SE60 V Asphalt Screed Machine System Caterpillar

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Diesel engine exhaust contains products of combustion which may cause personal injury. Always start and operate the engine in a well ventilated area, and, if in an enclosed area, vent the exhaust to the outside.

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In order to prevent personal injury from accidental screed movement, lock the screed in the RAISED position by using the service lock lever to extend the lock pins after the screed is fully raised.

Specifications

Introduction

This procedure outlines the methods used to set the angle of attack and slope for the screed extenders. The extenders must be adjusted after replacement of the screed plates or as required during normal operation.

Note: This procedure describes the test and adjustment for the extender on the left side of the screed. If necessary, repeat this procedure for the right extender.

Required Tools

Check Preparation

1. Verify that the main screed plate is flat and straight prior to performing this procedure. Refer to SE60V Screed, Systems Operation Testing and Adjusting, "Screed Plate - Check and Adjust".

Check Procedure

Angle of Attack Check

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Illustration 1	g03780038

1. Use extender proportional extender switch (2) to retract the extender.

2. Press extender slope raise switch (1) until the extender stops moving. Completely raising the extender places the extender in contact with the slope stop.
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   Illustration 2	g03780045

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   Illustration 3	g03780050

3. Place Tool (A) on the surface of main screed plate (4) and the inside end of extender screed plate (3).

   Note: Surface of Tool (A) must be in contact with the length of the surface of main screed plate (4).

4. Tool (A) should touch the trailing edge of extender screed plate (3).
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   Illustration 4	g03780053

5. Use extender height raise switch (5) and lower switch (6) to raise and lower the extender, as required. If the trailing edge of extender screed plate (3) can be placed in contact with Tool (A), go to Step 6. If the trailing edge extender cannot be placed in contact with Tool (A), go to "Adjustment Procedure","Extender Adjustment".
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   Illustration 5	g03780054

6. Use Tool (D) to measure gap between Tool (A) and the leading edge of the inside of extender screed plate (3). For the correct angle of attack, the gap should be 0 mm (0 inch) to 1 mm (0.0395 inch). If the angle of attack is correct, go to Step 7. If the angle of attack is incorrect, go to "Adjustment Procedure","Extender Adjustment".
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   Illustration 6	g03780068

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   Illustration 7	g03780080

7. Place Tool (A) on the surface of main screed plate (4) and the outside end of extender screed plate (3).

8. The trailing edge of extender should touch Tool (A).

9. If the trailing edge of extender screed plate (3) is in contact with Tool (A), go to Step 10. If the trailing edge extender is not in contact with Tool (A), go to "Adjustment Procedure","Extender Adjustment".
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   Illustration 8	g03780082

10. Use Tool (D) to measure gap between Tool (A) and the leading edge of the outside of extender screed plate (3). For the correct angle of attack, the gap should be 0 mm (0 inch) to 1 mm (0.0395 inch). If the angle of attack is correct, go to "Screed Plate Flatness Check". If the angle of attack is incorrect, go to "Adjustment Procedure","Angle of Attack Adjustment".

Screed Plate Flatness Check

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Illustration 9	g03780086

1. Place Tool (B) across the width of trailing edge of extender screed plate (3) approximately 25.4 mm (1 inch) in front of the trailing edge.

2. Place two of Tool (C) between Tool (B) and extender screed plate (3). Locate each Tool (C) below the first adjuster at each end of the extender screed plate.

3. Use third Tool (C) as a gauge in order to check the flatness of extender screed plate (3).

4. If there is any space between Tool (B) and the third Tool (C), go to "Adjustment Procedure","Screed Plate Extender Flatness Adjustment". If there is no space between Tool (B) and Tool (C), remove the tooling.

Adjustment Procedure

Note: Verify that the main screed plate is flat and straight prior to performing this procedure. refer to Systems Operation Testing and Adjusting, "Screed Plate - Check and Adjust".

Extender Adjustment

Height and Slope Adjustment

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Illustration 10	g03780089

1. Retract all trailing edge adjusters (7), including the end adjusters, in order to place the screed plates tight against the machined frame.
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   Illustration 11	g03780092

2. Loosen nuts (8) on top of all trailing edge adjusters (7). Turn the trailing edge adjuster counterclockwise to retract the adjuster.

3. Tighten nut (8).
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   Illustration 12	g03780098

4. Use proportional extender switch (2) to move the extender out to 76 mm (3 inch) from full extension.
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   Illustration 13	g03780100

   Note: Only rotate the slope stop enough to disengage from the extender. If the slope stop is rotated past this point, the extender could contact and damage the stop when the extender is retracted.

5. Loosen locknut (10). Turn bolt (9) in order to disengage slope stop (11). Swing the slope stop out of the way.
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   Illustration 14	g03780109

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   Illustration 15	g03780129

6. Place Tool (A) on the surface of main screed plate (4) and the inboard side of extender screed plate (3).

   Note: Surface of Tool (A) must be in contact with the length of the surface of main screed plate (4).

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   Illustration 16	g03780053

7. Using Tool (A) as a guide, adjust the height of the extender. Use extender height raise switch (5) and lower switch (6) to adjust the height of the extender.

8. The trailing edge of the inside of extender screed plate (3) should be flush with main screed plate (4).

   Note: If the trailing edge of the extender screed plate does not contact Tool (A), go to "Angle of Attack Adjustment". Adjust the angle of attack so the trailing edge of the extender screed plate is in contact with Tool (A).

9. Remove Tool (A).
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   Illustration 17	g03780098

10. Use proportional extender switch (2) to retract the extender.
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    Illustration 18	g03780045

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    Illustration 19	g03780050

11. Place Tool (A) on the surface of main screed plate (4) and the inside edge of extender screed plate (3).

    Note: Surface of Tool (A) must be in contact with the length of the surface of the main screed plate.

