Spacebar

SYMPTOM

POSSIBLE CAUSE

REMEDY

REMARKS

Machine will not

space.

1. Poor lubrication

Lubricate spacebar mechanism

completely (18-11).

2. Spacebar interlock cam

(75-2).

1. Adjust spacebar interlock cam

(75-2) radially around filter

shaft until spacebar interlock

bracket (102-34) is on high

point of cam.

2. Adjust interlock bracket

(102-34) back and forth for

clearance between A and B

when machine is in rest

position.

3. Spring missing on space

bar latch.

Replace spring (10-6).

4. Spacebar latch adjust

ment (10-6).

Adjust spacebar latch adjusting

screw (21-6) until spacebar latch

(10-6) moves under cam follower

(10-5) without hesitation when

spacebar keybutton is depressed.

5. Too much keylever pawl

clearance.

Adjust "U" shaped slot in space

bar keylever for clearance be

tween spacebar pawl (18-11) and

spacebar interposer (19-1).

6. Spacebar final stop out

of adjustment (28-25).

Form extension on final stop for

single space operation (28-25).

7. No keylever pawl over

lap (18-11)

Adjust keylever pawl overlap

(18-11) with adjusting screw

(18-14).

8. Clutch release arm not

releasing space cam.

Clutch release arm (20-2) not

releasing spacebar cam (95-15)

9. Trigger (22-11) not re

setting over escapement

torque bar (22-13).

Check spacebar latch lever screw

(10-9)

Spacebar latch lever screw con-

troIs escapement pawl clearance

for spacebar operation.

10. Interposer adjusting

screw missing or malad

justed (20-1).

Adjusting screws (20-1) controls

the clearance between spacebar

latch (10-6) and cam follower

(10-5) in rest position.

Cam follower (10-5) is used for

backspace and spacebar operation

When the spacebar is operated,

there must be enough clearance

between backspace latch and cam

follower so backspace will not

operate.

Machine will not

repeat space.

1. Spacebar final stop ad

justed too high.

Adjust repeat stop (28-25) by

forming extension.

2. Spacebar binding on key

board insulation.

Keyboard insulation may be hard

due to age (84-19).

3. Too much clearance be

tween keylever pawl

(18-11) and interposer

(19-1).

Adjust "U" shaped slot in space

bar keylever for clearance be

tween spacebar pawl (18-11) and

spacebar interposer (19-1).

4. Keylever pawl overlap

(18-11).

Adjust keylever pawl overlap

(18-11) with interposer (19-1)

by adjusting screw (18-14)

Spacebar gives

extra cycles

1. Spacebar binding on

cover.

Adjust spacebar left to right or

vice versa - limit side motion

with grip clips.

2. Worn interposer latch

plate (30-28).

Replace latch plate (30-28)

On late level machines, the latch

plate can be rotated 180 0 and

reinstalled.

3. Worn interposer latch

(33-34)

Replace latch.

4. Spacebar repeat stop

too low (28-25).

Adjust repeat stop (28-25) by

forming extension for a single

space operation.

5. Interposer restoring

bail not returning inter

poser to rest position.

Adjust extension lugs (29-27) on

interposer restoring bail (29-26),

by forming, so interposer (19-1)

will overthrow latch plate (30-28).

6. Not enough clutch re

lease arm bite.

Adjust function cam left to right

for more clutch release arm bite

(20-2).

7. Not enough clearance

between keylever pawl

and interposer.

Adjust "U" shaped slot in space-

bar keylever for clearance be-

tween spacebar pawl (18-11) and

spacebar interposer (19-1)

Check for damaged keylever pawl

(18-11).

8. Interposer latch pawl

binding on interposer.

Lubricate latch pawl (33-34) and

rotate latch back and forth until

it pivots freely.

9. Too much keylever pawl

overlap.

Adjust keylever pawl overlap

(18-11) with adjusting screw

(18-14).

10. Broken or missing cam

pawl springs.

Replace cam pawl & spring (5-3)

Also check cam pawl for damage

Spacebar opera

tion sluggish

1. Spacebar binding on

cover.

