Upright TL38 - Troubleshooting Guide

Page 4-3
Troubleshooting 4.3 - Troubleshooting Guide
TL38 Service & Parts
TROUBLE PROBABLE CAUSE REMEDY
1. Blown electric motor fuse Check 160 amp electric motor fuse. R eplace if blown.
2. Faulty battery Check the voltage output of the battery charger. If less than 24 VDC,
charger.
3. F a ulty ba tte ry( ies ). Afte r c omplete ly cha rging ba tte rie s , te s t ea ch ba ttery. R epla c e a s
4. Loose or broken Check continuity of all battery and motor leads. Replace if necessary.
ba ttery lea d.
5. E mergency Stop With emergency stop switch in the ON position, check continuity
switch(es ) failed open.
6. B lown control fuse C heck 7A circuit control fuse. R eplace if blown.
1. Oil level in hydraulic C heck hydraulic fluid level, top off as required.
reservoir is low.
2. F aulty hydraulic C heck press ure and delivery of the hydraulic pump. R eplace if
pump.
1. E mergency Close emergency
Lowering valve down valve.
open.
2. P latform Observe maximum load rating. (see Operation section of this manual)
overloaded.
3. F aulty controller at C heck functionality of controller. R eplace if faulty.
upper controls.
4. B lown control fuse C heck 7A circuit contrrol fuse. R eplace if blown.
5. B attery level low. C heck B attery V oltage. C harge if necessary.
C heck for fault code 68
6. Outrigger limit E ns ure all four outriggers are deployed and the
switches not activated limit switch contacts are closed.
Replace switch.
1. E mergency E nsure that emergency lowering valve is completely clos ed. R eplace
lowering valve
open.
2. Leaking piston Check for leakage at cylinder return line, replace seals if necessary.
seals in lift
cylinders
O utrigger B oom re s t limit s witch is not activa ted or E ns ure booms a re s towe d. C heck tha t N orma lly O pe n conta cts of limit
C heck that Normally C los ed contacts of limit s witch are closed when
Adjust switch lever arm or R eplace switch.
J ib cylinder will not
re tra c t or exte nd.
All functions
inoperable,
electric motor
does not s ta rt.
All functions
inoperable.
E lectric motor
starts when
control is
actuated.
P latform will not
elevate or
elevates slowly.
C lose S hutoff ball valve.
B ooms drift down
after being
elevated
Machine will not
slew when booms
F aulty s lew cut-out limit switch
S hutoff ball valve is open.
4.3 TROUBLESHOOTING GUIDE