HydraMaster Boxxer 318HP, Руководство пользователя

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8-7: Troubleshooting
7.0 Engine overheats
Possible Cause Solution
7.1 Poor ventilation in the van. Open all the van doors.
Install a roof vent in the van.
Remove any dividers or other objects impeding airflow
around the truckmount.
7.2 Low oil level.
Check the level and fill as necessary.
7.3 The engine rpm is too
high.
Check the engine rpm. Adjust as necessary to run at
3,150 rpm under a vacuum load of 0” Hg.
7.4 Excessive back pressure
on the engine exhaust.
Inspect for blockage in the heat exchanger. Clean or
replace as necessary.
HIGH PRESSURE SYSTEM
1.0 The pump will not come up to normal cleaning pressure
Possible Cause Solution
1.1 The pressure adjusting
valve is faulty.
Inspect the valve. Repair or replace if necessary.
1.2 Worn seals or valves in
the pump.
Test the pump output volume directly from the pump
at normal running rpm. If the volume is below the
manufacturer’s specifications, replace the seals and
inspect for defective valves.
1.3 The pump rpm is too low. Check for a loose pump belt. Adjust or replace as
necessary.
Check the engine rpm and adjust as necessary to
3,150 rpm under a 0” Hg vacuum load.
1.4
The primary orifice is
missing or loose.
Remove and inspect. Tighten or replace as
necessary.
1.5 The primary and
secondary orifices have
been installed incorrectly.
Inspect and reverse if necessary. Refer to the
Machine Assemblies & Parts List Section.
1.6
The primary orifice is
worn.
Measure the orifice size and replace as necessary.
Correct size is 0.039”.
2.0 No pressure reading on gauge
Possible Cause Solution
2.1 The pump belt is broken. Inspect and replace if necessary.
2.2 The gauge is faulty. Replace the gauge.