Cherry G704B Instruction Manual - User Manual

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1224 East Warner Ave,

Santa Ana, Ca 92705

Tel: 1-714-545-5511

Fax: 1-714-850-6093

www.cherryaerospace.com

ORIGINAL INSTRUCTIONS

Lightweight CherryMAX® Power Tool

N S N 5130-01-393-1584

T H E G 7 0 4 B T O O L

T A B L E O F C O N T E N T S

Description ...............................................................................................................................................................................3

Specifications for G704B ........................................................................................................................................................3

Safety Warnings ......................................................................................................................................................................4

How To Use The G704B ........................................................................................................................................................5

Maintenance And Repair ........................................................................................................................................................5

Fill And Bleed Instructions ......................................................................................................................................................6

Trouble Shooting .....................................................................................................................................................................6

Overhaul ..................................................................................................................................................................................7

Air Valve ......................................................................................................................................................................7

Head Sub-Assembly ...................................................................................................................................................7

Handle Sub-Assembly ................................................................................................................................................8

Pulling Heads ..........................................................................................................................................................................8

Cross Section Drawing Of G704B .........................................................................................................................................9

Parts List For G704B Riveter ...............................................................................................................................................10

Exploded View Of G704B .....................................................................................................................................................11

Declaration Of Conformity .....................................................................................................................................Back Cover

D E S C R I P T I O N

The Cherry G704B is a pneumatic-hydraulic tool designed specifically for the most efficient installation of CherryMAX®

3/4"

(19.05 mm)

rivets. Its durable, all metal housing makes this extremely robust tool ideal for use in rugged shop

environments. This tool utilizes straight, offset and right-angle pulling heads, all of which can install -4, -5, and -6 diameter
CherryMAX® bulb type rivets in all head styles, materials and grip lengths. Extensions are available for extending the pulling
heads to reach limited access areas. See the section on pulling heads for the correct pulling head part number.

S P E C I F I C A T I O N S F O R G 7 0 4 B

Cherry Aerospace’ (CHERRY) policy is one of continuous development. Specifications shown in this document may be subject to
change which may be introduced after publication. For the latest information always consult CHERRY.

AIR PRESSURE

90 PSI (6.2 bar) Min./ 110 PSI (7.6 bar) Max.

STROKE

.510 Inch (12.954 mm)

PULLING FORCE

3100 Pounds (13.79 kn) @ 90 PSI (6.2 bar)

CYCLE TIME

Approximately One Second

WEIGHT

4 1/4 Pounds (1.93 kg)

NOISE LEVEL

71 dB (A)

VIBRATION

2.5 m/s

AIR CONSUMPTION

3.9 CFM (110.5 liters/M) at 20 Cycles per Minute

3/4” (19.05 mm)

S A F E T Y W A R N I N G S



Operating this tool with a damaged or missing stem deflector, or using the deflector as a handle,

may result in severe personal injury. The pin deflector should be rotated until the aperture is
facing away from the operator and other persons working in the vicinity.



Approved eye protection should be worn when operating, repairing, or overhauling this tool.



Do not use beyond the design intent.



Do not use substitute components for repair.



Any modification to the tool, pulling heads, accessories or any component supplied by Cherry®,

or their representatives, shall be the customer’s entire responsibility.

Cherry® will be pleased to advise on any proposed modification.



The tool must be maintained in a safe working condition at all times and examined at regular

intervals for damage.



Before disassembling the tool for repair, refer to the maintenance instructions. All repairs shall be

undertaken only by personnel trained in Cherry® installation tools.

Contact Cherry® with your training requirement.



Always disconnect the air line from the tool inlet before attempting to service, adjust, fit or remove

any accessory.



Do not operate the tool when it is directed at any person.



Ensure that the vent holes do not become blocked or covered and that air line hoses are always

in good condition.



Excessive contact with the hydraulic fluid should be avoided to minimize the possibility of

rashes. Care should be taken to wash thoroughly.



Operating air pressure should not exceed 110 psi (7.6 bar).



Do not operate the tool without the pulling head in place.



Do not operate the tool unless the handle base (26) is fully secured by the retaining ring (27).



All retaining rings, screwed end caps, air fittings, trigger valves and pulling heads should be

attached securely and examined at the end of each working shift.



Do not pull rivet in the air.



The precautions to be used when using this tool must be explained by the customer to all

operators.

Any questions regarding the correct operation of the tool and operator safety

should be directed to Cherry®.



