Case WX90, Service Manual

Page: 23 / 51

SAFETY PRECAUTIONS
SR2-1-7
15501 9-35990
take place during maintenance or repair.
Move the hydraulic system lock safety lever to the lock
position when stopping the machine for whatever reason.
Always install the safety stays for the hood and other
hinged covers before performing any maintenance or
repair work in the engine compartment.
TRANSFERS AND TRANSPORTATION
Before moving or transporting the machine, block
u p p e r s t r u c t u r e s w i n g t o p r e v e n t a c c i d e n t a l
movement.
Pay particular attention during transfer on inclines,
both uphill and downhill. Keep the bucket in a position
to provide a possible anchor point into the ground in
case of slipping.
During transfers on inclines, both uphill and downhill,
keep the upperstructure aligned with the carriages.
Do not travel across the slope.
Never transfer the machine in the working site, in a
crowded area, or near people without having at least
one person charged with hand-signals who could
guide the Operator.
Sound the horn to inform that you are about to move off.
It is necessary to know load limits of bridges and
dimensional limits of tunnels. Such limits must never
be exceeded. You should also know machine height,
width, and weight. Have a signal-man help you when
clearances are limited.
C h e c k d i s t a n c e b e t w e e n b o o m / d i p p e r a n d
dimensional limits during transfer or transportation.
Rough terrain may cause the machine to sway and
roll to such an extent that boom/dipper could get to
c o n t a c t e l e c t r i c l i n e s o r o t h e r o b s t a c l e s . C r o s s
obstacles at a right angle at low speed. Pay attention
t o m a c h i n e s h a k i n g w h e n t h e c e n t r e o f g r a v i t y
overcomes the obstacle.
Keep the bucket down at all times during transfers.
Drive with the lights on and use appropriate signals
and flags.
G e t t o k n o w a n d r e s p e c t l o c a l a n d n a t i o n a l
regulations.
Consider boom/dipper and upperstructure dimensions
while turning.
Use a ramp to load the machine on a trailer. If a ramp
is not available, fabricate one using blocks. The ramp
should be sufficiently strong to support machine
weight. Always load and unload on level surface.
Tow the machine following the instructions contained
in the Operator's Manual.
ENGINE
Do not run the engine in closed buildings without proper
ventilation capable to remove harmful exhaust fumes.
Do not place head, body, limbs, feet, hands or fingers
near rotating fans or belts. Be especially careful near
blower fans.
Loosen the radiator cap very slowly to relieve system
pressure before removing it. Always top-up coolant
level with the engine off or idling if hot. See the
Operator's Manual.
K e e p t h e e x h a u s t m a n i f o l d a n d t u b e f r e e f r o m
combustible matters. Fit the machine with shields and
guards when working in the presence of combustible
matter free in the air.
Do not refuel with the engine running, especially if hot, as
this increases fire hazard in case of fuel spillage.
Never attempt to check or adjust fan belt tensions
when the engine is running.
D o n o t a d j u s t t h e f u e l i n j e c t i o n p u m p w h e n t h e
machine is operating.
Do not lubricate the machine with the engine running.
Do not run the engine with the air intakes open and
not protected. If this cannot be avoided for service
reasons, place protection meshes on all intakes
before servicing the engine.
ELECTRICAL SYSTEM
Pay attention to connect connecting cables to correct
poles (+ to +) and (- to -) at both ends. Do not short-
circuit terminals. Thoroughly follow instructions given
in the Operator's Manual.
Always move the starter switch key into the lock
position before servicing or repairing the machine.
Batteries contain SULPHURIC ACID. Protect the eyes
when working near the batteries against possible
sprays of the acid solution. Should acid contact skin,
eyes, or clothes, RINSE IMMEDIATELY IN WATER
FOR AT LEAST 15 MINUTES. Immediately seek
medical attention.
Battery released gas is highly flammable. Leave the
battery compartment cover open during recharging to
improve ventilation. Never check battery charge by placing
metal objects across the posts. Keep sparks or open
flames away from batteries. Do not smoke near the
battery to prevent explosion hazard.
Before any maintenance or repair, make sure that
t h e r e a r e n o f u e l o r e l e c t r o l y t e l e a k s f r o m t h e
batteries. If any, correct prior to proceeding with
further work. Do not recharge batteries in confined
spaces. Ensure proper ventilation is provided to avoid
accidental explosions due to build-up of explosive gas
released during charging.
Disconnect batteries before working on the electrical
system or carrying out any other type of work.
HYDRAULIC SYSTEM
Pressure fluid escaping from a very small hole can be
almost invisible and still have sufficient force to