PREVENTIVE MAINTENANCE CHECKS AND SERVICES (PMCS) - CONTINUED
Table 1. Preventive Maintenance Checks and Services (PMCS) for 621B Scraper - Continued.
NOT FULLY MISSION
· To avoid injury, eye protection and acid-resistant gloves must be
worn when working around batteries. Do not smoke, use open
flame, make sparks or create other ignition sources around bat-
teries. If a battery is giving off gases, it can explode and cause
injury. Remove all jewelry such as rings, ID tags, watches, and
bracelets. If jewelry or a tool contacts a battery terminal, a direct
short will result in instant heating, damage to equipment, and
· Sulfuric acid contained in batteries can cause serious burns. If
battery corrosion or electrolyte makes contact with skin, eyes or
clothing, take immediate action to stop the corrosive burning
effects. Failure to follow these procedures may cause injury or
death or serious injury to personnel.
· Do NOT use compressed air to clean batteries. Use a clean, dry
To reduce battery damage, check battery compartment for
corrosion (greenish/white powder) and do NOT jerk or pull
on battery cables during visual inspection.
a. Access batteries inside battery com-
b. Check holddown for looseness or
Hold-down is loose or dam-
c. Inspect batteries for a cracked case
Battery case is cracked or leaks
and evidence of leaking.
If machine is equipped with original equipment maintenance-
free batteries, batteries will have no filler caps.
d. Check for damaged or missing bat- Damaged or missing filler caps
tery filler caps.
e. Check for missing, broken, split or
Damage is noted.
frayed battery cables.