Maintenance; Warm-Up Procedure; Hoist Area Access - Manitowoc Grove RT765E-2 Service And Maintenance Manual
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- Operator's manual (156 pages) ,
- Operator's manual (178 pages)
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HOIST AND COUNTERWEIGHT
MAINTENANCE
Warm-up Procedure
A warm-up procedure is recommended at each start-up and
is essential at ambient temperatures below 40°F (4°C).
The prime mover should be run at its lowest recommended
RPM with the hydraulic hoist control valve in neutral allowing
sufficient time to warm up the system. The hoist should then
be operated at low speeds, forward and reverse, several
times to prime all lines with warm hydraulic oil, and to
circulate gear lubricant through the planetary gear sets.
Failure to properly warm up the hoist, particularly under
low ambient temperature conditions, may result in
temporary brake slippage due to high back pressures
attempting to release the brake, which could result in
property damage, severe personal injury or death.
Hoist Area Access
Platform must not be used for hauling passengers as
death or serious injury could occur.
No storage of components are allowed on the platform.
Only one person at a time is allowed on the platform.
5-2
WARNING
WARNING
Published 9-04-2014, Control # 422-08
RT765E-2 SERVICE MANUAL
Use the hoist access platform (1) (Figure 5-1) when working
in the hoist area.
Working Configuration
1
7451-2
FIGURE 5-1
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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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