Scheduled Maintenance Guide 3rd Printing
Page 34
...3,000 miles or 3 months, whichever occurs first, during extended trailer tow operation above 45 mph. F-450 and F-550 Axle Maintenance Replace rear axle lubricant every 100,000 miles under the Special Operating Conditions, where noted, beginning on all F-450 and F-550 commercial applications... may be changed anytime an axle has been submerged in water. The axle lubricant should be changed unless a leak is suspected, service is required or the axle assembly has been submerged in water. The axle lubricant should be changed anytime the axle and PTO have been submerged in...
...3,000 miles or 3 months, whichever occurs first, during extended trailer tow operation above 45 mph. F-450 and F-550 Axle Maintenance Replace rear axle lubricant every 100,000 miles under the Special Operating Conditions, where noted, beginning on all F-450 and F-550 commercial applications... may be changed anytime an axle has been submerged in water. The axle lubricant should be changed unless a leak is suspected, service is required or the axle assembly has been submerged in water. The axle lubricant should be changed anytime the axle and PTO have been submerged in...