MCi MC8 Crusader - Page 7

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MAINTENANCE

Crusader

MC-8

[

,.

0

,------'--l

-~5

___

DATE

~J:..,,:,_.:_u

IJ_Ly,......c...19.:....:....73-=-----_]MANUAL

,

!----suitable

length

I

2 •

soo•

7

"

-,

8.00

Min.

I

l

t

1.779

11

----

1,911"

-

,.

~77"

I

,909"

i

Figure

1-2:

Bushing Removal

&

Installation

Tool

securely

in this

position

and

remove

jacks.

Do

not at-

tempt

to

disassemble

or

perform

knuckle

repair

with

the

vehicle

supported

by

jacks

only.

Remove

hub

cap

plate,

wheel

bearing

adjusting

nut,

lock,

lock

dowel

ring,

and

doweled

nut

assem-

bly.

Remove

outer

wheel

bearing

cone

and

wheel

and

hub

assembly.

Disconnect

the

tie-rod

from

the

steering

arm.

The

tapered

knuckle

pins

must be

removed

from

the

bottom

side

of

the

knuckle.

Disconnect

push

rod

and

remove

brake

chamber.

Remove

the

knuckle

pin

cover

cap

screws,

cover

and

cover

gasket.

Remove

the

lock ring

with

a

pair

of

snap

ring

pliers.

Dislodge

and

remove

the

expansion

plug

with a drift.

Drive

knuckle

pin

out

by using a

bronze

drift

on

the

up-

per

end.

Remove

the

knuckle

pin sleeve

and

lift

off

steering

knuckle,

thrust

bearing

and

spacing washers.

REPAIR

Removal

and

replacement

of

bronze

steering

knuckle

bushings

should

be

done

using

the

removal

and

installation

tool shown in

Figure

I - 2. Such a

tool

can

be

made

from

a piece

of

round

bar

stock

which is

ground

with a

step

to

serve as a pilot.

Worn

bushings

are

pressed

out

of

the

knuckle,

em-

ploying

the

tool

described.

New bushings

should

be

installed

with

the

same

tool.

The

pilot

of

this

tool

prevents

collapse

or

distortion

of

the

bushing

during

installation.

The

bushing

should

be

pressed

into

the

knuckle

in

three

or

more

steps, using an

arbor

press,

to

allow

it

to

align

itself

in

the

bore.

First

press

the

bushing

into

the

knuckle

approximately

I

/8"

and

relieve press pressure.

Then

press

the

bushing in

another

I

/2"

and

relieve

press

pressure.

The

bushing

can now be pressed in until it

is

flush with

the

inner

machined

surface

of

the

knuckle.

This

applies to

both

upper

and

lower

bushings.

To

finish a bushing

either

a

burnishing

bar

or

reamer

should

be

employed.

Suitable

reamers

are

illustrated

in Figure I - 3. A

burnishing

ball

should

not be used for this

operation,

since it does

not

insure

a

true

alignment

between the two bushings.

The

reamer

has a

removable

pilot

which

is

in-

stalled to

ream

the

upper

bushing.

The

pilot

is

then

removed

to

ream

the

lower

bushing.

Avoid

the

possibility

of

tapering

or

enlarging

the

upper

bushing

while

inserting

the

tool

to

ream

the

lower bushing.

REASSEMBLY

Before reassembly,

make

sure

that

the

knuckle

pin

hole

in

the

axle

center

is

clean

and

dry.

Position

and

support

the

steering

knuckle

assembly

on

the

axle

center.

Slide

the

thrust

bearing

between

the

lower

surface

of

the

axle

center

and

the

lower

steering

knuckle

yoke.

Thrust

bearings

should

be

positioned

with

the

retainer

lip

down.

Align the

steering

knuckle

holes

with

axle

center

and

thrust

bearing

holes.

Place

a

jack

under

the

lower

side

of

steering

kn~ckle

yoke

and

raise

the

knuckle

so

that

all

clearance

1s

taken

up

between

the

lower

yoke,

thrust

bearing

and

lower

face

of

the

axle

center.

Clearance

between

the

top

face

of

the

upper

axle

center

end

and

lower

face

_of

upper

knuckle

pin

boss

should

not

exceed

.015

m.

Washers

and

shims

are

available

in

various

thicknesses

to

take

up

this

clearance

and

hold

within

the

desired

tolerance.

Make

sure

the

knuckle

pin

nut

turns

on

the

threads.

Insert

the

knuckle

pin

from

the

bottom

yoke

of

knuckle

and

drive

the

pin

into

the

seat

of

the

axle

center

and

by using a

bronze

drift.

Place

the

steel

knuckle

pin

sleeve

over

the

pin

and

tap

into

place.

Install

nut

and

tighten

to

350-390

ft. lbs.

to

draw

the

knuckle

pin

into

the

axle

center.

Then

apply

ad-

ditional

turn

to

line

up

with

the

next

cotter

pm

hole.

Do

not

back

off.

For

reassembly

of

brakes

refer to Sec. 4,

"Brakes

and

Air

System"

and

Section 15,

"Wheels,

Hubs

and

Drums."

TIE ROD

ENDS

DESCRIPTION

The

tie-rod

assembly

_is

of

3

piece

~onstructi?n

comprised

of

a

rod

and

two

end

assemblies.

The

tie-

rod

end

automatically

compensates

for

wear

on

bearing

surfaces.

The

tie-rod

end

stud_

is

held

in

c~rn-

tact

with

the

bearing

surface

by

tension

of

a

sprmg

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