Ercoupe Service Memorandum No. 41
ERCOUPE 415-C · Service Bulletins
Overview
This document is a service memorandum for the Ercoupe 415-C aircraft, detailing modifications to the fuel pump pressure line routing due to potential chafing issues. It outlines the necessary steps for inspection and modification to ensure safety and reliability.
- Modification is required for Ercoupes up to serial number 3642.
- Fuel pumps with metal filter bowls are affected; those with glass bowls are not.
- Inspection for chafing should occur every 25 hours until modification is completed.
- The modification should be performed at the next 100-hour check.
- A service kit is available for purchase through Ercoupe dealers.
- Specific tools and parts are required for the modification process.
- Safety wire must be used for securing pump screws and other components.
- Proper installation of the fuel pump and cooling baffle is critical.
Document
Source
Originally published by univair.com. Sprinkle hosts a reference copy with an added summary, specifications and searchable full text.
Document details
- Type ·
- Service Bulletins
- File size ·
- 215 KB
- Publisher ·
- univair.com
- Language ·
- en
Specifications & performance
Extracted from this document.
Specifications
- Service kit price ·
- $1.75
- Fuel pump part number ·
- 1539076
What is the Ercoupe Service Memorandum No. 41?
The Ercoupe Service Memorandum No. 41 is a service bulletins for the ERCOUPE 415-C.
Where does the Ercoupe Service Memorandum No. 41 come from?
This copy of the Ercoupe Service Memorandum No. 41 was originally published by univair.com and is hosted on Sprinkle as a free, searchable reference copy.
Most owners only have the POH. Here's the essential set for the ERCOUPE 415-C.
- Pilot's Operating Handbook / AFM
- Checklist
- Maintenance Manual
- Parts Catalog (IPC)
- Systems & Wiring
- Service Bulletins on file
- Type Certificate (TCDS)
More ERCOUPE 415-Cmanuals & documents
- Ercoupe POHPilot's Operating Handbook
- Ercoupe Service Bulletin 33 Revision AService Bulletins
- Ercoupe Service Bulletin 32Service Bulletins
- Ercoupe Service Memorandum 44Service Bulletins
- Ercoupe Service Memorandum 46Service Bulletins
- Ercoupe Service Memorandum 51Service Bulletins
- Ercoupe Service Bulletins & Ltrs. by topicService Bulletins
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In this document
Preliminary Operations
Instructions for removing general parts such as the engine cowling and propeller to access the fuel pump.
Removal of Right Front Engine Cooling Baffle and Fuel Pump
Steps to disconnect and remove the cooling baffle and fuel pump from the engine.
Disassembly and Reworking of Fuel Pump
Guidelines for disassembling the fuel pump, checking parts, and reworking it for the modification.
Reworking of Right Front Engine Cooling Baffle
Instructions for modifying the cooling baffle to accommodate the new fuel pump routing.
Installation of Fuel Pump and Right Front Engine Cooling Baffle
Steps for reinstalling the modified fuel pump and cooling baffle, ensuring proper alignment and secure connections.
Installation of General Parts
Final steps for reinstalling the engine components and ensuring everything is secured properly.
Safety notes
- Failure to modify the fuel pump line may lead to eventual failure.
- Safety wire must be used on all critical components.
- Inspect for chafing at each 25-hour check until modification is completed.
- Ensure strain-free installation of hoses to prevent damage.
