Manitowoc Grove TMS9000-2 Series, Руководство по обслуживанию

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Grove
Published 01-14-2021 Control # 707-01
2-9
TMS9000-2 SERVICE MANUAL HYDRAULIC SYSTEM
2
MAINTENANCE
Troubleshooting
SYMPTOM PROBABLE CAUSE SOLUTION
No hydraulic oil flows in
systems.
Low hydraulic oil level. Fill reservoir.
Reservoir-to-pump suction
lines broken or restricted. Air
entering at suction lines. Pump
not priming.
Clean, repair, or replace lines
as necessary. Check lines for
security, absence of cracks,
and proper attachment.
Tighten, repair, or replace parts
as necessary.
Pump shaft sheared or
disengaged.
If drive shaft is damaged or
sheared, remove and repair or
replace as necessary
Internal contamination.
Drain, flush with recommended
oil mixture, then drain and refill
system with recommended
hydraulic oil.
Internal pump issue. Repair or replace pump.
Slow response. Low hydraulic oil level. Fill reservoir.
Hydraulic oil temperature too
high (watery thin oil) or too low
(thick sluggish oil).
If too low, warm up system. As
needed, troubleshoot cooler
circuit. If too high, troubleshoot
cooler circuit. Likely suspects
are in-line check valve and
related hydraulic circuits.
Faulty pump section(s) .
Repair or replace pump
section(s) or entire pump.
Software settings .
Review and edit software
settings.
Pump noise accompanied by
hydraulic oil foaming in
reservoir.
Low hydraulic oil level. Fill reservoir.
Excessive engine speed. Regulate engine speed.
Air entering at suction lines.
Check all lines for security and
proper repair. Tighten, repair,
or replace as needed.
Excessive pressure buildup.
System relief valve set too
high.
Using adequate pressure
gauge, adjust system relief
valve as necessary.
Restricted pump-to-control
valve supply line. Clean, repair, or replace line as
necessary.
Fo
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Reference
Only