Maintenance - 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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RT765E-2 SERVICE MANUAL
Maintenance
Troubleshooting
Table 8-3
Symptom
1.
Brakes are poor.
2.
Hard brake pedal with engine
running.
3.
Brakes lock up.
4.
Uneven braking or pad wear.
General
A schedule for the periodic adjustment, cleaning, inspection,
and lubrication of brake equipment should be established by
the operator on the basis of past experience and severity of
operation.
The disc brakes are not adjustable. Brakes should be
cleaned, inspected, and linkage lubricated periodically to
assure maximum performance.
GROVE
Probable Cause
a.
Lining thickness less than
0.125 in (3 mm).
b. Brake pedal operation.
c.
Restriction or leaks in lines.
d. Low hydraulic oil flow.
e.
Air in brake lines.
f.
Brake
pads/linings
grease-soaked.
g. Engine not running.
h. Brake relief valve stuck open.
i.
Dual
accumulator
valve not charging
j.
Accumulators
not
charged.
a.
Pedal travel being interfered
with.
a.
Too much hydraulic flow.
b. Brake
pedal
push
improperly adjusted, causing
brakes to be always applied.
a.
Lining thickness less than
0.125 in (3 mm).
b. Grease on the pads/linings.
Bleeding the Brake System
The brake system should be bled whenever air becomes
entrapped within the brake system (usually characterized by
a spongy feeling during brake pedal application), whenever
any brake system line has been opened, or whenever any
brake component has been replaced.
Always start at the point in the system that is furthest from
the tandem brake valve and work back toward the tandem
Published 9-04-2014, Control # 422-08
UNDERCARRIAGE
Solution
a.
Replace lining.
b. Free mechanical linkage.
c.
Check all lines for leaks and
restrictions.
d. Check the hydraulic oil level in
reservoir and check flow from
the tandem brake valve.
e.
Bleed the brakes.
are
f.
Replace pads/linings.
g. Start engine. Due to the
operation, the engine must be
running to provide full brake
power.
h. Replace the relief valve.
charge
i.
Check valve operation and
repair or replace valve.
pre-
j.
Check
charge.
a.
Check all pedal linkage and
ensure it is free and adjusted
properly.
a.
Check the flow from the flow
divider. Too much flow will
c a u s e t h e b r a k e s t o b e
applied by the oil trapped in
the power boost chamber.
rod
b. Adjust the push rod linkage so
the brake pedal and push rod
fully return.
a.
Replace the lining.
b. Replace the pads/linings.
accumulator
pre-
8
8-15
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- Brakes
- Electrical System
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Table of Contents
Troubleshooting
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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.
This answer is automatically generated
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.
This answer is automatically generated