OM4052 Maintenance - Section 40 Lubrication and Service Page 40-9 500 HOUR LUBRICATION AND MAINTENANCE CHECKS 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. Complete the 10, 50, 100, and 250 hour lubrication and maintenance checks. Truck Serial Number Site Unit Number Date ______________________ _______________ _______________ Hourmeter Name of Service Technician _____________ ___________________________________ TASK COMMENTS CHECKED INITIALS FINAL DRIVE CASE BREATHERS - Remove the breather elements from the motorized wheels. Clean or replace the elements. HYDRAULIC SYSTEM OIL FILTERS - Replace the filter elements. Check the oil level in the hydraulic oil tank and add oil, as necessary. Use Lube Key B.
HYDRAIR® SUSPENSION - Check for the proper piston extension (front and rear). Refer to Section H4 in the service manual for more information on proper suspension extension and maintenance procedures. THROTTLE AND BRAKE PEDAL - Lubricate the trea- dle roller and hinge pins with lubricating oil. Lift the boot from the mounting plate and apply a few drops of oil between the mounting plate and plunger. Use Lube Key B. HYDRAULIC TANK BREATHER - Replace the breather. ACCUMULATOR PRE-CHARGE - Check the steering and brake system accumulator pre-charge pressures. Refer to the shop manual for details. WHEEL MOTORS - Check the armature section for wear or damage.
Refer to Motorized Wheel Mainte- nance Schedule in Section P of the shop manual. PARKING BRAKE LINING - Check the parking brake lining by: a. Apply the parking brake. b. Use a feeler gauge to measure the gap between the piston and the surface of the parking brake disc. c. If the gap is 0.76 mm (0.03 in.) or less, the parking brake lining must be replaced. To replace the parking brake lining, follow the Parking Brake Lining Replace- ment procedure in Section J of the shop manual. FRONT BRAKE DISC - Measure the thickness of the disc. If 20 to 25% of the disc wear surface is worn below 28.7 (1.13 in.), the disc must be replaced.
Refer to the shop manual, Parking Brake, Section J, for additional information. VHMS DATA DOWNLOAD - Using a laptop PC with the VHMS Technical Analysis Tool box program, per- form a data download from the VHMS controller. Send the data to WebCARE using the FTP feature. Refer to Section D in the applicable shop manual for more detailed instructions.