RT765E-2 SERVICE MANUAL
•
Reductions from nominal diameter of more than 5%.
•
In running ropes, six randomly distributed broken wires
in one lay or three broken wires in one strand in one lay.
•
In standing ropes, more than two broken wires in one lay
in sections beyond end connections or more than one
broken wire at an end connection.
•
In rotation resistant rope, two randomly distributed
broken wires in six rope diameters or four randomly
distributed broken wires in 30 rope diameters.
•
Severe corrosion as evidenced by pitting.
•
Manitowoc recommends that for cable extended booms,
a single damaged wire rope assembly shall require
replacement of the entire set of extension cables.
•
Manitowoc recommends for cable extended booms, that
boom extension cables be replaced every seven (7)
years.
Seizing Wire Rope
It is important to seize the ends of rotation resistant wire
ropes to prevent the displacement and unraveling of the
individual wires and strands at the ends. All preformed and
non-preformed styles of wire rope should be seized prior to
cutting. Seizings must be placed on both sides of the point
where the wire rope is to be cut.
The two preferred methods for seizing wire ropes are:
Method 1
Using a length of soft annealed wire (Figure 1-11), place one
end in the groove between two strands of the wire rope. Turn
the long end of the annealed wire at right angles to the wire
and wrap it tightly over the portion in the groove.
The two ends of the annealed wire should be twisted
together tightly. Cut off the excess wire and pound the twist
flat against the wire rope.
GROVE
Method 2
Wind a length of soft annealed wire (Figure 1-12) around the
wire rope at least seven times. The two ends should be
twisted together in the center of the seizing. Tighten the
seizing by alternately prying and twisting. Cut off both ends
of the wire and pound the twist flat against the rope.
NOTE:
7204
FIGURE 1-11
Published 9-04-2014, Control # 422-08
Non-preformed wire rope (1) (Figure 1-13) should
have three seizings (3) located on each side of the
cut (4) as compared to preformed wire rope (2).
4
1
2
INTRODUCTION
1
FIGURE 1-12
3
FIGURE 1-13
1-23
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Questions and answers
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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