TABLE 5-2. OIL VISCOSITY
1
Viscosity at 100F
(37.8C)
Temp. Range
SSU
Centistokes
150
32
40F & Below (4.4C & Below)
40F to 80F (4.4C to 26.7C)
110
500
165
80F to 125F (26.7C to 51.7 C)
750
PERIODIC INSPECTION AND MAINTENANCE. Table 5-3 lists the components which
5-4.
require periodic inspection and maintenance.
ACTION
INTERVAL
COMPONENT
,
I
500 Hours
Inspect for loose or missing
Entire Unit
bolts, screws, nuts and washers.
500 Hours
Check tension and adjust as necessary.
Drive Belts
500 Hours
Inspect and clean; repair as necessary.
C o m p r e s s o r Valves
1000 Hours
Air Inlet Filter Silencer
Replace pads.
1000 Hours
Inspect for breaks, loose connections.
Tubing and Piping
1000 Hours
Clean and inspect for damaged fins
Intercooler and Aftercooler
and tubing. Replace damaged
finned tubing.
1000 Hours
Clean and inspect for damaged fins.
Cylinder Cooling Fins
Replace cylinders having damaged fins.
DRIVE BELTS. Drive belts must be properly adjusted. A belt that is too loose will
inspect the belt tension, it is necessary to remove the belt guard assembly. A quick check to
determine if belt adjustment is proper may then be made by observing the slack side of the
belt for a slight bow when the unit is in operation, as shown in Figure 5-1. Be careful to
keep hands and clothing away from moving belts when checking belt tens ion. NEVER RUN
THE UNIT WITH THE GUARD REMOVED EXCEPT TO CHECK BELT TENSION.
