Lycoming - Oil Pressure Relief Valve - 77808
Genuine OEM Parts
Description: Oil Pressure Relief Valve
Part Number: 77808
FAA PMA Part Numbers:
- Superior Air Parts Inc P/N - SL77808 [Click Here]
- Continental Aerospace Technologies Inc P/N - AEL77808 [Click Here]
- Airmotive Engineering Corp P/N - AEL77808 [Click Here]
Product Overview
This valve allows excess oil flow generated by the engine oil pump to return to the sump. The oil pump must be able to generate sufficient pressure at engine idle speeds to keep all bearings supplied with oil. This can mean that at high engine speeds, the pump is capable of producing more pressure than is required, and more pressure than the lubrication system and seals can deal with. In this event, the pressure relief valve can open and allow excess oil to run directly back to the sump.
Fits For Lycoming Engine Models
| • O-235 | (-C1, -C1B, -C1C, -C2A, -C2B, -C2C, -E1, -E1B, -E2A, -E2B, -F1, -F1B, -F2A, -F2B, -G1, -G1B, -G2A, -G2B, -H2C, -J2A, -J2B, -K2A, -K2B, -K2C, -L2A, -L2C, -M1, -M2C, -M3C, -N2A, -N2C, -P1, -P2A, -P2C, -P3C) | |
| • O-290 | (-11, -D, -D2, -D2A, -D2B, -D2C) | |
| • O-320 | (-no suffix, -A1A, -A1B, -A2A, -A2B, -A2C, -A2D, -A3A, -A3B, -A3C, -B1A, -B1B, -B2A, -B2B, -B2C, -B2D, -B3A, -B3B, -B3C, -C1A, -C1B, -C2A, -C2B, -C2C, -C3A, -C3B, -C3C, -D1A, -D1B, -D1C, -D1D, -D1F, -D2A, -D2B, -D2C, -D2F, -D2G, -D2H, -D2J, -D3G, -E1A, -E1B, -E1C, -E1F, -E1J, -E2A, -E2B, -E2C, -E2D, -E2F, -E2G, -E2H, -E3D, -E3H, -H1AD, -H1BD, -H2AD, -H2BD, -H3AD, -H3BD) | |
| • IO-320 | (-A1A, -A2A, -B1A, -B1B, -B1C, -B1D, -B1E, -B2A, -CIA, -C1B, -D1A, -D1B, -D1C, -E1A, -E1B, -E2A, -E2B, -F1A) | |
| • AIO-320 | (-A1A, -A1B, -A2A, -A2B, -B1B, -C1B) | |
| • LIO-320 | (-B1A, -C1A) | |
| • AEIO-320 | (-D1B, -D2B, -E1A, -E1B, -E2A, -E2B) | |
| • O-340 | (-A1A, -A2A, -B1A) | |
| • O-360 | (-A1A, -A1AD, -A1C, -A1D, -A1F, -A1F6, -A1F6D, -A1G, -A1G6, -A1G6D, -A1H, -A1H6, -A1LD, -A1P, -A2A, -A2D, -A2E, -A2F, -A2G, -A2H, -A3A, -A3AD, -A3D, -A4A, -A4AD, -A4D, -A4G, -A4J, -A4K, -A4M, -A4N, -A4P, -A5AD, -B1A, -B1B, -B2A, -B2B, -B2C, -C1A, -C1C, -C1E, -C1F, -C1G, -C2A, -C2B, -C2C, -C2D, -C2E, -C4F, -C4P, -D1A, -D2A, -D2B, -E1A6D, -F1A6, -G1A6, -J2A) | |
| • HO-360 | (-A1A, -B1A, -B1B, -C1A) | |
| • IO-360 | (-A1A, -A1B, -A1B6, -A1B6D, -A1C, -A1D, -A1D6, -A1D6D, -A2A, -A2B, -A2C, -A3B6, -A3B6D, -A3D6D, -B1A, -B1B, -B1C, -B1D, -B1E, -B1F, -B1F6, -B1G6, -B2E, -B2F, -B2F6, -B4A, -C1A, -C1B, -C1C, -C1C6, -C1D6, -C1E6, -C1E6D, -C1F, -D1A, -E1A, -F1A, -J1AD, -J1A6D, -K2A, -L2A, -M1A) | |
| • LO-360 | (-A1G6D, -A1H6, -E1A6D) | |
| • TO-360 | (-A1A6D, -C1A6D, -E1A6D, -F1A6D) | |
| • VO-360 | (-A1A, -A1B, -B1A) | |
| • AIO-360 | (-A1A, -A1B, -A2A, -A2B, -B1B) | |
| • HIO-360 | (-A1A, -A1B, -B1A, -C1A, -C1B, -D1A, -E1AD, -E1BD, -F1AD) | |
| • IVO-360 | (-A1A) | |
| • LIO-360 | (-C1E6) | |
