Relief Valve Adjustment
RELIEF VALVE PRESSURE CHECK
WARNING
DO NOT make repairs or adjustments unless you
have been properly trained and authorized to do
so. Improper repairs and adjustments can create
dangerous operating conditions. DO NOT operate
a lift truck that needs repair. Report the problem
to your supervisor immediately. If repairs are nec-
essary, turn the key switch to the OFF position,
attach a DO NOT OPERATE tag to the control han-
dle, and disconnect the battery.
Always wear the proper protective equipment in-
cluding eye protection and petroleum resistant
gloves when servicing hydraulic components.
Thoroughly wash oil from exposed areas of skin
as soon as possible.
Completely lower all lift components and relieve
pressure before disassembling any part of the lift
pump or disconnecting any hydraulic hoses.
The hydraulic oil is hot at normal operating tem-
peratures. Be careful when draining the oil.
Never put your hands on pressurized hydraulic
components. Pressurized hydraulic oil escaping
through pin-hole leaks can be injected into the
skin.
CAUTION
DO NOT OVERFILL. Oil will leak from the breather/
filler cap if too full.
NOTE:
Check the hydraulic oil level in the reservoir
when oil is at room temperature. Remove breather
cap and add recommended hydraulic oil to proper
level, as required. See Hydraulic Pump Reservoir.
1.
Operate lift truck until hydraulic oil reaches oper-
ating temperature (43 to 49°C (110 to 120°F)).
2.
Lower the forks completely to relieve pressure
from hydraulic circuit.
3.
Turn key switch to the
OFF
position and discon-
nect the battery.
4.
Block load wheels to prevent lift truck from mov-
ing.
5.
Remove the drive unit compartment cover. Refer
to
AC Motor Repair
0620YRM1513, Accessing
the Drive Unit Compartment.
6.
Discharge the capacitor. See Special Precau-
tions.
7.
Clean any buildup of dirt from around the lift pump
and motor assembly.
WARNING
Hydraulic oil hoses and lines may be under pres-
sure. Slowly loosen the hydraulic connections to
ensure pressure has been relieved.
8.
Disconnect the hydraulic hose at the pump.
9.
Install a tee fitting and a pressure gauge of at
least 24.8 MPa (3600 psi).
10.
Verify the oil is at an operating temperature of 43
to 49°C (110 to 120°F).
11.
Raise the forks completely and continue to hold
the lift button. Read the pressure gauge while the
pump is in relief. See the Table 1 for correct pres-
sure.
NOTE:
The pump will stop after a short period of
time. Release the lower button then press and hold
again to continue.
12.
If the relief pressure is incorrect, refer to Relief
Valve Adjust in this section.
13.
After the proper relief pressure is obtained, lower
the forks completely to relieve pressure from hy-
draulic circuit.
14.
Turn the key switch to the
OFF
position and dis-
connect the battery.
15.
Discharge the capacitor. See Special Precau-
tions.
Table 1. Relief Valve Settings
Model
Relief Setting*
4500 lb
22.0 MPa (3200 psi)
* +0.6 -0.0 MPa (+87 -0 psi)@ 21°C (70°F)
Oil Temperature Full Flow
Relief Valve Adjustment
1900 YRM 1506
12
Содержание 524150797
Страница 1: ...Maintenance METRIC AND INCH SAE FASTENERS PART NO 524150797 8000 YRM 0231 ...
Страница 4: ......
Страница 8: ...Table 1 Bolts and Screws General 8000 YRM 0231 4 ...
Страница 9: ...Table 2 Studs and Nuts 8000 YRM 0231 General 5 ...
Страница 10: ...Table 3 Torque Nuts General 8000 YRM 0231 6 ...
Страница 11: ...Table 4 Torque Nuts With Nylon Insert 8000 YRM 0231 General 7 ...
Страница 20: ...NOTES 16 ...
Страница 21: ......
Страница 22: ...8000 YRM 0231 12 18 8 16 10 15 3 15 10 13 12 04 ...
Страница 23: ...Maintenance INDUSTRIAL BATTERY PART NO 524158040 2240 YRM 0001 ...
Страница 26: ......
Страница 47: ......
Страница 48: ...2240 YRM 0001 10 18 2 18 8 16 7 16 1 16 9 15 ...
Страница 49: ...Maintenance AC MOTOR REPAIR MP20 A249 MPB045VG A245 PART NO 550036879 0620 YRM 1513 ...
Страница 52: ......
Страница 58: ...Figure 5 Traction Motor Repair A245 AC Motor Repair 0620 YRM 1513 6 ...
Страница 62: ...NOTES 10 ...
Страница 63: ......
Страница 64: ...0620 YRM 1513 3 15 12 13 4 12 ...
Страница 65: ...Maintenance MASTER DRIVE UNIT MP20 A249 MPB045VG A245 PART NO 550036880 0630 YRM 1503 ...
Страница 68: ......
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Страница 76: ...0630 YRM 1503 3 15 12 13 4 12 ...
Страница 77: ...Maintenance STEERING MECHANISM MP20 A249 MPB045VG A245 PART NO 550036881 1600 YRM 1504 ...
Страница 80: ......
Страница 83: ...Figure 2 Control Handle Assembly Lift Truck Models MP20 A249 1600 YRM 1504 Control Handle 3 ...
Страница 86: ...Figure 4 Delivery Handle Optional Control Handle 1600 YRM 1504 6 ...
Страница 91: ......