Do not pound on the rear of the tool head to force rivets into holes as this will damage the tool.



Do not depress the trigger while disconnecting the air bleeder and replacing the cap screw when

bleeding the tool.

HOW TO USE THE G704B

After selecting the proper pulling head and attaching it securely to the G704B, connect the air line to the tool. Insert the rivet stem
into the pulling head until the head of the rivet is in contact with the pulling head sleeve. This will ensure full engagement between
the jaws and the rivet stem and will prevent slippage.

Once the rivet stem is inserted in the H701B-456 pulling head, the rivet must be installed. The “stem stop” in the pulling head will
prevent the mandrel from moving back out the front of the head.

Insert the rivet into the application and pull the trigger to activate the tool. Upon the release of the trigger, the stem will eject to the
rear of the tool (when using the H701B-456 straight pulling head). When using the H781-456 offset pulling head, the stem will eject
through the offset pulling head to the rear. When using the H753A-456 right angle pulling head, the stem will eject out the front.

MAINTENANCE AND REPAIR

The G704B has been manufactured to give maximum service with minimum care. In order that this may be accomplished, the fol-
lowing recommendations should be followed:

1. The hydraulic system should be full of fluid and free from air at all times.

2. Keep excessive moisture and dirt out of air supply to prevent wear of air valve, air cylinder and air piston.

3. Tool should be routinely inspected for oil leaks.

Use automatic transmission fluid Type “A” (no substitutes). CHERRY recommends using Dexron® III ATF.

DEXRON III OIL SAFETY DATA

FIRST AID

Skin:

Wash thoroughly with soap and water as soon as possible. Casual contact requires no immediate
attention. If irritation develops, consult a physician.

Ingestion:

Seek medical attention immediately. DO NOT INDUCE VOMITING.

Eyes:

Flush with copious amounts of water. If irritation develops, consult a physician.

Inhalation:

No significant adverse health effects are expected to occur on short term exposure. Remove from contaminated area.

Apply artificial respiration if needed. If unconscious, consult physician.

FIRE

Suitable extinguishing media:

, dry powder, foam or water fog. DO NOT use water jets.

ENVIRONMENT

Waste Disposal:

In accordance with local, state and federal regulations.

Spillage:

Prevent entry into drains, sewers and water courses. Soak up with diatomaceous earth or other inert material. Store in

appropriate container for disposal.

HANDLING

Eye protection required. Protective gloves recommended. Chemically resistant boots and apron recommended. Use in well ventilated area.

COMBUSTIBILITY

Slightly combustible when heated above flash point. Will release flammable vapor which can burn in open or be explosive in
confined spaces if exposed to source of ignition.

STORAGE

PROPERTIES

Specific gravity

0.863

Weight per gallon

7.18 lbs.

Open flash point

>200°C (392°F)

F I L L A N D B L E E D I N S T R U C T I O N S

To replace a small amount of fluid in the tool, remove cap screw (14), attach the Cherry air bleeder (700A77), connect the tool to the air
line and cycle several times. This will ensure the removal of any air from the hydraulic system and its replacement with fluid.

Should it become necessary to completely refill the tool (such as would be required after the tool has been dismantled and reassem-
bled), take the following steps:

Remove head assembly (1) from handle (30) by
unscrewing cap screws (49).

Fill handle assembly (30) with the recommended oil to
within 1/8" (3.175mm) of the top of the handle casting.

3. Place head assembly (1) on handle (30), being sure

gasket (48), and O-ring (47), are properly in place.
Tighten cap screws (49) uniformly to prevent leakage
around gasket.

4. Attach the Cherry air bleeder (700A77). Connect the tool

to the air line and cycle a number of times. This will ensure
the removal of any air from its hydraulic system and its
replacement with fluid.

DO NOT depress trigger while disconnecting the air bleeder and replacing the cap screw (14).

T R O U B L E S H O O T I N G

1. Check the airline for correct pressure at the tool. It must be

90 to 110 psi (6.2 to 7.6 bar).

2. Check the tool for lack of fluid (see Fill and Bleed

instructions).

3. Check for oil leakage:



Fluid leaking around the cap screw (14) in the head
indicates that the screw is loose or the Stat-O-Seal (13)
needs replacing.



If fluid should leak through the by-pass hole at the base
of the handle (30) the O-rings (32) are worn or
damaged.



Fluid leaking from the front of the head (1) indicates
that O-rings (2) are worn or damaged.

