TB 1--1520--240--20--145
7.
Parts to be Inspected. --
NOMENCLATURE
PART NUMBER
NATIONAL STOCK NUMBER
CYLINDER, ACTUATING DUAL
PIVOTING:
BEARING-PLAIN SELF-ALIGN-
145HS001-1
3120-01-111-0693
ING
PIN, COTTER
MS24665-304
NUT, PLAIN
AN320-8
WASHER, PLAIN
NAS1149FO863P
BOLT ASSEMBLY
114R3650-3
RING ASSEMBLY, SWASH-
PLATE:
RING
414R3351-2
BUSHING
114R3116-54
3120-01-066-5380
BUSHING, SLEEVE
145R3116-1
3120-01-129-7648
Inspection Procedures .
a. Prepare aircraft for safe ground maintenance.
b. Per Task 7-124 of reference 13. B (CH- / MH-47D), and Task 7-146 of reference 13. C (MH-47E),
remove forward pivoting actuator to swashplate bolt.
NOTE
Maintainers were installing AFT pivoting actuator bearing in the forward
actuator . The suspected wrong part is bearing P/N 145HS001-2. Its out-
er diameter (OD) is the same as P/N 145HS001-1, but the inner diame-
ter (ID) is different. The --2 inner diameter is 0.6250 + .0000 /-- .0005; the
correct --1 inner diameter is 0.5000 + .0000 /-- .0005.
c. Measure inner diameter of bearing on pivoting actuator at swashplate attachment point.
(1) If bearing ID equals .625 inches, proceed to paragraph 8d.
(2) If bearing equals ID .5 inches reconnect forward pivoting servo cylinder per Task 7-131 of ref-
erence 13.B (CH--/MH--47D), and Task 7-154 of reference 13.C (MH--47E). Inspection is complete. Proceed
NOTE
For reference 13. D, Figure 244, Item No. 95, and reference E, Figure
7-48, Item No. 95, the part number listing is incomplete and the Usable
On Code (UOC) is incorrect. The part number (s) and description and
UOC, for both references, should read:
ITEM NUMBER
PART NUMBER
DESCRIPTION AND UOC
95
145HS001-1
BEARING, PLAIN, SELF
U/W FWD PIVOTING ACTUA-
TOR PN 145H6600-19
95
145HS001-2
BEARING, PLAIN, SELF
U/W AFT PIVOTING ACTUA-
TOR PN 145H6600-20
d. Remove forward pivoting servo cylinder per Task 7-124 of reference 13.B (CH--/MH--47D), and Task
7-146 of reference 13.C (MH-47E).
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