MAINTENANCE
7-15
U: First time replacement or cleaning only
Section Item for check
Operating hours
Page
10 50 100 250 500 1000 2000 4000 4500
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system
Check Hydraulic Oil Level
{
7-43
Check Bucket Teeth and Cutting Edge
{
7-99
Check Hoses and Lines
{
7-54
Greasing
*1
U
*2
U
{
7-20
Check Ride Control Accumulator
Function, Gas Leakage, Looseness, and
Damage
{
7-53
Replace Hydraulic Tank Oil Filter
{
7-49
Replace Air Breather Element
{
7-51
Replace Pilot Oil Filter
{
7-47
Check Pilot Circuit Accumulator
Function, Gas Leakage, Looseness, and
Damage
{
7-52
Check Gas pressure in Ride Control
Accumulator
{
7-53
Change Hydraulic Oil
*4
{ 7-44
Clean Suction Filter
*4
{ 7-46
Replace Pilot Circuit Accumulator Every 4000 hours or once every two years whichever
comes first.
7-53
Chassis
Check Rearview Mirror and Inside
Rearview Mirror
{
7-103
Check ROPS Cab, Resin Cab Roof, and
Roof Mounting Bolts
{
7-100
Check and Replace Seat Belt and Lower
Tether
{
Every 3 years 7-100
Clean Engine Compartment and Hood
{
7-104
Check Steps and Handrails for Damage
and Looseness
{
7-103
Check Windshield Washer Fluid Level
{
7-100
Greasing (Center Pin)
{
7-23
Electrical
system
Check Monitor Functions and All Other
Instrument Operation
{
7-79
Check Horn and Back Up Alarm
{
7-80
Check Work Lights
{
7-80
Check Electrical Harnesses and Fuses
{
7-81
Check Battery Electrolyte Level
{
7-76
Check Electrolyte Specific Gravity
{
7-78
NOTE:
*1 Add grease daily during first 50 hours of operation.
In case the machine is engaged in excavation in mud, water or snow, add grease after
each work shift.
*2 After 50 hours of operation, carry out next greasing at the first 250 hours of operation.
Then, carry out greasing every 500 hours of operation afterwards.
Shorten greasing intervals when the machine is operated under severe conditions or
when the machine is continuously operated for a long period of time.
*4 Hydraulic oil changing interval differs according to the kind of hydraulic oil used.
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