Troy-Bilt 14066 - Manual (Page 36)

THOUBLE SHOOTiHG
PROBLEM POSSIBLE CAUSE CORRECTION
Loader Drops with Con­
trol Valve Spool in
“Centered” Position (No
external oil leakage
evident.)
Note: A gradual drop
over an extended period
is a normal condition.
Cylinder Piston Assembly
Leakage.
Control Valve Internal
Leakage
ChecK Cylinders for leakage
as described under Cylinder
Leakage Tests
Reolace Control Valve and
r s c ' s c k .
Control Vaive Spooi(s)
Will Not Return
(Position) to “Centered”
Position
Control Lever/Linkage
Binding.
Control Valve Spool
Centering Spring broken.
Determine origin of binding
and repair.
Replace Centering Spring.
Refer to Vaive Service pro­
cedure.
External Hydraulic Fluid
Leakage
Control Valve Spool binding
in Vaive Body Spool bore.
Loose hydraulic connection.
Defective hydraulic hose,
tubeiine, adaptor fitting or
adaptor fitting O ring.
Control Valve 0 rings
defective.
Disassemble valve for inspec­
tion and repair. Refer to
Valve Service procedure.
Tighten loose connection.
Check for origin of oil leak
and replace defective part.
Replace defective O rings.
Control Valve Spool or Body
damaged/or worn.
Cylinder Rod Packing Set
leakage.
Replace Control Valve.
Perform Cylinder Leakage
Test for Rod Packing Set
as described under Cylinder
Leakage Tests.
Loader Boom Drops Too
Fast (when Control
Lever positioned to
down)
Note: Control Lever
should be “Feathered”
when lowering loader
boom with loaded
bucket to control drop
rate. Orifice Plate missing, in­
stalled upside down, or
orifice hole size is in­
correct. Check Orifice Plate for
correct installation etc.
100-4