Komatsu D155A-6 Operation & Maintenance Manual page 254

MAINTENANCE
NO. Safety critical parts for periodic replacement
21 Hose between PPC divider block and work equipment lock valve
22 Hose between the oil cooler bypass valve and hydraulic oil cooler
23 Hose between self pressure reducing valve and drain relay block
24 Hose between main control valve and drain relay block
25 Hose between fan motor and hydraulic tank
Hose between self pressure reducing valve and work equipment lock
26
valve block
27 Hose between work equipment lock valve block and main control valve
28 Hose between main control valve and hydraulic tank
29 Hose between hydraulic pump and main control valve
Hose between main control valve and ripper relay block (fixed
30
multi-shank ripper)
Hose between main control valve and ripper relay block (variable
31
multi-shank ripper)
32 Hose between oil cooler bypass valve and hydraulic tank
Hose between ripper relay block and ripper cylinder (fixed multi-shank
33
ripper)
Hose between ripper relay block and ripper cylinder (variable
34
multi-shank ripper)
35 Hose between main control valve and blade tilt relay cover
36 Hose between main control valve and blade relay tube
37 Hose between drain relay block and hydraulic tank
38 Hose between radiator guard top and lift cylinder
39 Hose between fan pump and drain relay block
40 Hose between accumulator and work equipment lock valve
41 Hose between hydraulic pump and hydraulic pump
42 Accumulator (for control circuit)
43 Seat belt
44 High-pressure piping clamps
44 Fuel spray prevention cap
PERIODIC REPLACEMENT OF SAFETY CRITICAL PARTS
Q'ty Replacement interval
2
2
1
1
4
1
2
1
2
2
Every 2 years or 4000
4
1
2
4
4
2
1
4
1
2
1
1
1
1S
1S
hours, whichever
comes sooner
Every 3 years
Every 8000 hours
4 - 17