Multi Pro 5700 - Toro

Traction Circuit Relief Pressure Test
1. Make sure hydraulic oil is at normal operating temperature
by operating the machine for approximately 10
minutes. Make sure the hydraulic tank is full.
2. Park machine on a level surface, stop engine, engage
parking brake, and remove key from the ignition
switch. After turning engine off, operate all hydraulic
controls to relieve hydraulic system pressure.
CAUTION
9. Release traction pedal and stop engine. Record test
results.
10.If traction pressure is too low, inspect traction pump
relief valves (Fig. 15). Clean or replace valves as necessary.
These cartridge type valves are factory set, and
are not adjustable. If relief valves are in good condition,
traction pump or wheel motors should be suspected of
wear and inefficiency.
11. Disconnect pressure gauge from machine and reconnect
hydraulic hose.
Prevent personal injury and/or damage to equipment.
Read all WARNINGS, CAUTIONS, and Precautions
for Hydraulic Testing at the beginning
of this section.
3. Clean and disconnect hydraulic pressure hose from
piston pump fitting on right side of pump for function to
be checked (Fig. 14):
1
Forward pressure hose is upper hose
Reverse pressure hose is lower hose
4. Install T–connector with 10,000 PSI test gauge between
the piston pump fitting and the disconnected
hose.
5. After installing pressure gauge, start engine and run
at idle speed. Check for hydraulic leakage and correct
before proceeding with test.
Figure 14
1. Forward pressure hose 2. Reverse pressure hose
2
6. Operate the engine at high idle speed (3050 – 3150
RPM).
CAUTION
1
Move machine to an open area, away from people
and obstructions.
7. Drive machine to an open area and engage the parking
brake.
8. Sit on seat, apply brakes fully, and slowly depress the
traction pedal in the appropriate direction (forward or reverse).
While pushing traction pedal, look at pressure
reading on gauge:
Figure 15
1. Forward relief valve 2. Reverse relief valve
2
GAUGE READING TO BE:
Forward: maximum of 4000 PSI
Reverse: maximum of 4000 PSI
Hydraulic System Page 4 – 18 Multi Pro 5700–D