GREAT PLAINS Terra Max HT1100-20 Leitfaden

FIELD ADJUSTMENT GUIDE

Document #TLUS625C-0001B

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Document # TLUS625C-0001B

Tillage

Terra Max

Proper servicing and adjustment is key to the long life of all farm equipment. With careful and systematic

inspection of equipment, costly maintenance, time and repair can be avoided. The following information

will assist with recommended servicing and adjustments:

49664

First Time Field Setting Recommendation:

1) Gang Angle - 3-4 Degree

2) Working Depth - 2.5-3 Inches

3) Wing Down Pressure - Start in “FLOAT”. Increase to 200 PSI

if pressure is needed

4) Fore/Aft - Machine must be level front to rear to ensure all

blades are working the same depth

5) Finish Reel Down Pressure - Start in “FLOAT”. Increase to

200-300 PSI is pressure is needed

6) Operating Speed - 7-9 MPH

Models Affected:HT1100-20, HT1100-25, HT1100-30

Date: July 14, 2020

General Information

Document #TLUS625C-0001B 2 of 6

Tire Inflation Chart:

Ensure all tires are inflated to the proper operating

pressure per the table to the right. Note: Proper infla-

tion in important to ensure safe transport and level

operation of the Terra Max.

Tire Pressure

Position Size Pressure

Gauge Wheel 9.5L x 15” 8-Ply 44 PSI

Transport/

Center 20&25 Titan 380/55R x 16.5G 73 PSI

Transport/

Center 30 BKT 410/50R x 16.5 73 PSI

Transport/

Wings 25 11L-15SL 12-Ply 52 PSI

Transport/

Wings 30 12.5L x 15” 12-Ply 52 PSI

Hydraulic Hose Hookup

Color Function

Black Lift (2 Hoses)

Green Fold (2 Hoses)

Red Gang Adjustment & Leveling(2 Hoses)

Yellow Hydraulic Reel Att. (3 Hoses, one for

case drain) (Option)

Hydraulic Hose Hookup:

Great Plains hydraulic hoses have colored coded han-

dle grips to help hook up hoses to the tractor remotes.

Hoses with the same color use the same remote.

Front to Rear Leveling:

1) Completely unfold the machine will observing the

unit for any hydraulic leaks or loose fittings.

2) Once unfolded, raise the unit to re-phase the lift cir-

cuit. Hold the lift circuit open for 30 seconds to ensure

all air is purged from the hydraulic system.

3) Lower the machine so the front coulter gangs are 1-

2” off of a level surface.

4) The leveling system and gang adjustment share the

same hydraulic circuit. To change between the two dif-

ferent systems, use the switch mounted by the by-

pass valve. Note: The lights must be plugged in to

switch between gang angle and fore & aft.

5) Using the (Red) hydraulic hoses, adjust the hydrau-

lic cylinder so that the front coulter gangs are the

same distance off the ground as the rear coulter

gangs.

49657

49369

Document #TLUS625C-0001B

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49659

Wing Adjustment Turnbuckle:

Note: Prior to leveling the wings, ensure that the

machine is level front to rear.

1) Lower the machine until the coulter gangs are 1-

2” off of the ground.

2) Loosen the jam nuts, and adjust the wing turn-

buckles (shortening the turnbuckles lowers the

wings and extending the turnbuckles raises the

wings) to match the center frame.

3) Once the machine is leveled side to side, any fur-

ther adjustment in the field should be down with the

hydraulic down pressure. Note: If running gangs at

an angle and the wings are going too deep, hydrau-

lic weight transfer should be switched to float.

Wing Fold Assist Proximity Sensors Adjustment

(If Installed):

Note: Wings must be folded up and the wing safety

lock pins installed when adjusting the proximity sen-

sors to prevent damage to the sensor and bracket.

1) Loosen the nuts (one on the front and one on the

back side of the sensor bracket, adjust the proximity

sensor to 1/8” to 1/4” from the front of the proximity

sensor to the rear of the wing tube).

2) Once adjusted, re-tighten the nuts to secure the

proximity sensor in position.

