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ACCESSORIES
1 - 9
SNOW PLOW WIRING DIAGRAMS
Refer to Figures 6, 7 a n d 8 for w i r i n g d i a g r a m s for
the snow plow power u n i t , t h e controls a n d t h e aux-
i l i a r y l i g h t i n g .
For electric motor a n d solenoid specifications, refer
to Snow Plow Specifications c h a r t a t e n d o f t h i s
group.
SERVICE PROCEDURES
DIAGNOSIS
W h e n malfunctions a r e encountered, refer t o t h e
Snow Plow Diagnosis c h a r t a n d t h e Voltage Applica-
t i o n & H y d r a u l i c F l u i d F l o w i l l u s t r a t i o n s before dis-
assembling t h e u n i t .
SOLENOID
VALVE COIL FUNCTIONAL
TEST
Test the solenoid valve coils t o determine i f they
are functioning properly, according t o t h e f o l l o w i n g
procedure.
(1) H o l d a steel screwdriver blade approximately 1/
8 inch above t h e r e t a i n i n g n u t o n t h e coil t o be
tested.
(2) Have a helper position t h e control switch t h a t
energizes t h e applicable coil (e.g., place t h e RAISE/
L O W E R s w i t c h i n the L O W E R and F L O A T positions
to energize solenoid valve " A " coil).
CAUTION: Do not connect an ohm meter to a sole-
noid coil when voltage is applied to the coil. This
can cause internal damage to the ohmmeter.
(3) I f t h e coil has voltage applied a n d current is
flowing t h r o u g h t h e coil, t h e electromagnetic action
w i l l p u l l (attract) t h e screwdriver d o w i i to the r e t a i n -
i n g n u t . Absence o f electromagnetic attraction i n d i -
cates a m a l f u n c t i o n . A n ohmmeter or continuity
tester should t h e n be used t o determine whether t h e
coil has c o n t i n u i t y .
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