Toro 00062SL Rev I Greensmaster 3250 D Service Manual

Procedure for  Charge  Relief Valve  (R4) Pressure
Test
7.   Shut off engine.
If specification is  not met, remove hydrostat back
8.
1.
peraturebyoperatingthemachineforapproximatelyten
(10)
2.
Make sure hydraulic oil is at normal operating tem-
plateassemblythatcontainsthechargereliefvalve(see
Piston Pump Service in the Service and Repairs section
of this chapter). Repair or  replace relief valve compo-
nents as necessary.
minutes.
Park machine  on a level  surface with  the cutting
units lowered. Make sure engine is off and the parking
brake is engaged. Make sure the hydraulic tank is full.
9.   A dynamic charge pressure test can be performed
as follows:
A.  With tester  still connected,  sit in the  operator
seat and press the traction pedal to forward.
CAUTION
B.  While machine is  moving, monitor  the charge
pressure reading on the pressure gauge.
Before continuing further, read and  become fa-
miliar with Precautions for Hydraulic Testing.
C. The charge pressure should drop no more than
15%
from initial test reading (Step 7 above). A pres-
3.
Disconnect hydraulic  hose  from the  fitting in  the
sure drop of more than 15% indicates a traction cir-
cuit leak (e.g. a worn or damaged hydrostat and/or
wheel motor). Further testing of the traction circuit
should be completed (see Traction Drive Hydrostat
(P3) Flow and Wheel Motor Efficiency Tests in this
section).
charge port of piston pump P3 (traction pump section).
Connect T--fitting and pressure gauge to the fitting and
hose connection.
4.
Make sure that traction pedal and lift control are in
neutral and the parking brake is engaged.
5.
RPM).
Start engine and operate at full  speed (2750 + 50
10. When  testing  is  complete,  disconnect  pressure
gauge and T--fitting from the pump fitting and hose. Re-
connect hose to the pump fitting.
6.
150
Pressure gauge should read approximately 100 to
PSI (6.9 to 10.3 bar). Record test results.
Greensmaster 3250--D
Page 4 -- 39
Hydraulic System (Rev. I)
Product Specification
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- 308 pages
Document TypeService Manual
LanguageEnglish
Product BrandToro. Customer Service Representatives are available by phone: Monday - Friday 7:30 a.m. to 9:00 p.m. (CDT) - Saturday 8:00 a.m. to 8:00 p.m. (CDT) - Sunday 10:00 a.m. to 8:00 p.m. (CDT)
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Publishertoro.com
Wikipedia's PageToro Company
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