Proximity sensors have built in diagnostic LED’s. If

the RED LED is illuminated, the switch is activated

(sensor sees metal). If the GREEN LED is illumi-

nated, the switch is not activated (sensor doesn’t

see metal). The switch must have 12+V for the sen-

sors to work which is powered by the light plug. 49366

Document #TLUS625C-0001B 4 of 6

49660

Gang Angle Adjustment:

Several conditions will dictate the gang angle setting

that will accomplish the desired result:

Research has shown that 3-5 degree of gang angle is

recommended for most applications.

1) The Terra Max may be operated with gangs running

from 0-8 degrees. Changing the angle does affect the

operation of the unit. As indicated above, if the gangs

are operated at an angle, down pressure is generally

unnecessary. Operating speeds will need to be less

when operating with the gangs angled 3-6 degrees.

Operating speeds should be from 7-9 mph when oper-

ating gangs in the angled position and from 8-10 mph

when operating in the straight position.

2) When operating the gangs in the straight position (0

degrees), down pressure may be necessary, usually

between 200-400 psi.

CAUTION: When not operating with live down pressure

the fold system must be in “FLOAT” position. Failure to

operate in either float or active down pressure will dam-

age the fold system. See your tractor operator’s manual

to set system to “FLOAT “position if necessary.

48601

Hydraulic Down Pressure Adjustment: (HT1100-20,

HT1100-25, HT1100-30)

Note: This setup procedure is for tractors with closed

center pressure compensated or pressure and flow

compensating hydraulic systems. Open center hydrau-

lics are NOT SUPPORTED.

1) With the machine unfolded, engage the fold/unfold

hydraulics for continuous flow (unfold position).

2) From the tractor cab, adjust the hydraulic flow so the

needle on the bypass gauge is in the green zone 1000-

1500 psi. Note: The faster the flow of oil through the

system the greater the potential for oil heating, prema-

ture wear or tractor damage.

3) At the valve, adjust the valve to set the initial down

pressure. This is usually set at 300-400 psi (do not

exceed 800 psi).

During field operation, if the wings are running too high,

increase the pressure setting to help level the machine.

If the center of the machine is running too high,

decrease the pressure setting.

Note: When operating machine with the blades in

angled position it is generally unnecessary to apply

wing down pressure. Only in very hard ground will wing

down pressure be necessary.

CAUTION: When not operating with live down pressure

the fold system must be in “FLOAT” position. Failure to

operate in either float or active down pressure will dam-

age the fold system. See your tractor operator’s manual

to set system to “FLOAT “position if necessary.

Document #TLUS625C-0001B

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Hydraulic Single Point Depth Stop Adjustment:

The hydraulic dept stop will ensure a consistent depth

every time the implement is lowered.

1) Once the machine is level and set to the desired

working depth, set the hydraulic depth stop at the

front of the machine.

2) After setting the stop, if a change of depth is

desired, one full turn of the handle either in or out will

the change the depth approximately 1/4” up or down

respectively.

Note: Standard operating depth is 1-4”. For first time

settings a depth of 2.5-3” is recommended unless it is

too wet to go this deep.

Slight tire to ground pressure should be maintained to

prevent cylinder pin and clevis wear. If after setting

the depth stop, the detent on the tractor kick out

before the stop contacts the button on the depth stop,

slow the hydraulic flow speed down.

49661

Finishing Reel (Single or Double)

Note: Finishing reel must either be ran in “FLOAT” or

active hydraulics during field operation. Never run in

Neutral.

1) Initially it is recommended to start these out in the

“FLOAT” position so that we are not applying pressure

which could affect other components of the machine.

Once all previous settings have been completed,

increase down pressure to the reels.

2) Initial down pressure should be about 200-300 PSI.

Never exceed 800 PSI. Note: Do not run down pres-

sure in very wet fields.

49662

49661

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Gauge Wheel Adjustment:

Note: The gauge wheels should be set in the field

position to be 1/2” to 1 1/2” off the ground.

1) Loosen the set screws on each gauge wheel.

2) Turn the jack handle to adjust the spindle receiver.

Adjusting the jack handle counterclockwise will run

the wheel closer to the ground while turning the jack

handle clockwise will cause the wheel to run further

away from the ground.

3) After adjusting the gauge wheel to the desired posi-

tion, re-tighten the set screws.

49375

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