Adjust spacebar left or right -

limit the side motion with grip

clips.

2. Spacebar binding on

hardened keyboard in

sulation.

Keyboard insulation may be hard

due to age (84-19).

3. Clutch release arm bind

ing on cam.

Adjust function cam (95-15) to

the left, for clearance between

release arm (20-2) and cam(95-15)

4. Spacebar latch malad

justed (10-6).

Adjust spacebar latch adjusting

screw (21-6) until spacebar latch

(10-6) moves under cam follower

(10-5) without hesitating when

spacebar keybutton is depressed.

5. Latch lever screw malad

justed (10-9).

Adjust latch lever screw (10-9)

for escapement pawl clearance.

6. Interposer restoring bail

maladjusted.

Adjust extension lugs (29-27) on

interposer restoring bail (29-26),

by forming, so interposer (19-1)

will overthrow latch plate (30-28)

7. Repeat stop maladjusted

(28-25).

Adjust repeat stop (28-25), by

forming extension for one single

space operation.

Machine gets

extra spaces in

same place con

sistently.

1. Too much escapement

pawl clearance (73-43).

Adjust spacebar latch adjusting

screw for approx. .010" pawl

clearance.

2. Damaged escapement

rack (73-44).

Replace rack.

Worn or missing teeth on escape

ment rack. If rack is damaged

check escapement pawl for wear.

(73-43).

3. Escapement bracket

loose or maladjusted

(89-30).

Loosen 4 screws and adjust

escapement bracket so it will be

parallel to the tab torque bar.

Also adjust .010" clearance be

tween tab torque bar and escape

ment bracket.

4. Not enough pawl bite on

escapement rack.

1. Adjust pawl mounting stud for

.001" clearance between es

capement torque bar (76-4) and

pawl mounting stud (91-35).

If escapement torque bar (76-4) is

adjusted, check and readjust

trigger (22-11) clearance with

escapement trip link (23-14).

2. Adjust screw (76-5) for clear-

ance between escapement pawl

(73-43) and escapement torque

bar (76-4).

5. Pawl mounting stud

loose or maladjusted.

Adjust pawl mounting stud (91-35)

for .001" clearance between the

stud and escapement torque bar

(76-4).

6. Escapement torque bar

back stop (17-2) broken

or maladjusted.

Adjust backstop (17-2) so escape-

ment torque bar will not flex in

the center.

Escapement torque bar backstop

is located in the center section at

rear of machine.

Random extra

spaces.

1. Too much pawl clearance

(73-43).

Adjust spacebar latch adjusting

screw for approx.  .010" pawl

clearance.

2. Escapement bracket

loose or maladjusted.

Loosen 4 screws and adjust

escapement bracket parallel to

tab torque bar(91-31).

Adjust .010" clearance between

tab torque bar and escapement

bracket.

3. Pawl mounting stud

loose or maladjusted.

Adjust pawl mounting stud (91-35)

for  .001" clearance between the

stud (91-35) and escapement

torque bar (76-4).

4. Too much clearance be

tween escapement torque

bar and escapement pawl.

Adjust torque bar adjusting screw

(76-5) for .008" clearance be-

tween escapement torque bar

(76-4) and escapement pawl(73-43)

If escapement torque bar

(76-4) is readjusted, you have to

adjust trigger pawl clearance

(22-11) with escapement link

(23-14).

5. Worn escapement pawl

(73-43).

Replace

If escapement pawl is worn,

check escapement rack for wear.

6. Escapement torque bar

flexes too much.

Adjust escapement torque bar

backstop (17-2) so escapement

torque bar will not flex in the

center.

Escapement torque bar backstop

is on 13" and 15" machines.

7. Not enough pawl bite on

escapement rack.

See "Machine gets extra spaces in same place consistently, cause 4".

8. Spacebar latch lever

screw loose, broken or

maladjusted.

Adjust latch lever screw (10-9)

for escapement pawl clearance

during spacebar operation.