Page 1
NORTON
8X2-4 HYDRAULIC
l
:
SURFACE GRINDER
INSTRUCTIONS
i
i
i
t
X
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4
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WORCESTER 6, MASS.
)
Page 2
NORTON
8 x 2L
This manual is intended to assist
grinding
foreman, operator, and maintenance foreman in
knowing the proper method of installing,
maintaining
the Norton 8 x 24" Hydraulic Surface Grinder.
The descriptions,
as given, were correct
f? Hydraulic Surface Grinder
Instruction
&
Parts Manual
illustrations,
at
the time of printing.
the millwright,
operating, and
and specifications
However,
since it is the policy of Norton Company to constantly
improve its products, those machines built
later
dates may differ from these details.
at
earlier or
NORTON COMPANY
Worcester 6, Massachusetts
Cable address ??
N0RC0
??
Branch Offices
#
Chicago, Illinois
Cleveland 3, Ohio
Detroit 8, -Michigan
Hartford 7, Connecticut
New York 6, New York
England
Dealers in principal
4737 S. Christiana Avenue
1306 East 55th Street
5805 Lincoln Avenue
998 Farmington Avenue
6l Broadway
Welwyn Garden City, Herts
Cities
Page 3
INDEX
Section I
Operation
Section II
Servicing
Uncrating and Handling .......................
Mounting the Grinding Wheel . . .
Greasing and Oiling
.......
Oil for Hydraulic System . . . . .
Table Dogs
Wet and Dry Grinding
.......................
...............
... . . . .
... .
Operating Levers ....................... . .
Starting the Table
......................
.
Bleeding the Hydraulic System . .
Cross Feed Dogs
.......................
... .
Cross Feed ..........................................
Truing the Grinding
Grinding the Work ................................
Table Ways
..................................
Wheel .
. . .
... .
Saddle ..................................................
Anti-friction Bearing Spindle
Replacing Spindle
Mounting Spindle Belt
Vee Type Belt
Flat Belt
..........................................
........
......
..................................
. .
Vertical Slide Gib ...........................
Hydraulic Pressure ...........................
Page
7
7
7
7
7
7
8
8
8
9
9
9
10
10
. . 10
10
. . 10
11
11
. 11
. 11
Section III
Construction
Section IV
Isometric Parts Drawings
The Hydraulic System . . .
Cross Feed ...
Vertical
Feed . ...............
...............
In the Event of Difficulty
1.
Vertical Wheel Feed
2.
Cross Feed Cylinder and Valve .... 19
3. Operating Levers
Table Hand Traverse and Control Valve 21
5, Hydraulic and Coolant Pumps . .
6, Table Cylinder and Valve
. .
.
12
13
13
13
18
20
. . 22
23
Page 4
ILLUSTRATIONS
Photographs
/
;>
~i
Number
N-5569B
N-5570A
N-5886
N-5887
N-5885
SE-690-A
SE-692-A
SE-694-A
SE-696-A
SE-6S8-A
Title
Front view of Machine
Rear view of Machine
Hydraulic Diagram - Hand Operation ......
Hydraulic Diagram - Automatic Cross Feed . .
Hydraulic Diagram - Truing ...
...................
Drawings
Vertical Wheel Feed
Cross Feed Cylinder and Slide . .
Operating Levers .............
Table Hand Traverse and Control ValVfe . .
Hydraulic Pump - Coolant Pump - Table Dogs .
Page
4
5
14
15
16
IS
19
20
21
22
SE-686-A
Table Cylinder and Valve ..........
23
Page 5
ANTI -FRICTION
BEARI
TABLE REVERSE DO«^
NGj 5PINOLE
VERTICAL- FEED
HAND
QRAO-0002.1' OR
WHEEL-ONE
.005 MM-
TURN
2.5-4 M M-
ONE
=,IOO" OR
5PLA5H QUARD
TABLE STOP
DO Q
LI FT LATCH
BEFORE
TABLE TRAVERSE
HAND
ELECTRIC
CONTROL
CABINET
CROSS
hand wheel
one
.00l"0R025 M M
LIFTING^
TABLE
WHEEL
GjRAD =
FEED
TABLE REVERSE
-
LEVER.
