OM4033.1 Maintenance - Section 4 Lubrication & Service Page 4-9 6. COOLING SYSTEM - a. Check cooling system for proper coolant mixture. Add coolant mixture as required. b. COOLANT FILTERS - Change coolant fil- ters. Refer to engine manufacturer's mainte- nance manual for coolant filter replacement instructions and proper coolant mixture instructions. 7. STEERING LINKAGE - Check torque on pin retaining nuts (steering linkage), 525 ft. lbs. (712 N.m) torque. Check torque on tie rod clamp retaining capscrews, 310 ft. lbs. (420 N.m) torque. Inspect all lube points to be certain all are receiving adequate grease. Look for bro- ken lines, or signs of inoperative injectors. 8.
CAB AIR FILTER (NOT SHOWN) - Under nor- mal operating conditins, clean every 250 hours. In extremely dusty conditions, service as fre- quently as required. Clean filter element with mild soap and water, rinse completely clean and air dry with maximum of 40 psi (275 kPa). Rein- stall filter. 9. HYDRAULIC SYSTEM FILTERS - Replace filter elements only after the initial 250 hours of oper- ation; then at each 500 hours of operation thereafter. Check oil level. Add oil as necessary. Lube Key “B”. 10. MOTORIZED WHEEL GEAR CASE - Refer to the G.E. Planned Maintenance Manual and specific motorized wheel shop manual. Check for correct oil level. Lube key “C”. 11.
WHEEL MOTOR BLOWER - Grease motor blower shaft bearings. Lube key “D”. 12. G.E. PREFILTER BLOWER - Add one to two applications of grease to the grease fitting. Lube key “D”. 13. BATTERIES (NOT SHOWN) - Check electrolyte level and add water if necessary. 14. BODY-UP SWITCH (NOT SHOWN) - Clean sensing area of any dirt accumulation. * These checks are required only after the first 250 hours of operation (such as: the commissioning of a new truck, or after a new or rebuilt component installation), check: COMMENTS CHECKED INITIALS