Komatsu — 500 HOUR LUBRICATION AND MAINTENANCE CHECKS

Maintenance - Section 4 OM4012.1 03/01 Page 4-10 Lubrication & Service 500 HOUR LUBRICATION AND MAINTENANCE CHECKS Maintenance requirements for every 10, 50, & 250 hour Lubrication and Maintenance Checks should also be carried out at this time. NOTE: “Lube Key” references are to the Lubrication Specification Chart. 1. FUEL FILTERS - Change the Primary Fuel Filter (Fuel Separator). Refer to the shop manual, Section “C” for servicing instructions for the fuel filter elements. 2. FINAL DRIVE CASE BREATHERS - Remove breather elements for motorized wheels and clean or replace elements. 3. HYDRAULIC SYSTEM FILTERS - Replace tank breathers and high pressure filter elements. Check oil level.

Add oil as necessary. Lube Key “B”. 4. HYDRAIR ® SUSPENSION - Check for proper pis- ton extension (front and rear). 5. THROTTLE AND BRAKE PEDAL (NOT SHOWN) - Lubricate treadle roller and hinge pins with lubri- cating oil. Lift boot from mounting plate and apply a few drops of lubricating oil between mounting plate and plunger. 6. HOIST LIMIT SWITCH (NOT SHOWN) - Check operation. Clean and adjust as necessary. 7. HOIST ACTUATOR LINKAGE (NOT SHOWN) - Check operation. Clean, lubricate, and adjust as necessary. 8. PARKING BRAKE (NOT SHOWN) - Refer to the Shop Manual, Section "J", PARKING BRAKE (J07), MAINTENANCE, and perform the Inspection recommended.

Truck Serial Number ___________________________ Site Unit Number ______________________________ Date: Hour Meter ______________ _________________ Name of Service person _________________________ COMMENTS √’d INITIALS