Greenlee 773 Manual de usuario

INSTRUCTION MANUAL

Read and understand all of the instructions and

safety information in this manual before operating

or servicing this tool.

773 and 774

Ratchet Cable Cutters

773 and 774 Ratchet Cable Cutters

Greenlee / A Textron Company 24455 Boeing Dr. • Rockford, IL 61109-2988 USA • 815-397-7070

Description ..................................................................... 2

Purpose of this Manual .................................................. 2

Important Safety Instructions ......................................3-4

Identication................................................................... 5

Specications................................................................. 5

Operation........................................................................ 6

Maintenance

General..................................................................... 7

Cleaning the cutter................................................... 7

Lubricating the cutter............................................... 7

Disassembly ................................................................... 8

Assembly...................................................................9-11

Illustration..................................................................... 12

Parts List .................................................................13-14

Table of Contents

Description

Greenlee 773 and 774 Ratchet Cable Cutters are

non-insulated cutting tools intended for use on copper

and standard aluminum electrical cable. The 773 will

accommodate up to 500 Kcmil copper or 795 Kcmil

aluminum cable. The 774 will cut up to 750 Kcmil

copper or 795 Kcmil aluminum cable.

Both cable cutters ratchet and are equipped with ber-

glass handles and rubber grips to limit operator fatigue.

They are not intended for use on ACSR (aluminum

cable, steel-reinforced) cable.

The Greenlee 773 and 774 Ratchet Cable Cutters are

protected by U.S. Patent No. 6,766,581.

Purpose of this Manual

This instruction manual is intended to familiarize

personnel with the safe operation and maintenance

procedures for the Greenlee 773 and 774 Cable Cutters.

Keep this manual available to all personnel.

Replacement manuals are available upon request

at no charge at www.greenlee.com.

Safety is essential in the use and maintenance of

Greenlee tools and equipment. This instruction manual

and any markings on the tool provide information for

avoiding hazards and unsafe practices related to the

use of this tool. Observe all of the safety information

provided.

KEEP THIS MANUAL

All specications are nominal and may change as design improve-

ments occur. Greenlee Textron Inc. shall not be liable for damages

resulting from misapplication or misuse of its products.

Molykote is a registered trademark of Dow Corning Corporation.

Loctite is a registered trademark of Loctite Corporation.

Safety

773 and 774 Ratchet Cable Cutters

Greenlee / A Textron Company 34455 Boeing Dr. • Rockford, IL 61109-2988 USA • 815-397-7070

Read and understand all of the

instructions and safety information

in this manual before operating or

servicing this tool.

Failure to observe this warning could

result in severe injury or death.

This symbol is used to call your attention to

hazards or unsafe practices which could result in

an injury or property damage. The signal word,

dened below, indicates the severity of the hazard.

The message after the signal word provides infor-

mation for preventing or avoiding the hazard.

Hazards or unsafe practices which, if not avoided,

MAY result in injury or property damage.

Hazards which, if not avoided, COULD result in

severe injury or death.

Immediate hazards which, if not avoided, WILL

result in severe injury or death.

SAFETY

ALERT

SYMBOL

IMPORTANT SAFETY INFORMATION

773 and 774 Ratchet Cable Cutters

Greenlee / A Textron Company 44455 Boeing Dr. • Rockford, IL 61109-2988 USA • 815-397-7070

IMPORTANT SAFETY INFORMATION

•

This tool is intended for two-handed operation.

Maintain a rm grip on both handles during

operation.

• Do not cut ACSR or steel.

• Do not exceed the rated capacity of this tool.

• Inspect before use. Replace any worn or

damaged parts.

• Do not perform any service or maintenance other

than as described in this manual.

Failure to observe these precautions may result in

injury or property damage.

Pinch points:

Keep hands away from moving

parts.

Wear eye protection when using this

tool. Failure to wear eye protection

could result in serious eye injury

from ying debris.

Keep hands away from closing

blades.

Electric shock hazard:

This tool is not insulated. Do not use

this tool near energized electrical

lines.

Failure to observe this warning could

result in severe injury or death.

773 and 774 Ratchet Cable Cutters

Greenlee / A Textron Company 54455 Boeing Dr. • Rockford, IL 61109-2988 USA • 815-397-7070

Speciﬁcations

773 774

Mass/Weight........................................................................................ 2.4 kg (5.3 lb) .............................. 2.6 kg (5.8 lb)

Length................................................................................................394 mm (15.5")..........................486 mm (19.125")

Width

at blades ..................................................................................127 mm (5.0") ...............................127 mm (5.0")

at handles ..............................................................................132 mm (5.19") ..................................152 mm (6")

Thickness ............................................................................................68.5 mm (2.7")...............................68.5 mm (2.7")

Jaw opening (minimum) .....................................................................30 mm (1.188")..............................30 mm (1.188")

Handle force at Maximum Copper Capacity...........................................289 N (65 lb)..................................267 N (60 lb)

Maximum-Rated Capacity

Copper (600-Volt Building Wire) ................................................ 240 mm2(500 Kcmil)..................... 400 mm2(750 Kcmil)

Aluminum (600-Volt Building Wire)............................................ 400 mm2(795 Kcmil)..................... 400 mm2(795 Kcmil)

Communications Cable ............................................................. 30 mm (1.188") O.D...................... 30 mm (1.188") O.D.

