LT3-00032-2-A - DDKS Industries, hydraulic components distributor
LT3-00032-2-A - DDKS Industries, hydraulic components distributor
LT3-00032-2-A - DDKS Industries, hydraulic components distributor
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TROUBLESHOOTING<br />
TROUBLESHOOTING<br />
(continued)<br />
effect of trouble possible cause fault which needs remedy<br />
pressure shocks cogging load mechanical considerations<br />
worn relief valve needed repairs<br />
worn compen- needed repairs<br />
sator<br />
slow response in replace or relocate<br />
check valves<br />
servo pressure increase pressure and check pressure drop<br />
too low to through servo filter<br />
maintain firm<br />
control<br />
excessive de- improve decompression control<br />
compression<br />
energy rates<br />
excessive line reduce line size or lengths<br />
capacitance eliminate hose<br />
(line volume,<br />
line stretch,<br />
accumulator<br />
effects)<br />
barrel blow-off re-check pump hold-down, rotating group, drain<br />
pressure<br />
heating of fluid excessive pump re-check case drain flow and repair as required<br />
or motor leak- fluid too thin<br />
age<br />
improper assembly, port timing<br />
relief valve set too low(compared to load or to compensator)<br />
instability caused by back pressure, worn parts<br />
compensator set too high (compared to relief)<br />
worn parts<br />
pump too large<br />
for fluid needs<br />
heat exchanger<br />
reservoir<br />
select smaller pump displacement<br />
water turned off or too little flow<br />
water too hot<br />
fan clogged or restricted<br />
efficiency reduced by mud or scale deposits<br />
intermittent <strong>hydraulic</strong> fluid flow<br />
too little fluid<br />
entrained air in fluid<br />
improper baffles<br />
insulating air blanket that prevents heat rejection<br />
heat pickup from adjacent equipment<br />
9
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