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Page 20

dooR lIfT AsseMbly bReAKdoWN

To prevent personal injury or property damage, all users of this 

equipment should read, understand, and follow these instructions.

* Never overload wagon.  The rating of the GF550 gear is 36,000 lbs. 
or the rating of the tires, whichever is less. The GF650 gear rating is 
44000 lbs. or the rating of the tires, whichever is less.  Overloading 
wagon is dangerous and can cause extensive damage to both the box 
and running gear.

* Never add more sideboards or extensions to the gravity box, beyond 
the standard factory manufactured parts, as the box is not designed 
to handle the added weight.

* Check box periodically for cracks in welds and other structural 
damage.  Have cracked welds fixed immediately.  Failure to do so 
could result in extensive damage to the gravity box and thus greatly 
reduce life of box.

* When pulling gravity box and running gear, be sure that it is fastened 
securely to tractor.  Also connect the emergency brake chain to towing 
vehicle and be sure lighting is connected and working properly.

MAINTeNANce ANd GeNeRAl oPeRATIoNs of GRAvITy WAGoN

* Be sure to read all warnings, caution, and important labels on equipment,  
they are designed for your safety and for longer life of equipment.

* Periodically check all bolts and nuts to ensure proper tension or 
torque.  Torque lug nuts daily.

* Grease all zerks before each use using a good quality lubricant . 

* Before towing be sure master cylinder is full of brake fluid and check 
lines for leaks.  Inspect the actuator for bent or worn parts. Replace 
parts if necessary.  Make sure the actuator mounting bolts are tight.   

* Periodically check braking quality.  If you think they are a little soft, 
check the movement on the actuator.  If it moves more than 7/8”,  the 
brake shoes need to be adjusted.  Failure to do so can result in loss 
of braking.

* If units are used in corrosive conditions the actuator and wheels 
should be washed out with high pressure water.  When actuator parts 
are dry, oil all moving parts and repack wheel bearing.

Periodic servicing of this unit will greatly prolong its usable life.

cAuTIoN

Ref.No. PART No. qTy. descRIPTIoN

1.

00004

2

5/16” Flatwasher

2.

00059 

5/4 3/8” Flatwasher

3.

00179 

1/2 3/8”-16UNC Center-punch Locknut

4.

00523

1/4 3/8”-16UNC x 1 1/4” Hex Head Bolt, Gr. 5

5.

00907 

4

3/8”-16UNC x 1” Hex Head Bolt Gr.5

6.

01114 

1

3/4” OD x 3/8” ID Bushing

7.

01115-95 

1

1 1/4” OD x 3/4” ID Bushing (plated)

8.

01243-30 

1

Roller Brace Bracket

9.

02028 

1

10 Tooth Sprocket (#40)

10.

02384 

1

1/2” NR Machine Washer, 14 Ga

11.

02467 

1

3/8”-16UNC x 1” Carriage Bolt, Gr. 5

12.

02592 

6/8 3/8”-16UNC Nylon Insert Locknut

13.

03096 

1

1/4” x 1 1/4” Roll Pin

14.

06926 

1

3/8”-16 UNC x 2 1/2” Carriage Bolt, Gr. 5

15.

09552-95 

1

2” OD x .25 Thick Washer (plated)

16.

10629-30

1

Door Opener Wheel (black)

17.

11412-30 

1

Latch (black)

18.

11414 

1

Bushing

19.

11459-30 

1

Backplate (black)

20.

11460-30

1

Channel (black)

21.

11461

1

Opener Shaft

22.

11462

1

28 Tooth Sprocket (#40)

-

11463

1

Chain, #40 x 38 Links

23.

11749

1

9 Tooth Sprocket (#60)

24.

11750

1

5/16” x 1 1/2” Roll Pin

25.

11751 

1

5/16” x 2 1/2” Roll Pin

26.

14402-30

1

Latch (black) (750 bu.)

27.

14403-30

1

Channel (black)

28.

14404-30

1

Backplate (black)

29.

14405-30

1

37 Tooth Sprocket

-

14406

1

Chain, #40 x 44 Links

30.

14407-30

1

Ratchet Plate 

6031 -  dooR lIfT AsseMbly

30

29

28

27

26

25

24

23

5

5

8

9

7 6

3

10

2

12

11

13

14

2

2

12

12

3

21

18

15

1

4

4

12

16

Summary of Contents for Gravity Flow 550

Page 1: ...Page 1 10 17 AG20021 Rev 1...

Page 2: ...hank you for purchasing a Demco Gravity Flow Wagon We feel you have made a wise choice and hope you are completely satisfied with your new piece of equipment Proper care and use will result in many ye...

Page 3: ...us situation that if not avoided could result in death or serious injury and includes hazards that are exposed when guards are removed It may also be used to alert against unsafe practices caution Ind...

Page 4: ...erve all safety signs and practice instructions on them Never exceed limits of a piece of machinery If its ability to do a job or to do so safely is in question don t try it Lighting and marking It is...

Page 5: ...inspection for any loose bolts worn parts or cracked welds and make necessary repairs Follow maintenance safety instructions included in this manual Be sure there are no tools lying on or in equipment...

Page 6: ...rs of operation Correct all problems Follow maintenance safety procedures Following operation Following operation or when unhitching stop tractor or towing vehicle set brakes shut off engine and remov...

