Troy-Bilt Horse Tiller Technical Manual - Page 11

SECTION

3:

Pre

-Service

Inspection

PTO

HORSE

MODEL

TECHNICAL

MANUAL

Page

3-1

4/90

Before

you

begin

your

repair

or

maintenance

procedure

take

a

moment

to

perform

a

pre

-service

inspection

of

the

following

transmission

parts.

In

doing

so,

you

may

dis-

cover

additional

problems

that

can

be

corrected

while

the

tiller

is

in

your

shop.

Wheel

Shaft

—

Inspect

the

wheel

shaft

for

movement

and

oil

leaks:

•

Grasp

the

tiller's

handlebars

and

tilt

the

tiller

forward

so

its

weight

is

resting

entirely

on

the

wheels

and

move

the

tiller

side

-to

-side.

See

Figure

3-1.

O

D

0

O

Figure

3-1:

Pre

-Disassembly

Inspection

of

the

Wheel

Shaft.

If

the

tiller

moves

more

than

.015"

from

side

-to

-side

on

the

wheel

shaft,

it

indicates

that

the

wheel

shaft

needs

either

to

be

shimmed

or

that

one

or

both

of

the

snap

rings

has

become

dislodged

from

the

snap

ring

groove(s).

•

If

oil

is

leaking

from

around

one

or

both

of

the

wheel

shaft

oil

seals,

replace

the

oil

seal(s)

and

deter-

mine

why

the

oil

seal(s)

failed.

WARNING:

When

servicing

the

machine,

prevent

uninten-

tional

starting

of

the

engine

by

disconnecting

the

spark

plug

wire

and

keeping

the

wire

away

from

the

spark

plug.

Place

the

engine

throttle

control

in

the

OFF

position

and

shift

the

Wheels/Tines/PTO

Drive

Lever

into

NEUTRAL.

PTO

Power

Unit

Drive

Shaft

Pulley—

Check

the

PTO

drive

shaft

pulley

(see

Figure

3-2)

for

end

play

and

oil

leaks:

Drive

Shaft

Pulley

111

Figure

3-2:

Pre

-Disassembly

Inspection

of

the

Drive

Shaft

Pulley.

•

Using

two

hands,

grasp

the

drive

shaft

pulley

and

pull

it

in

and

out

to

check

for

end

play.

There

should

be

.005"

to

.010"

play.

If

the

drive

shaft

pulley

has

more

play,

the

bolt

that

holds

the

pulley

may

need

to

be

tightened.

This

bolt

should

be

tightened

to

170

inch/lbs.

If

tightening

does

not

reduce

the

play,

the

PTO

power

unit

drive

shaft

needs

to

be

shimmed.

•

Look

for

oil

leaks

around

the

pulley.

If

you

see

oil,

make

sure

that

it

did

not

come

from

the

neu-

tral

plunger

on

the

housing

cover;

this

is

an

oil

relief

point.

If

you

suspect

an

oil

leak

from

around

the

pulley,

inspect

the

fol-

lowing:

a.

The

bolts

holding

the

front

bearing

cap

may

not

be

suffi-

ciently

tightened.

b.

The

washers

on

the

bolts

that

hold

the

front

bearing

cap

may

be

worn

or

the

bolts

may

not

have

been

coated

with

non

-hardening

gasket

sealer.

c.

The

front

bearing

cap

gasket

may

have

failed.

d.

The

front

drive

shaft

oil

seal

may

have

failed;

find

out

why.

Tiller

Attachment

—

Tip

the

tiller

so

that

you

have

a

full

view

of

the

tiller

attachment

(see

Figure

3-3).

Then

check

the

following:

•

Inspect

the

area

around

the

rear

bearing

cap

for

oil

leaks.

If

you

see

an

oil

leak,

inspect

the

following:

a!

HOUSING

COVER

TILLER

TINE

SHAFT

'1

*

--REAR

BEARING

CAP

HOUSING

COVER

GASKET

Figure

3-3:

Pre

-Disassembly

Inspection

of

the

Tiller

Attachment.

If

Troy-Bilt Horse Tiller Technical Manual - Page 11

Service, Inspection

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