2019 23 D4OPTRS
PROBLEM CAUSE SOLUTION
Blower shaft not turning Belt not tight Tighten. See Blower
Assembly-Disassembly and
Assembly Section.
Defective fl ex coupling
or PTO Shaft
Remove and Replace
Loose sheave Tighten. Replace key as
necessary.
Poor engine
performance
Engine problems Refer to engine manual
supplied with sweeper for
tune-up, etc.
WARNING: Before servicing, stop auxiliary engine and remove ignition
key or disconnect negative battery cable.
!
SERVICE & MAINTENANCE
In order to simplify the service and maintenance on the engine which powers the sweeper unit,
refer to the Engine Operator’s Manual for the routine service and maintenance procedures
and schedules. (By days, hours, miles, etc.)
Power Unit drive belts shall be checked on a regular basis for correct tension. Belts should be
inspected at a minimum of every 100 hours of operation. If excessive “belt slap” or vibration
is noticed before the minimum check interval, then retention the belt immediately. Failure
to do so can result in premature failure of belt, bearings, and coupling assembly. Incorrect
belt tension can also promote metal fatigue which can cause brackets, mounts, and other
components to crack.
TROUBLESHOOTER’S GUIDE
SWEEPER BLOWER SHEAVE RATIO
The blower is belt driven through a set of sheaves with a 1.194:1 speed up ratio.
Engine Low/High RPM Blower Low/High RPM
1100/2100 1313/2507
HAYS BEARING SUPPORTED STUB SHAFT ASSEMBLY MAINTENANCE
Grease both grease zerks on the Hayes bearing supported stub shaft with an unleaded
extreme pressure lithium grease with NLGI No. 2 Grade as follows:
Bearing Housing - The grease zerk is located on the bearing housing with a low pressure
relief valve 180 degrees across. Depending on general maintenance schedule, greasing
of the bearing housing should not exceed 2000 hours of run time. Remove any excessive
grease or grit from the low pressure relief valve and make sure it is actuating freely. Push
the relief valve pin all the way in. Pump several shots of grease into the bearing housing
grease zerk using a standard grease gun until the relief valve pin pops out. If the relief valve
pin does not pop out after several shots, remove the valve and grease until grease protrudes
from the hole and reinstall valve.
Coupling Spline - The grease zerk is located on the end of the stub shaft. During general
maintenance cycle, pump 2 to 3 shots of grease using a standard grease gun into the shaft
grease zerk.
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