ZR MS31 series User manual

SECTION CONTENTS PAGE
1SAFETY INSTRUCTIONS 2-3
2SPECIFICATIONS 4
3OPERATING INSTRUCTIONS 5-6
4MAINTENANCE 7
5ADJUSTMENTS 7
6REPLACEMENT OF PARTS 7-11
7DIAGRAM 12
8PARTS LIST 13-14
© Copyright protected Z.R. Tool Inc. All rights reserved. ZR-0073
1
OPERATION MANUAL
AND PARTS LIST
MS31
SERIES TOOLS
These products are patented
and/or have patents pending.

1. SAFETY INSTRUCTIONS
1. Safety Glasses
•
2. Gloves
•
3. Safety Shoes
•
4. Training
•
5. Maintenance
•
6. Strap Breakage
•
•
7. Strap Cutting
•
8. Maintain Stability
•
•
READ ALL INSTRUCTIONS BEFORE OPERATING TOOLS
Congratulations on your purchase of the world’s finest steel strapping tool. In order
to insure years of problem free performance operators of this tool must be familiar
with all safety, operational, and maintenance procedures contained in this manual.
Wear safety glasses with side shields or safety goggles when operating tool.
2
Wear gloves when handling strapping or when operating tool to prevent possible cuts and
scratches.
Excessive tensioning may cause strap breakage. When tensioning strapping, always stand to
one side of the strap. If it breaks you will not be in its direct path.
Never operate the tool while in an awkward position or in such a manner that a hand could slip
resulting in a loss of balance.
Only trained personnel should operate these tools. It is imperative that the entire contents of
the tool manual are fully read and understood. Personnel are to be given a full and complete
demonstration.
Wear safety shoes to protect feet from injury.
Always maintain proper footing and balance when operating the tool to prevent a fall or injury.
If the load has sharp corners always use edge protectors.
Inspect tool daily to insure correct operation. Loose, worn or damaged parts must be serviced
immediately as required. Never operate the tool if a part is worn or broken as this will only
further damage the tool and may result in injury.
Only use strap cutters approved to cut strapping within your specifications. When cutting
strapping always stand to one side of the strap being cut, pressing the strap against the
package above the cutter, making sure the strapping rebounds away from you.

9. Maintain Safety Perimeter
•
•
10. Tool Alterations
•
•
11. Strapping
•
•
12. Ensure a Correct Sealless Joint is Formed
•
•
•
•
•
3
The sealless joint is too deep if the lower strap is scratched by the knife. The sealless joint is
not deep enough if the upper strap is not sheared clean. In both these instances the sealing
depth must be adjusted following instructions on page 7.
Never attempt to make a sealless joint without having the straps under full tension.
If the sealless joint does not appear properly formed it must be cut off and reapplied. Check the
tool for correct operation, as well as loose, worn, or damaged parts and service immediately.
Never handle or ship any load with sealless joints which do not appear properly formed.
Incorrectly formed sealless joints may not secure the load. This could result in serious
injury.
•
Use only new strapping within specifications for the tool. Using old, damaged, or incorrect
strapping may result in strap breakage and damage to the tool.
When dispensing strapping use a specifically designed strap dispenser. When not in use, tuck
strap end back into dispenser.
Regularly inspect the sealless joint, it must conform to the illustration below.
A correct sealless joint is formed when the upper strap is sheared clean and the knife does not
leave scratch marks on the lower strap. Approximately one thickness of strap must show in the
interlock.
Always maintain a clear and uncluttered work area.
When using tool other people should remain at a safe distance to avoid possible injury.
Never alter any tool. Do not add extensions to lengthen the handles as this could damage the
tool and is unsafe.
Only use genuine parts, including all fasteners and bearings as they are custom made for
extreme use conditions.

MS31
2. SPECIFICATIONS
Weight 9.8 lbs. (4.4 kg.)
Base Length 4.2 " (105 mm)
Base Width 2.4" (60 mm)
Height 4.2" (105 mm)
Strapping Specifications
Model
Number Strap Width
MS31-1 3/4” (19 mm) .025” - .031” (0.635 mm - 0.80 mm)
THIS TOOL IS NOT DESIGNED TO BE USED WITH STRAPPING BELOW
.025" (0.635 mm) OR ABOVE .031” (0.80 mm) THICKNESS.
4
This tool is designed for use with regular duty steel strapping (107,000 psi / 750 N/mm2 ) to high
tensile steel strapping (156,000 psi / 1100 N/mm2 ).
Strap Thickness

3. OPERATING INSTRUCTIONS
A
B
• Insert both portions of
the strap with left hand
into the sealing section.
• Take tool with right
hand and pull the
feedwheel lever towards
the sealing lever.
• Place strapping tightly
around package and hold
in place with left hand.
5
• Hold tool firmly with left
hand on the sealing lever.
• With right hand move
the tension lever forwards
and backwards until the
desired tension is
obtained.
• Release the feedwheel
lever and make certain
both straps are fully
seated in and against the
strap stop front and the
strap stop rear as well as
held firmly in place by the
strap guide. If not, this
may result in permanent
damage to the feedwheel
in the form of flat spots.

