Table 21 (Continued)
Check indicators. Indicators should return to zero
when engine is not running.
Check that battery has not run down and retains
Accessories and belts
Check for signs of wear.
Inspect wire integrity (no frayed or charred wires; no
Air cleaner and breather
Look for obstructions or clogs.
Be sure filters are not clogged or dirty. Change or
clean as required or at regular intervals.
Controls should move freely. Check for binding,
Look for oil and coolant leaks.
Gear oil levels
Additional O&M information for internal combustion engines is provided in
par. 2.1.4. Overhaul and tune-up type maintenance is the motor pool's responsibility.
Accessories. Accessories include belt drives, gear drives, variable speed
drives, and couplings that connect the driver to the pump.
Belt Drives. Two types of belts are used for belt drivers: V-belts and flat
belts. Maintaining proper tension and alignment of belt drives ensures long life of belts
and sheaves. Incorrect alignment causes poor operation and excessive belt wear.
Inadequate tension reduces the belt grip and causes high belt loads, snapping, and
unusual wear. Keep belts and sheaves clean and free of oil, which deteriorates belts.
Replace belts as soon as they become frayed, worn, or cracked.
Installing Belts. Before installing belts, replace worn or damaged
sheaves. Check alignment with a straight edge or string, and make the necessary
corrections to keep the pulleys in line. Loosen the belt tensioning adjustment enough