Machine Noisy

SYMPTOM

POSSIBLE CAUSE

REMEDY

REMARKS

1. Noise

Lubricate machine

Use recommended grease and

oil lubricants

2. Noise due to

binds

a) Cycle clutch end play (1)

Adjust the cycle clutch for

minimum clearance - no binds

using the collar or shims on the

left side of cycle clutch (1-1)

The collar or shims are located

between the cycle clutch left

bearing and the rebound check

pawl ratchet. Check end play by

using duck bill pliers on the cycle

clutch cams.

b) Operational shaft end

play (2)

Adjust the operational shaft end

play - minimum play; no binds (2)

The end play is controlled on 13"

and 15" machines by the shift

arbor (3-2) and the collar (3B-3)

on the right side of the operational

shaft.

On 11" machines by the shift

arbor and the function cams (3B-4)

c) Shift clutch spring

clearance (3)

Adjust shift clutch spring re

taining plate (3-3).

Loosen two screws (3-4) holding

retaining plate and slightly rotate

spring in unwinding direction.

When you adjust shift spring, your

objective is more clearance

between shift spring (3-1) and

shift arbor (3-2).

Overthrow stop must be checked

or readjusted (3-5).

3. Noise

Operational

shaft

Sleeve at left end of oper

ational shaft worn or missing

(6)

Replace sleeve

Remember when trying to remove

operational shaft; there is a "C"

clip (6-5) on the right side of

carrier return pinion gear.

Some machines have "C" clips on

both sides of carrier return pinion

gear (6-6).

4. Noise

a) Cold machine

When machine is cold, some

lubricants thicken and loose

effectiveness.

If noise is caused by machine

being cold - machine may need

to be cleaned and relubricated

with recommended lubricants.

b) Covers unlatched

Check latches for damage and

fasten covers.

On early machines, top cover

latch screws may be loose.

c) Platen binding on cover

Adjust platen knobs or machine

covers.

Top cover latches could be

broken on early machines.

d) Motor pawls hitting cover

(3A-7)

Adjust covers, check motor

mounts.

Also check motor pawl springs

for damage (3A).

e) Deflector or paper table

vibrating (3C-1)

Adjust - be sure each side is

properly mounted. Check springs

on each side of paper table.

The deflector pan is under the

platen. The paper table is the

graduated bar above the platen.

f) Shift arbor too close to

shift cam (3-2).

Adjust shift cam backup roller

(not adjustable on all models)

Check shift arbor for burrs (3-2)

g) Shift arbor (3-2) and or

"e" clip (4-1).

Lubricate

Lubricate shift arbor and "e"

clip with grease. Oil may cause

shift malfunction.

h) Machine not centered in

covers properly.

Adjust machine within covers.

Machine has adjustable mounting

brackets (4-2). Rear rubber

mounts could be missing or

damaged.

i) Plastic feet on bottom of

machine lower than rubber

feet on bottom cover.

Adjust plastic feet.

Check adjustment of typewriter

mounting brackets (4-2)

j) Cam pawl (5-3) hitting cam

ratchet (5-4)

Adjust cam pawl clearance by

rotating eccentric adjustment

until noise stops (5-5).

There are two locking screws

(5-5) that must be loose before

adjusting cam pawl clearance.

5. Noise (Motor)

a) Drive belt too loose or

too tight (6-7)

Adjust drive belt by moving

motor mounts brackets.

Also check motor belt for

missing cog teeth.

b) Motor touching machine

or brackets.

Adjust or rotate motor within

brackets.

Motor mounts could be worn or

damaged.

c) Nylon bushing missing or

worn (3A).

Replace bushing - It is located

between motor pulley and motor

shaft.

Remove drive belt (6-7) and

motor pulley (3A-6) in order to

check nylon bushing.

d) Pawls hitting drive belt

(3A-7)

Check pawls (3A-7) for wear -

adjust so pawls rotate freely

without contacting pulley.

This adjustment must be checked

manually. Also check pawl

springs for wear and damage

(7-8).

e) Motor mounts worn or

hard (3A).

Replace motor mounts.

f) Fan blade inside motor

hitting against housing

Remove motor - disassemble

and check for loose parts.

Sometimes flywheel moves out

of position and contacts motor

housing

6. Noise in upper

case shift

position

a) No lubrication

Lubricate shift mechanism

completely.

Use only grease on shift spring.

b) Operational shaft end

play (5-6)

Adjust operational shaft end play

for minimum clearance - no

binds.

End play is controlled on 13"

and 15" machines by shift arbor

(3-2) and a collar (3B-3) set

screwed to right side of oper

ational shaft. On 11" machines

the end play is controlled by the

shift arbor (3-2) and function

cams (3B-4).

c) Shift arbor damaged or

loose (3-2).

Replace or tighten

If shift arbor is loose - readjust

operational shaft end play (5-6).

d) Shift cam bearing (8-9).

Adjust or replace

If the bearing can be adjusted -

there will be a set screw on

inside of shift bearing, near

collar on right side of operation

shaft.

e) Not enough clearance

between shift arbor (3-2)

and spring (3-1).

Adjust shift clutch spring

retaining plate (3-3).

Loosen two screws (3-4) holding

retaining plate and rotate spring

in unwinding direction until noise

stops. Check shift overthrow

stop adjustment (3-4).

7. Noise during print cycle only

a) Skirt clearance

See alignment section

b) Gear train backlash

Adjust gear train for maximum

mesh - no binds

See alignment section

c) Loose drive belt (6-7)

Adjust drive belt by moving

motor mount brackets.

d) Binds in tilt or rotate

pulleys.

Check pulleys for binds and

lubricate.

e) Correcting seperator

wire damaged or malad

justed .

Adjust or replace correcting

seperator wire (13)

Seperator wire should be formed

so:

1. It clears the typehead at the

half cycle point.

2. It just contacts the card holder

3. It moves away from the card

holder when the ribbon load

lever is activated for the

correctable ribbon.

f) Powered and Free flight

adjustments incorrect

(35-1)

Check or adjustment procedure:

1. Put multiple copy control

lever to front position.

2. Put impression control lever

in #4 position.

3. With machine at rest, adjust

detent plate (35-40) so the

short leg on the hooverometer

spans the distance between --

the element and platen.

4. With machine half cycled -

adjust the eccentric (35-41)

until .035" spans the distance between element and platen.

A maladjustment here can cause

the typing element to break.

Adjustment 3 and 4 must be

performed alternately until both

adjustments are correct.