Multiquip EHTX44Y5 - Manual (Page 46)

page 46 — eHTx44y RIDe-ON TROWeL • OpeRaTION maNuaL — Rev. #0 (01/16/13)
trOuBleSHOOtinG
Troubleshooting (Ride-On Hydraulic Trowel)
Symptom possible problem Solution
Safety stop switch not functioning.
Other problems? Consult engine manufacturer’s manual.
Loose wire connections? Check wiring. Replace as necessary.
Bad contacts? Replace seat cushion (contains the switch).
If trowel “bounces, rolls concrete, or makes uneven
swirls in concrete”..
Blades?
Make certain blades are in good condition, not
excessively worn. Finish blades should measure no
less than 2"" (50mm) from the blade bar to the trailing
edge, combo blades should measure no less that 3.5""
(89mm). Trailing edge of blade should be straight and
parallel to the blade bar.
Spider?
Check that all blades are set at the same pitch angle
as measured at the spider. A fi eld adjustment tool is
available for height adjustment of the trowel arms (see
Optional Equipment)..
Bent trowel arms?
Check the spider assembly for bent trowel arms. If one
of the arms is even slightly bent, replace it immediately.
Trowel arm bushings?
Check the trowel arm bushings for tightness. This can
be done by moving the trowel arms up and down. If
there is more than 1/8"" (3.2 mm) of travel at the tip of
the arm, the bushings should be replaced. All bushings
should be replaced at the same time.
Thrust collar?
Check the fl atness of the thrust collar by rotating it on
the spider. If it varies by more than 0.02"" (0.5 mm)
replace the thrust collar.
Thrust collar bushing?
Check the thrust collar by rocking it on the spider. If it
can tilt more than 1/16"" (1.6 mm) [as measured at the
thrust collar O.D.], replace the bushing in the thrust
collar.
Thrust bearing worn?
Check the thrust bearing to see that it is spinning freely.
Replace if necessary.
Blade pitch?
Check blades for consistent pitch. Adjust per
Maintenance Section instructions if necessary.
Machine has a perceptible rolling motion while
running.
Spider Finger Screws? Adjust per procedure in Maintenance Section.
Yoke?
Check to make sure that both fi ngers of the yoke press
evenly on the wear cap. Replace yoke as necessary.
Blade Pitch?
Check to ensure that each blade is adjusted to have the
same pitch as all other blades. Adjust per maintenance
section in manual.