Multiquip STX55Y6 operation manual Checking Trowel Arm Straightness, Bronze Bushings

3.Should the trowel arm inserts (bronze bushing ) (item 2 Fig.

34)come out with the trowel arm, remove the 2-piece bushing from the trowel arm and set aside in a safe place. If the bushing is retained inside the spider plate, carefully remove the bushing.

4.Examine the 2-piece bronze trowel arm bushing insert (Fig- ure 34), clean if necessary.Replace bushing if out-of-round or worn.

STX-SERIES — MAINTENANCE

Checking Trowel Arm Straightness

Trowel arms can be damaged by rough handling, (such as dropping the trowel on the pad), or by striking exposed plumbing, forms, or rebar while in operation. A bent trowel arm will not allow the trowel to operate in a smooth fluid rotation. Ifbenttrowelarmsaresuspect, check for flatness as follows, refer to Figures 35 and 36:

31

4

2

5

6

10

7

8

9

1Spider Plate

22-Piece Bushing

3Hex Head Screw

4Hex Head Screw (Rounded)

5Hex Jam Nut

6Lock Washer

7Trowel Arm Lever

8Roll Pin

9Trowel Arm

10Arm Return Spring

Figure 34. Bronze Bushings

1Trowel Arm Round Shaft Section

2Trowel Arm Hexagonal (Hex) Shaft Section

3Lever Mounting Slot (Left Arm Shown)

4Roll Pin Hole

5Blade Attachment Bolt Hole (One of Three)

6Flat of Hexagonal Shaft (Top of Arm)

Figure 35. Trowel Arm

1.Use a thick steel plate, granite slab or any surface which is true and flat, to check all six sides of each trowel arm for flatness.

2.Check each of the six sides of the trowel arm (hex section). A feeler gauge of .004" (0.10 mm) should not pass between the flat of the trowel arm and the test surface along its length on the test surface. (Figure 36, Item 3) .

1Trowel Arm

2Flat Test Surface

3Feeler Gauge (.004 in. / 0.10 mm)

4Feeler Gauge (.005 in. / 0.127 mm))

Figure 36. Checking Trowel Arm Flatness

STX-SERIES • RIDE-ON POWER TROWEL — OPERATION MANUAL — REV. #0 (03/15/06) — PAGE 37