Check Alternator Belt Tension - Hitachi EX1900-5 Operator's Manual

15. Fill the filters with lubricating oil to prevent crankshaft
or bearing damage. Apply a light even coat of lubricat-
ing oil to the gasket sealing surface prior to installing
the filters.
16. Position element to the filter head. Tighten by hand
until the seal touches the filter head.
17. Tighten main filter cases (5) and bypass filter case (6)
one-half to three-fourths turn more using filter wrench.
Be careful not to over tighten.
18. Remove oil filler cap (2) and fill with 172 L (45.4 US
gal) oil.
19. Confirm that the oil level is between the marks H and
L on dipstick (1). Start the engine and run at slow idle
speed for about 5 minutes. Stop the engine after con-
firming that engine oil pressure is rising.
Ten to twenty minutes later, check oil level again and
add oil if necessary.
NOTE: Always allow oil to drain back to the oil pan be-
fore checking the level. This may require 15
minutes.

Check Alternator Belt Tension

--- every 250 hours
IMPORTANT: Loose alternator belt tension may result
in insufficient battery charging, engine
overheating as well as a rapid, abnormal
belt wear. Belts that are too tight, how-
ever, can damage both water pumps and
bearings.
Check belt tension by depressing the midpoint of the belt
with the thumb.
Deflection must be 10 to 15 mm (0.39 to 0.59 in.) at a de-
pressing force of approximately 98 to 147 N (10 to 15 kgf,
72 to 108 lbf). Adjust belt tension by turning buckle (7) if
necessary.
MAINTENANCE
5
7-36
6
M18C-07-014
2
1
M18C-07-013
7
M146-07-103