Upright SL-26, Service & Parts Manual

Page: 43 / 86

4-3
4. Troubleshooting
T R OUB LE P R OB AB LE C AUS E R E ME DY
1. F aulty battery After completely charging batteries , tes t each battery. R eplace as
2. Loos e or broken C heck continuity of all battery and motor leads . R eplace if neces s ary.
battery lead.
3. E mergency S top W ith emergency s top s witch in the ON pos ition, check continuity
s witch(es ) failed open.
1. Oil level in hydraulic C heck hydraulic fluid level, top off as required.
res ervoir is low.
2. F aulty hydraulic C heck pres s ure and delivery of the hydraulic oil. R eplace if neces s ary
pump.
1. E mergency C los e emergency
Lowering valve down valve.
open.
2. P latform Obs erve maximum load rating. (s ee Operation s ection of this manual)
overloaded, alarm s ounds .
3. F aulty controller at C heck functionality of controller. R eplace if faulty.
upper controls .
4. B attery level low. C heck B attery V oltage. C harge if neces s ary.
1. E mergency E ns ure that emergency lowering valve is completely clos ed. R eplace
if neces s ary.
lowering valve
open.
2. Leaking pis ton C heck for leakage at cylinder return line, replace s eals if neces s ary.
s eals in lift
cylinders
All functions
inoperable,
engine does
not s tart.
E ngine does
s tart but no
hydraulic power.
P latform drifts
down after being
elevated
E ngine does
s tart, have
hydraulic power
but no electrical
function.
4.3 T
ROUBLESHOOTING
G
UIDE