Greenlee 750 User manual

INSTRUCTION MANUAL
999 6443.0 © 2001 Greenlee Textron IM 825 REV 11 6/01
For additional copies
at no charge
order 999 6443.0
Read and understand all of the instructions and
safety information in this manual before operating
or servicing this tool.
750
CABLE CUTTER

Greenlee Textron / Subsidiary of Textron Inc. 24455 Boeing Dr., Rockford, IL 61109-2988 815/397-7070
750 Cable Cutter
Purpose..........................................................................2
Safety Information..........................................................3
Setup..............................................................................4
Operation .......................................................................4
Converting a 746 hydraulic ram to a 750 cable cutter...4
Maintenance ..................................................................5
Parts............................................................................6-7
Parts List ........................................................................8
Table of Contents
SAVETHESE INSTRUCTIONS
Description
The 750 Cable Cutter is a hydraulic cable cutter with
hardened and precision-ground jaws designed to cut
large cable.
The capacity of this tool is 1000 MCM standard copper
or aluminum power cable and 1000 mcm underground
million jacketed cable (260 mil/2.25 dia.)
Purpose
This instruction manual is intended to familiarize
personnel with the safe operation and maintenance
procedures for 750 Cable Cutter.
Keep this manual available to all personnel.
Replacement manuals are available upon request
at no charge.
and are registered trademarks of
Greenlee Textron.
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.
Safety

Greenlee Textron / Subsidiary of Textron Inc. 34455 Boeing Dr., Rockford, IL 61109-2988 815/397-7070
750 Cable Cutter
IMPORTANT SAFETY INSTRUCTIONS
Skin Injection Hazard:
Oil under pressure easily punctures
skin, causing serious injury, gan-
grene or death. If you are injured by
escaping oil, seek medical attention
immediately.
• Hand-tighten all couplings com-
pletely before operating the
pump. All threads must be
engaged. Do not use tools to
tighten the couplings.
• Do not use fingers or hands to
check for leaks while operating
the pump.
• Do not hold hose or couplers
while operating the pump.
• Depressurize hydraulic system
before disconnecting hoses or
couplers, and before servicing.
Electric Shock Hazard:
This tool is not insulated. Contact
with live circuits can result in severe
injury or death.
Keep hands away from cutting jaws.
• Use only Greenlee-supplied hoses and couplers.
• Do not cut cable under tension.
• Follow instructions and safety information sup-
plied with pump.
Failure to observe these warnings can result in
severe injury or death.
Wear eye protection when operating
or servicing this tool.
Failure to wear eye protection can
result in serious eye injury from
flying debris or hydraulic oil.
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, defined below,
indicates the severity of the hazard. The message
after the signal word provides information for prevent-
ing 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
Read and understand all of the
instructions and safety information
in this manual before operating or
servicing this tool.
Failure to observe this warning will
result in severe injury or death.

Greenlee Textron / Subsidiary of Textron Inc. 44455 Boeing Dr., Rockford, IL 61109-2988 815/397-7070
750 Cable Cutter
Keep hands away from cutting jaws.
Electric Shock Hazard:
This tool is not insulated. Contact
with live circuits can result in severe
injury or death.
Setup
Connect the high-pressure hydraulic hose to hydraulic
pump.
Note: Clean the quick-change couplers before making
connections. Hand-tighten the couplers until all
threads are fully engaged. Do not use tools.
Operation
1. Place the cable to be cut between the jaws.
2. Turn the pump knob to PUMP. Pump the lever until
cable is cut completely.
Note: If using an electric pump, follow the instructions
that came with the pump.
3. To open the jaws, turn the pump knob to RELEASE.
Converting a Greenlee Model 746
Hydraulic Ram to a Greenlee Model
750 Cable Cutter
To use your Greenlee Model 746 Hydraulic Ram to cut
cable, see the following instructions to combine the 746
with a Greenlee Model 751 Cutter Head Unit.
Assembly
1. Remove the draw stud from the 746 ram unit.
2. Insert the ram into the cutter head unit. Thread the
751’s draw stud into the 746 ram.
3. Turn the 746 clockwise until the jaw opening
measures 1.96 inches. See Figure 1.
4. Tighten the set screw (30).
5. Connect the 746 ram to any Greenlee pump, such
as the following models:
755 Hand Pump
767 Hand Pump
1725 Foot Pump
960 Electric Pump
975 Electric Pump
980 Electric Pump
Note: Use only Greenlee hoses and couplers.
6. Using the instructions supplied with the pump,
advance the ram to close the cutter jaws.
7. Check for a minimum blade overlap of 0.030 inches
on centerline prior to the end of the ram stroke.
See Figure 2.

