TYMCO 600 2008, Operator'S Manual

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600OPTRS 14 2008
HYDRAULIC SYSTEM
Proper sweeper operation is dependent upon a properly functioning hydraulic system. Compo-
nents such as the gutter broom(s), pick-up head lift assembly and hopper dump are all depend-
ent on the hydraulic system for their proper operation.
The main hydraulic system components to be familiar with are:
A. Hydraulic Reservoir
B. Hydraulic Pump
C. Valve Bank
A. HYDRAULIC RESERVOIR
The hydraulic reservoir is located on the left side of the sweeper between the auxiliary
engine and blower housing (See Page 3). The reservoir oil capacity is 21.5 gallons and
the operator must check the oil level daily! The sight gauge is located on the side of the
reservoir for easy checking. If the oil level is at the “ADD” mark or below, refill reservoir
before operating sweeper.
Use 10W engine motor oil. (See Parts & Service Manual for
list.)
Located on the hydraulic reservoir is the hydraulic system oil filter. The filter should be
changed every 100 hours of sweeper service. The hydraulic oil filter is a spin-on
automotive type (TYMCO P/N 5010080).
NOTE : Drain the break-in oil after initial 100 hours of operation , then once every
12 months or 1000 hours, whichever occurs first. Drain hose is located on the
bottom of the reservoir.
WARNING: Operator should never check for hydraulic leak using bare hand. High
pressure used in system could result in oil being injected into hand
causing serious injury. Always turn sweeper off before servicing.
B. HYDRAULIC PUMP
The hydraulic pump is driven by the sweeper auxiliary engine.
C. CONTROL VALVES
The hydraulic valve assembly is used to control the flow of oil to the various hydraulic
components. The Model 600 valve assembly is located on the left side of the sweeper
just below the PTO assembly. The standard valve assembly is made up of four control
valve segments attached to a common manifold. The first pair of valves control the
gutter brooms, with the second pair controlling the dump door and pick-up head. Addi-
tional valves will be found if optional hydraulically controlled equipment is ordered on the
sweeper.
Separating the first two valves from the rear two valves is a relief valve and a by-pass
valve. The relief valve reduces the pressure from 2500 PSI to 1450-1500 PSI. There-
fore, the primary system pressure of 2500 PSI from the pump is necessary for gutter
broom operation but is reduced to 1450-1500 PSI for the pick-up head and the dump
door. The control valves are solenoid actuated meaning that they are shifted from inside
the cab by use of electric switches. These switches are located on the sweeper control
console panel with the exception of the dump switch which is located externally on the
left-side of the sweeper just above the fender well.