Toro 03126SL Rev C Service Manual Serial No 240000001 Above Workman 3000 4000

Procedure for Gear  Pump Flow and System  Relief
Pressure Test
8.  While watching tester pressure gauges, slowly close
flow control  valve on  the tester until  1500 PSI  (103.4
Bar) is obtained on gauge. Verify that pump speed con-
tinues to  be  correct (2700  RPM). Record  flow  meter
reading.
1.
Make sure hydraulic oil is  at normal operating tem-
perature by operating the vehicle  for approximately 10
minutes.
GAUGE READING TO BE: Flow should be approxi-
mately 4.3 GPM (16.3 LPM) at 1500 PSI (103.4 Bar).
2.
Park vehicle on a level surface, raise and support bed
(if installed),  shut engine  off and  engage the  parking
brake. After turning engine off, operate all hydraulic con-
trols to relieve hydraulic system pressure.
9.  Open tester flow control valve and stop engine.
10.If
pump flow specification is not met, inspect for:
3.
erly (see Operator’s Manual).
Make sure that gear pump drive belt is adjusted prop-
A.  Slipping pump drive belt.
B.  Worn or stuck relief valve.
CAUTION
C. Pump suction line restriction.
D. Gear pump needs to be repaired or replaced.
To test system relief pressure:
Prevent personal injury and/or damage to equip-
ment. Read all WARNINGS, CAUTIONS, and Pre-
cautions for Hydraulic Testing  at the beginning
of this section.
11.
A.  Make sure  flow  control valve  on  tester is  fully
open.
IMPORTANT: Make  sure that  the oil flow  indicator
arrow on the flow meter is showing that the oil  will
flow from the pump, through the tester, and into the
hydraulic hose.
B.  Start engine  and depress  accelerator pedal  so
engine is running at high idle (3600 + 50 RPM).
IMPORTANT: Hold  steering   wheel  at  full  lock
only long enough to get a system pressure read-
ing. Holding the steering wheel against the stop
for an extended period can damage the steering
control valve.
4.
With the engine off, clean hose fitting and disconnect
the pressure hose from the gear pump (Fig. 14). Install
tester with pressure gauges and flow meter in series be-
tween the gear pump and the disconnected hose. Make
sure the tester flow control valve is open.
C. Watch pressure gauge carefully while turning the
steering wheel completely in one direction (full steer-
ing lock) and holding momentarily.
5.
Make sure the hydraulic  reservoir (transaxle) is full
after connecting the tester.
D. System  pressure should be approximately 1800
PSI (124.1 Bar) as the relief valve lifts. Return steer-
ing wheel to the center position.
CAUTION
E.  Release accelerator pedal to allow engine to re-
turn to low idle and  turn off vehicle. Record test re-
sults.
The engine must be running to perform hydrau-
lic tests. To guard against possible personal in-
jury, engage parking  brake and keep  clothing,
hands, feet,  face and  other parts  of the  body
away from fan and other moving parts.
12.If
relief pressure is incorrect, inspect for:
A.  Slipping pump drive belt.
B.  Worn or stuck relief valve.
6.
speed. Check for hydraulic leakage and correct before
proceeding with test.
After installing  tester,  start engine  and run  at  idle
13.Remove
tester and reinstall disconnected hose.
IMPORTANT: In  this  test,  the  flow tester  is  posi-
tioned before the relief valve. Pump damage can oc-
cur if the oil flow is fully restricted.
7.
Start engine and adjust engine speed with accelera-
tor pedal so  pump speed is 2700 RPM  (engine speed
approximately 3600  RPM). Verify  pump speed  with a
phototac.
Workman 3000/4000 Series
Page 9 – 17
Hydraulic System
Product Specification
CategoriesLawn Mower Manual, Sprinkler and Irrigation Manuals, Toro Sprinkler and Irrigation Manuals
Tags,
Download File
Please Enter the Security Characters Shown Below. Letters are Case Sensitive. Your download link will appear upon completing this step.
- 302 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)
Canada 1-888-225-4886 USA 1-888-384-9939, Lawn Mower
Document File TypePDF
Publishertoro.com
Wikipedia's PageToro Company
CopyrightAttribution Non-commercial
(0 votes, average: 0 out of 5)

Submit your review (optional)
(will not be displayed)
* Required Field

Leave a Reply

Your email address will not be published. Required fields are marked *

*
*
Website