Cherry GH-702A Maintenance Manual
GH-702A
Lightweight Power Tool
MAINTENANCE MANUAL
1224 East Warner Ave,
Santa Ana, Ca 92705
Tel: 1-714-545-5511
Fax: 1-714-850-6093
www.cherryaerospace.com
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THE GH-702A TOOL
TABLE OF CONTENTS
Description ...........................................................................................................................................1
Specifications For GH-702A ...................................................................................................................................................1
Safety Warnings ......................................................................................................................................................................2
How To Use The GH-702A .................................................................................................................3
Maintenance And Repair ........................................................................................................................................................ 3
Fill And Bleed Instructions ...................................................................................................................4
Trouble Shooting .................................................................................................................................4
Overhaul ...............................................................................................................................................5
Air Valve .....................................................................................................................................................................5
Head Sub-Assembly ..................................................................................................................................................5
Handle Sub-Assembly ...............................................................................................................................................6
Pulling Heads .......................................................................................................................................6
Installing Pulling Heads .............................................................................................................................................7
Cross Section Drawing Of GH-702A ...................................................................................................................................... 8
Parts List For GH-702A Riveter ..........................................................................................................9
Exploded View Of GH-702A .................................................................................................................................................10
Declaration Of Conformity ......................................................................................................................................Back Cover
DESCRIPTION
The Cherry GH-702A is a pneumatic-hydraulic tool designed
specifically for the most efficient installation of
commercial fasteners. Its durable, all metal housing makes
this extremely robust tool ideal for use in rugged shop
environments. It has many ergonomic features: very light
weight, comfortable fit in the operator's hand and it can be
operated in any position with one hand.
SPECIFICATIONS FOR GH-702A
Cherry Aerospace's 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 Aerospace.
IR PRESSURE 90 PSI (6.2 bar) Min. / 110 PSI (7.6 bar) Max.
STROKE .75 inch (19 mm)
PULLING FORCE 1100 Pounds (4.9 kN) @ 90 PSI (6.2 bar)
CYCLE TIME Approximately One Second
WEIGHT 3.5 Pounds (1.59 kg)
NOISE LEVEL 65 dB (A)
VIBRATION less than 2.5 m/s2
IR CONSUMPTION .066 SCF/cycle (1.87 L/cycle)
The GH-702A comes equipped with
nosepiece 728A9-4, included for
setting:
N Rivets - 1 /8” diameter
Q Rivets - 1 /8” diameter
Cherrymate® Rivets- 3/16” diameter
There is also a spare nosepiece
728A9-6 to set:
N Rivets - 3/16” diamete
Q Rivets - 3/16” diamete
Cherrymate® Rivets - 1 /4” diamete
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SAFETY WARNINGS
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 d ef l ec t or should be ro t a te d u nt i l the a p er t ur e i s f ac i n g a w ay
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 Aerospace,
or their representatives, shall be the customer's entire responsibility. Cherry Aerospace 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 Aerospace installation tools. Contact Cherry Aerospace
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 oil sho uld be a vo id ed to mi ni mi ze 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 (25) is fully secured by the retaining rings (26) and (28) and
base cover (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 Aerospace.
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.
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HOW TO USE THE GH-702A
After selecting the proper pulling head and attaching it securely to the GH-702A, conn ect 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 engag ement
between the jaws and the rivet stem and will prevent slippage.
Once the rivet stem is inserted in the pulling head, the rivet must be installed. 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.
MAINTENANCE AND REPAIR
The GH-702A has been manufactured to give maximum service with minimum care. In order that this may be accomplished, the
following recommendations should be followed:
1. The hydraulic system should be full of oil 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 Aerospace recommends using ATF, Dexron III oil.
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.
FIRE
Suitable extinguishing media: CO2, 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
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.
Apply artificial respiration if needed. If unconscious, consult physician.
appropriate container for disposal.
STORAGE
Avoid storage near open flame or other sources of ignition.
PROPERTIES
Specific gravity 0.863
Weight per gallon 7.18 lbs.
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