Volare [Borg Warner/Marvel Schebler/Facet/Precision] Carburetor Service Letters & Bulletins

Transcription

1 Volare [Borg Warner/Marvel Schebler/Facet/Precision] Carburetor Service Letters & Bulletins Obsolete Recurring SB MA-3A MA-3PA Volare [Borg Warner/Marvel Schebler/Facet/Precision]Carburetor SBs AA MA-5AA MA-5 MA-4-5AA MA-4-5 MA-4SPA MA-3SPA Data plate stamp Reason for SB X SB-17 X X X X X X X X X X Bowl to Throttle-body inspection for looseness SB-16 X X X X X X X X X X X Data plate tags removed from OEM carburetors and FAA PMA tags installed X SB-15 X X X X X X X X X X X Correct throttle plate screw retention SB-14A X X X X X X X X X X Removal of float bracket from new floats made after 2010 by Volare SB-13 X X Inspection of Accelerator Pump Plungers X SB-11 X X X X X X X X X X X Unapproved repair practices X SB-10 X X X X X X X X X X X Thread sealant in fuel passages X SB-09 X X X X X X Inspection and replacement of faulty Accelerator Pump Lever Assemblies SB-08B X X X X X X Replacement of Weighted valves with Spring Loaded Valves SB-07A X Mixture control stop repair for Carburetors X SB-06 X Inspection of Mixture Control Stop for permissible wear: Compliance of SB A1-78 Compulsory SB-05A X X X X X X X X X X X Supecedure of MSA-13 X SB-04B X X X X X X X X X X FC on housing see SB Float clearance X SB-03 X AP on housing see SB Wear of accelerator pump plunger's snap ring groove SB-02A X X X X X X X X X X X FF on data plate The replacement of floats with BLUE FOAM floats SB-01 X X X X X X X X X X X Use of unauthorized parts in carburetors X X MSA-14 X X X X X X X X X X X Superseded by SB-17 X MSA-13 X X X X X X X X X X X FF on data plate Removal of METAL floats from FACTORY OVERHAULED carburetors MSA-12 X X X X X X X X X X X Revision of Maintenance Manuals Addition of NDT inspection MSA-11 X X X X X X X X X X X Australian AVGas contamination X MSA-10 X Casting flaw lines MSA-9 X Modification: [Nozzle ] [Nozzle ] MSA-8 X Modification: [Nozzle ] MSA-7 X Modification: [Nozzle ] X MSA-6 X Improved retaining methods for carburetors mixture valve X MSA-5 X X X X X X X X X X X Use of unauthorized parts in carburetors X MSA-4 X X X X 92 on data plate Consolidated Fuel system floats dated replacement X MSA-3 X X X X X X X X X X X TBO periods for carburetors

2 Obsolete Recurring SB MA-3A MA-3PA Volare [Borg Warner/Marvel Schebler/Facet/Precision]Carburetor SBs AA MA-5AA MA-5 MA-4-5AA MA-4-5 MA-4SPA MA-3SPA Data plate stamp Reason for SB X MSA-2 X X X X V on data plate Replacement of two piece venturi with ONE piece venturi X MSA-1 X X X X X X X X X X X MF on data plate Replace composite floats with METAL floats X SB A2-90 X X X X X X X X X X X Carburetor floats X SB A1-90 X X X X Primary and Main venturi SB A1-88 X X X X X X Possible loose pin: SB A1-87 X 87 on data plate Carburetor return and inspection X SB A1-86 X X X X X X X X X X X TBO frequency X SB A1-84 X X X X X X X X X X X MF on data plate Plastic float replacement with METAL FLOATS SB A1-82 X Improved drain plugs SB A1-81 X Uneven float shaft & bracket wear SB A1-79 X Improve sealing of economizer channel plug SB A2-78 X Pump rod installation, improved methods SB A1-78 X Mixture control retaining method SB A1-76 X X X X X X X X X X X Carburetor cleaning SB A1-71 X Method of securing cam lever SB A1-69 X X X X X X X X X X X A1 on data plate Excessive thread lube, causing fuel contamination SB A5-67 X X X X Pump inlet check valve redesign X SB A4-67 X X X X New throttle shaft bushings X SB A2-67 X X X X X X X X Float clearance check X SB A1-67 X X X Replacement of float clips X SB A3-66 X X X X X Main venturi replacement SB A2-66 X X Throttle spring removal, modification A A A A A A X SB A1-66 X X X 64 on data plate AD: revision X SB A2-65 A & A replaced with: X SB A1-64 X X X X Positive retraction attachment, float to valve X SB A6-63 X X X Mechanical attachment, float to valve X SB A5-63 X X X X X X X X X X Safety wiring of screws, throttle body to bowl SB A4-63 X X V on data plate One-piece venturi for MA-4-5 SB A3-63 X Modification: A A M [Piper Cherokee] X SB A1-63 X X X X New float valve assembly X SB A12-62 X X X X Improved seal installation SB A11-62 X Modification: A A M [Mooney A/C] X SB A10-62 X X X X X X X X X X Improved Long-lok installation X SB A9-62 X X X X X X X X X X Overhaul frequencies X SB A8-62 X X X X X X X X X X Viton-tipped float valve SB A7-62 X X X X X X X X X X Float bracket mounting screw holes with bottoming tap SB A4-62 X X X X X X X X X X Retapping of float bracket mounting screw holes with 4-40 tap X SB A no longer available

