PREVENTIVE MAINTENANCE CHECKS AND SERVICES (PMCS)
Table 1. Preventive Maintenance Checks and Services (PMCS) for 621B Scraper.
NOT FULLY MISSION
· Review all WARNINGs, CAUTIONs and NOTEs before per-
forming PMCS and operating the 621B Scraper.
· Perform all PMCS checks if:
a. You are the assigned operator but have not operated the
scraper since the last monthly checks.
b. You are operating the scraper for the first time.
· Unless otherwise indicated, perform PMCS with machine
parked on level ground, parking brake applied, transmission in
N (Neutral) and locked, bowl lowered to the ground, wheels
blocked, and engine shut down.
· If leakage is detected during performance of PMCS, further
investigation is required to determine location and cause of
Overall View a. Check under tractor for evidence of
Class III fuel, oil or hydrau-
fluid leakages such as oil, coolant,
lic fluid leaks are evident.
fuel and hydraulic fluid.
Any coolant leak is evident.
b. Check tractor for obvious damage
Damage that would impair
that would impair operation.
operation is evident.