TL5 Series Field Cultivator Caterpillar

• Folding

• Depth

• Front to Rear Leveling of the Implement

• Side-to-Side Level of the Field Cultivator

• Depth Gauges

• Springs for the Gauge Wheels

Folding the Implement

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Failure of hydraulic components or accidental operation of hydraulic controls can allow implement or wings to fall and cause serious bodily injury or death! Install all maintenance locks when working on or under implement. See operation manual. Keep everyone clear when raising or lowering implement. Check for adequate overhead and side to side clearance before raising or lowering wings. Make certain all hydraulic systems are full of oil and free of air before raising or lowering wings or implement. Check operation manual for detailed instructions.

Unfolding

1. Unlock the wing transport lock valve and unlock the wheel transport lock valve.

2. Use the hydraulic circuit from the tractor to completely raise the implement.

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NOTICE
Do not fold or unfold the wings when the tool is on the ground. Damage to the shanks on the wings could occur.

3. Use the hydraulic circuit from the tractor to lower the wings on the implement to the WORKING position.

4. Set the parking brake on the tractor. Stop the engine.

5. Lock the wing transport lock valve.

Folding

1. Unlock the wing transport lock valve and unlock the wheel transport lock valve.

2. Use the hydraulic circuit from the tractor to completely raise the implement.

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NOTICE
Do not fold or unfold the wings when the tool is on the ground. Damage to the shanks on the wings could occur.

3. Use the hydraulic circuit from the tractor to raise the wings on the implement to the FOLDED position.

4. Set the parking brake on the tractor and stop the engine.

5. Lock the wing transport lock valve.

Front to Rear Leveling of the Implement

Note: Check the air pressure in the tires before proceeding.

Reference: See Operation and Maintenance Manual, "Tire Inflation - Check" for additional information.

The implement must be level before transporting.

The implement must be level for efficient operation.

The center section of the field cultivator must be leveled first.

The procedure that is used to level the implement depends on the type of hitch that is on the implement.

• Standard (self-levelling)

• Optional Hitch (Floating)

The standard hitch (self-levelling) uses the adjustment screw to level the center section of the implement during field operation and roading. The standard hitch (self-levelling) is dependent on the height of the drawbar of the tractor in order to level the implement. The standard hitch (self-levelling) follows the ground contour from the drawbar to the rear of the implement.

The wings are leveled from the front to the rear by the adjustment at the gauge wheels.

The adjustment screw on the turnbuckle is used to level the floating hitch for transportation of the implement only. During tillage, the implement is leveled from the front to the rear by the gauge wheels. The floating hitch follows the ground contour independently of the height of the drawbar on the tractor.

You must determine the type of hitch that is on the implement in order to level the implement. Refer to Illustration 1 and Illustration 2 in order to determine the type of hitch. The floating hitch has gauge wheels on the center section of the field cultivator.

Illustration 1	g00831932
standard hitch (standard hitch (self-levelling))

Illustration 2	g00831930
Optional Hitch (Floating)

Illustration 3	g00832823
Storage location for the adjusting wrench

Adjusting wrench (1) that is used to adjust the implement is located inside a center frame member on the left side of the implement.

Center Section (Standard Hitch)

Use the steps below to level the center section of the standard hitch (self-levelling):

1. Lower the implement and fully retract the lift cylinders.

2. Operate the field cultivator for a short distance. Do not raise the implement. Stop the engine and set the parking brake.

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Illustration 4	g00833019

3. The depth must be checked in line with each set of wheels for the center section. Carefully dig out the sweeps on the front and rear of the field cultivator.

   Note: Measurements can be taken at the top of the sweep in order to avoid more digging. Make sure that you use an accurate measurement of the height of the sweep.

4. Measure the depth at each location. Illustration 4 shows the locations for measuring the depth. The depth should be measured at each set of wheels.

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Illustration 5	g00832923
Adjusting wrench on adjusting screw

Note: Use 4 7/8 inch for an initial adjustment.