Page 7: ...ate engine of towing vehicle in a closed building Exhaust fumes may cause asphyxiation Before working on this machine stop towing vehicle set brakes shut off engine and remove ignition key Always use...

Page 8: ...t Turn Sharply G AG21002 Caution 20 M P H cAuTIoN do not exceed 20 MPh when loaded 09 99 AG21002 G D M F K K K B L H 04804 Red Reflector I AG21163 Large Demco Charcoal J 07278 Conspicuity w White to t...

Page 9: ...do not allow hub to turn 4 Tighten nut to final torque indicated on chart 5 Install cotter pin if needed loosen or tighten nut to the next closest locking slot 6 Check hub for end play 7 If end play...

Page 10: ...A B 7 34 12 19 For Breakdown of Tongue and Pivot Arm Assembly See Page 15 M Q O N R S T V X W W 13 Y 34 34 550 bushelw optional frontwheel brakes 8 8 5 5 1 1 2 2 3 3 6 6 7 7 8 8 9 9 10 10 11 11 12 12...

Page 11: ...R BOLSTER FRAMES ASSEMBLY INSTRUCTIONS REF PART QTY DESCRIPTION 1 07353 1 1 1 4 12 UNF Castle Nut 650 750 01934 1 1 14 UNF Castle Nut 550 2 05088 1 1 4 x 2 Lg Cotter Pin 650 750 00191 1 3 16 x 1 1 2 L...

Page 12: ...ld cause severe property damage personal injury and or death thewheels alwaysbeginwithwheelfarthestfromthemaster cylinder and move toward it Immerse the other end of the hose into a clean transparent...

Page 13: ...in 30 12122 30 1 Adjustable Tongue Male Half 31 07517 30 1 Tongue Extension Latch 32 01158 95 1 Latch Spring 33 07521 95 1 Latch Pin 34 00036 1 5 16 Lockwasher 35 01263 1 5 16 18 UNC x 3 4 Hex Head Bo...

Page 14: ...7M 1 Wheel Cylinder Assembly Left 4 SB9783 1 Push Rod 5 SB9254 2 Cover Plate Adjusting Hole 6 05961 2 5 16 18UNC x 5 8 Hex Head Bolt 7 05424 2 5 16 External Tooth Washer 8 05431 1 Bleeder Replacement...

Page 15: ...ake cluster first Then bendaroundthetopoftherearbolsterframeandattachtotheRear BrassTee 4 as shown Now attach 53 Steel Lines 9 to center of outlet on Brass Tee 4 along reach pipe 7 Assemble 12 Rubber...

Page 16: ...f abnormal wear is found such as brake shoe hitting brake drum once lining is gone rivets hitting brake drums and or brake drums out of round NOTE Maximum diameter allowed 13 060 Brake Set up 1 Attach...

Page 17: ...ks on the second click The lever should be approximately straight up and down Now try to rotate each of the four wheels inaforwardrotation Youshouldnotbeabletorotate the wheels forward If you can then...

Page 18: ...5 19 13 5 12 12 5 30 17 13 17 31 28 27 27 28 27 28 19 31 19 43 25 26 23 5 17 17 8 16 8 16 29 10 13 13 11 1 21 1 1 33 9 9 34 18 18 6 17 2 4 17 17 7 10 Red 20 Green 42 Blue Wagons are available in 3 col...

Page 19: ...3 Slide the Center Dump Chute 36 under the box Raise the Center Dump Chute and align holes with holes on the Unloading Chute 35 Bolt together using 3 8 x 1 3 4 bolts 7 and 3 8 Nylon InsertLocknuts 17...

Page 20: ...mounting bolts are tight Periodically check braking quality If you think they are a little soft check the movement on the actuator If it moves more than 7 8 the brake shoes need to be adjusted Failur...

Page 21: ...er plated Please order replacement parts by PART NO DESCRIPTION and COLOR REF PART NO NO QTY DESCRIPTION 11 12293 8 Plastic Bushing 12 13103 30 4 Bolster Bolt 13 13105 30 2 Torsion End Link 14 13107 3...

Page 22: ...6 18 UNC x 3 4 Gr 5 19 00907 2 3 8 16 UNC x 1 Gr 5 20 02592 2 3 8 16 UNC Nylon Insert Locknut 21 12443 30 1 Light Wire Cover REAR PLUG 3 1 2 1 3 Please order replacement parts by PART NO DESCRIPTION a...

Page 23: ...offset REF PART NO NO QTY DESCRIPTION Fender Assembly on 550 750 Gravity Flow Wagons 2 3 4 6 14 13 12 11 10 5 6 13 14 5 1 2 6 6 6 3 1 6 6 3 3 6 6 3 3 6 4 6 9 1 6 4 6 17 18 15 16 7 6 7 6 Mount Inner F...

Page 24: ...de Note Be Careful NOT to Drill through light wire Clamp fender mounts to wagon corner posts at dimensions shown above Using the fender mounts as a guide drill 11 32 dia holes through corner posts of...

Page 25: ...Page 25 NOTES...

Page 26: ...Page 26 NOTES...

Page 27: ...Page 27 NOTES...

Page 28: ...h St BOYDEN IA 51234 PH 712 725 2311 FAX 712 725 2380 TOLL FREE 1 800 54DEMCO 1 800 543 3626 www demco products com Go online to www demco products com for Demco warranty policies operator manuals pro...

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