.
MAINTENANCE
PERIODIC REPLACEMENT OF SAFETY CRITICAL PARTS
PERIODIC REPLACEMENT OF 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.
No. Safety critical parts for periodic replacement Q'ty Replacement interval
1 Fuel hose (fuel tank - water separator) 1
Every 2 years or
every 4000 hours
2 Fuel hose (water separator - priming pump) 1
3 Fuel return hose (injection pump - fuel tank) 1
4 Fuel spill hose (injector - injector) 5
5 Fuel spill hose (unit injector - fuel tank) 1
6 Steering hose (pump - steering valve) 1
7 Steering hose (steering valve - steering cylinder) 4
8 Steering hose (steering valve - hydraulic tank) 2
9 Brake hose (pump - accumulator charge valve) 2
10 Brake hose (accumulator charge valve - check valve) 1
11 Brake hose (check valve - tandem valve) 2
12 Brake hose (check valve - single valve) 1
13 Brake hose (check valve - accumulator P.P port) 1
14 Brake hose (tandem valve - front brake) 2
15 Brake hose (tandem valve - rear brake) 2
16 Brake hose (single valve - tandem valve) 1
17 Brake hose (tandem valve - drain block) 1
18 Brake hose (single valve - drain block) 1
19 Brake hose (drain block - hydraulic tank) 1
20
Brake hose (brake accumulator - reduction valve for emergency parking
brake cancel)
1
21
Brake hose (transmission valve - reduction valve for emergency parking
brake cancel)
1
22 Brake hose (charge valve drain - hydraulic tank) 1
23 Accumulator (For PPC) 1
24 Alarm 2
25 Seat belt 1 Every 3 years
4 - 13
To Next Page
Loading...
Need help?
General