CROSS
FEED
DIRECTION
- LEVER
T
able
-START-STOP
lever
CROSS FEED
^-INSTR UCTI ON
„ X PLATE
| .]\S
[
I COOLANT TANK
3(lF
table
peed
CONTROL
LEVER
supplied
TRUINQ
CROSS
FEED
SELECTION
LEVER
CROSS FEED
' AOJ KNOB
: \
SPEED
)
S
erial
FI Q 1
N
umber
REMOVE
SERVICE HYDRAULIC
PUMF>
COVER
TO
Page 6
COOLANT PUMP
(
if supplied
)
TELESCOPING!
WAY QUARD5
VERTICAL
LIFT LATCH
before
LI FTlNGf TABLE
:
SPINDLE BELT
ADJUSTMENT
DRAI N HYDRAULIC OIL
£
CABINET
JAFETY
LOCK
, LI^HT QREASE
OR
HEAVY OIC
;
F I Cbj. 2.
N5570'A
Page 7
SECTION I
OPERATION
6
There is very little
of a NORTON 6 x 24
some countries,
f? Surface Grinder.
customs requirements
motors and other electrical
reassembling to do upon receipt
On export shipments
make it necessary to ship
equipment separately.
In this
to
case, of course, these units must be mounted after the machine
is received.
magnetic
In the majority of cases, however, the motors and
chucks are shipped mounted on the machine.
Uncrating and Handling
After uncrating
from the bright
parts with gasoline
machine to the position it is to occupy and level
to back and from side to side,
of the sliding
crane.
2i
A good way to do this is to use two steel
t? in diameter
table.
and about 4
the machine, remove the heavy grease
or kerosene.
working from the finished surface
Be careful in lifting
! long.
Place one bar under each end
Move the
it
the machine with a
from front
bars about
of the upper part of the base where it flares out to support the
saddle.
lifted with little
to place the sling directly
must be observed not to allow it to press against
lighter
lifted. Use wooden wedges under edge of base
after which the machine may be fastened to the foundation by
A sling can then be rigged to these bars and the machine
difficulty.
members or sections
Of course, it is also possible
on
the base but in this case,
any of the
and break them when the machine is
in leveling
care
machine
means of lag screws through the holes in the base.
After the machine has been located,
frame from around the pump unit within the base.
motor brace prevents
during transit.
the spring-mounted
unit from swinging
With its removal the unit should swing freely
within the base.
Be sure that all interior
are tight
. Each hose is equipped at one end with a simple
fitting and a union at the other end.
tightening
which may ruin it.
the hose does not twist.
the fitting.
Otherwise the hose will take a twist
Be sure also,
Hydraulic pulsation
hose and pipe connections
Loosen the union before
in tightening
will cause it to break quickly.
The hand wheels are readily
motors can be connected.
furnished, wire it to direct
If an electromagnetic chuck is
current with the proper character
mounted after
istics .
remove the metal
This pump
the union,
in a
twisted
which the
that
hose
Page 8
Mounting Grinding Wheel
7
The grinding wheels are packed separately, although
included with the crate or box in which the machine is shipped.
It will be observed that the grinding wheel is mounted on a
sleeve or collet which in turn is mounted on the end of the
spindle.
If a variety of work is to be ground, requiring
several different wheels and necessitating frequent wheel change,
the best practice is to obtain a collet for each wheel so as to
leave the wheel mounted permanently on this collet.
Greasing and Oiling
Care should be taken in greasing and oiling this
machine. The photographs on pages 4 and 5 will give an indication
as to where lubrication should be applied, as will the special
lubrication tag attached to the machine. All oil cups should:
be replenished and grease cups filled
instructions for the anti-friction
frequently.
bearing spindle.
Follow maker
?s
Oil for Hydraulic System
Because of our satisfactory experience with this
product, we recommend that highly refined light turbine oil
(S.U.Vo 150 at 100°F.) be used in the hydraulic system. The oil
should be poured directly
into the base through the front
opening until the pump below the motor is entirely submerged.
t
Table Dogs
In continuing to set up the machine, place and lock the
table reverse dogs approximately in line with the ends of the
magnetic chuck or, if this unit is not used, in line with the
ends of the finished table surface, approximate correct positioning
being indicated in the photograph on page 4-
Wet and Dry Grinding
If the machine is equipped for wet grinding, put a
quantity of grinding compound in the tank filled with water.
Suppliers
in any event do not have the-coolant too rich.
? instructions will give the correct proportions but
If the machine
is equipped for dry grinding, attach the dust hood to the wheel
guard and connect the hood to either the central or individual
exhaust system.