C
D
• Move the sealing lever
back to its original
position.
• To release the tool, with
right hand pull the
feedwheel lever toward
the sealing lever, pushing
the lever to the left away
from the sealing section.
6
• Place right hand firmly
on the tension lever for
supporting the tool.
• With left hand push the
sealing lever forward until
it reaches the stop.

1.
2.
3.
4.
TO REMOVE JAMMED STRAPPING FROM SEALING SECTION:
TO ADJUST SEALING DEPTH:
TO REPLACE A BEARING (POSITIONS 6, 9, 10, 45, 49, or 54):
1.
2.
3.
4.
5.
6.
7.
Remove external retaining ring (position 22), remove extension spring (position 32) only from the side which
is hooked around spring tension spring (position 21), remove shaft (position 23), remove feedwheel lever
assembly from its position. Then easily remove jammed strapping from sealing section. Re-install
feedwheel lever assembly, shaft, extension spring and external retaining ring back into position.
To reduce the clearance: loosen nut (position 31A), turn hexagon socket set screw (position 30) counter
clockwise with a ball hexagon key, re-tighten nut.
To increase the clearance: loosen nut (position 31A), turn hexagon socket set screw (position 30)
clockwise with a ball hexagon key, re-tighten nut.
The clearance between the feedwheel and the gripper should be .020" (.51mm). If the clearance is more or
less than this, it must be adjusted.
Note: If you are not familiar with the following replacement procedures, please contact your authorized
dealer for a demonstration or for service.
4. MAINTENANCE
5. ADJUSTMENTS
6. REPLACEMENT OF PARTS
Inspect the tool daily for loose, worn, or damaged parts and service immediately as required.
Clean the sealing section regularly with compressed air to remove any dust and particles.
Lubricate the die (position 16) and punch (position 25) daily with a thin grade of oil. This will reduce
friction and extend the life of the tool as well as the parts.
Spray the entire tool daily with a rust preventative, this will prevent any rust formation.
Loosen nut (position 31), adjust hexagon socket set screw (position 44) with a hexagon key, turn counter
clockwise to increase sealing depth, or turn clockwise to decrease sealing depth, re-tighten nut.
7
350°F (175°C). This will release the Loctite* which is presently around the surface of the bearing.
TO ADJUST CLEARANCE BETWEEN THE FEEDWHEEL (POSITION 5) AND GRIPPER
(POSITION 26):
Place a thin amount of Loctite* No. RC603 around bore and bearing.
Press bearing into place with correct diameter tooling.
Let cure for 24 hours before using.
Apply a thin layer of new white grease around bearing contact surface for lubrication.
While hot, push out old bearing with correct diameter tooling.
Clean bearing or bushing seat area (bore) thoroughly to remove old Loctite* with Loctite* CHISEL MC
FREE. Then clean new bearing or bushing thoroughly with Naptha (camp fuel).
Remove old bearing by heating the area around the bearing with a torch to approximately

TO REPLACE THE FEEDWHEEL (POSITION 5):
1.
2.
3.
4.
5.
6.
7.
TO REPLACE THE GRIPPER (POSITION 26):
1.
2.
3.
4.
5.
6.
7.
8.
TO REPLACE THE KNIFE (POSITION 17):
1.
2.
3.
4.
5.
6.
7.
TO REPLACE THE PUNCH (POSITION 25):
1.
2.
The knife depth is too deep if the lower strap is scratched by the knife. The knife depth is not deep
enough If the upper strap is not sheared clean. In both these instances the sealing depth must be
adjusted following instructions on page 7.
Remove extension spring (position 32) only from the side which is hooked around spring tension pin
(position 21).
Remove external retaining ring (position 3).
Re-install external retaining ring.
Before using tool check clearance between the feedwheel and gripper and adjust as required following
instructions on page 7.
Before using tool check clearance between the feedwheel and gripper and adjust as required following
instructions on page 7.
Perform one seal and check strapping to ensure the cutting depth is correct. The knife depth is correct
if the upper strap is sheared clean and the knife does not leave scratch marks on the lower strap.
Note: The gripper is held in a non-adjustable position with spring tension pin (position 27).
8
Remove extension spring (position 32) only from the side which is hooked around spring tension pin
(position 21).
Important: Make certain that the roller (position 57) is in its position.
Remove housing cover (position 50) by removing 4 cover screws (position 48).
With pliers, pull knife from slot on die and knife block (position 13).
To remove gripper, use a drive pin punch matching the diameter of the spring tension pin (position 27)
and drive the spring tension pin into the tool base until the gripper comes loose from its position.
Lift feedwheel lever (position 7) to access gripper.
To install new gripper, place the gripper into the cavity of the tool base. Re-install the spring tension
pin and drive it into the hole of the tool base until it is flush with the tool base.
Push out tensioning assembly (consisting of tension lever (position 11) and feedwheel (position 5) for
unobstructed access to gripper.
Install new feedwheel with the " " marking facing the strap guide (position 4),
Remove external retaining ring (position 3).
Remove 2 cheese head machine screws (position 24A) located on the underside of the tool base.
Remove punch, clean area, replace with new punch, then re-install cheese head machine screws with
a pin head amount of Loctite* No. 277 on the thread of each screw.
Re-install housing cover, then re-install cover screws along with washers (position 60).
Remove the tensioning assembly (consisting of tension lever (position 11) and feedwheel shaft
(position 2)).
Install new knife observing spring tension pin (position 18) aligns with same slot on die and knife block.
Make certain that the area is clean and well greased with white grease.
Clean cavity area and add one drop of a thin grade of oil in the cavity.
re-install tensioning assembly observing the key way position during assembly.
Re-position strap guide onto the protruding feedwheel shaft.

