WORKMASTER GO-M04 Manual

GO-M04 Gate Opener
OPERATOR'S GUIDE

PH: 866.476.9217
WORKMASTER disclaims any liability for injuries, death or damages arising directly or
indirectly, from the use, operation or application of this product not in accordance with
the procedures, specifications and recommendations contained in this owner’s manual.
The user of this product is responsible to install, maintain and operate the product and
parts or components manufactured or supplied by WORKMASTER in such a manner as
to comply with all federal, state and local rules, ordinances, regulations and laws,
including the Williams-Steiger Occupational Safety Act, and the American National
Standards Institute Safety Code.

PH: 866.476.9217
SYMBOLS
The following symbols are found throughout this Operator's Guide to alert the reader to
the relative danger that may result from non-observance.
This indicates a situation in which a hazard is
imminent and will result in a high probability of serious
injury or death.
This indicates a potentially hazardous situation, which
could result in minor to moderate injury.
CAUTION
This indicates a potentially hazardous situation or
unsafe practice which could result in product or
property damaged.
IMPORTANT
This symbol indicates a general statement to assist the
user in the operation or maintenance of the
equipment.

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TABLE OF CONTENTS
SECTION PAGE
I. Introduction 1
II. Safety 2
III. Supplied Materials 3
IV. Assembly 4
V. Opening Car Gates 6
VI. Closing Car Gates 9
VII. Extension Bars 11
VIII. Servicing the GO-M04 12
IX. Exploded View 14
APPENDIX A: Specifications A-1
APPENDIX B: Torque B-1

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I. INTRODUCTION
Fast, safe and economical unloading of covered hopper cars continues to be a problem
at most unloading sites. One of the biggest contributors to this problem is the often
time-consuming and difficult job of opening and closing bottom gates or doors of these
hopper cars. Load compaction, weather conditions, age, abuse, or corrosive or gritty
bulk materials can combine to prevent gate mechanisms from operating smoothly.
Regardless of cause, the costs associated with the problem are significant. Delays in
emptying the hopper cars means slow car turnaround, increased demurrage costs, and
interrupted production schedules. Even more importantly, the chance of worker injury is
high since at many unloading sites, clumsy or dangerous makeshift tools are used
during the “fight” to open a stubborn gate.
To meet our commitment of “WE FIND A WAY – OR MAKE ONE®”, WORKMASTER
has developed a line of Hopper Car Gate Openers and accessories which provide a safe,
efficient and economical solution to the problem of opening easy, medium and hard-to-
open hopper car gates.
There are pneumatic, electric and manual units available producing up to 13,000 ft-lbs
of torque eliminating the need for "cheater” bars, sledge hammers, jacks, and other
improper tools sometimes used on this difficult job.
This Operator's Guide details the specifications, operation, maintenance, and safe use
of the GO-M04 Hopper Car Gate Opener. Experience has shown that the GO-M04
Opener should be used on easy-to-open car gates. However, the same experience
demonstrates that total satisfaction in use depends on attention to detail in operating
and maintaining the unit.
The GO-M04 Gate opener uses a geared action to open or close hopper car gates with
a continuous 360° rotation in either clockwise (CW) or counter-clockwise (CCW)
direction. Input and output rotation directions are the same. (EXAMPLE: Clockwise input
rotation using the ratchet wrench creates clockwise output rotation on the Capstan
Drive Fitting.)
IMPORTANT
All persons involved in the operation and maintenance
of this equipment should be thoroughly familiar with
the contents of this manual.

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II. SAFETY
To prevent injury to yourself or others, and/or damage to equipment, you should
adhere to the following basic safety instructions.
1. Read carefully the entire Operator's Guide prior to installing or operating
equipment.
2. Always follow proper precautions and use proper tools and safety equipment.
3. Be sure to receive proper training.
4. Always use the equipment and all its components in applications for which
they are approved.
5. Be sure to assemble all components correctly.
6. Never use worn, defective or damaged components.
7. Practice good housekeeping at all times, and maintain good lighting around
all equipment.
8. Perform Lock-out/Tag-out procedure on all energy sources to the equipment,
mounting structure, loading, and discharge systems in accordance with ANSI
Standards before installation or maintenance.

