Komatsu Galeo PC800LC-8, Operation & Maintenance Manual

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SAFETY CRITICAL PARTS
MAINTENANCE
4-16
SAFETY CRITICAL PARTS 4
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 impor-
tant 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 peri-
odic 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 4
NO. Safety critical parts for periodic replacement Q'ty Replacement interval
1 Fuel hose(fuel tank to Fuel Cutoff ValveÅj 1
Every 2 years or 4000 hours,
whichever comes sooner
2 Fuel hose(Fuel Cutoff Valve to fuel pre-filter) 1
3 Fuel hose(fuel pre-filter to Fuel Cutoff ValveÅj 1
4 Fuel hose(Fuel Cutoff Valve to priming pump) 1
5 Fuel return hose (injection pump to fuel cooler) 1
6 Fuel return hose (fuel cooler to fuel tank) 1
7 Fuel drain hose 1
8 Heater hose (heater to engine) 2
9 Fuel spill hose (engine to fuel tank) 1
10 Fan pump outlet hose 1
11 Accumulator (for control circuit) 2
12 Water separator (case, O-ring, plug) 1
13 Front pump outlet hose 2
14 Rear pump outlet hose 2
15 Pump branch hose 2
16 Swing hose 4
17 Suction hose 4
18 Boom cylinder line hose (B/H) 4
19 Arm cylinder line hose (B/H) 6
20 Bucket cylinder line hose (B/H) 4
21 Boom cylinder line hose (L/S) 4
22 Arm cylinder line hose (L/S) 2
23 Bucket cylinder line hose (L/S) 6
24 Bottom dump cylinder line hose (L/S) 10
25 High-pressure piping clamp 15
Every 8000 hours
26 Missing fuel spray prevention cap 16
27 Seat belt 1 Every 3 years