Страница 92: ...1600 YRM 1504 12 18 11 17 7 16 3 15 12 13 4 12 ...
Страница 93: ...Maintenance BRAKES MP20 A249 MPB045VG A245 PART NO 550036882 1800 YRM 1505 ...
Страница 96: ......
Страница 104: ...NOTES 8 ...
Страница 105: ......
Страница 106: ...1800 YRM 1505 3 15 12 13 4 12 ...
Страница 107: ...Maintenance HYDRAULIC SYSTEM MP20 A249 MPB045VG A245 PART NO 550036883 1900 YRM 1506 ...
Страница 110: ......
Страница 117: ...Figure 4 Hydraulic Unit A249 1900 YRM 1506 Hydraulic Pump 7 ...
Страница 127: ......
Страница 128: ...1900 YRM 1506 2 15 12 13 4 12 ...
Страница 129: ...Maintenance ELECTRICAL SYSTEM MP20 A249 MPB045VG A245 PART NO 550036885 2200 YRM 1508 ...
Страница 163: ......
Страница 164: ...2200 YRM 1508 6 18 11 16 10 16 8 16 4 15 12 14 ...
Страница 165: ...Maintenance LIFTING MECHANISM MP20 A249 MPB045VG A245 PART NO 550036886 4000 YRM 1509 ...
Страница 168: ......
Страница 180: ...NOTES 12 ...
Страница 181: ......
Страница 182: ...Yale Materials Handling Corp 1400 Sullivan Dr Greenville NC 27834 2011 4000 YRM 1509 12 13 4 12 ...
Страница 183: ...Maintenance CAPACITIES AND SPECIFICATIONS MP20 A249 MPB045VG A245 PART NO 550036888 8000 YRM 1511 ...
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Страница 192: ...NOTES 6 ...
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Страница 194: ...8000 YRM 1511 6 16 3 16 12 13 4 12 ...
Страница 195: ...Maintenance DIAGRAMS MP20 A249 MP045VG A245 PART NO 550036889 8000 YRM 1512 ...
Страница 198: ......
Страница 200: ...SCHEMATIC WIRING DIAGRAMS Figure 1 Schematic Wiring Diagram Pallet Truck Sheet 1 of 3 General Notes 8000 YRM 1512 2 ...
Страница 201: ...Figure 1 Schematic Wiring Diagram Pallet Truck Sheet 2 of 3 8000 YRM 1512 General Notes 3 ...
Страница 202: ...Figure 1 Schematic Wiring Diagram Pallet Truck Sheet 3 of 3 General Notes 8000 YRM 1512 4 ...
Страница 203: ...Figure 2 Schematic Wiring Diagram Premium Walkie Sheet 1 of 7 8000 YRM 1512 General Notes 5 ...
Страница 204: ...Figure 2 Schematic Wiring Diagram Premium Walkie Sheet 2 of 7 General Notes 8000 YRM 1512 6 ...
Страница 205: ...Figure 2 Schematic Wiring Diagram Premium Walkie Sheet 3 of 7 8000 YRM 1512 General Notes 7 ...
Страница 206: ...Figure 2 Schematic Wiring Diagram Premium Walkie Sheet 4 of 7 General Notes 8000 YRM 1512 8 ...
Страница 207: ...Figure 2 Schematic Wiring Diagram Premium Walkie Sheet 5 of 7 8000 YRM 1512 General Notes 9 ...
Страница 208: ...Figure 2 Schematic Wiring Diagram Premium Walkie Sheet 6 of 7 General Notes 8000 YRM 1512 10 ...
Страница 209: ...Figure 2 Schematic Wiring Diagram Premium Walkie Sheet 7 of 7 8000 YRM 1512 General Notes 11 ...
Страница 210: ...NOTES 12 ...
Страница 211: ......
Страница 212: ...8000 YRM 1512 3 18 12 14 1 14 12 13 7 13 4 12 ...
Страница 213: ...Maintenance FRAME MPB045VG A245 PART NO 550093874 0100 YRM 1665 ...
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Страница 222: ...NOTES 6 ...
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Страница 224: ...0100 YRM 1665 7 16 12 13 ...
Страница 225: ...Maintenance PERIODIC MAINTENANCE MPB045VG A245 PART NO 550093875 8000 YRM 1666 ...
Страница 228: ......
Страница 248: ...NOTES 20 ...
Страница 249: ......
Страница 250: ...8000 YRM 1666 3 19 2 19 10 15 6 15 3 15 12 13 ...
Страница 251: ...Maintenance CONTROLLER DIAGNOSTICS MPB045VG A245 PART NO 550095689 9000 YRM 1671 ...
Страница 337: ......
Страница 338: ...Yale Materials Handling Corp 1400 Sullivan Dr Greenville NC 27834 2011 9000 YRM 1671 9 15 1 15 12 14 10 14 4 14 1 14 ...
Страница 339: ...Maintenance LITHIUM ION BATTERY MPW45HD A245 MP16 MP18 MP20 MP22 MPB045VH B245 PART NO 550136713 2240 YRM 1890 ...
Страница 342: ......
Страница 349: ...Figure 6 Battery Charger Diagram GPT 2240 YRM 1890 Charging and Troubleshooting 7 ...
Страница 360: ...NOTES 18 ...
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Страница 362: ...2240 YRM 1890 3 19 11 16 10 16 3 16 10 15 9 15 ...
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Страница 380: ...NOTES 14 ...
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Страница 382: ...2200 YRM 2030 6 17 11 16 10 16 ...