OPERATORS MANUAL SUPPLEMENT
No. 3219
This Supplement Voids OMS 2991 and OMS 3205.
SUBJECT: Service Interval for Main Hydraulic System.
Applicable to: All models of tractor shovels and dozers.
F i r s t filter change for all new machines: Replace the filter assem-
b l y after the first 50 Hours of operation.
Service Interval for Machines with 15 Micron Filter Assemblies:
Replace filter assembly every 250 hours. Drain,
clean and refill the main hydraulic system every
1000 operating hours.
S e r v i c e Interval for Machines with 10 Micron filter Assemblies:
Replace filter assembly every 500 hours. Drain,
clean and refill the main hydraulic system every
2000 operating hours.*
*NOTE: The oil change interval may be more than 2000 operating
hours if indicated by analysis of a regular oil sampling program
conducted by a reputable oil company or an independent labora-
tory.