M A E D A Mini-Crawler Crane Section 5 – TROUBLESHOOTING
3/2019 MC305C-3 5-81
TROUBLESHOOTING
General
• Make sure that you contact us or our sales service agency for the actions indicated in parentheses in
the Actions field.
• Contact our sales service agency if you suspect other abnormality or causes than those given below.
Machine Body
Crane cannot operate but can
travel
• Work selector switch not at
"Crane"
• Operate the work selector
switch to "Crane"
• Travelling speed, boom and hook
block operation speed too slow
• Abnormal noise from pump
• Insufficient hydraulic oil
• Hydraulic oil tank strainer
and element clogged
• See "Check / Add Hydraulic
Oil" on page 5-30 and refill with
hydraulic oil to the specified oil
level
• See "Periodic Maintenance
Procedure" on page 5-37, and
clean or replace the filter
Hydraulic oil temperature too high
• Insufficient hydraulic oil
• Between cooling fins
clogged
• See "Check / Add Hydraulic
Oil" on page 5-31 and refill with
hydraulic oil to the specified oil
level
• Clean
• Rubber tracks coming off
• Abnormal wear on the sprockets
• Rubber tracks too loose
• See "Check / Adjust Rubber
Track Tension" on page 5-64
and adjust the tension
Outriggers cannot operate
• Outrigger rotary not rotated
to extension position
(outward).
• Work selector switch not at
"Outrigger"
• Secure the rotary at the
extension position
• Operate the work selector
switch to "Outrigger"
Crane and outriggers cannot
operate
• Work selector switch at
"Drive"
• Operate the work selector
switch to "Outrigger" or
"Crane"
To Next Page
Loading...
