Priceless Aviation Products 747B, Technical Manual And Parts List, Page: 17 / 42

Technical Manual & Parts Lists
12
Maintenance Schedule
NOTES:
1. Initial oil change is
after 5 hours of
operation. Thereafter,
change oil after every
100 hours operation.
Change more often
under dusty or dirty
conditions and during
hot weather periods.
2. Torque initially and
after first 2 hours of
operation.
3. Change engine oil
filter per the engine
manufacturer’s
recommendations.
Refer to Engine
Owner’s Manual.
REFERENCES:
a. Refer to this Owner’s
Manual
b. Refer to Engine Owner’s Manual
NOTE: After completing maintenance cycle (500 hours), repeat cycle
Torque Values
Torque values given below:
Ft.-lbs. Nm
Wheel (lug) nuts 75-80 88.14-101.7
It is recommended that these be checked after the first 2 hours of operation, initially and every 50 hours
following removal for repair or replacement.
For engine torque values, see engine owner’s manual.
WARNING
Particular attention must be given to tightening the drive wheel lug nuts
and wheel motor nuts. Failure to correctly torque these items may result
in the loss of a wheel, which can cause serious damage or personal
injury.
SERVICE AT INTERVALS INDICATED
WEEKLY OR
50 HRS MONTHLY
OR 100 HRS ANNUALLY
OR 300 HRS
Visually inspect unit (a)
Visually inspect tires (a)
Check oil level
Check fuel level (a)
Change engine oil filter
200 hours
Change engine oil and filter (a)
Check battery connection (a)
x
Replace air cleaner element x
Check the pressure with a gauge (a) x
Tighten lug nuts on wheels x
Check hydraulic fluid level (a) x
Clean engine exterior (b) x
Clean and recap spark plugs (b) x
Check fuel lines and hydraulic lines x
Change fuel filter (a) x
Change hydraulic filter and fluid x
Apply Grease To Fittings x
After first 20 hours of operation
Before each use.
Before each use.
Before each use.
Before each use.