SECTION 35 - HYDRAULIC SYSTEM
35-16
AUXILIARY BOOM HYDRAULICS TROUBLESHOOTING
PROBLEM POSSIBLE CAUSES CORRECTION
Check and repair linkage
Repair or replace
Clean or replace
Check O ring and back-up washer
on plugs
Check and repair
Repair
Repair
Check and repair
Check and repair
Check and repair
Repair or replace
Check and repair
Operate at lesser loads
Check operating pressure
Clean oil cooler
Return control to neutral and lock
Adjust linkage
Check and repair
No oil flow to quick couplers
Control will not hold in detent
position
Hydraulic system overheats
when auxiliary hydraulics is in
use
Hydraulic system overheats
when auxiliary hydraulics is not
in use
Broken control linkage
Inoperative quick coupler
Plugged supply line
Control valve plugs leaking oil to re-
turn
Inoperative gear pump
Loose linkage
Misadjusted linkage
Inoperative control valve spool
(binding)
Inoperative control valve detent cap
Restriction in return line
Inoperative quick coupler
Restriction in attachment
Operating at, or close to, relief pres-
sure
Relief pressure to low
Plugged oil cooler not allowing cool-
ing air to pass through
Control handle shifted slightly
Control linkage not adjusted proper-
ly
Control valve spool binding
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