3 Obsolete Recurring SB MA-3A MA-3PA Volare [Borg Warner/Marvel Schebler/Facet/Precision]Carburetor SBs AA MA-5AA MA-5 MA-4-5AA MA-4-5 MA-4SPA MA-3SPA Data plate stamp Reason for SB X SB A6-61 X X X X New solid rubber floats X SB A5-61 X Automatic altitude bellows for A SB A4-61 X Modification: A A X SB A3-61 X X X X X X X X X X Float valve and seat replacement SB A2-61 X Modification: A A X SB A1-61 X X X X Throttle body to bowl gaskets X SB A18-60 X X X X Servicing the throttle shaft o-rings X SB A17-60 X X Update on servicing Altitude Bellows X SB X X X X X X X X X X Factory standards X SB X X X X X X X X X X Notice for kits with Long-lok insert screws X SB X X Notice for servicing altitude bellows X SB X X X X New pump linkage with cotter pin holes X SB A11-60 X X X X X X X X X X Identification of Long-lok seats X SB X X X X X X X X X X Long-lok inserts in seats X SB 9-60 X X X X X X X X X X Long-lok inserts in screws X SB 5-60 X X X Proper float drop = 2 ¼ 2 5 / 16 SB 3-60 X Modification: A A X SB X Float drop settings X SB 8-59 X New automatic altitude bellows X SB 4-59 X Solid rubber floats AvStar Direct Service Bulletins Pertaining to Volare [Borg Warner/Marvel Schebler/Facet/Precision Carburetors AvStar SB Volare SB Dataplate Stamp Reason For SB AFS-SB4 SB-13 Pump plungers for MA-3 carburetors AFS-SB3 SB-04 Brass float clearance in Volare carburetors AFS-SB2 SB-02 MF Use of Brass Floats in Volare carburetors AFS-SB1 SB-01 Use of unauthorized parts in carburetors

4 Kelly Aerospace Bulletins Pertaining to Volare [Borg Warner/Marvel Schebler/Facet/Precision]Carburetors Kelly SB Volare SB Model Data Plate stamp Reason for SB SB-32 MA-4-5; Inspection of throttle valve screws SL-37 SB-08 MA-4-5; MA-5; Replacement of Weighted valves with Spring Loaded Valves SL-36 SB-06 SL-35 SB-05 All Supercedure of MSA-13 SL-34 SB-03 AP Accelerator pump inspection Inspection of Mixture Control Stop for permissible wear: Compliance of SB A1-78 Compulsory SL-33 SB-11 All Use of unapproved repair methods SL-32 SB-10 All Use of unauthorized thread sealant SL-31 SB-09 MA-4-5; MA-5; Inspection and replacement of faulty Accelerator Pump Lever Assemblies SL-30 SB-04 All Brass float clearance in Volare carburetors SL-29 SB-02 All MF Use of Brass Floats in Volare carburetors SL-28 SB-01 All Use of Unauthorized parts in Volare carburetors SL-27A MSA-13 All MF Use of Brass Floats in Precision carburetors