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III. SUPPLIED MATERIALS
The GO-M04 comes shipped unassembled in its carry/storage bag. Prior to assembly,
verify that all of the components are present and in good condition.
1. Carrying Case
2. Ratchet Wrench Assembly
3. O-Ring
4. Pin
5. Capstan Drive Fitting
6. Operator's Guide
1
6
5
2
4
3

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IV. ASSEMBLY
1. Place the Ratchet Wrench Assembly on a clean, flat surface.
2. Place the Capstan Drive Fitting over the Ratchet Assembly's 1-1/2" square
drive anvil.
3. Insert Pin (provided) into the Drive Fitting and Wrench's thru-hole.

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4. Slide the O-Ring (provided) over the Drive Fitting until it seats into the
Fitting's ring-groove. This stops the Pin from coming out.

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V. OPENING CAR GATES
1. Inspect and prepare the trackside worksite so that it will accommodate the
practical and safe use of the GO-M04 Gate Opener.
2. Disengage the Car Gate Locking Mechanism before attempting to open the
gate.
3. Using the Capstan Swaging Kit (optional accessory, PN: 33-11120), clean-
out and square-up the capstan socket on the car gate so that the Capstan
Drive Fitting on the Ratchet Wrench's output drive can be aligned properly,
and fully seated in the railcar gate's capstan socket.
4. Firmly seat the capstan drive fitting into the car's capstan socket.
5. Set the Wrench's direction of rotation (CW or CCW) (Figure 1) by securely
positioning the pivoting selector pawl to the appropriate direction based on
capstan travel.
6. Apply force to the ratchet wrench.
CAUTION
Failure to disengage the Car Gate Locking Mechanism
will damage the Opener.
IMPORTANT
Regular use of the CAPSTAN SWAGING KIT will ensure
a long-life for your Drive Fitting. Also, a clean, square
capstan socket will maximize the torque transfer
between the Opener and the car gate.

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7. When the gate is fully open, stop ratcheting and remove the GO-M04 from
the car's capstan socket.
Maintain firm hand control of the GO-M04 or the
ratchet wrench handle during entire opening
operation.
Do not use other opening devices (pry bars,
multipliers, etc.) in an attempt to "help" the
GO-M04 Opener.
IMPORTANT
The preferred method is to pull on a ratchet wrench.
Pushing on the ratchet wrench is normally considered
dangerous because if slippage or breakage occurs, the
operator can strike his/her knuckles. Sometimes,
however, this is the only way the tool can be used. If
this is the case, use extra caution, eg, wear gloves,
use a shorter stroke, etc.
CAUTION
If the railcar gate will not move, STOP using the
GO-M04 Opener, and notify your Supervisor.
Continued application of force will damage the
Opener.

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Figure 1: F/R Direction
CCW
Rotation
CW
Rotation

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VI. CLOSING CAR GATES
1. Inspect and prepare the trackside worksite so that it will accommodate the
practical and safe use of the GO-M04 Gate Opener.
2. Disengage the Car Gate Locking Mechanism before attempting to open the
gate.
3. Re-examine the car's capstan socket. Look for rounded edges, spalling or
mushrooming. If needed, re-use the swage tool to square-up the capstan
socket.
4. Firmly seat the Capstan Drive Fitting into the car's capstan socket.
5. Set the Wrench's direction of rotation (CW or CCW) (Figure 1) by securely
positioning the pivoting selector pawl to the appropriate direction based on
capstan travel.
6. Apply force to the Ratchet Wrench.
CAUTION
Failure to disengage the Car Gate Locking Mechanism
will damage the Opener.
IMPORTANT
Regular use of the CAPSTAN SWAGING KIT will ensure
a long-life for your Drive Fitting. Also, a clean, square
capstan socket will maximize the torque transfer
between the Opener and the car gate.
Maintain firm hand control of the GO-M04 or the
ratchet wrench handle during entire opening
operation.