TO REPLACE THE DIE (POSITION 16):
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
*Loctite is a registered trademark of the Loctite Corporation. 9
Remove die, clean area, and replace with new die, then re-install cheese head machine screws with a
pin head amount of Loctite* No. 277 on the thread of each screw.
To re-install the internal assembly, precisely follow diagrams on page 10 and 11.
Remove the total internal assembly by tilting it at a 20° angle (see diagram below) and pull out with
pliers by eccentric shaft plunger (position 55), at the same time making sure to hold internal assembly
together with other hand, exposing die on the underside of the die and knife block (position 13).
Remove 3 cheese head machine screws (position 15).
REMOVAL OF INTERNAL ASSEMBLY MS31
Make certain that the area is clean and well greased with white grease.
Re-install housing cover, then re-install cover screws along with washers (position 60).
Re-install woodruff key and sealing lever.
Important: Make certain that the roller (position 57) is in its position.
Remove housing cover (position 50) by removing 4 cover screws (position 48).
Remove sealing lever (position 47) by loosening hexagon socket cap screw (position 46).
Re-install the eccentric shaft observing its relative position to the cam (position 34).
The cam lever (position 52) must engage with its tip into the cavity of the cam. The components
should align together and operate smoothly. Do not force the parts together.
Remove eccentric shaft (position 53).
Remove woodruff key (position 1).

INSTALLATION OF INTERNAL ASSEMBLY
MS31 SERIES TOOLS
Make sure the cam lever is attached to the eccentric shaft.
Then push it through the hole of eccentric shaft plunger and
the housing until it is flush.
10
Tilt the internal assembly approximately
20° and place into housing making sure
the back up hook is sitting in its slot in
the housing.
Place the cam as per drawing, with the long width sitting flat
in the die and knife block. Add white grease throughout.
Then place the eccentric shaft plunger on top of the cam
and fasten by pushing the connection pin, position 19,
(making sure the groove on this pin is facing the outside of
the die and knife block) through hole in die and knife block
and into like slot on eccentric shaft plunger.
Make certain to follow all instructions precisely or it will result in broken or damaged parts .
Fig. 1A
Fig. 1B
Fig. 1C

INSTALLATION OF INTERNAL ASSEMBLY
MS31 SERIES TOOLS
11
Turn the cam with pliers in a clockwise direction until it sits
in position shown in this drawing.
Turn cam lever in a clockwise direction with fingers until it
sits in front of the cavity of the cam.
Important: Make certain that the roller (position 57) is
in its position.
Then install the housing cover and the sealing lever making
sure they sit properly and operate smoothly, do not force.
Fig. 1D
Fig. 1E

