Cessna 150 Series Service Manual page 24

50 HOURS (Cont)
11
NOSE GEAR SHOCK STRUT
Keep strut filled and inflate to correct pressure.
Refer to paragraph 2-26 for details.
-100
HOURS
5
SHUT-OFF VALVE DRAIN
Remove plug and drain off any water or sediment.
Also refer to paragraph 2-19.
10
FUEL STRAINER
Disassemble and clean strainer bowl and screen.
17
ENGINE OIL SYSTEM
On aircraft equipped with an external full flow oil filter change engine oil,
providing the filter element is changed at 50 hour intervals.
Change engine
oil at least every six months even though less than the recommended hours
have accumulated.
Reduce these intervals under severe operating conditions.
200 HOURS
1
VACUUM RELIEF FILTER
Change each 1000 hours, or to coincide with engine overhauls.
9
BRAKE MASTER CYLINDERS
Check fluid level and refill as required with hydraulic fluid. Refer to paragraph 2-28
for details. Landing gear brake master cylinders used prior to 1979 still require
overhaul every five years to replace rubber components. Refer to paragraphs 5-57
thru 5-61 for details.
500 HOURS
2
VACUUM SYSTEM CENTRAL AIR FILTER
Replace every 500 hours.
AS REQUIRED
8
GROUND SERVICE RECEPTACLE
Connect to 12-volt DC, negative-ground power unit.
Refer to Section 11 for
details.
Figure 2-4. Servicing (Sheet 3 of 3)
Change 1 2-11