Toro 01088SL Rev F Service Manual Groundsmaster 3500 D Preface Publication

Procedure for Steering Control Valve Test:
Make sure hydraulic oil is at normal operating tem-
perature by operating the machine for approximately 10
minutes.
5.  If either of these performance tests indicate a steer-
ing problem, determine if the steering cylinder is faulty
using the following procedure.
1.
A.  Park machine on a level surface with the cutting
unitsloweredandoff.Makesureengineisoffandthe
parking brake is engaged.
2.
Pressure and Gear Pump (P2) Flow tests to make sure
that pump and relief valve are functioning correctly.
Perform the  Lift and Steering Control  Valve Relief
B.  Turn the steering  wheel all  the way  to the  left
(counterclockwise) sothesteering cylinder rod isful-
ly extended.
NOTE:  This steering test procedure will be affected by
incorrect  rear tire  pressure,  binding in  the  hydraulic
steering cylinder,  extra weight  on the vehicle,  and/or
binding of the  steering fork assembly. Make sure  that
theseitems arechecked before proceeding with anyhy-
draulic testing procedure.
C. Turn engine off.
D. Read Precautions for Hydraulic Testing.
E.  Remove hydraulic hosefromthe90ofittingonthe
rod end of the steering cylinder. Plug the end of the
hose.
3.
surface.
Drive machine slowly in a figure eight on a flat level
F.  With the engine off, continue turning the steering
wheel to the left (counterclockwise) with the steering
cylinder fully extended. Observe the open fitting on
the steering  cylinder as  the wheel is  turned. If  oil
comes out  of the  fitting while turning  the steering
wheel to the left,  the steering cylinder has  internal
leakage and must be repaired or replaced.
A.  There should be no  shaking or vibration  in the
steering wheel or rear wheel.
B.  Steering wheel movements should  be followed
immediately by a corresponding rear wheel move-
ment without the steering wheel continuing to turn.
4.
Stop  unit with  the  engine running.  Turn  steering
wheel with small  quick movements in both directions.
Let go of the steering wheel after each movement.
G. Remove  plug from the  hydraulic hose.  Recon-
nect hose to the steering cylinder fitting.
A.  The steering  control  valve  should respond  to
each steering wheel movement.
6.  If  steering  problem  exists  and  steering  cylinder
testedacceptably,steeringcontrolrequiresservice(see
Steering Control Valve and Steering Control Valve Ser-
vice in the Service and Repairs section).
B.  Whensteeringwheelisreleased,steeringcontrol
should return to the neutral position with no addition-
al turning.
Groundsmaster 3500--D
Page 4 -- 53
Hydraulic System (Rev. D)
Product Specification
CategoriesLawn Mower Manual, Sprinkler and Irrigation Manuals, Toro Sprinkler and Irrigation Manuals
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- 256 pages
Document TypeCatalog
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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