Operating Levers
Now locate the various operating levers,
table
start-stop lever,
the cross feed selection lever and the
hydraulic table speed control lever.
(See Page 4)
especially the
Be sure the grinding
wheel is clear of the table top
or the magnetic chuck and also that the table start-stop lever
is in the ??
stop
?? position.
Page 9
8
»
Starting; the Table
Refer to page 4 and follow the procedure below:
1. Locate both the horizontal cross feed direction lever
and the vertical selection lever in the "hand" positions.
2. Be sure the table dogs are properly in place and that
the cross feed dogs are not set so as to tip down the
table reverse lever.
3* Set the table speed control lever in the "slow" position.
4. Start the hydraulic motor.
5. Move the table start-stop lever to the "start" position
and the table will traverse slowly back and forth.
Bleeding the Hydraulic System
When a hydraulically operated machine stands idle for
several hours, it is frequently necessary to "bleed" the system
of air, i.e.,
system with oil.
to displace air which has found its way into the
Air in the system causes the units which are
operated hydraulically to move in an unsteady or jerky manner.
If a jerky motion of the table develops, it will continue until
the air is removed, which can best be accomplished by unlatching
the table piston at each end (See Page 4) and traversing the
piston several times by power the full length of its travel.
Cross Feed Dogs
Now stop the table traverse and set the cross feed
dogs which are shown in Figure 1. Move the saddle back and
forth with the cross feed hand wheel and observe the action
produced by these dogs. You will notice that, as the point
on the side cam lever rides up onto the dog, the handle of the
reverse lever is raised. Consequently, that portion of the
reverse lever which normally contacts the table reverse dogs
is depressed sufficiently to allow the left table reverse dog
to pass over it.
With the table traveling to the right it
continues until the table safety stop dog contacts the table
stop lever (see Page 4).
With the automatic cross feed in use, an intermittent
motion of 0-3/16" per table reversal is obtainable.
Each graduation of the cross feed hand wheel
represents .001" or .025 mm.
Each complete revolution of this hand wheel
represents .200" or 5*
OS mm.
Page 10
Cross Feed
9
The NORTON 8 x 2
unique cross saddle motion in that not only may an intermittent
cross feed be obtained, but also by means of proper positioning
of the small vertical
selector lever, a variable speed continuous
motion may be obtained. This continuous motion is primarily
for wheel truing but also could, in certain cases, be used for
grinding
.
Hydraulic Surface Grinder has a
used
Truing the Grinding Wheel
The next step is to true the grinding wheel* If a
magnetic chuck is used the diamond holder can be held on the
face of the chuck. If no chuck is used the diamond holder can
be clamped to the table surface by means of a bolt in the tee
slot of the table. Move the table until the diamond is directly
under the center of the wheel spindle.
wheel until it touches the diamond lightly.
cross feed for truing and allow the diamond to pass beyond the
edge of the wheel and then feed down about 0.0005*
Then lower the grinding
Set the automatic
7 and feed the
diamond back across the wheel to the opposite edge. Repeat this
procedure until , by the sound of the wheel in contact with the
diamond, it is certain that the entire circumference of the wheel
has been trued.
If a roughing operation is to be performed a compara
tively fast traverse of the diamond across the wheel face is used.
A fine finish requires a slower traverse.
finish possible
, the diamond should be moved as slowly as possible
across the wheel face without any down feed of the wheel during
In fact, for the finest
the last several passes.
Grinding the Work
Before starting to grind, set the table reverse,
feed and safety table-stop dogs, the first
two for length and
cross
the third to stop the table in the loading position (if desired).
Load the magnetic chuck and energize it.
Turn on the coolant, and with the wheel running, start
the.table. With one edge of the work under the wheel, feed down
until
sparks show.
Now position the cross feed direction lever so that the
work will move into the wheel and position the cross feed selec
tion lever on ??
feed??. This position will give an intermittent
feed of the cross feed saddle at each table reversal.
After the work has passed under the wheel to the other
limit of the saddle, the table will stop in the loading position.
If the work has been ground sufficiently, the machine may be
reloaded. After reloading, or to make a second pass to remove
more stock, reverse the cross feed direction, again set the depth
of cut and start the machine as before, repeating the cycle
described.