5. Use adjusting wrench (1) to loosen jam nut (2) .

6. Turn adjustment screw (3) in order to level the implement. The depth should be equal for the front sweeps and the rear sweeps.

   Note: Turn the adjustment screw clockwise in order to lower the front of the implement. Turn the adjustment screw counterclockwise in order to raise the front of the implement.

   Reference: Refer to illustration 3 for the storage location of the wrench.

7. Tighten jam nut (2) on adjustment screw (3) and replace adjusting wrench (1) in the storage location.

8. Repeat steps 1 through step 6 in order to verify the adjustment.

9. If necessary, repeat steps 1 through step 8 until the implement is leveled.

Wings (Standard Hitch (Self-levelling) and Floating Hitch)

Use the steps below to level the wings of the standard hitch (self-levelling) and the floating hitch:

Note: Also, use this procedure to level all of the sections on a field cultivator that has a floating hitch.

1. Level the center section. See "Center Section (Standard Hitch)" for the procedure to level the center section of a standard hitch (self-levelling).

2. Lower the implement and fully retract the lift cylinders.

3. Operate the field cultivator for a short distance. Do not raise the implement. Stop the engine and set the parking brake.

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Illustration 6	g00832986
The implement is not shown in field conditions.

4. The depth must be checked in line with each set of wheels for the wings. Carefully dig out the sweeps on the front and rear of the field cultivator.

   Note: Measurements can be taken at the top of the sweep in order to avoid more digging. Make sure that you have an accurate measurement of the height of the sweep.

5. Measure the depth at each location.

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Illustration 7	g00833038
Adjustment at the gauge wheel (B) Use 381 mm (15 inch) for the initial adjustment of the spring. (C) Use 476 mm (18.75 inch) for the initial adjustment of the gauge wheel.

Note: Do not adjust nut (4) that is for the spring on adjustment bolt (6). Refer to "Adjustment of the Spring on the Gauge Wheel" for additional information.

Note: Use 476 mm (18.75 inch) for an initial adjustment.

6. Use the adjusting wrench to loosen jam nut (5) and adjust adjustment bolt (6) at each set of wheels in order to level the frame.

   Reference: Refer to illustration 3 for the storage location of the wrench.

7. Tighten jam nut (5) and replace the adjusting wrench in the storage location.

8. Repeat steps 1 through step 4 in order to verify the adjustment.

9. If necessary, repeat steps 1 through step 8 until the implement is level.

Level the Field Cultivator (Optional Hitch) from the Front to the Rear.

Use the procedure in "Wings (Standard Hitch)" in order to level all sections of the Optional Hitch (Floating) from the front to the rear.

Illustration 8	g00833093
Field cultivators with a floating hitch are levelled at the gauge wheels.

Side-to-Side Level of the field cultivator

Use the following procedure for side-to-side adjustment (leveling) of the field cultivator:

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Illustration 9	g00835612
(D) Use 612.7750 mm (24.125 inch) for an initial adjustment.

1. Use the adjusting wrench to loosen jam nut (7) and set all ratchet jacks (8) to an initial setting of 612.7750 mm (24.125 inch). Tighten the jam nut and replace the adjusting wrench in the storage location.

   Reference: Refer to illustration 3 for the storage location of the wrench.

2. Lower the implement and fully retract the lift cylinders.

3. Operate the field cultivator for a short distance. Do not raise the implement. Stop the engine and set the parking brake.

4. Measure the depth of the sweeps on the center section, and measure the depth of the sweeps on each wing.

   Note: Measure the depth of the sweeps at the locations of the wheels on each section.

5. Use the adjusting wrench to loosen jam nut (7) on ratchet jacks (8) .

   Reference: Refer to illustration 3 for the storage location of the wrench.

6. Adjust the wings so that the depth of the sweeps on the wings match the depth of the sweeps on the center section.

7. Tighten the jam nut on the ratchet jacks and replace the adjusting wrench in the storage location.

8. Repeat steps 2 through step 4 in order to verify the adjustment. If necessary, repeat steps 2 through step 4 until the implement is level.

