Dump trailers are meant to dump things, and if the pump on your Lamar trailer is malfunctioning, it leaves your dump trailer useless. KTI has a nifty little guide that goes over what symptoms are connected to what issues.
Symptoms
The most symptoms from most common to least are listed below. If your dump trailer is having any, check out the guide.
cylinder won’t retract motor
pump won’t lower
cylinder won’t extend
cylinder won’t retract
won’t hold load
start solenoid just clicks
load bounces when cylinder retracts
motor not running
excessive heat from unit
reservoir overflows
struggles to lift load
not building pressure
won’t lift load
cylinder extends while not operating
aeration of hydraulic fluid
start solenoid stays on
Causes
The most common causes of pump issues to the least common are listed below.
low battery voltage
poor ground connection
packing on cylinder rod worn out
coil not energizing
loose inlet
directional valve not shifting
dirty contacts in hand control
check hand control
bad seals in cylinder
clogged orifice
bad start solenoid
thermal pressure lock coil
pump not priming
bad diode
debris in load holding valve
hoses connected backwards
rust in motor
additional valving on cylinder
If you checked all 18 causes and none of them seem to fix your issue, contact KTI at 949-752-8818 or on their website here.
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