Attachment Components (In-Service Wear Limits) - Flow Control Valve (Unit)

TASK 21-51-51-200-001-A
Attachment Components (In-Service Wear Limits) - Flow Control Valve (Unit)

FIN: 11HB ** ON A/C NOT FOR ALL
FIN: 23HB ** ON A/C NOT FOR ALL
FIN: 24HB ** ON A/C NOT FOR ALL
FIN: 8HB ** ON A/C NOT FOR ALL

1. Reason for the Job
Self explanatory
2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
TASK 21-51-00-300-001-A	Attachment Components - Repair/Replacement
Attachment Components

3. Job Set-up
Subtask 21-51-51-010-054-A

A. Get Access
(1) Make sure that the applicable components are disassembled to do the inspection procedure.

4. Procedure
Subtask 21-51-51-210-052-A

A. Visual Inspection of the Spherical Bearings in the Bracket Assembly
(1) Use an applicable measurement method and do a check for radial and axial play at the spherical bearings (2) in the bracket assembly (21).
(a) If you find more than 0.05 mm (0.0020 in.) radial play or more than 0.2 mm (0.0079 in.) axial play in a spherical bearing (2) then you must replace the bracket assembly (21).

Subtask 21-51-51-220-051-A

B. In-Service Wear Limits
(1) Use applicable measurement equipment and measure the outside diameter (OD) of the bushings (6) and the inside diameter (ID) of the shouldered bushings (4).

NOTE: If any of the components are 'out of limits' then you must replace them.

for item (4) (Ref. AMM TASK 21-51-00-300-001).

FIG. DETAIL AND ITEM N°	ORIGINAL MANUFACTURING LIMITS	IN-SERVICE WEAR LIMITS
BB	8.986	8.995			8.979
OD 6	(0.3538)	(0.3541)			(0.3535)
			0.0050	0.0290			0.0430
			(0.0002)	(0.0011)			(0.0017)
BB	9.000	9.015				9.022
ID 4	(0.3543)	(0.3549)				(0.3552)

Subtask 21-51-51-220-052-A

C. In-Service Wear Limits
(1) Use applicable measurement equipment and measure the outside diameter (OD) of the bolts (5) and the inside diameter (ID) of the bushings (6).

FIG. DETAIL AND ITEM N°	ORIGINAL MANUFACTURING LIMITS	IN-SERVICE WEAR LIMITS
BB	6.325	6.335			6.318
OD 5	(0.2490)	(0.2494)			(0.2487)
			0.0150	0.0400			0.0540
			(0.0006)	(0.0016)			(0.0021)
BB	6.350	6.365				6.372
ID 6	(0.2500)	(0.2506)				(0.2509)

Subtask 21-51-51-220-053-A

D. In-Service Wear Limits
(1) Use applicable measurement equipment and measure the outside diameter (OD) of the bolts (5) and the inside diameter (ID) of the shouldered bushings (3).

NOTE: If any of the components are 'out of limits' then you must replace them.

for item (3) (Ref. AMM TASK 21-51-00-300-001).

FIG. DETAIL AND ITEM N°	ORIGINAL MANUFACTURING LIMITS	IN-SERVICE WEAR LIMITS
BB	6.325	6.335			6.318
OD 5	(0.2490)	(0.2494)			(0.2487)
			0.0150	0.0350			0.0490
			(0.0006)	(0.0014)			(0.0019)
BB	6.350	6.360				6.367
ID 3	(0.2500)	(0.2504)				(0.2507)

[Rev.10 from 2021] 2026.04.02 06:48:29 UTC