9. Adjust the depth gauges for the ratchet jacks. See "Setting the Depth Gauges" for additional information.

Depth Adjustment

The depth of tillage is controlled by the ratchet jacks. The gauge wheels have a mechanical linkage that will repeat the depth setting precisely.

Use the procedure below to adjust the depth of the sweeps:

1. Lower the implement and fully retract the lift cylinders. The adjustment is difficult when the gauge wheels are supporting the implement. Make sure that the gauge wheels are not supporting weight of the implement.

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Illustration 10	g00833108
Depth gauge for the ratchet jack

Note: An initial setting of 612.775 mm (24.125 inch) should be approximately 63.50 mm (2.5 inch) inches of depth.

2. Use the adjusting wrench to loosen jam nut (7) on ratchet jacks (8) .

   Reference: Refer to illustration 3 for the storage location of the wrench.

3. Adjust each ratchet jack to the desired depth.

   Note: The marks on the decal equal 1 inch of depth adjustment. 2 and 1/4 revolutions of the ratchet is equal to 1 inch of depth adjustment.

4. Tighten jam nut (7) and replace the adjusting wrench in the storage location.

Setting the Depth Gauges

After all the sections have been leveled and operated at a consistent depth, the depth gauges should be adjusted.

There are two depth gauges.

• Depth gauges for the ratchet jacks

• Depth gauge for the center section

Adjusting the depth gauge for the ratchet jacks

Illustration 11	g00835636
Depth gauge for the ratchet jack

Depth gauge (9) has six marks that are equal to 1 inch. The Letter (A) is used to reference 0 inches of depth and the letter (F) is used to reference 5 inches of depth.

1. The implement should be level and the implement should operate at a consistent depth before you adjust depth gauge (10). If necessary, level the implement.

2. Lower the implement and fully retract the lift cylinders.

3. Operate the field cultivator for a short distance. Do not raise the implement. Stop the engine and set the parking brake.

4. Measure the depth of the sweeps on the center section, and measure the depth of the sweeps on each wing.

5. Loosen bolt (10) and bolt (11) .

6. Rotate gauge (9) until the gauge registers the depth of the sweeps. Tighten bolt (10) and bolt (11) .

Adjusting the large depth gauge on the center section

Illustration 12	g00836021
Depth gauge for the large center section

The large depth gauge that is on the center section can be viewed from the tractor cab. The gauge will indicate the depth of the sweeps on the field cultivator. This gauge is not used to adjust the depth.

1. Lower the implement and fully retract the lift cylinders.

2. Operate the field cultivator for a short distance. Do not raise the implement. Stop the engine and set the parking brake.

3. Measure the depth of the sweeps.

4. Loosen jam nut (13) and adjust bolt (12) that supports the gauge so that gauge (13) registers the depth of the sweeps.

Adjustment for the Spring on the Gauge Wheel

Illustration 13	g00833701

The spring on the gauge wheel should be adjusted to 381 mm (15 inch).

If necessary, use the adjusting wrench to adjust nut (4) .

Adjustment of the Sequence Valve for the Wings

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Failure of hydraulic components or accidental operation of hydraulic controls can allow implement or wings to fall and cause serious bodily injury or death! Install all maintenance locks when working on or under implement. See operation manual. Keep everyone clear when raising or lowering implement. Check for adequate overhead and side to side clearance before raising or lowering wings. Make certain all hydraulic systems are full of oil and free of air before raising or lowering wings or implement. Check operation manual for detailed instructions.

Sequence valves are used on implements that have five complete sections. The sequence valve is used to cause the inner wings to unfold before the sections on the outside wings begin to unfold.

Use the following procedure to adjust the sequence valve for unfolding the wings:

1. Completely unfold the wings of the implement.

2. Fold the outside wing only.

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Illustration 14	g00841189

3. Adjust sequence valve (1) until the outside wing cannot be unfolded.

4. Adjust the sequence valve (1) enough to allow the outside wing to unfold.