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    Illustration 20	g03780135

12. Using Tool (A) as a guide, adjust the position of the extender. Use extender slope raise switch (1) and lower switch (12) to adjust the slope of the extender.

13. The trailing edge of the inside of extender screed plate (3) should be flush with main screed plate (4).

14. Remove Tool (A).
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    Illustration 21	g03780098

15. Use proportional extender switch (2) to extend the extender to 76 mm (3 inch) from full extension.

16. Repeat Step 6 through Step 15 until no further height and slope adjustment is necessary. Then, go to Step 17.
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    Illustration 22	g03780100

17. When the extender height and slope are correct, position slope stop (11). Extend bolt (9) and tighten locknut (10).
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    Illustration 23	g03780135

18. Cycle extender slope raise switch (1) and lower switch (12). The slope control must be cycled to engage the extender with the slope stop mechanism.

19. Repeat Step 6 through Step 16 in order to recheck the extender slope and height.

20. If the extender slope and height are correct, go to "Angle of Attack Adjustment". If the extender slope and height are not correct, go to Step 4 and reset the extender slope and height.

Angle of Attack Adjustment

Note: Do not break the extender height chains if only a minor adjustment of the angle of attack is required. In order to make a minor angle of attack adjustment, evenly reset trailing edge adjusters (7) for the extender.

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Illustration 24	g03780098

1. Use proportional extender switch (2) to retract the extender.
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   Illustration 25	g03780045

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   Illustration 26	g03780050

2. Place Tool (A) on the surface of main screed plate (4) and the inside end of extender screed plate (3).

   Note: Surface of Tool (A) must be in contact with the length of the surface of the main screed plate.

3. The trailing edge of extender should touch Tool (A). Use extender height raise switch (5) and lower switch (6) to raise and lower the extender, as required.
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   Illustration 27	g03780054

4. Use Tool (D) to measure gap between Tool (A) and the leading edge of the inside of the extender. For the correct angle of attack, the gap should be 0.00 mm (0.00 inch) to 1 mm (0.0395 inch). If the angle of attack is correct, go to Step 15. If the angle of attack is incorrect, go to Step 5.

5. In order to adjust the angle of attack, the individual height adjusters must be accessed and adjusted independently. Refer to the following steps in order to access the height adjusters.
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   Illustration 28	g03780140

6. For the left extender, remove six bolts (13) and washers. Remove cover plate (14).
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   Illustration 29	g03780144

7. Remove four bolts (15) and washers. Remove cover plate (16) and flashing.
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   Illustration 30	g03780146

8. For the right extender, remove four bolts (17) and washers. Remove flashing (18).
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   Illustration 31	g03780150
   Left extender

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   Illustration 32	g03780151
   Right extender

9. Loosen two motor mounting bolts (19). Do not remove the bolts.
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   Illustration 33	g03780155
   Left extender

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   Illustration 34	g03780157
   Right extender

10. Loosen locknut (21). Loosen chain tension bolt (22) in order to relieve the tension of height adjustment chain (20).
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    Illustration 35	g03780158
    Left extender

11. Locate and remove master link (23). Separate height adjustment chain (20). The height adjusters on the inboard and outboard sides of the extender operate independently when this chain is disengaged.
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    Illustration 36	g03780176
    Right extender

12. Locate and remove master link (24). Separate height adjustment chain (25). The height adjusters on the outboard corners of the extender operate independently when this chain is disengaged.
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    Illustration 37	g03780177

13. Locate and remove master link (26). Separate height adjustment chain (27).The height adjusters on the inboard corners of the extender operate independently when this chain is disengaged.
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    Illustration 38	g03780380

14. Adjust the angle of attack with the front height adjusters (28). Adjust the inboard and outboard height adjusters equally. In order to increase the angle of attack turn bolts counterclockwise. In order to decrease the angle of attack, turn the bolts clockwise.
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    Illustration 39	g03780068

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    Illustration 40	g03780080

15. Place Tool (A) on the surface of main screed plate (4) and the outside end of extender screed plate (3).

16. Use Tool (D) to measure gap between Tool (A) and the leading edge of the outside of extender screed plate (3). For the correct angle of attack, the gap should be 0.00 mm (0.00 inch) to 1 mm (0.0395 inch).

17. If outboard angle of attack adjustment is required, use the outboard height adjuster only. In order to increase the angle of attack turn bolts counterclockwise. In order to decrease the angle of attack, turn the bolts clockwise.

18. Go to Step 4 and recheck the angle of attack. If the angle of attack is correct, reconnect and tighten the chains. Tighten the motor mounting bolts.

Screed Plate Extender Flatness Adjustment

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Illustration 41	g03780086

1. Place Tool (B) along the trailing edge of extender screed plate (3).
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   Illustration 42	g03780092

2. If the trailing edge of the extender screed plate is not flat, reset inner trailing edge adjusters (7). Do not adjust the outer adjusters.

3. Loosen nut (8) on top of trailing edge adjusters (7). Turn the trailing edge adjuster counterclockwise to retract the adjuster.

4. Tighten nuts (8).

Reset the Scales

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Illustration 43	g03780397
Right extender shown

1. Loosen jam nuts (31) and move indicator (30) to the zero mark on extender height scale (29). Tighten the jam nuts.
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   Illustration 44	g03780435
   Left slope

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   Illustration 45	g03780445
   Right slope

2. Loosen jam nuts (34) and move indicator (33) to the zero mark on extender slope scale (32). Tighten the jam nuts.