12

8. MS31 PARTS LIST
POSITION PART NO. PART NAME PARTS PER TOOL
1, 1A ZR-0001 WOODRUFF KEY 2
2 ZR-0002 FEEDWHEEL SHAFT 1
3 ZR-0003 EXTERNAL RETAINING RING 1
4 ZR-0006 STRAP GUIDE 3/4" (19mm) 1
5 ZR-0074 FEEDWHEEL 31 1
6 ZR-0008 ROLLER BEARING 1
7 ZR-0009 FEEDWHEEL LEVER 1
8 ZR-0010 WASHER 1
9 ZR-0011 ROLLER CLUTCH AND BEARING ASSEMBLY 1
10 ZR-0012 ROLLER CLUTCH 1
11 ZR-0013 TENSION LEVER 1
12 ZR-0014 HANDLE 2
13 ZR-0067 DIE AND KNIFE BLOCK 31 (INCLUDES ZR-0034, ZR-0077) 1
14 ZR-0016 DOWEL PIN 3
15 ZR-0017 CHEESE HEAD MACHINE SCREW 3
16 ZR-0068 DIE 31 1
17 ZR-0069 KNIFE 31 (INCLUDES ZR-0021) 1
18 ZR-0021 SPRING TENSION PIN 1
19 ZR-0022 CONNECTION PIN 1
20 ZR-0023 BACK UP HOOK 1
21 ZR-0024 SPRING TENSION PIN 2
22 ZR-0025 EXTERNAL RETAINING RING 2
23 ZR-0026 SHAFT 1
24, 24A ZR-0033 CHEESE HEAD MACHINE SCREW 4
25 ZR-0071 PUNCH 31 1
26 ZR-0031 GRIPPER 1
27 ZR-0032 SPRING TENSION PIN 1
28 ZR-0034 SPRING TENSION PIN 2
29 ZR-0037 STRAP STOP FRONT 3/4" (19mm) 1
30 ZR-0038 HEXAGON SOCKET SET SCREW 1
31, 31A ZR-0039 NUT 2
32 ZR-0040 EXTENSION SPRING 1
33 ZR-0041 HEXAGON SOCKET CAP SCREW 1
13

8. MS31 PARTS LIST
POSITION PART NO. PART NAME PARTS PER TOOL
34 ZR-0042 CAM 1
35 ZR-0043 BALL 1
36 ZR-0044 COMPRESSION SPRING 1
37 ZR-0045 DIE BLOCK BACK UP 1
38 ZR-0046 SPRING TENSION PIN 1
39 ZR-0047 SPACER 1
40 ZR-0048 PIN 1
41 ZR-0051 STRAP STOP REAR 3/4" (19mm) 1
42 ZR-0052 NUT 1
43 ZR-0072 HOUSING MS31 1
44 ZR-0054 HEXAGON SOCKET SET SCREW 1
45 ZR-0055 ROLLER BEARING 1
46 ZR-0056 HEXAGON SOCKET CAP SCREW 1
47 ZR-0057 SEALING LEVER 1
48 ZR-0338 COVER SCREW 4
49 ZR-0059 ROLLER BEARING 1
50 ZR-0060 HOUSING COVER 1
51 ZR-0061 CHEESE HEAD MACHINE SCREW 2
52 ZR-0078 CAM LEVER (INCLUDES ZR-0028) 1
53 ZR-0063A ECCENTRIC SHAFT 31 (INCLUDES ZR-0016) 1
54 ZR-0064 ROLLER BEARING 1
55 ZR-0065 ECCENTRIC SHAFT PLUNGER
(INCLUDES ZR-0043, ZR-0044, ZR-0064, ZR-0075) 1
56 ZR-0075 SPRING TENSION PIN 1
57 ZR-0076 ROLLER 1
58 ZR-0077 ROLLER PIN 1
59 ZR-0028 DOWEL PIN 1
60 ZR-0339 WASHER 4
ZR-0073 OPERATION MANUAL AND PARTS LIST FOR MS31 SERIES
TOOLS. 1
14

Z.R. TOOL INC. referred to as hereby warrants its tools as follows:
1. If any part of this tool fails due to poor workmanship or material within 90 days from
the date of purchase, that part will be exchanged or repaired at no charge.
may replace any tool or part with a new or comparable tool or part. Any
warranty-repaired item will continue to carry the warranty for the balance of the time
remaining on the initial 90-day warranty in addition to time that the item was away
for repair.
2. In the event of any warranty claim, all tools or parts must be returned F.O.B. .
After analysis, will determine warranty entitlement. All tools or parts returned
require an assigned return authorization number, which may be obtained from .
This number is to be labelled clearly on all goods returning.
3. This warranty is valid only with a receipt or invoice stating the purchaser's name and
address, model number, serial number and date of purchase.
4. reserves the right to substitute new and improved tools or parts at any time.
This warranty does not apply to tools or parts that have been damaged due to accident, abuse,
natural or personal disaster, improper use, improper or lack of maintenance, improper
replacement of parts, any naturally wearing parts, use of any parts other than genuine
parts, tampering or removal of identification nameplate, any unauthorized alterations, repairs
or modifications, or using the tool for any application for which it was not sold.
In no event will or its authorized dealers be liable to any purchaser for lost revenue, lost
wages, lost savings, or any other incidental or consequential damages arising from the
purchase, use, or inability to use this product, even if or its authorized dealers have been
advised of the possibility of such damages.
MODEL NUMBER ______________________ AUTHORIZED DEALER:
SERIAL NUMBER ______________________
DATE PURCHASED ____________________
CERTIFICATE OF WARRANTY