4. Check for excessive air leakage from the air valve:



If spring (38) is broken or dislodged, air will

bleed directly through the bottom of the air valve and
the head piston retreats to its full stroke without
returning. See air valve instructions on page 5.



If O-ring (43) on plug (44) is worn or damaged,

replace.



If O-rings (39) on spool valve (40) are worn

or damaged, replace.



Check movement of the head piston (4). If it does not
move freely or is slow in operation:



O-rings (2), (5) and (7) may be damaged and require
replacement.



Head piston (4) may be mechanically locked due to
damaged parts.



The O-ring (34) on power piston (35) may be
damaged; replace.



Muffler (45) or air filter (41) inside valve spool (40) may be
plugged with dirt. Clean them thoroughly with normal solvent
and back-blow with compressed air.



Hole in metering screw (42) in valve spool (40) may be
blocked or damaged. Hole diameter should be .028"
(.7112 mm). Clear and size or replace valve spool
assembly (52).

5. Rivet stem sticks in the pulling head:



Pulling head components need maintenance. Disassemble
the pulling head, clean and replace worn parts.
Reassemble as per the instructions given in pulling head
tool sheets.



Spent rivet stems are wedged side by side in the head
piston (4). Disassemble the pulling head, remove stems and
reassemble by the instructions given in pulling head tool
sheets.

OVERHAUL

The disassembly and reassembly procedures
can be accomplished by following the instructions
below and the drawings on pages 8 & 9.

Use

extreme care during disassembly and
reassembly not to mar, nick or burr any
smooth surface that comes in contact with O-
rings.

Before installing O-rings, be sure to apply

an O-ring lubricant. It is recommended that
special assembly tools, which can be o r d e r e d
u n d e r p a r t n u m b e r

G701/G704KT,

used to overhaul this tool Service kit,

G704KS,

which contains a complete set of O-rings, back-
up rings, screws, washers and gaskets should be
ordered.

Not shown, but included:

701A67 Seal Guide,

702B62 Power Cylinder Tool, 703A53 Seal
Guide, 702A64 Seal Guide, and 744-103 Seal
Guide.

AI R V AL V E



Disconnect tool from air supply and remove retaining ring (46) and muffler (45). Insert a valve plug extractor (P1178) into end of
valve plug (44) and pull it out. Using the same procedures, pull out valve spool sub-assembly (52).



Use needle nose pliers to grasp the end of the spring (38), turn clockwise and pull out to dislodge from groove in handle.



With spring removed, valve sleeve (37) can be pulled out using the valve sleeve removal tool (837B700).

To reassemble, reverse the above procedures, being certain that all O-rings are properly lubricated. To avoid damaging the O-rings
(36), carefully install sleeve (37) with your finger. Gently push and wiggle sleeve to allow O-rings to slip past inner ports. Spring
(38) is best installed using a valve spring installation tool (836B700) to push the

large

diameter coil into the groove. This requires care

as the tool will not operate if the spring is not anchored firmly.

H E AD S U B - AS S E M B L Y



Disconnect tool from air supply and remove the complete pulling head from the tool before attempting to disassemble the head
assembly.



Remove the four socket head cap screws (49). Lift head assembly from the handle (30). Remove O-ring (47) and gasket (48).
Empty the oil into a container by pouring from the handle. Dispose of the oil according to environmental regulations.



Remove end cap (9). Push against threaded end of head piston (4) and slide it out of head cylinder (1). Be careful not to
damage threads or cause burrs on polished head piston rod surface.



O-rings (2) and back-up rings (3) can now be removed using a bent hook. O-ring (8) can be removed in the same manner.

Upon re-assembly, be sure to install O-rings and back-up rings carefully to avoid cutting them. Always lubricate all O-rings. Just
prior to placing the head sub-assembly on to the handle, see Fill and Bleed Instructions. Also make sure to place O-ring (47) and the
gasket (48) on the top of the handle, and that they are properly oriented.

THE G701/G704KT TOOL KIT

H AN D L E S U B - AS S E M B L Y



Disconnect tool from air supply and remove parts (23) through (27).



Place piston rod wrench (700A61) down into the top of the handle (30), into the hex socket in the head of the power piston
rod (35). While holding this wrench, remove the locknut (22) using the 7/16" socket.



Still holding the piston rod wrench, remove the air piston (21) using the packing plug wrench (700B65) by turning
counterclockwise. When air piston is completely freed from the piston rod, tap or push on the piston rod wrench to eject the
piston from bottom of handle.



