Operating instructions

8-18
TABLE XVII. STANDARD ACCEPTANCE TEST FOR IO-520, 285 H.P. ENGINE
PROPELLER STAND
Note: Engine oil pressure must be supplied to propeller transfer collar during all testing.
Period Time – Minutes RPM
1
2
3
4
5
6
7
5
5
10
15
10
10
5
1200
1600
2450
Rated RPM (adjust engine – fuel flow,
pr., ect.,) (Reduce RPM for
adjustments).
Engine Parameter checks (fuel inj., Oil
pr., temp. etc., - see applicable data)
2100 mag check (3.(b)).
2450
Idle RPM (cooling period - 300° max.
60 Total Minutes
Inspect engine and apply corrosion prevention treatment in accordance with TCM Service Bulletin M74-9.
START OIL CONSUMPTION DETERMINATION
Period Time – Minutes RPM
1 5 1200
2 5 1600
3 10 2450
415
Rated RPM (adjust engine – fuel flow,
pr., ect.,) (Reduce RPM for
adjustments).
5 10 Engine Parameter checks (fuel inj., Oil
pr., temp. etc., - see applicable data).
2100 mag check (3.(b)).
65
Idle RPM (cooling period - 300°
Max. C.H.T. before shut-down).
Stop engine, drain oil, weigh oil in for oil consumption determination.
7 5 Warm up to rated RPM (minimum
1200 RPM).
8 30 2450 (3.(c)).
95
600 Idle (cooling period - 300° Max.
C.H.T. before shut-down).
80 Total Minutes
Stop engine, drain and weigh oil and record. (3. (d)). Inspect engine and apply corrosion prevention
treatment in accordance with TCM Service Bulletin M74-9.