

compressor

tightly

around

the

piston

rings.

Reach

up

from

the

bottom

of

the

cylinder

block

and

guide

the

end

of

the

connecting

rod

over

the

crankshaft

journal

as

the

piston

is

tapped

down

into

the

cylinder

bore

with

hammer

handle.

Lubricate

the

connecting

rod

bearing

surfaces

generously

with

engine

oil

and

install

the

bearing

cap

with

the

numbered

side

matched

to

the

num-

bered

side

of

the

connecting

rod.

Torque

the

nuts

evenly·

j5

to

45

lb-ft.

[4,8 a 6,2 kg-m.].

The

con-

necting

rod

cap

nuts

are

locked

with

stamped

nuts.

Used

stamped

nuts

should

be

discarded

and

re-

placed

with

new

ones.

These

locking

stamped

nuts

should

be

installed

with

the

flat

face

toward

the

connecting

rod

nut.

Turn

the

locking

nut

finger

tight

and

then

%

turn

more

with

a

wrench.

Refer

to

Par.

E-36

for

detailed

information

on

fitting

pistons

and

rings

in

the

cylinder

bores.

E-97. Install

Crankshaft

Pulley

Align

the

keyway

in

the

pulley

with

the

woodruff

key

installed

in

the

crankshaft.

Drive

the

pulley

onto

the

crankshaft

and

secure

it

in

place

with

the

crankshaft

pulley

nut.

Insert

a

block

of

wood

between

one

of

the

counterweights

on

the

crank-

shaft

and

the

side

of

the

cylinder

block

to

prevent

the

crankshaft

from

turning,

then

tighten

the

nut.

E-98. Install Oil Pan

Before

installing

the

oil

pan,

make

a final

internal

inspection

particularly

making

certain

that

the

inside

of

the

cylinder

block

is

clean.

Apply

a

thin

coat

of

gasket

paste

on

the

oil

pan.

Place

the

new

oil

pan

gasket

in

position.

Set

the

oil

pan

in

posi-

tion

on

the

cylinder

block

and

install

the

oil

pan.

Torque

the

attaching

bolts

9

to

14

lb-ft~

[1,2 a 1,9

kg-m.].·

Install

the

oil

pan

drain

plug

and

gasket

and

tighten

the

plug

securely.

E-99. Install Cylinder Head

Make

certain

that

the

entire

top

of

the

cylinder

block

assembly,

the

lower

surface

of

the

cylinder

head,

and

the

cylinder

head

gasket

are

clean.

Blow

all

dirt

or

carbon

out

of

the

blind

tapped

bolt

holes

in

the

cylinder

block

before

the

cylinder

head

and

gasket

are

installed.

Using

no

sealer

or

other

com-

pound,

position

the

new

cylinder

head

gasket

with

the

crimped

edges

of

the

gasket

metal

down

(See

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