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7. When the gate is fully closed, stop ratcheting and remove the GO-M04 from
the car's capstan socket.
CAUTION
If the railcar gate will not move, STOP using the
GO-M04 Opener, and notify your supervisor,
continued operation will damage the Opener.
IMPORTANT
The preferred method is to pull on a ratchet wrench.
Pushing on the ratchet wrench is normally considered
dangerous because if slippage or breakage occurs, the
operator can strike his/her knuckles. Sometimes,
however, this is the only way the tool can be used. If
this is the case, use extra caution, eg, wear gloves,
use a shorter stroke, etc.
Do not use other opening devices (pry bars,
multipliers, etc.) in an attempt to "help" the
GO-M04 Opener.

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VII. EXTENSION BARS
An Extension Bar can be used to increase the GO-M04's torque output. In fact, the
gears inside the GO-M04's ratcheting head are capable of generating up to 5,000 ft-lbs
of torque.
1. Read and understand Appendix B: Torque found in this Manual before
determining if an Extension should be used and what length the Extension
should be so as to use the GO-M04 safely.
2. Make sure an Extension Bar safely overlaps the GO-M04's ratchet handle by
at least 12".
3. Watch and maintain the Extension Bar's safety-overlap during ratcheting so
as to eliminate the possibility of slipping.
4. Maintain firm footing and hand control during operation.
The addition of an extension Bar introduces a potential hazard if
proper safety precautions are not followed.

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VIII. SERVICING THE GO-M04
When the GO-M04 is in-for-maintenance and the unit has been disassembled (partial
or complete), the components should be cleaned and inspected for wear before
reassembly of the Opener. Proper maintenance of equipment often depends upon the
ability of a service technician to determine whether a part or assembly is worn to the
point where it should be replaced. Refer to Section IX: Exploded View during
disassembly and reassembly of this Tool.
DISASSEMBLY
1. Remove Positioning Bolt [1] from Cover Plate [2] using a 4mm Allen
Wrench.
2. Remove Direction Switch [8] by pulling Switch away from Drive Case [7]. On
newer units it may be necessary to "work" Switch back and forth while pulling
from Drive Case.
3. Using a 5mm Allen Wrench, remove the two Screws [9] from the back of the
Drive Case [7].
4. Remove Cover Plate [2].
Always wear proper eye protection when servicing the
GO-M04. Spring loaded mechanisms always pose an
inherent danger.
IMPORTANT
At this point –make note of the position and
orientation of each internal part. The Right Stopper
[4] and Left Stopper [5] look very similar but are
unique.

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5. Remove Stopper Springs [6].
6. Remove Left Stopper [5] and Right Stopper [4].
7. Remove Drive Gear [3].
8. After the parts have been cleaned, inspected and/or replaced, the GO-M04
can be reassembled.
LEFT STOPPER
PN: 33-M4005
RIGHT STOPPER
PN: 33-M4004

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IX. EXPLODED VIEW
Item
#
Part #
Description
Qty
1
33-M4001
Positioning Bolt
1
2
33-M4002
Cover Plate
1
3
33-M4003
Drive Gear
1
4
33-M4004
Right Stopper
1
5
33-M4005
Left Stopper
1
6
33-M4006
Spring
2
7
33-M4007
Drive Case
1
8
33-M4008
Direction Switch
1
9
33-M4009
Screw
2
10
33-M4010
Pin
2
11
33-M4011
Spring
1
12
33-M4012
Steel Ball
1
13
33-M4013
Handle
1
14
33-M4014
Release Pin
1
15
33-M4015
End Cap
1

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APPENDIX A: SPECIFICATIONS
GO-M04 SPECIFICATIONS
Model:
GO-M04 Manual Gate Opener; 1-1/2” Sq Dr
Power:
Manual; Ratchet Wrench
Working Torque:
400 ft-lbs
Frame Dimensions:
36” L x 3.5” W x 2.25” D
Finish Coating:
Black Oxide
Gate Opener Weight:
23.5 Lbs

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APPENDIX B: TORQUE
Torque (T) is a "turning" or "twisting" force and differs from tension, which is created
by a straight pull. Torque is the result of multiplying the value of the force (F) applied
by the Distance from the point of application. The same torque result can be achieved
with a lower force if the distance from the point of application is increased.
T = F X D
T = 20 Lbs x 1 Ft = 20 Ft-Lbs
T = 10 Lbs x 2 Ft = 20 Ft-Lbs
20 Lbs
10 Lbs