51-3849, 5/26/06 33
Hydraulic Cylinders - Lift & Swing
Spring-Chain Assemblies
SERVICE SECTION
TROUBLESHOOTING
Problem Possible Cause Possible Solution
Transport chain too loose when
traveling between job sites.
Adjust according to Adjustment:
Transport Chain.
Travel speeds too fast when
sweeping.
Do not travel at speeds over 5 mph (8
kph).
Springs on spring-chain assmblies
stretching
Problem Possible Cause Possible Solution
Manual valve
- Control rods not
connected or are binding
Check control rod linkage; make sure
all parts are connected and are not
binding; fix if necessary
Electric valve - Set screw in flow
divider on manifold too tight
Loosen jam nut and then turn set
screw in until it stops; turn set screw
out 1 1/2 turns; tighten jam nut
Electric valve - No power from controls
because wires are broken or
Reconnect wires if disconnected;
replace wires if broken
Electric valve
- No power from controls
because switch is broken
Replace switch
Both types of valves
- Hydraulic oil
level too low
ill tank to 2-3 inches (51-76mm) from
top of tank with ISO VG-46 oil
Both types of valves
- Hoses or fittings
loose or disconnected
Tighten hoses and fittings
Both types of valves
- Restriction in
hoses
Remove bends in hoses, remove
obstructions inside hoses
Electric valve
- Set screw in flow
divider on manifold out of adjustment
Loosen jam nut and then turn set
screw in until it stops; turn set screw
out 1 1/2 turns; tighten jam nut
Electric valve - Dirt or debris in spools Contact SWEEPSTER,LLC Technical
Service
Manual valve
- Flow too high because
restrictor fitting missing from cylinder
Reinstall restrictor fitting on barrel end
of cylinder
Manual valve
- Flow too high even
though restrictor fitting is installed
Contact Sweepster, LLC for smaller
orifice fitting
Electric valve
- Set screw in flow
divider on manifold too loose
Loosen jam nut and then turn set
screw in until it stops; turn set screw
out 1 1/2 turns; tighten jam nut
Hydraulic cylinder neither extends
nor retracts
Hydraulic cylinder only extends or
only retracts
Hydraulic cylinder extends or retracts
too quickly
