Mooney SIM20-94 Owner's manual

Brand: Mooney

Model: SIM20-94

Type: Owner's manual

SER VICE IN STRUC TION M20-94

DATE 6-20-92

SUB JECT:M20M - ENGINE FO CAL MOUNT ORI EN TA TION CLAR I FI CA TION

MODEL/

S/N AF FECTED:M20M, S/N 27-0002 THRU 27-0069, EX CLUDING 27-0025

TIME OF

COM PLI ANCE:AT ENGINE OR ENGINE MOUNT CHANGE

IN TRO DUC TION:

Part of the early de vel op ment of the M20M air craft con sisted of a change to the fo cal point a n gle

on the en gine mount ing adapt ers and the tu bu lar en gine mount. This is a slight an gle change

that re quired new mount ing adapter blocks from Lycoming, a new Moo ney de signed en gine

mount and new rub ber iso la tors for the en gine mount points.

It is pos si ble for the en gine with the orig i nal fo cal an gle and an en gine mount with the ne w fo cal

an gle (31o) (or vice-versa) to be cou pled to gether. How ever, a mis-match should be ob vi ous to

main te nance per son nel; the re sul tant en gine in stal la tion will not be po si tioned cor rectly in re la -

tion to the cowl ing.

This Ser vice In struc tion is to ad vise field per son nel of this pos si bil ity in case of an en gine or en -

gine mount change.

IN STRUC TIONS:

1. If the en gine on any of the above S/N air craft is to be changed for any rea son, the air frame and

en gine log book MUST BE RE FERRED TO to de ter mine if the air craft be ing ser viced has had the

en gine mount changed from the orig i nal con fig u ra tion to the the new 31o fo cal point con fig u ra -

tion.

2. The orig i nal Moo ney en gine mount con fig u ra tion part num ber is 590047-501. The new 31o

Moo ney en gine mount con fig u ra tion part num ber is 590048-501. The Lycoming adapter blocks

on the en gine as well as the Lord Mfg. iso la tion mounts will also have been changed for the

590048-501 Moo ney en gine mount in stal la tion.

This con fig u ra tion has been in stalled on pro duc tion air craft, S/N 27-0001, 27-0025 and 27-0070

and ON. There may have been other air craft within this S/N range retro fit ted by field per son nel

also. This ret ro fit ac tion is dif fi cult to keep track of by fac tory per son nel. That is the rea son for the

check of the air craft and en gine log books.

3. There are two con di tions that re quire spe cial han dling if the air craft is in orig i nal co n fig u ra tion:

—When the en gine is to be re placed with a new or fac tory re-manufactured en gine the

Lycoming adapter blocks will need to be re moved from the ex ist ing en gine and placed on the re -

place ment en gine.

—When the en gine mount is to be re placed for any rea son, the orig i nal en gine con fig u ra tion

Lycoming adapter blocks will re quire re place ment with Lycoming 31o fo cal blocks, P/N

12A21320 and the new Lord Mfg. rub ber iso la tors, P/N J9613-82 (4 re quired). The old en gine

mount con fig u ra tion, P/N 590047-501, is no lon ger avail able.

Con tact the Moo ney Fac tory Ser vice Parts De part ment for the in for ma tion needed for this re -

place ment ac tion.

WAR RANTY:N/A - IN FOR MA TION S.I. ONLY -

REF ER ENCE

DATA:N/A

PARTS LIST:KIT PART NUMBER - N/A

FIG URE/TA BLES:N/A

Mooney SIM20-94 Owner's manual

Mooney SIM20-94 Owner's manual

Mooney SIM20-94 Owner's manual

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