System Priming; Filter Assembly - Komatsu HD1500-7 Operation & Maintenance Manual

Section 42 - Automatic Lubrication System
42-10

SYSTEM PRIMING

The system must be full of grease and free of air pock-
ets to function properly. After maintenance, if the pri-
mary or secondary lubrication lines were replaced, it
will be necessary to prime the system to purge
entrapped air.
1. Fill the reservoir with lubricant, if necessary.
2. To purge air from the main supply line, remove
the main supply line at the reservoir and connect
an external grease supply to the line.
3. Remove plugs from each injector group in
sequence (right front, left front, and rear axle).
4. Using the external grease source, pump grease
until it reaches the injector group. Install the pipe
plug and repeat for the remaining injector groups.
5. Remove the caps from each injector. Connect an
external grease supply to the zerk on the injector.
Pump until grease reaches the far end of the indi-
vidual grease hose or the joint being greased.

Filter Assembly

Replace element (5, Figure 42-8) if bypass indicator (2)
indicates excessive element restriction.
FIGURE 42-8. FILTER ASSEMBLY
1. Housing
2. Bypass Indicator
3. O-Ring
4. Backup Ring
5. Element
04/10 OM4207
6. Spring
7. Bowl
8. O-Ring
9. Plug