Case 721G Stage IV, Operator'S Manual

Page: 239 / 522

7 - MAINTENANCE
7 - MAINTENANCE ###_7_###
General information
Servicing
WARNING
Improper operation or service of this machine can result in an accident.
Read and understand the SAFETY INFORMATION Section before you perform any maintenance, ser-
vice, or repairs. Read and understand the specific service procedures for the components you plan
to work with before you start servicing the machine.
Failure to comply could result in death or serious injury.
W0138A
WARNING
Personal Protective Equipment (PPE) required.
When assembling, operating, or servicing the machine, wear protective clothing and PPE necessary
for the particular procedure. Some PPE that may be necessary includes protective shoes, eye and/or
face protection, hard hat, heavy gloves, filter mask, and hearing protection.
Failure to comply could result in death or serious injury.
W0353A
CAUTION
Burn hazard!
Wait for all components to cool before performing any operation.
Failure to comply could result in minor or moderate injury.
C0053A
NOTICE: clearly mark the connectors before unplugging.
Clean the pipes and the connectors before the disassem-
bly.
Presence of
DEF/A
D
B
LUE
® crystallization on the pipe or
on the cover of the filter is not allowed.
Remove
DEF/A
D
B
LUE
® crystallization with water and a
brush.
Usage of hammer or pincers are not allowed for the dis-
assembly of the connector.
Follow the maintenance intervals by checking the hour
meter every day. Before starting maintenance, park the
machine on flat, firm ground, away from any obstacles,
with the bucket/attachment on the ground. Keep all unau-
thorized personnel clear of the area. Unless otherwise
specified, carry out all maintenance operations with:
• the engine stopped
• the machine parked on a firm, level surface
• the transport/service link locked into position to stop the
machine from unexpected articulation
• the parking brake engaged
• the key removed from the key switch
• a "DO NOT OPERATE" tag on the key switch
• wheel chocks blocking the wheels
• all circuits cooled down prior to starting work
• all hydraulic pressure released in lift arm and bucket/
attachment circuits
• any accumulator pressure released for the appropriate
circuit
Clean the grease fittings before lubrication. Clean around
plugs and filler holes before adding fluid. Dust or dirt must
not enter the components or the circuits. Wear suitable
clothing and remember to use the necessary safety equip-
ment.
When performing service work on the machine, place a
“DO NOT OPERATE” tag on the instrument panel or the
key switch. Turn off the engine and remove the key before
leaving the operator's compartment.
Any modification to this machine without prior authoriza-
tion could cause serious injury. Do not make any modifi-
cations without authorization. Consult your dealer.
The service intervals in this chapter refer to normal op-
erating conditions. During the first operation period of a
new machine (100 initial hours) or rebuilt component and
under particularly severe conditions, carry out the service
intervals more frequently.
NOTICE: take particular care to replace all filters regu-
larly. Clean filters mean longer engine running life.
NOTICE: oils and fluids must be disposed of properly.
7-1