Slide power piston rod (35) back up to the end of its travel. Using the packing plug wrench (700B65), remove packing
plug (18). It may be necessary to hold the handle upside down in a vise while removing the packing plug. The O-rings
(16) and backup rings (15) are best removed and replaced by using a thin bent hook.



Power cylinder (31) can be tapped out by lowering power cylinder tool (700A62) down into the top of the handle on to top of
cylinder.



To reassemble the handle, reverse the above procedure, being certain that all the O-rings are properly lubricated before
installation. Attach the seal guide (700A60) to the piston rod (35) and with a mallet, tap the piston rod through the packing
plug (18). When reassembling a replacement air piston, items (19) through (22), follow the instructions given below:



Clamp piston rod wrench (700A61) in a vise with the hex shaft pointed up.



Turn the handle upside down and place the hex end of the power piston rod (35) onto the wrench. Push handle casting down
until it stops.



Assemble seal (20) and back-up rings (19) to air piston (21).



Place the air piston (21) into handle bore. Thread the locknut (22) onto the power piston rod (35) and tighten between
50 in.-lb (5.65 N-m) and 59 in.-lb (6.67 N-m).

G 7 0 4 B P U L L I N G H E A D S

Pulling Heads are not furnished with riveter and must be ordered separately.

On the first stroke. 2. Nominal and oversize. 3. No 3/16 aluminum, alloy steel and monel only. 4. Serrated stems only.

See H782 tool sheet for complete list of fastener compatibility.

FOR MOUNTING AND OPERATING INSTRUCTIONS SEE PULLING HEAD TOOL SHEETS.

Pulling Head

Type

Adapter

Rivet

Rivet Diameters

Maximum Grip

CherryMAX Bulb

1/8, 5/32, 3/16

2,3

All

CherryMAX “AB”

1/8, 5/32, 3/16

-4

H701B-456

Straight

MBC L/C

1/8, 5/32, 3/16

-4

CherryMAX Bulb

1/8, 5/32, 3/16

2,3

All

H753A-456

Right Angle

CherryMAX “AB”

1/8, 5/32, 3/16

-4

CherryMAX Bulb

1/8, 5/32, 3/16

2,3

All

H781-456

Offset

CherryMAX “AB”

1/8, 5/32, 3/16

-4

H9015-Series

Straight

704A9

3/32, 1/8, 5/32, 3/16

All

H955-Series

Straight

CherryLock “A”

3/32, 1/8, 5/32, 3/16

-4

CherryMAX Bulb

1/8, 5/32, 3/16

2,3

All

CherryMAX “AB”

1/8, 5/32, 3/16

-4

H782

Straight

MBC L/C

1/8, 5/32, 3/16

-4

C R O S S S E C T I O N O F G 7 0 4 B

ITEM NO.

DESCRIPTION

QTY.

704B35 SUB-ASSEMBLY, HEAD

704C19 SUB-ASSEMBLY, HEAD CYLINDER

704C18 CYLINDER, HEAD

704B2-2 FITTING, NOSE

P-701

O-RING (.629, .489, .070)

P-998

RING, BACK-UP (.609, .503, .053)

704C3

PISTON, HEAD

P-931

O-RING (1.193, .987, .103)

P-1000

RING, BACK-UP (1.176, 1.000, .088)

P-870

O-RING (1.191, 1.051, .070)

P-112

O-RING (.504, .364, .070)

704B4

CAP, HEAD CYLINDER

P-880

RING, RETAINING (NON-STANDARD)

703A13

FITTING, DEFLECTOR

530A16

DEFLECTOR, PIN

P-572

STAT-O-SEAL (.443, .180, .132)

P-573

SCREW, BUTTON HD. SOC. 10-32 x 1/4

704-086 SUB-ASSEMBLY, HANDLE

P-838**

O-RING, DISOGRIN (.568, .362, .103)

P-115

RING, BACK-UP (.551, .375, .088)

P-727

O-RING (1.318, 1.112, .103)

700B93

PLUG, PACKING

P-731

RING, BACK-UP (3.387, 3.109, .139)

P-730

RING, QUAD (3.387, 3.109, .139)

700B6

PISTON, AIR

P-737

NUT, CONELOK, 1/4-20

P-725

O-RING (3.129, 2.989, .070)

700B4

BASE, HANDLE

P-735

RING, RETAINING (INT. Ø3.500)

700D107

COVER, BASE

P-736

RING, RETAINING (EXT. Ø2.250)

703A33

ASSEMBLY, TRIGGER (INCLUDES P-223)

