Cherry GH-780 Maintenance Manual

GH-780

Pneumatic Power Riveter

MAINTENANCE MANUAL

1224 East Warner Ave,

Santa Ana, CA 92705

Tel: [phone]

Fax: [phone]

www.cherryaerospace.com

THE GH-780 POWER RIVETER

TABLE OF CONTENTS

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

Specifications for GH-780..................................................3

Safety Warnings.................................................................3

How to use the GH-780 .....................................................4

Maintenance and Repair ...................................................4

Trouble Shooting................................................................4

Overhaul.............................................................................4

Air Valve..................................................................4

Housing ...................................................................5

H703 & H743A Pulling Heads ...........................................5

Cross Sectional Drawing of GH-780 Power Riveter.........6

Parts List for the GH-780 Power Riveter...........................7

Exploded View of GH -780 .................................................7

Limited Warranty...............................................Back Cover

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DESCRIPTION

The Cherry® GH-780 is a pneumatic tool designed sp ecifically
for the most efficient installation of Commercial fasteners. It
weighs only 3 pounds and can b e operated in any positi on with
one hand.

SPECIFICATIONS FOR GH-780

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.

AIR PRESSURE 90 PSI (6,2 bar) Min./120 PSI (8,3 bar) Max.
STROKE 1.125" (28,6 mm)
PULLING FORCE 1100 lbs. (4,95 kN) @ 90 PSI (6,2 bar)
CYCLE TIME Approximately One Second
WEIGHT* 2.9 Pounds (1,32 kg)
NOISE LEVEL 65 Db (A)

VIBRATION Less than 2,5 m/s
AIR CONSUMPTION 0.10 SCF/cy cl e ( 2 ,8 3 L /cycle)

*without pulling head

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SAFETY WARNINGS

• Operating this tool with a damaged or missing stem defle c­tor, or using the deflector as a handle, may result in severe
personal injury. The pin deflector should be rotated until t he
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 compon ents for repair.

• Any modification to the tool, pulli ng 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 disassemblin g 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 all hoses are always in good condition.

• Operating air pressure should not exceed 120 psi (7,6 bar)

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

• Do not operate the tool un less the nose plate (4) is fully

secured by the retaining ring (3).

• All retaining rings, screwed end caps, air fittings, hoses,
hose fittings, trigger valves and pulling heads should be
attached securely and examined at the end of each working
shift.

• Do not pull fast eners in the air.

• The precautio ns to be used when using this tool must be

explained by the customer to all operators. Any question
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 fasteners
into holes as this will dama

e the tool.

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