Frequent Use

Copper (600-Volt Building Wire) ................................................ 150 mm2(350 Kcmil)..................... 240 mm2(500 Kcmil)

Aluminum (600-Volt Building Wire)............................................ 400 mm2(750 Kcmil)..................... 400 mm2(750 Kcmil)

Communications Cable ............................................................. 30 mm (1.188") O.D...................... 30 mm (1.188") O.D.

Identiﬁcation

Stationary

blade

Movable

blade

Speed

Pawl

Link

Movable

handle

Grips

Stationary

handle

Release

knob

773 and 774 Ratchet Cable Cutters

Greenlee / A Textron Company 64455 Boeing Dr. • Rockford, IL 61109-2988 USA • 815-397-7070

Operation

• This tool is intended for two-handed operation.

Maintain a rm grip on both handles when using

this tool.

• Inspect before use. Replace any worn or

damaged parts.

Failure to observe these precautions may result in

injury or property damage.

Electric shock hazard:

This is not an insulated tool.

Contact with live circuits could

result in severe injury or death.

Wear eye protection when using this

tool. Failure to wear eye protection

could result in serious eye injury

from ying debris.

1. Check to see that the release knob is against the link.

2. Place the cable to be cut between the cutting

blades.

3. Open and close the handles until the cable is cut.

Note: The automatic rapid advance mechanism will

advance the movable blade by 3 teeth each time

the handle is opened. The blade advances 1 tooth

for each closing of the handle. The rapid advance

mechanism is spring loaded to disengage when

maximum leverage is needed to cut the cable.

4. When the cut is complete, the automatic blade

mechanism automatically returns the blade to the

open position and resets the reverse lever to cut

cable.

Note: To open the blade before the cut is complete,

move the release knob away from the link and press

the handles together. The blade spring will return the

release knob

engage link

release knob

disengage

link

773 and 774 Ratchet Cable Cutters

Greenlee / A Textron Company 74455 Boeing Dr. • Rockford, IL 61109-2988 USA • 815-397-7070

Maintenance

General

Maintain the tool with care. Keep the blades sharp

and the tool clean for better and safer performance.

Follow instructions for lubricating the cutter; lubrication

prolongs the tool life and enables the tool to cut with

less force. Keep grips dry, clean and free from oil and

grease.

Note: The blade pivot lock nut (23) may require tighten-

ing after making several initial cuts on a new or repaired

unit. Always maintain proper adjustment on all pivot

screws. For adjustment procedures, see Assembly—

Tighten pivot screws.

Cleaning the cutter

Blow dirt and/or cable particles out of the ratchet

mechanism with compressed air.

Lubricating the cutter

Close the blades and apply Molykote lubricant or

equivalent between the blades. Lubricate the teeth on

holding pawl (6) and drive pawl (7). Lubricate the four

pivot shoulder screws (13, 16 and 17) and area between

pivoting surfaces. Operate the cutter to spread the

lubricant.

Disassemble, clean, and lubricate the tool if it does not

operate smoothly.

Wear eye protection when using this

tool. Failure to wear eye protection

could result in serious eye injury

from ying debris.

Pinch points:

Keep hands away from moving

parts.

Keep hands away from closing

blades.

Lubrication points

—use Molykote

773 and 774 Ratchet Cable Cutters

Greenlee / A Textron Company 84455 Boeing Dr. • Rockford, IL 61109-2988 USA • 815-397-7070

Disassembly

This tool consists of three subassemblies: the cutter

head, stationary handle, and movable handle sub-

assemblies (see gure).

1. Cutter head assembly: movable blade (1), stationary

blade (2), release lever (3), links (4), spring cover

(10), reverse lever pin (12), spring (37), bushing (29),

return spring (36), shoulder screw (17) and related

hardware.

2. Stationary handle assembly: handle unit (39), handle

plates (5), holding pawl (6), torsion spring (40),

shoulder screw (16) and related hardware.

3. Movable handle assembly: handle unit (38), handle

plates (8 and 9), speed pawl (11), spring (35), drive

pawl (7), shoulder screws (13 and 16) and related

hardware.

The disassembly procedure is divided into sections of

the tool. Disassemble only the section(s) necessary to

complete the repair.

Disassemble the tool on a at, clean surface. Take care

not to lose or damage any parts that may fall free during

disassembly.

Cutter head

1. Open the movable blade to release tension on the

blade return spring (36).

