Toro Sand Pro 3040 Service Manual page 107

Test Procedure
Sand Pro ® 3040 and 5040
20251SL Rev A
Load with fluid flow Under Load. A drop in flow under load of more than 12%
indicates an internal leak or malfunctioning relief valve in the hydraulic pump.
The final traction circuit test is verifying the hydraulic pump forward direction
relief valve operation. A worn hydraulic pump or malfunctioning relief valve is
less efficient. Eventually, enough fluid bypass will cause the unit to stall under
heavy load conditions. Continued operation can generate excessive heat, cause
damage to seals and other components in the hydraulic system, and affect
overall machine performance.
Special Equipment Required:
•
Flow meter with pressure gauge that has at least a 57 liters/minute (15
gallons/minute) capacity
•
Hydraulic test hose
•
Non-contact tachometer (phototach)
Refer to Traction Circuit Component Failure (page 5–5)
information regarding the importance of removing contamination
from the traction circuit.
1. Park the machine on a level surface, lower any attachments, and set the key
switch to the O position.
FF
2. Read and adhere to the information provided in
(page 5–23).
3. Ensure that the traction pedal is correctly adjusted for the N
refer to Adjusting the Traction System for Neutral (page
Review and follow the
the machine.
4. Raise all of the wheels off the ground and support the machine with jack
stands.
5. Ensure the parking brake is disengaged.
6. Clean the hydraulic hose and hydraulic tube above the front wheel; refer
to Figure 37.
IMPORTANT
WARNING
Jacking Instructions (page 1–6)
Page 5–37 Hydraulic System: Testing the Hydraulic System
for
Testing the Hydraulic System
position;
EUTRAL
5–52).
before lifting