.
MAINTENANCE
SAFETY CRITICAL PARTS
SAFETY CRITICAL PARTS
For using the machine safely for an extended period of time, you must periodically replace the safety critical and fire
prevention-related parts listed in the table of important parts.
Material quality of these parts can change as time passes and they are likely to wear out or deteriorate. However,
it is difficult to determine the extent of wear or deterioration at the time of periodic maintenance. Hence, it is required
to replace them with new ones regardless of their condition after a certain period of usage. This is important to
ensure that these parts maintain their full performance at all times.
Furthermore, should anything abnormal be found on any of these parts, replace it with a new one even if the periodic
replacement time for the part has not yet arrived.
If any of the hose clamps show deterioration like deformation or cracking, replace the clamps at the same time as
the hoses.
Also perform the following checks with hydraulic hoses which need to be replaced periodically. Tighten all loose
clamps and replace defective hoses, as required.
When replacing hoses, always replace O-rings, gaskets, and other such parts at the same time.
Have your Komatsu distributor replace the critical parts.
SAFETY CRITICAL PARTS LIST
No. Safety critical parts for periodic replacment Q'ty Replacement interval
1 Fuel hose (fuel tank - injection pump) 2
Every 2 years
or 4000 hours,
whenever comes
sooner
2 Fuel return hose (return - fuel cooler inlet port) 1
3 Fuel cooler return hose (fuel cooler outlet port - fuel tank) 1
4 Turbocharger lubricating hose 1
5 Engine oil filter hose (engine - oil filter) 2
6 Pump outlet hose (pump - control valve delivery hose) 1
7 Pump outlet hose (pump - control valve PP hose) 1
8 Pump outlet hose (pump - control valve LS hose) 1
9 Work equipment hose (boom cylinder inlet port) 4
10 Work equipment hose (bucket cylinder line - boom foot) 2
11 Work equipment hose (bucket cylinder inlet port) 2
12 Work equipment hose (arm cylinder line - boom foot) 2
13 Work equipment hose (arm cylinder inlet port) 2
14 Attachment additional line hose (boom foot) 2
15 Attachment additional line hose (boom top) 2
16 Swing line hose (swing motor inlet port) 2
17 Main suction hose 1
18 Air conditioner heater hose 2
19 Seat belt 1 Every 3 years
20 Engine high-pressure piping clamps 1set
Every 8000 hours
21 Fuel spray prevention cap 1set
4 - 13
To Next Page
Loading...
