Removal And Installation - Manitowoc Grove 5540F Service Manual

5540F/YB5515 SERVICE MANUAL
Problem
Engine knocking.
High engine idle.
Engine running excessively rich in
gasoline mode (sooty black smoke).
Engine running excessively rich in LPG
mode (sooty black smoke).
Below normal engine temperature.
Lack of power.

Removal And Installation

Removal
DANGER
A raised and badly supported machine can fall on you
causing severe injury or death. Position the machine on a
firm, level surface before raising one end. Ensure that the
other end is securely chocked. Do not rely solely on the
machine hydraulics or outriggers to support the machine
when working under it.
1. Raise and support the frame far enough to remove the
rear axle assembly.
2. Remove the engine cover and rear deck cover plate.
GROVE
Possible Cause
1. Incorrect engine timing.
2. Fuel contamination or low octane
fuel.
3. Engine overheating.
1. Leakage in intake manifold.
2. Incorrect engine timing.
1. Incorrect fuel return pressure.
2. Faulty engine temperature sensor.
3. Faulty air temperature sensor.
4. Faulty injector.
1. Dirty or clogged air cleaner.
2. Loose LPG hose connection to the
vaporizer unit.
1. Defective thermostat.
2. Defective temperature gauge or
sender.
1. Engine overload.
2. Intake air restriction.
3. Clogged fuel filter.
4. Overheated engine.
5. Faulty engine.
3. Disconnect the ground cable and battery cable from the
battery.
4. Disconnect the frame electrical wire harness from the
engine electrical wire harness.
5. Disconnect the transmission high temperature switch
from the frame electrical wire harness.
6. Disconnect the transmission electrical wire harness from
the instrument panel wire harness.
7. Drain the radiator. Disconnect the upper and lower
hoses from the radiator.
8. Disconnect the transmission cooling lines from the
radiator. Put plugs and caps on all lines to keep dirt out
of the system.
9. Disconnect the hot water heater hoses from the engine.
10. Remove the radiator.
Published 10-21-2010, Control# 198-04
ENGINE AND ENGINE SYSTEMS
Solution
1. Check engine timing and adjust.
2. Drain and replace fuel (minimum
87 octane).
3. Check thermostat.
necessary. Check for low coolant
level. Add coolant if necessary.
1. Check and repair.
2. Check engine timing and adjust.
1. Less than 5 psi (34 kPa) is OK.
2. Check and replace.
3. Replace.
4. Replace.
1. Check and replace
2. Check and repair.
1. Remove and check thermostat.
2. Check gauge, sendor and all
connections.
1. Reduce the load.
2. Service air cleaner.
3. Replace fuel filter.
4. Refer to Engine
Manual. Check
radiator/oil cooler fins. Check
thermostat and coolant level.
5. Repair engine.
Replace if
Operator's
6
for plugged
6-27