Page 11
Table Ways
10
SECTION II
SERVICING
To inspect the table ways, simply unlatch from each
end of the hydraulic piston after which two men can easily lift
the table from the saddle. This latch is shown in Figure 1.
Saddle
The saddle can also be readily removed. With the table
removed as in the preceding paragraph, run the saddle into it!s
rearmost position. Then remove the acorn nut shown at the bottom
of the handwheel in' drawing #SE
forward as possible, and remove the guards at the rear by taking
-692-
A^. Now run the saddle as far
out the screws and springs holding them in place. Now, by reaching
through the front of the base, disconnect the supply and discharge
pipes.
it*s ways. In the event a crane or hoist is not available it is
suggested that four men be'Used in this operation, since it will
be found that this number make an easy task of a job which might
cause damage to the machine if attempted by fewer men. In re
placing the saddle, it is advisable to have someone turn the
After doing this, lift
the saddle gently upward and off
cross feed hand wheel so that the nut may engage the screw properly.
Anti-Friction Bearing Spindles
If any trouble is experienced with the anti-friction
bearing spindle, please communicate with the manufacturer. When
repairs are needed on the spindle cartridge time and money will
be saved if the spindle is returned directly
to
the manufacturer.
Do not tear down the spindle before returning it since it would
be very difficult
to determine the cause of failure.
Always
mention the serial numbers stamped on the spindle when writing.
Replacing Spindle
To replace the spindle,
housing and slide
it
forward until
is flash with the rear face of the housing,
set screw on the under side of the housing,
these screws are used to locate
in no case should they be tightened enough to cause the spindle
to stick.
the spindle
straight-edge
These screws should be used merely to locate
from turning.
from the motor sheave to the spindle
Check the alignment
making allowance for the float
Mounting Spindle
Belt
In mounting the driving
of the spindle
the better
better
will be the production
straight-edge
from the machine, the operator
the alignment
must be used if correct alignment
of the motor with the spindle,
insert
the rear of the cartridge
the spindle
in the motor shaft.
belts
the cartridge
Take up on the
On some machines
in its housing, but
of spindle
following the removal
is
reminded that
in the
sheave,
and the longer the belt life.
is to be achieved.
and keep
by a
the
A
Page 12
Vee Type Belt
11
To place the vee belt type of drive on the machine,
raise the motor upward, hook the belt into the motor sheave
and into the groove on the spindle pulley.
Lower the motor
until a slight tension is established in the belt. Since the
vee belt obtains its traction through a wedging action,
tension should be only enough to overcome vibration.
Flat Belt
In locating the flat belt on its pulleys great care
must be exercised. In the event the spindle has been removed
from its housing, it must be replaced in exactly the same
position. The belt pulleys must be exactly in alignment and
any variation from this alignment will cause the belt to stretch
on one side, causing it eventually to be entirely ruined.
Pulley alignment should always be checked with a straight-edge.
Since this belt is of unusual construction, more than ordinary
attention should be paid to belt tension.
With the belt in
place, the pulleys should be allowed to run for a minute or
more to distribute the tension evenly throughout the belt. The
proper tension, obtained by adjustment of the motor up or down,
should be just that amount that allows the belt to run without
any tendency to flap. It will be found that, if the belt is
carefully
indefinite life and will more than pay for itself
performance. The belt itself
lined up and taken care of properly, it will have an
in
perfect
is
of a slightly elastic nature
and is practically impervious to the effects of lubricants.
Since it depends on its slightly
driving power, no belt dressings of any variety should ever
be used
.
tacky surface for its great
Vertical Slide Gibs
The vertical slide has two taper gibs, one fixed and
the other provided with a simple nut adjustment to take up for
wear. These gibs become exposed upon removal of the telescoping
vertical
way guards.
Hydraulic Pressure
The hydraulic pressure relief valve, located inside
the base is adjusted by removing the cap and turning down
(clockwise) on the enclosed screw to increase the pressure and
vice versa.
The hydraulic pressure should be approximately
70# per sq. in.
Page 13
The Hydraulic System
12
SECTION III
CONSTRUCTION
Hydraulic diagrams will be found on pages 14, 15 and
16.
The hydraulic pump, direct driven by its own motor through
a flexible coupling, draws oil from the reservoir in the base,
which has a capacity of about 20 gallons (75.7 liters).
The
proper height of oil in the base is to keep the pump completely
submerged
at
all times. Oil is poured directly into the base
through the front .
