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316
TRIM AND TILT
MODES OF OPERATION
MODES OF OPERATION
The trim/tilt hydraulic assembly achieves trim and
tilt movement through the following modes of
operation.
Trim-OUT / Tilt-UP Mode
When the UP switch is pressed, the trim/tilt motor
rotates clockwise (as viewed from pump end) and
turns the pump gears.
Fluid pressure pushes the UP check valve off its
seat, and fluid passes through the valve to the
bottom of all cylinders, pushing the pistons UP.
Fluid is pushed from the top of the tilt cylinder by
the piston and returns to the pump through the
open DOWN check valve.
In the trim range, fluid is pushed from the top of
the trim cylinders by the pistons and returns to the
reservoir.
Only fluid from the top of the tilt cylinder is
returned to the pump. Because the cylinder rod
displaces some fluid, that volume is less than the
volume of the bottom of the tilt cylinder. So, addi-
tional fluid is drawn into the pump from the reser-
voir.
When all the cylinders are completely extended,
the pressure increases until the UP relief valve
opens at the tilt-up stall pressure (approximately
1500 psi (10342 kPa)).
1.
Up shuttle valve
2.
Down shuttle valve
3.
Down check valve
4.
Up check valve
5.
Tilt cylinder
6.
Trim cylinders
7.
Up relief valve
DRC3462
2
3
1
7
4
5
6
Содержание E250DHLSCS
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Страница 186: ...184 FUEL SYSTEM NOTES NOTES Technician s Notes Related Documents Bulletins Instruction Sheets Other...
Страница 191: ...OILING SYSTEM OIL SUPPLY DIAGRAMS V6 189 9 006870 Rear View 6 4 5 3 Top View 1 2...
Страница 192: ...190 OILING SYSTEM OIL RECIRCULATION DIAGRAMS V6 OIL RECIRCULATION DIAGRAMS V6 004111a 2 4 6 1 3 5...
Страница 212: ...210 COOLING SYSTEM NOTES NOTES Technician s Notes Related Documents Bulletins Instruction Sheets Other...
Страница 216: ...214 POWERHEAD SERVICE CHART Taper Pin Tool Hole for Storage Scale FULL SIZE...
Страница 242: ...240 POWERHEAD POWERHEAD VIEWS POWERHEAD VIEWS Port Hose Routings 006972...
Страница 243: ...POWERHEAD POWERHEAD VIEWS 241 11 Starboard Hose Routings 006952...
Страница 244: ...242 POWERHEAD POWERHEAD VIEWS Port 006993...
Страница 245: ...POWERHEAD POWERHEAD VIEWS 243 11 Starboard 006973...
Страница 246: ...244 POWERHEAD POWERHEAD VIEWS Front 006974...
Страница 247: ...POWERHEAD POWERHEAD VIEWS 245 11 Rear 006975...
Страница 248: ...246 POWERHEAD POWERHEAD VIEWS Top 006957...
Страница 252: ...250 MIDSECTION SERVICE CHART 004117...
Страница 314: ...312 GEARCASE COUNTER ROTATION NOTES NOTES Technician s Notes Related Documents Bulletins Instruction Sheets Other...
Страница 346: ...344 TRIM AND TILT NOTES NOTES Technician s Notes Related Documents Bulletins Instruction Sheets Other...
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