Komatsu HM400-1, Руководство пользователя

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MAINTENANCE
PERIODIC REPLACEMENT OF SAFETY CRITICAL PARTS
PERIODIC REPLACEMENT OF SAFETY CRITICAL PARTS
To ensure safety at all times when operating or driving the machine, the user of the machine must always carry out
periodic maintenance. In addition, to further improve safety, the parts in the safety-critical parts list on the next page
must also be replaced at the specified interval. These parts are particularly closely connected to safety and fire
prevention, so please contact your Komatsu distributor to have them replaced.
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.
SAFETY CRITICAL PARTS
No. Safety critical parts for periodic replacement Replacement interval Remarks
1 Fuel hose (fuel tank - injection pump)
Every 4000 hours
or 2 years,
whichever
comes sooner
2 Fuel hose (injection pump - fuel tank)
3 Spill hose (engine output connector - fuel tank)
4 Water separator (case, O-ring, plug)
5 Rubber hose for brake piping
6
High-pressure hose in steering oil pressure circuit
(pump
←→
demand valve
←→
steering valve
←→
steering cylinder)
7
High-pressure hose in hoist circuit
(pump
←→
demand valve
←→
hoist valve
←→
hoist cylinder)
8 Hose at discharge side of retarder cooling pump
9 Hose at discharge side of transmission pump
10
High-pressure hose in brake control circuit
(pump
←→
accumulator charge valve
←→
accumulator)
Every 2000 hours
or 1 year,
whichever
comes sooner
11 Brake valve parts
Replace as
service kit
12 Parking brake valve parts
13 Accumulator charge valve parts
14 Retarder control valve parts
15 Parking brake chamber parts
16 Slack adjuster parts
17 Seat belt Every 3 years Replace
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