We reconpend that highly refined light turbine oil
(S.U.V. 150 @ 100° F.) be used in the hydraulic system, since,
while other oil may fulfill all requirements of performance and
economy, we have had success with this product.
The pump is mounted in the base on a spring-hung
frame and turns in a clockwise direction.
upward on the left
connects with the table traverse and speed
The hose leading
control values, while that on the right leads to the automatic
cross feed valve. Copper pipes serve as exhaust outlets for
these units.
Each pipe and hose is fitted with a union accessible
from the front of the machine which is disconnected when the
motor-pump unit is to be removed from the machine.
The motor may
then be pulled forward and out as the suspending springs are
disengaged.
On replacing the unit, extreme care should be taken
that the.supply hoses are fastened without taking a twist.
simple fitting should be tightened in place first,
the union shotild be tightened. In setting up the union,
after which
that the hose does not twist, as this will either loosen the
joint or cause the hose to break under the pulsation of the
The
hydraulic pump.
The operator should see that both halves of the flexible
coupling between the pump and motor are kept tight
respective shafts and also pressed tightly together,
of these flanges will cause rapid destruction of the coupling
on
their
Looseness
disc.
Oil from the pump enters the reverse valve in two
places and passes to either side of the table cylinder, depending
on the position of the valve. Oil exhausts from a vee port in
the speed control piston, a notch which, when it is pushed
inward seals the part allowing no oil to escape and hence stopping
the table movement, the oil bypassing through the exhaust line.
Page 14
13
Turning the table speed control lever to the right
closes the vee port, reducing the speed of the table until it
is brought to a stop. The table should not be stopped in this
manner since it causes oil pressure to build up until the
relief valve opens at a pressure which if vented continually
causes the oil to heat up and also throws an unnecessary load
on the pump motor. Stop the table traverse only by positioning
the table stop-start lever at the "stop" position so that oil
under pressure will exhaust freely and an equal pressure will
be established on both sides of the table traverse piston.
Cross Feed
The operation of this unit is comparatively simple
and needs little
explanation,
As the table reverses, the reverse
lever swings through a horizontal arc.
To the reverse lever is
attached a link which operates the table reverse valve piston,
and at the same time, a small four-way control valve.
latter valve causes a shuttle valve to operate at each table
reversal
.
This back and forth movement of the shuttle valve
This
causes the cross slide piston to move by metering out exhaust
oil.
The amount of oil allowed to escape from the cross slide
either in intermittent or continuous motion is governed by two
small knurled valve knobs on the control panel of the machine
as shown on page 4*
9
Vertical Feed
The vertical feed for the grinding
in the Parts Section.
Review of this illustration
the working of the vertical feed mechanism.
In the Event of Difficulty
Should any problem with this machine arise, read this
booklet ^through and in the majority of the cases the remedy will
be found herein. For instance, should the table refuse to start
For instance, should the table
wheel is shown
will indicate
refuse to start
it should be ascertained that the hydraulic pump motor is running
If it.is not, trouble should be looked for in the motor itself,
its wiring or starting switch.
If the motor is running, trouble
should be sought in the hydraulic line in the shape of a broken
hose or loose connection.
Using this method of tracking down trouble, the
average mechanic can run and maintain the Surface Grinder with
perfect assurance.
If, however, a difficulty
arises that does
not.respond to this treatment, communication with our home
office or one of the several branch offices will bring assistance.
When this is done, information as to machine serial number, time
of purchase, and full
should be given
.
particulars on the nature of the trouble,
f
Page 15
(f>
pressure
Q EXHAUST.
.
PRINTS TO BE. COLjORED AS PC*. OR1G
AS REGARDS T
O PRESSURE AND EVHAlysx
1MAL.
TABLE CYU.
CROSS SL\PE
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ND-2042.
art
UNLESS OTHERWISE SPECIFIED: TOLERANCES OF DIMENSIONS SHALL DE ±Vu". ANGLES
AND SMALLER; STD. TO .OOOs" SMALL. LARGER THAN l" DIAM. STD. TO OOI ' SMALL FILLETS SHALL NOT EXCEED Vn
CHAMFERS SHALL BE 40"; CENTER UNES ARE SHOWN ON SYMMETRICAL PARTS OF DRAWING AND MUST
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:
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NORTON COMPANY GRINDING MACH. DIV. WORCESTER. MASS.
