Outrigger/Rear Steer Valve; Description - Manitowoc Grove RT765E-2 Service And Maintenance Manual
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- Operator's manual (178 pages)
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RT765E-2 SERVICE MANUAL
OUTRIGGER/REAR STEER VALVE
Description
The outrigger/rear steer valve Figure 2-28 controls the
outrigger circuit and the rear steer circuit. The valve is
mounted on the front face of the carrier frame front cross
member forward of the swivel.
The inlet section contains a 2500 psi (17,200 kPa) relief
valve and a solenoid valve. The solenoid valve is normally
open bypassing oil from the inlet port to the tank port.
Activation of either the outriggers or the rear steer energizes
5
1
4
3
2
GROVE
8
2
7531-1
7
6
1
8
Published 9-04-2014, Control # 422-08
the solenoid valve to close and allow oil to flow to the
selected circuit.
The rear steer section contains a three position four-way
solenoid controlled directional valve.
The outrigger section contains a three position four-way
solenoid controlled directional valve.
Both four-way solenoid valves contain manual override
actuators which allow the valves to be shifted if electrical
power is lost.
5
2
4
7
6
4
7
5
6
7531-3
HYDRAULIC SYSTEM
8
3
7531-2
FIGURE 2-28
2-47
2
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Troubleshooting
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Cummins QSB 6.7 diesel engine not starting
The provided context does not contain specific troubleshooting steps for why the Cummins QSB 6.7 diesel engine in the Manitowoc Grove RT765E-2 might not start. However, common reasons for a diesel engine failing to start include:
1. Fuel Issues – Low or contaminated fuel, clogged fuel filters, or air in the fuel system.
2. Battery Problems – Weak or dead battery preventing proper cranking.
3. Starter Motor Failure – Faulty starter preventing engine turnover.
4. DPF Regeneration Interruption – If the Diesel Particulate Filter (DPF) regeneration was interrupted, it could affect engine performance.
5. Electrical or Sensor Faults – Wiring issues, faulty sensors, or an inactive safety switch.
If the engine does not start, checking these possible causes is recommended.
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Cummins diesel engine QSB 6.7 cranking but failing to start what could be the problem
Possible reasons why a Manitowoc Grove RT765E-2 with a Cummins QSB 6.7 diesel engine is cranking but failing to start could include:
1. Fuel Issues
- Insufficient or contaminated fuel.
- Clogged fuel filter or fuel lines.
- Faulty fuel pump preventing fuel delivery.
2. Air Intake Problems
- Blocked or restricted air filter.
- Turbocharger failure affecting air intake.
3. Electrical Issues
- Weak or faulty battery preventing proper cranking speed.
- Faulty starter motor or wiring connections.
- Malfunctioning engine control module (ECM).
4. Injection System Failure
- Faulty fuel injectors or injection pump.
- Air trapped in the fuel system.
5. Sensor or Control Failures
- Malfunctioning crankshaft or camshaft position sensor preventing proper timing.
- Faulty engine temperature sensor or other control module issues.
6. Low Oil Pressure or Safety Shutoff
- Engine protection systems preventing startup due to low oil pressure or other safety concerns.
Checking fuel supply, air intake, battery condition, and diagnostic codes can help identify the issue.
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