Great-plains DVN8324 Operator Manual User Manual Page 63
- Page / 78
- Table of contents
- TROUBLESHOOTING
- BOOKMARKS
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Great Plains Manufacturing, Inc. Troubleshooting 59
11/25/2013 550-466M
Brakes (Option)
Problem Causes Solutions
Smoke or odd burning
odor from axle area
Overheated brakes, typically on long steep
hills
Stop immediately. Wait for brakes to cool
completely. Moderate downhill speed by
using lower gear and frequent full stops.
Check brake components for heat distortion.
New brakes may exhibit slight smoking or
odors until linings seat on drums.
Check brakes if problem persists, or braking
action is insufficient.
Braking insufficient,
one wheel
Tire under-inflated. Inflate all tires to specification.
Worn brake linings and/or drum Service brakes.
Worn or leaking brake cylinder Rebuild or replace cylinder.
Grease or oil on linings Correct problem causing contamination. Ser-
vice brakes.
Brake adjuster not adjusting Ice or dried mud can freeze mechanism.
Check for damage seizing movement. Check
for worn and inoperative pawl, or weak/dam-
aged/missing pawl spring.
Braking insufficient, all
wheels
Air in machine brake lines Check for loose fittings. Check for damaged
fittings and lines. Check for damage or worn
operating components. Correct source of
leak. Recharge and bleed system.
Air/Hydraulic system: damaged diaphragm
in booster chamber
Replace booster.
Air/Hydraulic system: leaks in air system Repair leaks.
Air/Hydraulic system: clogged filters Clean filters (page 48).
Air/Hydraulic system: valve open Close dump valve (page 50).
Close petcock (page 50).
Hydraulic/Hydraulic system: air in brake line
from tractor
Bleed and recharge brake line.
Brake linings and/or drums worn Service brakes.
Brake linings replaced with unapproved
parts having inadequate friction rating
Replace shoes with approved parts.
Pressure supplied by tractor insufficient 80 psi / 55 kPa minimum for air system.
No braking, one wheel Bleed port open Close port. Re-charge and bleed system.
Brake lining worn or missing Inspect and repair as needed.
Brake cylinder frozen Inspect and repair as needed.
Brake parts broken or missing Inspect and repair as needed.
No braking, all wheels Rule out problems at brake assemblies Check parking brake system. If doesn’t work
either, the problem is likely in the hubs. If
parking brakes do work, the problem is likely
above the hubs.
Loss of fluid in machine brake lines Check for fluid loss at all fittings and bleed
ports. Close/repair, recharge and bleed.
Line(s) to tractor improperly connected Check connections.
Trailer brake system disabled or malfunction-
ing in tractor
Check function with another trailer.
Tractor line pressure insufficient Have dealer check pressure at port.
- 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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