HVPRAUUC- DIAGRAM.
NAME.
1
HAND OPERATION.
SURFACE GR- MACH
________
Page 16
@
PRESSURE.
O
ejlhaust
PRINTS TO BE COLORED AS
L
AS REGARDS TO PRESSURE AND &X
PER
ORIGINAL.
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-0040
UNLESS OTHERWISE SPECIFIED; TOLERANCES OF DIMENSIONS SHALL BE ±tt«". ANGLES S*i REAMED HOLES l" DIAM.
AND SMALLER; STD. TO .0003" SMALL LARGER THAN l" DIAM. STD. TO .Od SMALL; FILLETS SHALL NOT EXCEED Ifa"
CHAMFERS SHALL BE 45*’: CENTER LINES ARE SHOWN ON SYMMETRICAL PARTS OF DRAWING AND MUST BE
P
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CENTRAL WITHIN ±Vu“. TOLERANCES SHALL NOT BE CONSIDERED ADDITIVE. DO NOT SCALE B./P. WORK TO
DIMENSIONS. REMOVE SHARP EDGES
C&-AC-
NORTON COMPANY GRINDING MACH. DIV. WORCESTER. MASS.
HYDRAULIC 'DIAGRAM
MAMS
AUTO. .INTERMITTENT CROSS FEED
ft X84 SURF AC E CR. MAC H
.
Page 17
@ PRESSURE-
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exkwstl
PRINTS TO PE COlOttCO AS PCK ORIGINAL,
AS REGARDS TO PRESSURE- AND EXHAUST.
TABLE REV
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UNLESS OTHERWISE SPECIFIED: TOLERANCES OF DIMENSIONS SHALL BE ±Vn". ANGLES S*; REAMED HOLESl" DIAM.
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CHAMFERS SHALL BE 43°; CENTER UNES ARE SHOWN
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CENTRAL WITHIN ± fa". TOLERANCES SHALL NOT BE CONSIDERED ADDITIVE. DO NOT SCALE C./P. WORK TO
DIMENSIONS. REMOVE SHARP EDGES.
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AU_ LARGER THAN l" DIAM. STD. TO .OOI SMALL: FILLETS SHALL NOT EXCEEDfa
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SYMMETRICAL FARTS OF DRAWING AND MUST BE
:
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0>TL
NORTON COMPANY GRINDING MACH. DIV. WORCESTER. MASS.
HYDRAULIC DIAGRAM
NAME
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, TRUING (CONTINUOUS CROSS FEEto^
8X24
SURFACE CR. M ftC H
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Page 18
SECTION IV
17
When ordering
2.
PARTS
IMPORTAN
parts,
1.
Give size, type, and serial
use the following procedure
DRAWINGS
T
number of the machine.
This information will be stamped on a pad
directly beneath the cast letters t?
to be found near the bottom at the front
side of the base
.
Give the complete number of the part
desired as shown in drawing.
Give name of drawing in which part is
3.
illustrated.
N0RT0N
??
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1
Page 24
8S 765 - Piston Rod NutJ
8S 766-Cylinder Head_
8S 767-
Feed Pipe (L.H)
8S 759-Valve QasKet._
8 S 7 5 2
-valve Splash Quan
8S 753-Pilot Piston ____
768-Valve B
r
r
S 769 - Cyli ndcr
8S 7 70 - Pi St o n
8S 771-Piston Rod
8S 764-Feed
il
©
8S 7 7 3 - Oil Seal
8S 7 74 - Table CyIinder
racK<z~t-
Pipe (R.H )
8S 7 7 2 - Clip
QasKet
___________
________
_______
/
i
!
I
I
r
s
\
\
s
/
8S 75 6
-Piston Stop Screw.
8S 755 - Piston Stop
8S 757-Spring Pin
SE-686-A
SE-*>87-A
_____
_______
o
8S 750 “
Valve
-8S 751-Valve Body Cap (L.H.)\
-—8S 760
-VaIve Body Cap (R H.)
8S 754-Reverse Valve Piston
761-Valve Piston Spool
7 62 - Bu
7 75
-Pi
763 -Valve Sleeve
8S 758 - Speed Control Piston
TABLE CYLINDER 5 VALVE
s
h i
Body
n
£5
lot Piston Extension
f I
&
€>
DR we, B'f
H RAND
V FONTAINE
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