Charge Hydraulic System - Toro Reelmaster 5500-D Service Manual

Charge Hydraulic System

NOTE: When initially starting the hydraulic system with
new or rebuilt components such as motors, pumps, or
lift cylinders, it is important that the hydraulic system be
charged properly. Air must be purged from the system
and its components to reduce the chance of damage.
IMPORTANT: Change hydraulic oil filter whenever
hydraulic components are repaired or replaced.
1. Park machine on a level surface, and turn the engine
off.
2. Make sure all hydraulic connections, lines, and com-
ponents are secured tightly.
3. If component failure was severe or the system is con-
taminated, flush and refill hydraulic system and tank
(see Flush Hydraulic System).
4. Make sure hydraulic reservoir is full. Add correct oil
if necessary (see Check Hydraulic System Fluid).
5. Disconnect fuel cutoff solenoid lead to prevent the
engine from starting.
6. Check control cable to the hydrostat for proper ad-
justment, binding, or broken parts.
7. Make sure traction pedal and the lift control lever are
in the neutral position. Turn ignition key switch; engage
starter for fifteen (15) seconds to prime the traction and
charge pumps.
8. Reconnect fuel cutoff solenoid lead.
WARNING
Before jacking up the machine, review and follow
Jacking Instructions in Chapter 1 - Safety.
9. Raise one front and rear wheel off the floor, and place
support blocks under the frame. Chock remaining wheel
to prevent movement of the machine.
Reelmaster 5500-D
10.Make sure traction pedal and lift control lever are in
neutral. Start engine and run it at low idle of 1150 rpm.
The charge pump should pick up oil and fill the hydraulic
system. If there is no indication of fill in 30 seconds, stop
the engine and determine the cause.
11. After the hydraulic system starts to show signs of fill,
actuate lift control lever until the lift cylinder rod moves
in and out several times. If the cylinder rod does not
move after 10 to 15 seconds, or the pump emits abnor-
mal sounds, shut the engine off immediately and deter-
mine cause or problem. Inspect for the following:
A. Loose filter or suction lines.
B. Loose or faulty coupler on the pump.
C. Blocked suction line.
D. Faulty charge relief valve.
E. Faulty charge pump.
12.Adjust traction pedal to the neutral position (see Ad-
just Traction Drive for Neutral).
13.Check operation of the traction interlock switch (see
Check Interlock System in Chapter - 5, Electrical Sys-
tems).
14.Remove block from wheels and lower machine. Re-
move chocks from remaining wheel.
15.If the traction pump or a wheel motor was replaced
or rebuilt, run the traction unit so all wheels turn slowly
for 10 minutes.
16.Operate traction unit by gradually increasing its work
load to full over a 10 minute period.
17.Stop the machine. Check tank and fill if necessary.
Check hydraulic components for leaks and tighten any
loose connections.
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