PREVENTIVE MAINTENANCE CHECKS AND SERVICES (PMCS) - CONTINUED
Table 1. Preventive Maintenance Checks and Services (PMCS) for 621B Scraper - Continued.
NOT FULLY MISSION
0.1 Hours Differential
If engine must be left running, do not work in area of hitch link
unless cab is NOT occupied. Inadvertent steering wheel movement
will cause changes in clearances in hitch area. Serious injury or death
to personnel could result.
Check level of differential oil as fol-
a. Clean area around sight gage and
b. Perform hot check of differential oil
level with the engine idling and oil
at operating temperature. Oil level
must be at full line on sight gage.
opening. Do NOT overfill. Reinstall
OIL FILLER CAP