Michco sc8000, Руководство по обслуживанию

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Hydraulic System 121 Service Manual – SC8000
Accessory Pump 2a Circuits
Displacement
Cu. In.
GPM RPM
In
RPM
Out
PSI
Relief
PSI
Accessory Pump 2a non-priority branch, engine @
2200 RPM, no systems running (test port TP2)
1.20 8.42 2200 *370 2700
Main scrub brush motors (only) setting (A) no load
broom off floor and ** scrub setting #3 pressure (test
port TP1)
4.5
415
400
A 850
1700**
Main scrub and RT side scrub motors #3 pressure
(test port TP1)
1880
Right side brush motor speed 11.3 160
Main scrub and dual sweep (test port TP2) 1780
Side sweep broom motor speed 17.9 100
Main scrub, RT scrub and LT sweep (test port TP2) 1950
Squeegee cylinder 1.50 x 5.00 315
Accessory Pump 2b Circuits
Displacement
Cu. In.
GPM
RPM
In
RPM
Out
PSI
Relief
PSI
Accessory Pump 2b priority branch, engine @ 2200
RPM no systems running (test port TP3)
1.20 3.0 2200 * 296 1500
Steering unit (driving and turning) 4.5 500
* The bypass pressure is the pressure reading with no motor or cylinder operating (flow-through).
** Scrub brush system hydraulic pressure under load setting #3 (maximum scrub pressure)
Test
Port
Pressure
Type
Controlled
by
Pressure
Setting
PSI
Scrub lift cylinder 1.50 x 5.00,
engine at 2200 RPM
TP4
Lift
Pressure
Proportioning
Valve S7
1 750 - 774
2 750 - 767
3 745 - 779
TP5
Down
Pressure
Proportioning
Relief Valve
S5
1 333 - 346
2 393 - 412
3 458 - 499
Propulsion Pump Circuits
Displacement
Cu. In.
GPM
RPM
In
RPM
Out
PSI
Relief
PSI
Hydrostatic pump charge pressure 250
Hydrostatic pump 1.44 13.7 2200
Forward drive wheel motor speed test @ 8 mph level
ground, smooth concrete, no accessory systems
running, foot at full speed forward, set 153 RPM @
2400 RPM
18.3
FWD
153
1060@
2200
RPM
1200@
2400
RPM
F
3500
Reverse same as above @ 4 mph, set 78 RPM
@2400 RPM
REV
78
R
2500