OM4207 04/10 Automatic Lubrication System - Section 42 42-15 PREVENTATIVE MAINTENANCE Use the following maintenance procedures to ensure proper system operation. 3. Check the grease reservoir level. Daily Lubrication System Inspection a. Fill the reservoir as needed. Check the filter bypass indicator when filling the reservoir. Replace the element if grease is bypassing. 1. Check grease reservoir level. Inspect grease level height after each shift of operation. Grease usage should be consistent from day-to-day operations. Lack of lubricant usage would indicate an inop- erative system. Excessive usage would indicate a broken supply line. b. Check the reservoir for contaminants.
Clean, if necessary. c. Ensure all filler plugs, covers and breather vents on the reservoir are intact and free of contaminants. 2. Check filter bypass indicator when filling reservoir. Replace element if bypassing. 4. Inspect all bearing points for a bead of lubricant around the bearing seal. 3. Check all grease feed line hoses from the SL-1 injectors to the lubrication points. 5. System Checkout a. Repair or replace all damaged hoses. a. Remove all SL-1 injector cover caps to allow visual inspection of the injector cycle indicator pins during system operation. b. Ensure all air is purged and all new hoses are filled with grease before truck operation. b. Start the engine. 4.
Inspect key lubrication points for a bead of lubri- cant around the seals. If a lubrication point appears dry, troubleshoot and repair the problem. c. Actuate manual test switch (17, Figure 42-2). The hydraulic motor and grease pump should operate. NOTE: It is good practice to manually lube each bearing point at the grease fitting provided on each Injector. This will indicate if there are any frozen or plugged bearings, and will help flush the bearings of contaminants. d. With the grease pressurized, check each SL-1 injector assembly. The cycle indicator pin should be retracted inside the injector body. e. When the system reaches 17 237 kPa (2500 psi), the pump should shut off.
The pressure in the system should drop to zero, venting back to the grease reservoir. 250 Hour Inspection 1. Check all grease hoses from the SL-1 injectors to the lubrication points. See Figure 42-2. f. With the system vented, check all of the SL-1 injector indicator pins; all of the pins should be visible. Replace or repair injectors, if defective. a. Repair or replace all worn or broken hoses. b. Ensure all air is purged and all new hoses are filled with grease before truck operation. g. Reinstall all injector cover caps. h. Check controller operation. 2. Check all grease hoses from the pump to the SL- 1 injectors. NOTE: With the engine on, the lube system should activate within 5 minutes.
The system should build 13 790 to 17 237 kPa ( 2000 to 2500 psi) within 25-40 seconds. a. Repair or replace all worn or broken hoses. b. Ensure all air is purged and all new hoses are filled with grease before truck operation.