Greenlee Textron / Subsidiary of Textron Inc. 54455 Boeing Dr., Rockford, IL 61109-2988 815/397-7070
750 Cable Cutter
Maintenance
Keep all parts clean and lubricated with a light coat
of moly-filled grease. Periodically check the open jaw
dimension (2.25 inches between the jaws) and closed
jaw dimension (0.030 inches minimum overlap on
centerline). Inspect blades for wear or nicks and replace
if necessary.
Troubleshooting
If the jaws cannot be adjusted to an opening of 2.25":
1. Check hydraulic fluid level. Add fluid if necessary.
2. Inspect the cutter jaw pin (10). Replace cutter jaw
pin if it is bent or broken.
If the cutter jaws do not overlap at least 0.030 inches on
centerline:
1. Remove and inspect roller pins (5). Replace if worn
or damaged.
2. Remove and inspect pins (10). Replace if worn or
damaged
3. Replace the cutter jaws (3).
If the cutter jaws do not open properly, see the dis-
assembly, repair, cleaning, and lubricating instructions
under Disassembly and Reassembly.
MINIMUM OVERLAP ON ________
_
2.25
Disassembly and Reassembly
1. Turn the set screw (30) counterclockwise.
2. Unscrew the body (1) of the 751 from the ram (B).
3. Drive the two pins (10) out of the body, and pull the
yoke pin (4) from the yoke (1).
4. Check the yoke (2) and the body (1) for galling.
Remove small nicks and scratches with a fine
cutting file.
Note: Remove as little material as possible. Removing
too much will cause the jaws to spread, resulting
in incomplete cutting action.
5. Clean the parts by loosening grit and particles of
metal with a small brush.
6. Replace any other parts that show signs of wear or
damage.
7. Lubricate the contact surfaces of all moving parts
with a light coat of moly-filled grease.
8. Insert the shaft (13) into the yoke (2). Turn the shaft
clockwise until it is flush with the radius in the yoke.
9. Place a few drops of grade CV Locktite onto the set
screw (9) and tighten the set screw.
10. Insert the yoke pin (4) into the yoke (1).
11. Insert the two pins (10) into the body.
12. Insert the ram into the cutter head unit. Thread the
746 onto the draw stud.
13. Turn the 746 clockwise until the jaw opening
measures 1.96 inches. See Figure 1.
14. Tighten the set screw (30).
Figure 1 Figure 2
Wear eye protection when operating
or servicing this tool.
Failure to wear eye protection can
result in serious eye injury from
flying debris or hydraulic oil.

Greenlee Textron / Subsidiary of Textron Inc. 64455 Boeing Dr., Rockford, IL 61109-2988 815/397-7070
750 Cable Cutter
310465872 113 30
A
B
9
SERIAL NUMBER
LOCATION
24
28A
27 29
F
28
25
25
24 26
E
31
Parts

Greenlee Textron / Subsidiary of Textron Inc. 74455 Boeing Dr., Rockford, IL 61109-2988 815/397-7070
750 Cable Cutter
13
18
22
12
11
19
21
20
15
14
A
23
16 B
17
B