2. Remove two shoulder screws (16) and remove the

cutter head assembly from the handle assemblies.

Note: Holding pawl (6), torsion spring (40), drive

pawl unit (7), washer (22) and spacer (19) may fall

free during disassembly.

3. Remove shoulder screw (17), spacers (27 and 20),

links (4), release lever (3) and bushing (29).

4. Remove screw (15) and separate cover (10) from

stationary blade (2).

5. Remove screw (41) and spring (36).

Stationary handle

6. Remove shoulder screw (13) and movable handle

assembly.

7. Remove two screws (30) and stationary handle

plates (5).

Movable handle

8. Remove two screws (31), left handle plate (8), right

handle plate (9), speed pawl (11) and spring (35).

cutter head

assembly

movable handle

assembly

stationary handle

assembly

773 and 774 Ratchet Cable Cutters

Greenlee / A Textron Company 94455 Boeing Dr. • Rockford, IL 61109-2988 USA • 815-397-7070

Assembly

Refer to the Exploded View and Parts List for correct

orientation and placement of parts.

Inspect and replace

any worn or damaged parts. Wherever

the assembly

results in metal-to-metal contact, coat the surfaces with

Molykote or equivalent lubricant.

Cutter head

1. Apply Loctite 680 retaining compound to two dowel

pins (32) and install into movable blade, if necessary.

The dowel pins should be ush with the at side of

the blade. Remove excess Loctite.

2. Apply Loctite 271 thread adhesive to screw (41)

and install screw through end of spring (36) and into

movable blade. Adjust until end of screw is ush

with the angled side of the blade. Allow Loctite to

cure for 10 minutes and remove excess adhesive.

3. Install roll pin (14) into stationary blade (2), if

necessary.

4. Install end of spring (36) over roll pin (14) and

assemble spacer (25), and cover (10). Apply Loctite

242 thread adhesive to screw (15) and assemble

to stationary blade (2). Roll pin (14) should be ush

with top of cover (10).

Install optional screw guide (46) onto shoulder screw

(17) to help guide the screw through components.

6. Lubricate components and assemble shoulder

screw (17), two links (4), bushing (29), reverse lever

(3), movable blade (1), stationary blade (2), spacer

(20), cover (10), link (4), spacer (27)—with counter-

bore toward link. Remove optional guide (46) if used

and install lock nut (23). Tighten lock nut so gap

between blades does not exceed .004 inches.

Stationary handle

7. Assemble handle plates (5) to handle unit (39),

but do not tighten hex screws (30).

8. Insert shoulder screws (13 and 16) to align handle

plates (5) and tighten hex screws (30) to 170-190

in-lb. Remove shoulder screws.

Movable handle

9. Assemble right and left handle plates (8 and 9) to

handle unit (38), but do not tighten hex screws (31).

Orient handle plates so slotted hole is opposite the

chamfer in the handle adapter.

slot

chamfer 38

427 23

Apply Loctite 680

Apply Loctite 242

Apply Loctite 271

(optional)

10. Install roll pin (34) into right and left handle plates.

11. Install roll pin (33) into speed pawl (11), if necessary.

The roll pin should protrude .20 inches from each

side of the speed pawl.

12. Install spring (35) between handle plates.

13. Spread the right and left handle plates and install

speed pawl so the roll pin ts into the slot in the

handle

plates. Use the speed pawl to compress

spring (35).

.20"

14. Insert shoulder screws (13 and 16) to align handle

plates and tighten hex screws (31) to 170-190 in-lb.

Remove shoulder screws.

773 and 774 Ratchet Cable Cutters

Greenlee / A Textron Company 10 4455 Boeing Dr. • Rockford, IL 61109-2988 USA • 815-397-7070

Assembly (cont’d)

Movable handle to stationary handle

15. Install movable handle assembly between the

stationary handle plates and align the 3/8" pivot

holes.

16.

Install optional screw guide (46) onto shoulder screw

(13) to help guide the screw through components.

17. Lubricate shoulder screw (13) and install it through

the handle plates (5 and 8), handle plates (9 and

5) and spacer (26). Remove guide (46) if used and

install lock nut (23).

Cutter head to stationary handle

18. Install torsion spring (40) onto holding pawl (6)

and locate them between the handle plates on the

stationary handle (39) as shown.

19. Install head assembly between handle plates on the

stationary handle and around the holding pawl (6).

20. Install optional screw guide (47) onto shoulder screw

(16) to help guide the screw through components.

21. Lubricate shoulder screw (16) and install it through

link (4), handle plate (5), torsion spring (40), holding

pawl (6), stationary blade (2), second handle plate (5),

cover (10) and spacer (19). Remove guide (47)

if used and thread on lock nut (24), but do not

tighten.

(optional)

Note:

Ends of torsion spring should be

against handle and pawl as shown.

stationary handle

assembly

movable handle

assembly

(optional)

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