P-223

O-RING (.285, .145, .070)

703A11

HANDLE

700-247

CYLINDER, POWER

P-833**

O-RING, DISOGRIN (1.068, .862, .103)

P-739

RING, BACK-UP (.614, .518, .056)

P-830**

O-RING, DISOGRIN (.629, .489, .070)

700-248

ROD, POWER PISTON

P-653

O-RING (.691, .551, .070)

700B96

SLEEVE, VALVE

700A67

SPRING

P-829**

O-RING, DISOGRIN (.504, .364, .070)

700A94

SUB-ASSEMBLY, VALVE SPOOL

700B95 SPOOL, VALVE

700A18 FILTER

700A69 SCREW, METERING

P-834**

O-RING, DISOGRIN (.816, .676, .070)

700A16

PLUG, VALVE

700A17

MUFFLER

P-279

RING, RETAINING (INT. Ø.906)

P-832**

O-RING, DISOGRIN (.379, .239, .070)

700A22

GASKET

P-27

SCREW, SOC. HD. CAP, 8-32 x 1/2

670A20*

BAG, MANDREL CATCHER

P-948*

HOSE, AIR

*Not furnished with riveter. Must be ordered separately if desired.
**No substitutions.
Note: Use Loctite #271 or equivalent when assembling items 1 and 1A.
All dimensions in inches.

PART LIST FOR THE G704B (704-087) CHERRYMAX RIVETER ASSEMBLY

E X P L O D E D V I E W O F G 7 0 4 B

1224 East Warner Ave,

Santa Ana, Ca 92705

Tel: 1-714-545-5511

Fax: 1-714-850-6093

www.cherryaerospace.com

Seller warrants the goods conform to applicable specifications and drawings and will be manufactured and inspected according to generally accepted practices of
companies manufacturing industrial or aerospace fasteners. In the event of any breach of the foregoing warranty, Buyer’s sole remedy shall be to return defective
goods (after receiving authorization from Seller) for replacement or refund of the purchase price, at the Seller’s option. Seller agrees to any freight costs in
connection with the return of any defective goods, but any costs relating to removal of the defective or nonconforming goods or installation of replacement goods
shall be Buyer’s responsibility. SELLER’S WARRANTY DOES NOT APPLY WHEN ANY PHYSICAL OR CHEMICAL CHANGE IN THE FORM OF THE
PRODUCT IS MADE BY BUYER.
THE FOREGOING EXPRESS WARRANTY AND REMEDY ARE EXCLUSIVE AND ARE IN LIEU OF ALL OTHER WARRANTIES AND REMEDIES;
ANY IMPLIED WARRANTY AS TO QUALITY, FITNESS FOR PURPOSE, OR MERCHANTABILITY IS HEREBY SPECIFICALLY DISCLAIMED AND
EXCLUDED BY SELLER. THIS WARRANTY IS VOID IF SELLER IS NOT NOTIFIED IN WRITING OF ANY REJECTION OF THE GOODS WITHIN ONE
(1) YEAR AFTER INITIAL USE BY BUYER OF ANY POWER RIVETER OR NINETY (90) DAYS AFTER INITIAL USE OF ANY OTHER PRODUCT.

Seller shall not be liable under any circumstances for incidental, special or consequential damages arising in whole or in part from any breach by Seller, AND SUCH
INCIDENTAL, SPECIAL, OR CONSEQUENTIAL DAMAGES ARE HEREBY EXPRESSLY EXCLUDED.

Declaration of Conformity

We, Cherry Aerospace, 1224 E. Warner Ave., Santa Ana, CA 92705

declare under our sole responsibility that the product

type G704B

Serial No.-

to which this declaration relates is in conformity with the following standards

EN292 part 1 and part 2

ISO 8662 Part 1

ISO 3744

following the provisions of the Machine Directive 89/392/EEC

(as amended by Directive 91/368/EEC) and 93/68/EEC

Supplier’s Federal Identification Code: 11815

TM-G704B

Rev.: A

Date: 02/05/07

DCR# 06-0786

For more information please contact our Technical Services Department at Tel. 714-850-6022

Santa Ana, CA

date of issue

Original Certification and signature on file

LOCTITE

is a registered trademark of Henkel Corporation

DEXRON

is a registered trademark of GM corporation.

PARKER

is a trademark of Parker Hannifin Corporation

LUBRRIPLATE

is a trademark of Fiske Brothers Refining Co.

WARRANTY