| • LTO-360 | (-A1A6D, -E1A6D) | |
| • TIO-360 | (-A1A, -A1B, -A3B6, -C1A6D) | |
| • AEIO-360 | (-A1A, -A1B, -A1B6, -A1C, -A1D, -A1E, -A1E6, -A2A, -A2B, -A2C, -A3B6D, -B1B, -B1D, -B1F, -B1F6, -B1G6, -B2F, -B2F6, -B4A, -H1A, -H1B) | |
| • LHIO-360 | (-C1A, -C1B, -F1AD) | |
| • O-435 | (-6, -6A, -21, -25) | |
| • GO-435 | (-C2A, -C2A2) | |
| • VO-435 | (-A1A, -A1B, -A1C, -A1E, -A1F, -B1A) | |
| • TVO-435 | (-A1A, -B1A, -B1B, -C1A, -D1A, -D1B, -E1A, -F1A, -G1A, -G1B) | |
| • O-480 | (-1, -3) | |
| • GO-480 | (-D1A, -G1B6) | |
| • GSO-480 | (-A1A6, -A1C6, -A2A6, -B1A6, -B1B3, -B1B6, -B1C6, -B1E6, -B1F6, -B1G6, -B1J6, -B2C6, -B2D6, -B2G6, -B2H6) | |
| • IGSO-480 | (-A1A6, -A1B6, -A1C6, -A1D6, -A1E6, -A1F3, -A1F6, -A1G6) | |
| • O-540 | (-A1A, -A1A5, -A1B5, -A1C5, -A1D, -A1D5, -A2B, -A3D5, -A4A5, -A4B5, -A4C5, -A4D5, -B1A5, -B1B5, -B1D5, -B2A5, -B2B5, -B2C5, -B4A5, -B4B5, -D1A5, -E4A5, -E4B5, -E4C5, -F1A5, -F1B5, -G1A5, -G2A5, -H1A5, -H1A5D, -H1B5D, -H2A5, -H2A5D, -H2B5D, -J1A5D, -J1B5D, -J1C5D, -J1D5D, -J2A5D, -J2B5D, -J2C5D, -J2D5D, -J3A5, -J3A5D, -J3C5D, -L3C5D) | |
| • IO-540 | (-A1A5, -B1A5, -B1B5, -B1C5, -C1B5, -C1C5, -C2C, -C4B5, -C4C5, -C4D5, -C4D5D, -D4A5, -D4B5, -D4C5, -E1A5, -E1B5, -E1C5, -G1A5, -G1B5, -G1C5, -G1D5, -G1E5, -G1F5, -J4A5, -K1A5, -K1A5D, -K1B5, -K1B5D, -K1C5, -K1D5, -K1E5, -K1E5D, -K1F5, -K1F5D, -K1G5, -K1G5D, -K1H5, -K1J5, -K1J5D, -K1K5, -K2A5, -L1A5, -L1A5D, -L1B5D, -L1C5, -M1A5, -M1A5D, -M1B5D, -M1C5, -M2A5D, -N1A5, -P1A5, -R1A5, -S1A5, -T4A5D, -T4B5, -T4B5D, -T4C5D, -U1A5D, -U1B5D, -V4A5, -V4A5D, -W1A5, -W1A5D, -W3A5D, -AA1A5, -AA1B5, -AB1A5, -AC1A5) | |
| • HIO-540 | (-A1A) | |
| • TIO-540 | (-A1A, -A1B, -A1C, -A2A, -A2B, -A2C, -C1A, -E1A, -G1A, -H1A, -J2B, -J2BD, -K1AD, -N2BD, -R2AD, -S1AD, -T2AD, -U2A, -V2AD, -W2A, -AA1AD, -AB1AD, -AB1BD, -AE2A, -AF1A, -AF1B, -AG1A, -AH1A, -AJ1A) | |
| • AEIO-540 | (-D4A5, -D4B5, -D4C5, -D4D5, -L1B5) | |
| • LTIO-540 | (-F2BD, -J2B, -J2BD, -K1AD, -N2BD, -R2AD, -U2A, -V2AD, -W2A) | |
| • TIO-541 | (-A1A, -E1A4, -E1B4, -E1C4, -E1D4) | |
| • TIGO-541 | (-D1A, -D1B, -E1A, -G1AD) | |
| • IO-720 | (-A1A, -A1B, -A1BD, -B1A, -B1B, -B1BD, -C1B, -C1BD, -D1B, -D1BD, -D1C, D1CD) |
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| Dimensions | |
|---|---|
| Dimensions (W x H x D) | 2'' x 4.13'' x 1.88'' Inches |
| Length | 4.13'' Inches |
| Weight | 0.27 lbs |
| Specifications | |
|---|---|
| 8130-3 Eligible | Yes |
| ATA Chapter | 71 ATA Power Plant |
| Available Conditions | NE/NS |
| Cage Code | 80254 |
| Country of origin | United States |
| ECCN / USML | 9A991.d |
| FAA Approval Code | PC |
| Hazmat Code | Not Applicable |
| Hazmat(Y/N) | N |
| NSN | 2810-00-201-1829 |
| Schedule B | 8409.10.0040 |
| Total Shelf Life (days) | Not Applicable |
| Type | Valve |
| Units of Measure (UoM) | Each |
| Brand | Lycoming Engines |
| Condition status | Depreciated |