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Grumman Aircraft Engineering Corporation

LOG

				Page No	73116
Engineer	S. SARBELLO	Project	LM-5	Location	ACE-3
Time	NIGHT SHIFT	Title		Date	8/16-17/68

1. HOMBURGER VERIFIED IMU INSTALLATION NOT THE CAUSE OF ISOLATION PROBLEM.

2. TONIGHT PTA UNIT WAS INSTALLED -- ALSO NOT THE CAUSE OF ISOLATION PROBLEM. ISOLATION OK (300 Ω) TO DATE. RREA & RRAA STILL OPEN ITEMS TO BE REINSTALLED & EVALUATED.

3. RAN TDR #33 TO STEP #49. ALSO RECONNECTED P722 & PSAAM.

4. TOOK BIDDLE-DUCTER READINGS AND TORQUE MEASUREMENTS ON TDR #3 (STEPS #227 THRU #232). CONFIRMED HIGH Ω READING BETWEEN ECA 4-4 AND 4-2. REMOVED ALL MOUNTING HARDWARE AFTER TORQUE MEASUREMENT SHOWN TO BE WITHIN SPEIFIED TOLERANCES (60"/LBS +/- 5). HARDWARE & PHENOLIC COVERS HELD BY FRANK DAMIS, DEPT 053. RECOMMEND CLEAN ALL HARDWARE OF POTTING COMPOUND AND OXIDATION THEN REASSEMBLE AND RE CHECKED BY BIDDLE-DUCTER. THE COMPOSITE DATA IS AS FOLLOWS:

FLUKE METHOD

ECA #3

TERM 4-2 = .36 MΩ

TERM 4-1 = .48 MΩ

ECA #4

5.10 mΩ

5.14 MΩ

BIDDLE-DUCTER

ECA #4

6.8 MΩ

8.5 MΩ

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