The optional cooling system parts may be declared as part of the cooling system on aircraft-side and so might not be a part of the Engine Type Design. Such a PAC part has been then tested and released by BRP-Rotax, but it might not be certified for the relevant engine type. In such a case the correct function in conjunction with the entire system is the responsibility of the aircraft manufacturer and must be carried out jointly with the aircraft.
Concurrent ASB/SB/SI and SL
In addition to this Service Instruction - PAC the following Service documents must be observed and complied with:
- in general all relevant Alert Service Bulletins (ASB), Service Bulletins (SB), Service Instructions (SI), Service Letters (SL), Service Instruction - Parts and Accessories (SI-PAC)
- Service Instruction SI-912-020 / 914-022, title “Running modifications on ROTAX Engine Type 912/914 (Series)”, current issue
Interchangeability of parts
All replacement parts within the same size are interchangeable without limitation with the current equivalent part of the same size. See also the requirements for installation and maintenance in Chapter 3.
Material Information
2.1) Material- cost and availability
Price and availability will be provided on request by ROTAX® Authorized Distributors or their independent Service Centers.
2.2) Company support information
- Any possible support by BRP-Rotax will be provided on request by ROTAX® Authorized Distributors or their independent Service Centers
2.3) Material requirement per engine
| Pos. no. | Part no. | Description | Application |
| A | 922666 | Expansion tank assy. | As delivered with 912 and 914 (Series) |
| 922072 | Radiator cap 1.2 bar (17.4 psi) | ||
| - | Expansion tank | Only available as assy. | |
| 860828 | Rubber plate | ||
| B | 922668 | Expansion tank assy. | As delivered with 912 i and 915 i (Series) |
| 922072 | Radiator cap 1.2 bar (17.4 psi) | ||
| - | Expansion tank | Only available as assy. | |
| 860828 | Rubber plate | ||
| C | 622052 | Expansion tank assy. 90° | Necessary when water distributor assy. is used |
| 922072 | Radiator cap 1.2 bar (17.4 psi) | ||
| - | Expansion tank 90° | Only available as assy. | |
| D | 622053 | Expansion tank assy. 180° | Necessary if water distributor assy. is used |
| 922072 | Radiator cap 1.2 bar (17.4 psi) | ||
| - | Expansion tank 180° | Only available as assy. | |
| 922265 | Water distributer assy. same angles as part no. 922666 | For radiator installation at engine types 912, 914 (Series) | |
| 922582 | Water distributor assy. same angles as part no. 922668 | For radiator installation at engine types 912 i, 915 i (Series) |
Test run
In case of uninstalled engines test run can be skipped as this is covered by the mandatory test run after installation. Conduct test run and perform leakage check. See Chapter 12-20-00 of the latest Maintenance Manual Line (MML) for the respective engine type.