Maintenance - Section 4 Rotary Pump OM4026.2 4/00 Page 4-26 Automatic Lubrication System Preventative Maintenance Procedures The following maintenance procedures should be used to insure proper system operation. c. Check that all filler plugs, covers and breather vents on the reservoir are intact and free of contaminants. Daily Lubrication System Inspection 4. Inspect all bearing points for a bead of lubricant around the bearing seal. 1. Check grease reservoir level. Inspect grease level height after each shift of operation. Grease usage should be consistent from day-to-day operations. It is good practice to manually lube each bearing point at the grease fitting provided on each Injec- tor.
This will indicate if there are any frozen or plugged bearings, and will help flush the bearings of contaminants. Lack of lubricant usage would indicate an inop- erative system. Excessive usage would indicate a broken supply line. 5. System Checkout 2. Check filter bypass indicator when filling reservoir. Replace element if bypassing. a. Remove all SL-1 injector cover caps to allow visual inspection of the injector cycle indicator pins during system operation. 3. Check all grease feed line hoses from the SL-1 Injectors to the lubrication points. b. Start truck engine. a. Repair or replace all damaged feed line hoses. c. Actuate the Lube System Test Switch.
The hydraulic motor and grease pump should op- erate. b. Make sure that all air is purged and all new feed line hoses are filled with grease before sending the truck back into service. d. With the grease under pressure, check each SL-1 injector assembly. The cycle indicator pin should be retracted inside the injector body. 4. Inspect key lubrication points for a bead of lubri- cant around seal. If a lubrication point appears dry, troubleshoot and repair problem. e. When the system attains 2500 psi (17 237 kPa), the pump should shut off and the pres- sure in the system should drop to zero, venting back to the grease reservoir. 250 Hour Inspection 1.
Check all grease feed line hoses from the SL-1 Injectors to the lubrication points (see, Figure 4-3). 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 / broken feed line hoses. g. Reinstall all injector cover caps. b. Make sure that all air is purged and all new feed line hoses are filled with grease before sending the truck back into service. h. Check timer operation. Note: With engine running, lube system should acti- vate within 5 minutes. The system should build 2000 to 2500 psi within 25-40 seconds. 2.
Check all grease supply line hoses from the pump to the SL-1 injectors. a. Repair or replace all worn / broken supply lines. i. If the system is working properly, the truck is ready for operation. b. Make sure that all air is purged and all new supply line hoses are filled with grease before sending the truck back into service. j. If the system is malfunctioning, refer to the troubleshooting chart. 3. Check grease reservoir level. a. Fill reservoir if low. 1000 Hour Inspection b. Check reservoir for contaminants. Clean, if required. 1. Check pump housing oil level and correct if nec- essary.