5 TCM Bulletins Pertaining to Volare [Borg Warner/Marvel Schebler/Facet/Precision] Carburetors TCM SB Volare SB Model Part Number Data Plate stamp Reason for SB SB09-6 SB-05 All Supecedure of MSA-13 SB09-5 SB-04 All FC on housing see SB Float clearance SB09-3 SB-02 AP on housing see SB Wear of accelerator pump plunger's snap ring groove SB09-2 SB-01 All Use of unauthorized parts in carburetors SB08-7 MSA-14 All Inspection of throttle body/bowl screws for looseness SID97-7 MSA-10 MA-4-5 Casting flaw lines SID94-12 MSA-7 Modification: [Nozzle ] M88-15 SB A1-88 MA-4-5 Possible loose pin: M73-12 SB A1-74 MA-3/-4-5 Updated parts Lists and Exploded Views

6 Textron Lycoming Bulletins Pertaining to Volare [Borg Warner/Marvel Schebler/Facet/Precision]Carburetors Lycoming SB Volare SB Model Part Number Data Plate stamp Reason for SB SB582 MSA-13 All FF Removal of METAL floats from FACTORY OVERHAULED carburetors SB504 MSA-4 MA-3, MA-4 92 Consolidated Fuel system floats dated replacement SB498B MSA-2 MA-3, MA-4 V Replacement of two piece venturi with ONE piece venturi SB494A MSA-1 All MF Replace composite floats with METAL floats SB483 SB A1-88 MA-4-5; MA-5; Possible loose pin: SB481 SB A1-87 MA-3PA 87 Carburetor return and inspection SB436 SB A2-79A ; Carburetor contamination, replacement of carburetors SB434 SB A Improve sealing of economizer channel plug SB409 Kit replacement SB366B MSA-14 All Throttle body to bowl looseness SB352 SB ; Method of securing cam lever SB330B All Retighten and lockwire throttle arm screw SB310 SB A3-66 MA-4-5, MA-5, V Main venturi replacement SB297A SB A4-63 MA-4-5 V One-piece venturi for MA-4-5 SB258 MA-4SPA Oil sump modification on all Piper aircraft equipped with engines Service Instructions Initial Torque for hold SI1984A All ¼ inlb down nuts 5/ inlb SI1428 A after PN Modification: , , SI1421 MS609/631 C after PN Modification: Final 96 inlb 204 inlb SI1413 SB A1-81 Uneven float shaft & bracket wear SI C after PN New float valve P/N: SI1395A MA-4SPA Modification: Same as SI1393 MA-3PA E after PN Modification: E Same as SI Modification: [Idle tube: ] SI1373 SB A2-78 Pump rod installation, improved methods SI1370 SB A1-78 Mixture control retaining method SI1305C MA-4SPA N after PN Modification N Become N [Nozzle: ] SI1271A MA-3PA M1 after SN Modification: [Nozzle: ] SI1265A All Replacement of throttle shaft assy. with serrated throttle arm and shaft SI1206 SB A2-67 MA-3,MA-4, MA-4-5, Float clearance check SI1161 AA Effective for carburetors with SN bellow AH installed on TVO-435-A1A, -B1A, -D1A, external packing on throttle shaft SI1523 All Application of AvStar Carburetors in Textron Lycoming engines Service Letters SLL186 SB A1-78 Mixture control retaining method

7 Volare [Borg Warner/Marvel Schebler/Facet/Precision] ADs and SB Equivalents AD SB Equivalent Model Data plate stamp Reason for SB SB A4-63 MA-4-5 V One-piece venturi SB A1-69 All A1 Excessive thread lube, causing fuel contamination All Throttle Arm securing technique Kit replacement Replacement of carburetor PN: SB A1-87 MA-3PA 87 Carburetor return and inspection SB A1-88 MA-4-5, MA-5, AA Possible loose pins MSA-4 MA-3A, -3PA, - 3SPA, -4SPA 92 Consolidated Fuel system floats dated replacement SB A1-78, MSA-6 Improved retaining methods for carburetors mixture valve MSA-2, -7, -8, -9 MA-3A, -3PA, - 3SPA, -4SPA V One-piece venturi