Full document text
ERCOUPE SERVICE MEMORANDUM No. 41 Failure of a fuel pump pressure line, due to chafing on the nose cowl has resulted in a change in the routing of the fuel pump lines. This change was effected at serial number 3643. Ercoupes up to and including serial number 3642 having fuel pumps incorporating metal filter bowl and bearing the AC part number 1539076 on the mounting flange, will be affected by this memorandum. The fuel pumps which use a glass filter bowl (AC 1523843 and AC 15339051) are not affected. It is recommended that this memorandum be complied with at the next 100 hour check because there is a possibility of an eventual failure of this line if not modified. Inspec- tion at each 25 hour check for chafing should be made until modification is effected. 1. Preliminary Operations: a. Remove the following general parts : l. Engine Top and Side Cowling Assembly ( 415-40422 and 415-40090 1/R). 2. Propeller Spinner ( 415-40593 or 415-40594). See Memo. No. 28. 3. Propeller ( 415-40500-2). 4. Engine Nose Cowl ( 415-40451). 2. Removal of Right front Engine Cooling Baffle and fuel Pump: a. Remove cooling baffle and fuel pump as fol- lows: l. Disconnect both fuel pump hoses after re- moving clamps. 2. Remove cooling baffle after removing front pump mounting nut and washer. 3. Remove fuel pump after removing rear pump mounting nut and washer. 3. Disassembly and Reworking of fuel Pump: a. Disassemble and rework fuel pump as fol- lows : (Ref. Page 3, Fig. 2.) l. Cut safety wire and remove the six screws joining upper and lower halves. There will be considerable spring pressure when re- moving the last screw. 2. Check the condition of the diaphragm while pump is disassembled. All fuel pump parts necessary for repair are available from the Continental Motors Corporation, and AC Automotive Service Stations. 3. Rotate top of pump 120° clockwise (two screw holes from the original position). 4. Reassemble pump halves with the six orig- inal lockwashers and screws. 5. Safety screws with brass safety wire, American Steel & Wire Gage No. 18 ( .041 dia.) 6. Replace pump inlet port fitting with AN842- 4D elbow, using Parker Sealube (6PE) on threads. 7. Replace pump outlet port fitting with 415- 48101-40 elbow having 1/16" restriction, using Parker Sealube ( 6PE) on threads. 4. Reworking of Right front Engine Cooling Baffle: (Ref. Page 3, Fig. I} a. Rework cooling baffle as follows: l. Mark two holes in baffle as illustrated in Fig. l. Page 3. 2. Drill two 3/4" diameter holes at the above marks. 3. Install two elastic grommets ( AN931-9-13) into the new holes. 4. Snap button plug ( 415-40589-1) into the extra unused hole. Page 2-MEMORANDUM No. 42 s. Installation of Fuel Pump and Righi Front fnglne Cooling Baffle: a. Install fuel pump and cooling baffle as follows: I. Insert fuel pump hoses through respective holes, with grommets, in cooling baffle. 2. Install fuel pump being certain that wobble arm lays on top of cam,Iobe inside of crankcase. 3. Install nut and washer on rear pump mount- ing stud. 4. Place cooling baffle, and attach to front pump mounting stud with nut and washer. 5. Install Palnuts on both pump mounting studs after the nuts are tightened. 6. Shorten outlet hose ( 415-48201-3) as neces- sary to permit strain-free installation. 7. Install fuel pump hoses 415-48201-3) onto respective elbows. 8. Secure with two hose clamps ( AN7 46-4) and safety clamps with brass safety wire, American Steel & Wire gage No. 18 ( .041 dia.) 6. lnsfallaflon of General Parts: a. Install the following general parts: I. Engine Nose Cowl ( 415-40451). 2. Propeller. If crankshaft in engine is the flange type, torque propeller hub bolts ( 125 175 inch/pounds), and then check track. The maximum track tolerance is 1/16". Safety hub bolts with brass safety wire, American Steel & Wire gage No. 23 ( .051 dia.) 3. Propeller Spinner ( 415-40923). 4. Engine top and side cowling assembly. Fuel Pump Modification Service Kit No. 7 contains the following items: Nomenclature Elhow, Pipe thread and hose 45° 1/16~' I.D. Restriction .. Elhow, Pipe thread and hose 90° ( 415-48101-41 ). .. Plug, Button Grommet, Elastic ( 415-40400-55). .. Part Number 415-48101-40 AN842-4D 415-40589-1 AN931-9-13 The Kit may be purchased through Ercoupe Dealers at a price of $1.75 list. Qty. I I I 2 ERCOUPE SERVICE DEPT. MEMORANDUM No 42 INSERT BUTTON I"'I..UG (PART No. 415-40589~· MODI!'"ICATION OF R/0/'tT FRONT IN EX'I5TfN6 HOLE ENC7/NE COOLING BAFFLE (PART No415"-4040.3) (For r"piCYcemenf, order EIJgi/ie Coo/tn9' Bq-f'rfe (Porf Fl (7. 1 No.4 15-405'69) CIJTHOS£ TO StiORTEN AS EO INSTALL INLET FIT TIN() 90"ELBOW I ,, ELA C GROMMET5 AN9.3!-9 -I!!J LJ,. 45"ELBOW 1-i "RESTR!C- '"'A' (PART No NOT£: 415·48/0f-.tO)ON CUTLET. -'AF!TY WIRE 1705£ CLAf\1PS (PUMP .SCREWS {Of.11TT£0 FROM IL.LUSTRATION FOR CL.ARIT'(.) UPPER SECTION OF PV/'-1P ROTATED 2 HOL£5 (CLOCKWISE) FROM POSI ON RIGHT FRONT t:N151NE CCJOL!N6 BAFFLE RE-WORKED AS SHOWN ABOVE RELOCATION OF FUEL PUMP (FUEL LINES f"/6. 2