Great-plains DVN8324 Operator Manual User Manual Page 37
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Great Plains Manufacturing, Inc. Operating Instructions 33
11/25/2013 550-466M
Brake Operation (option)
Implement wheel brakes are optional. There are brake
shoe pairs on each of the outside transport wheels. The
shoe pairs are operated by two independent systems:
1. The “service” or “trailer brake” system is controlled
by the tractor. It is connected to the tractor with a
single hydraulic line or two air lines.
Refer to Figure 25
2. The implement can be parked by manually placing
chock blocks on either side of the transport tires.
See also:
page 37 - “Front to Rear Leveling”
page 56 - “Troubleshooting”
page 46 - “Brake Maintenance (Option)”
Brake Roll-Away Hazard:
Set manual chock blocks before unhitching implement. Block
tires if brakes are not installed, and for extra safety in case
brake system is tampered with or is not in working order.
Parking jack is not sufficient restraint for a implement parked
on un-level ground. An unsecured implement. could roll
away, causing an accident resulting in death, injury and sub-
stantial property damage.
Both versions of the trailer brake system to the tractor are
spring-release on the implement. Unless the chock blocks are
set, implement service braking is released shortly after
unhitching the implement.
Note: The wheel chock system is not a true emergency
brake system, as there is no safe way to set the
chock blocks when the implement is in motion.
This manual therefore refers to it only for parking.
Service Brake Operation
If optional brakes are installed and connected, the
hydraulic/hydraulic or air/hydraulic systems automatically
work in conjunction with the tractor’s own brakes.
Application and release of tractor brakes during tractor
motion applies and releases the service brake system on
the implement.
Know Your Tractor Systems:
Application of tractor Parking and/or Emergency brakes may
or may not operate the implement service brake system,
depending on the design of the tractor systems.
Consult your tractor manual for details on when remote
brake ports are engaged and released. Note any vari-
ance from general behaviour in the table at right. Make
sure the tractor operator knows when implement brakes
are engaged and released.
Machine Damage Risk:
Make the implement chock block removal part of your trans-
port check-list. The tractor cannot place the chock blocks in
the transport position. Transporting with chock blocks in the
park position will result in tire, chock block damage, and/or
loss of chocks.
Figure 25
Parking Brake (Chock Blocks)
42198
1
Tractor
Braking-
Related Event
Typical Trailer
Brake Port
Response
Record How
Your Tractor
Operates
Normal
tractor
braking
Activates trailer
brakes
Differential
tractor
braking
Reduced trailer
braking
Tractor
Parking Brake
Activates trailer
brakes
Tractor
Emergency
Brake
- Operator Manual 1
- Table of Contents Index 2
- Table of Contents 3
- Equipment Identification 5
- Machine Record 6
- Introduction 7
- Description of Unit 7
- Using This Manual 8
- Owner Assistance 8
- Important Safety Information 9
- Wear Protective Equipment 10
- Use Safety Chains 10
- Avoid High Pressure Fluids 10
- Keep Riders Off Machinery 10
- Tire Safety 11
- Use Safety Lights and Devices 11
- Transport Machinery Safely 11
- Shutdown and Storage 11
- Practice Safe Maintenance 12
- Safety At All Times 13
- Accident Prevention 13
- Safety Decals and Lights 14
- Reflectors: Fluorescent Panels 15
- Reflectors: Red 15
- Reflectors: Orange 15
- EXCESSIVE SPEED HAZARD 16
- Danger: Crush 17
- Danger: Electrocution 17
- Warning: Wing Crushing 18
- Warning: High Pressure Fluid 18
- Warning: Hand Pinch 18
- 848-530C REV A 18
- Caution: Read Operator Manual 19
- Caution: Tires Not A Step 19
- Notice: Transport Lock 19
- Danger: Cutting of Foot 19
- Preparation and Setup 20
- 11/25/2013 550-466M 21
- Clevis Hitch 22
- Category III Hitch 22
- Electrical Hookup 23
- Brake Hook-up (Option) 24
- Air Brake Hook-up 25
- Hydraulic Brake Hook-up 26
- Operating Instructions 27
- Unfolding and Folding 28
- Unfolding 30
- 550-466M 11/25/2013 32
- Lowering 33
- Transporting the Discovator 35
- Brake Operation (option) 37
- Transport 39
- Field Operation 40
- First Time Field Adjustments 41
- Side to Side Leveling 42
- Disc Gang Depth Calibration 42
- Scraper Settings 43
- Rear Attachment Settings 44
- Coil Tine Settings 45
- Reel Settings 45
- Unfolded Storage 46
- Maintenance and Lubrication 47
- Maintenance Lift Lock 48
- Wheel Bearing Hub 49
- All Hinge Points 49
- Brake Maintenance (Option) 50
- Air Brake Maintenance 52
- Brake Shoe Replacement 54
- Brake Drum Maintenance 58
- Mounting Wheels 59
- Test and Adjust Brakes 59
- Troubleshooting 60
- Coulter/Disc Gang Performance 61
- General Performance 61
- Sweep/Shank Performance 62
- Brakes (Option) 63
- Problem Causes Solutions 64
- Retract Kit (Option) 65
- Appendix 66
- Torque Values Chart 67
- Tire Inflation Chart 68
- Appendix 65 69
- Appendix 67 71
- Warranty 73
- Salina, Kansas 67402-5060 USA 78
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