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08 February 2019

24-30-00

Initial Issue

Page 6 of 21

Copyright - BRP-Rotax GmbH & CO KG. All rights reserved.

SI-PAC-001

SERVICE INSTRUCTION - 

PAC

3.1.3) Requirements for correct operation of the integrated rectifier regulator

Fuse

The rectifier regulator must be protected by a slow blowing fuse or circuit breaker. Fuse or circuit 
breaker rating must be determined by load, wire size and length.

Load distrubu-
tion

Due to slightly different output voltages of the regulators (alternator and regulator A/B of fuse box) 
the power is drawn by the generator with the higher output voltage at low load.

Amperage

See 

Fig. 2

.

-

Ambient temperature: 20 °C (68 °F)

-

Voltage: constant 13.5 V

-

Tolerance: max. 

± 5 %

NOTE:

The speed of the external alternator is 1.18 times the crankshaft speed or 3 times the
propeller speed.

Fig. 2

m

WARNUNG

NOTICE

The current over engine speed graph was determined and is only effective 
under the following conditions.

1/min. /

 rpm.

2000

3000

4000

5000

6000

7000

8000

n Generator

rpm. alternator

(A)

10

20

30

40

50

1000

1500

2000

2500

n Propeller

rpm. propeller

00547

Summary of Contents for 24-30-00

Page 1: ...latest issue of the relevant Illustrated Parts Catalog 1 2 Concurrent ASB SB SI and SL None 1 3 Reason An external alternator is not included in the scope of delivery for 915 i Series aircraft engines...

Page 2: ...rrent issue of Illustrated Parts Catalog IPC Maintenance Manual Line MML Maintenance Manual Heavy MMH NOTE The status of the Manuals can be determined by checking the table of amendments The 1st colum...

Page 3: ...Company support information Any possible support by BRP Rotax will be provided on request by ROTAX Authorized Dis tributors or their independent Service Centers 2 3 Material requirement and credit per...

Page 4: ...ir independent Service Centers Persons approved by the respective Aviation Authority Persons with approved qualifications for the corresponding engine types Only authorized per sons iRMT Level Heavy M...

Page 5: ...t temp Ambient temperature range Weight Weight 3 0 kg 6 61 lbs 3 1 2 Connections See Fig 1 Power supply wires Power supply wires to external alternator 1 have to be installed depending on the mounting...

Page 6: ...different output voltages of the regulators alternator and regulator A B of fuse box the power is drawn by the generator with the higher output voltage at low load Amperage See Fig 2 Ambient temperat...

Page 7: ...itch momentary 1 2 3 4 AWG 12 AWG 12 AWG 12 A AWG 04 AWG 12 X3 M Start Relais E Starter AWG 12 AWG 12 V 912 iS wiring harness Airframe Ground EMS ground AWG 04 21 1 mm AWG 12 3 3 mm AWG 16 1 50 mm AWG...

Page 8: ...nts such as switches protection devices etc that are not included in the scope of engine delivery is purely symbolic It does not constitute a specification of the version and shall therefore only be s...

Page 9: ...ension Inspect V belt tension as per drawing below Fig 4 3 3 2 Adjust the V belt tension Belt tension To adjust the belt tension Fig 5 Step Procedure 1 Loosen the hex screw M10 1 and the 2 Allen screw...

Page 10: ...f damage to engine There is a risk of short circuits and cable fires during work on the electric system All installation work on the electric system should be carried out with the engine switched OFF...

Page 11: ...reserved Fig 7 Fig 8 Step Procedure 3 Loosen hex screw M10x45 and remove the alternator and thrust washer Step Procedure 4 Loosen Allen screws M8x20 along with lock washers and remove the alternator...

Page 12: ...5 Remove 2 Allen screws M6x50 along with lock washers and washers from the gear box housing and alternator support assy 1 Alternator bracket assy 2 Lock washer VHZ 8 3 Allen screw M8x20 1 Alternator s...

Page 13: ...the centring exactly on the inner side of the propeller flange Step Procedure 2 Insert both pulley carriers with the centring towards the inner side of the propeller flange 3 Push the V belt pulley on...

Page 14: ...13 Fig 13 Fig 14 Step Procedure 1 Fix the alternator support finger tight by means of 2 Allen screws M6x50 and lock washers Step Procedure 2 Attach the alternator bracket finger tight to the gearbox...

Page 15: ...rnator into the lug of the alternato bracket and fix initially finger tight with hex screws M10x45 and thrust washer 10 1 20 0 5 Step Procedure 4 Tighten the pre mounted Allen screws M6 and M8 Tighten...

Page 16: ...section 3 3 2 Adjust the V belt tension Step Procedure 6 Attach the tension bar finger tight to the alternator bracket using 2 hex screws M8x20 with a lock washer and a washer Step Procedure 7 Adjust...

Page 17: ...OPTION A Connection to main switch at battery See Fig 18 Fig 18 Step OPTION A Procedure 1 Connect alternator terminal B to the main switch at the battery with a flexible multi strand wire with proper...

Page 18: ...g on the plas tic tab and pulling the connectors apart Step OPTION B Procedure 2 Insert DEUTSCH dummy plug 1 into open connector on rectifier regulator and DEUTSCH dummy plug into the open Generator B...

Page 19: ...s IG and L into the circuit in accordance with the wiring diagram Fig 3 using connectors and housing provided 6 Using a multimeter 1 check for continuity between the ground connections regula tor A 2...

Page 20: ...ution of the Service Instruction PAC must be confirmed in the logbook A revision bar outside of the page margin indicates a change to text or graphic Translation into other languages might be performe...

Page 21: ...e same or similar function Exploded views are not technical drawings and are for reference only For specific detail refer to the current documents of the respective engine type 1 V belt pulley 2 V bel...

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