Printed in the U.S.A.
Greenlee Textron / Subsidiary of Textron Inc.
4455 Boeing Drive, Rockford, IL 61109-2988 USA
Customer Service (International): 815/397-7070 • Fax: [phone]
Customer Service (North America): 800/435-0786 • Fax: [phone]
Canada Fax: [phone]
UPC No.
Key 78-3310- Description Qty.
A 502 2279.1 Cutter Head 751 (includes #1-10 & 13)..................................................... 1
1 503 2890.5 Body ........................................................................................................... 1
2 501 7869.5 Yoke ........................................................................................................... 1
3 501 7459.2 Cutter Jaw .................................................................................................. 2
4 501 7460.6 Yoke Pin ..................................................................................................... 1
5 503 2936.7 Roller Pin ................................................................................................... 2
6 501 7462.2 Roller.......................................................................................................... 2
7 905 0283.3 Retaining Ring............................................................................................ 2
8 905 1379.7 Retaining Ring............................................................................................ 4
9 905 2233.8 Screw, 1/4-20 NC x 3/8 Cup Pt. Skt. Set ................................................... 1
10 905 3623.1 Pin, 1/4 x 1-1/2 .......................................................................................... 2
B 503 7985.2 Hydraulic Ram (includes #11-23).............................................................. 1
11 501 7093.7 Piston ......................................................................................................... 1
12 501 7095.3 Cylinder ...................................................................................................... 1
13 501 7453.3 Shaft........................................................................................................... 1
14 501 1251.1 Compression Spring .................................................................................. 1
15 501 1253.8 Retainer...................................................................................................... 1
16 905 4167.7 Quick-Coupler, 1/4 Female Half ................................................................. 1
17 905 4168.5 Protective Plug........................................................................................... 1
18 905 0338.4 O-Ring, 7/8 x 1-1/8 x 1/8 ........................................................................... 1
19 905 0389.9 O-Ring, 2 x 2-3/8 x 3/16 ............................................................................ 1
20 905 0390.2 Retaining Ring............................................................................................ 2
21 905 0832.7 Backup Ring, 2 x 2-3/8 x 3/16 ................................................................... 1
22 905 1339.8 Backup Ring, 7/8 x 1-1/8 x 1/8 .................................................................. 1
23 905 4188.0 Elbow, Street, 90˚ x 1/4 NPTF Pipe ............................................................ 1
C 501 3284.9 Hydraulic Hand Pump model 767 (see Parts List IM 727)........................ 1
D 503 3516.2 Hydraulic Power Pump model 975 (see Parts List IM 1021) .................... 1
E 503 8316.7 Hose Unit (includes #24-26)...................................................................... 1
F 501 7707.9 Hose Unit (includes #24-25, 27-29) .......................................................... 1
24 905 4169.3 Quick-Coupler, 1/4 Male Half..................................................................... 1
25 905 4170.7 Protective Cap ............................................................................................ 1
26 905 0386.4 High Pressure Hose, 1/4 x 3 ...................................................................... 1
27 905 0426.7 Steel Reducing Bushing, 3/8" x 1/4" .......................................................... 1
28 905 0823.8 Quick-Coupler, 3/8 Male Half with Dust Cap ............................................. 1
28A 905 0846.7 Protective Cap ............................................................................................ 1
29 905 2515.9 High Pressure Hose, 1/4 x 10 .................................................................... 1
30 905 2234.6 Screw, 5/16"-24 NF x 1/2 Cup Pt. Skt. Set................................................. 1
31 905 5160.5 Connector with O-Ring, 7/16-20 x 1/4 Pipe (if necessary)........................ 1
500 3466.9 Decal, Warning (not shown) ...................................................................... 1
501 7488.6 Decal, Caution (not shown) ....................................................................... 1
750 H 767 (501 7450.9) Cable Cutter with 767 Hand Pump (includes A, B, C & E)
750 E 975 (501 7708.7) Cable Cutter with 975 Electric Power Pump (includes A, B, D & F)
750 (502 9149.1) Cable Cutter with Ram (includes A & B)
751 (502 2279.1) Cutter Head Unit (includes A)
Parts List