Multiquip 21362 manual Trowel Blade Removal, Trowel Arm Flatness Test

HPLA/HPHA-SERIES 36"TROWEL — MAINTENANCE

Trowel Blade Removal

1.Remove the trowel blades from the trowel arm by removing thethreehexheadbolts(Figure 46)fromthetrowelarm.Set blades aside.

HEX

3.If the trowel arm is found to be uneven or bent, replace the trowel arm. A bent trowel will not allow the trowel to operate in a smooth fluid rotation.

4.Next,checkeachofthesixsidesof theroundmachinedshaft sectionofthetrowelarm.Eachsectionshouldhavethesame clearance betweentheroundofthetrowelarmshaftandthe testsurface.

HEAD

BOLT

REMOVE

LOCK

WASHER

BLADE

ARM

NOTE

Trowel Arm Adjustment

Trowel arms can be damaged by rough handling or by striking exposed plumbing or forms while in operation. ALWAYS look-out for objects which might cause damage to the trowel arms.

Figure 46. Trowel Blades

2.Wirebrushany build-up of concrete from all six sides of the trowel arm. Repeat this for the remaining three arms.

Trowel Arm Flatness Test

1.Usingapieceof3/4inchthicksteelplateoranysurfacewhich is true and flat, check all six sides of each trowel arm for flatness.

2.Check each of the six sides of the trowel arm (hex section only) using a ten thousands of an inch (max.) feeler gauge (Figure 47) between the flat of the trowel arm and an ex- tremely flat test surface.

Shown in (Figure 48) is the adjustment fixture with a trowel arm inserted. As each trowel arm is locked into the fixture, the arm bolt is adjusted to where it contacts a stop on the fixture. This will consistently adjust all of the trowel arms, keeping the finisher as flat and evenly pitched as possible.

1.Locate the trowel arm adjustment tool P/N 1817. Set the adjustmenttoolfora clock-wisebladerotation,meaningthe fixture arm is in the "UP" position.

Figure 47. Trowel Arm Flatness Test Figure 48. Trowel Arm Adjustment Tool

PAGE 34 — HPLA/HPHA-SERIES 36" WALK-BEHINDTROWEL— OPERATION AND PARTS MANUAL — REV.#3 (07/06/10)