Steering Circuit Relief Pressure Test (Using Pressure Gauge) - Toro Groundsmaster 5900 Series Service Manual

Steering Circuit Relief Pressure Test (Using Pressure Gauge)

STEER CYLINDERS
R L
6.1 CID
P E T
STEERING
UNIT
TO HYDRAULIC
RESERVOIR
PRESSURE
GAUGE
TO HYDRAULIC
RESERVOIR
10.6 GPM
FLOW FROM
GEAR PUMP
g287780
Procedure for Steering Circuit Relief Pressure Test
Groundsmaster ® 5900 & 5910
16227SL Rev B
LH WING
DECK LIFT
C 3 C 4
OR3
.088"
S4
S2
OR2
.055"
G3
G2
LS
CF OR1
.030"
LC
RV1
80 PSI
G1
2100 PSI
P1 STEERING / DECK LIFT MANIFOLD
TO OIL
FILTER
TO TRACTION PUMP
(CHARGE CIRCUIT)
The steering circuit relief valve pressure test should be performed to make sure
that the steering circuit relief pressure is correct.
Prevent personal injury and/or damage to equipment. Read all
WARNINGS, CAUTIONS and Precautions for Hydraulic Testing at the
beginning of this section.
1. Make sure hydraulic oil is at normal operating temperature (54 to 66 ºC (130
to 150 ºF)) by operating the machine for approximately ten (10) minutes.
2. Park machine on a level surface, lower cutting decks fully, disengage PTO,
engage parking brake and stop engine. Remove key from key switch.
3. Make sure the hydraulic tank is full.
4. Raise hood to allow access to steering/deck lift manifold that is secured to
right side frame rail.
FRONT RH WING
DECK LIFT DECK LIFT
C 2
OR5
.138"
S5
S3
OR4
.046"
1500 PSI
S1
RV2
RV3
340 PSI
CV2
50 PSI
CV3
4 PSI
T CH2 CH1
Figure 68
CAUTION
Page 5–63
C 5 C 6
OR7
.088"
S9
S6
S7
S8
G4
OR6 5 PSI
.055"
CV1
CH3
S10
BRK
OR8
.030"
Hydraulic System: Testing
CL
TO BRAKE
RELEASE
MANIFOLD