Multiquip 21362 manual HPLA/HPHA-SERIES 36TROWEL Maintenance, Spider Removal, Trowel Arm Removal

HPLA/HPHA-SERIES 36"TROWEL — MAINTENANCE

2.Start engine, and bring trowel blades up to full speed and look for the following conditions:

■Does the trowel have a perceived rolling or bouncing motion when in use?

■Look at the trowel while it is running, does the guard ring “rock up and down” relative to the ground?

Spider Removal

1.Onceitisdeterminedthatanadjustmentisrequired,remove the spider assembly from the gearbox shaft as follows:

a.Locate the cone point square head set screw (Figure 43) and attached jam nut found on the side of the spider assembly.

b.Loosen the jam nut and cone point square head set screw, andcarefullylifttheuppertrowelassemblyoff ofthespiderassembly. Aslighttapwitharubbermallet maybenecessarytodislodgethespiderfromthemain shaft of the gearbox.

Trowel Arm Removal

1.Each trowel arm is held in place at the spider plate by a hex headbolt (zerkgreasefitting)andarollpin.Removeboththe hex head bolt and the roll pin (Figure 44) from the spider plate.

2.Remove the trowel arm from the spider plate.

SPIDER

PLATE

ROLL

PIN

HEX HEAD

BOLT

(ZERK FITTING)

Figure 44. Removing Roll Pin

and Zerk Grease Fitting

3.Should the trowel arm inserts (bronze bushing ) come out with the trowel arm, remove the bushing from the trowel arm andsetasideinasafeplace.Ifthebushingisretained inside the spider plate, carefully remove the bushing.

4.Examine the bronze trowel arm bushing insert (Figure 45), clean if necessary.Replace bushing if out of round or worn.

Figure 45. Bronze Bushings

Figure 43. Spider/Gearbox Removal

HPLA/HPHA-SERIES 36" WALK-BEHIND TROWEL — OPERATION AND PARTS MANUAL — REV. #3 (07/06/10) — PAGE 33