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HIGHWAY EQUIPMENT COMPANY
36
97373-A
Page Rev. A
LUBRICATION & MAINTENANCE
PREVENTATIVE MAINTENANCE PAYS!
The handling and spreading of commercial fertilizers is a most severe operation with respect to metal
corrosion. Unless a frequent, periodic preventative maintenance program is established, rapid damage to
spreading equipment can occur. Proper cleaning, lubrication and maintenance will give you longer life, more
satisfactory service and more economical use of your equipment.
HYDRAULIC SYSTEM
Proper oil in the hydraulic system is one of the most important factors for satisfactory operation. Utmost
cleanliness in handling the oil cannot be stressed enough. Keep hydraulic oil in original closed containers,
clean top of container before opening and pouring, and handle in extremely clean measures and funnels.
Refer to “Lubricant and Hydraulic Oil Specifications” section of the manual for selection of the proper
hydraulic fluid for use in the hydraulic system.
Service Schedule
1. Check hydraulic oil daily by means of sight gauge on reservoir. Add oil if required. Periodically inspect
hoses and fittings for leaks.
2. Change hydraulic oil filter after first week (or not more than 50 hours) of operation on a unit.
3. After first filter change, replace filter when indicator reaches Red Zone.
4. Drain reservoir through drain plug (not through suction outlet), flush, and refill and change filter element
annually. Oil and filter should also be changed whenever oil shows any signs of breaking down under
continued high-pressure operation. Discoloration of oil is one sign of breakdown.
WARNING
DO NOT check leaks with hands while system is operating as high pressure
leaks are very dangerous! DO NOT check for leaks adjacent to moving parts
while system is operating as there may be danger of entanglement!
WARNING
Shut off all power and allow all moving parts to come to rest before
performing any maintenance operation.