Removal of the Hand Pump

TASK 29-16-42-000-001-A
Removal of the Hand Pump

WARNING: OBEY THE HYDRAULIC SAFETY PROCEDURES.

1. Reason for the Job
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	1	ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE
No specific	AR	CAP - BLANKING
No specific	1	CONTAINER 5 L (1.32 USGAL)
No specific	1	PLUG - BLANKING
No specific	1	WARNING NOTICE(S)

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
197BB
197KB

C. Referenced Information

REFERENCE	DESIGNATION
TASK 29-00-00-864-001-A	Put the Related Hydraulic System in the Depressurized Configuration before Maintenance Action
TASK 29-00-00-910-002-A	Safety Procedures of the Hydraulic System
TASK 29-14-00-614-001-A	Depressurization of the Hydraulic Reservoirs
Hand Pump

3. Job Set-up
Subtask 29-16-42-010-050-A ** ON A/C NOT FOR ALL

A. Get Access
(1) Remove the access panel 197KB.
(2) Put the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE in position below the ground service panel of the Green hydraulic system.

Subtask 29-16-42-010-050-B ** ON A/C NOT FOR ALL

A. Get Access
(1) Remove the access panel 197BB.
(2) Put the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE in position below the ground service panel of the Green hydraulic system.

Subtask 29-16-42-860-050-A

B. Aircraft Maintenance Configuration
(1) Obey the hydraulic safety procedures (Ref. AMM TASK 29-00-00-910-002).
(2) Put the WARNING NOTICE(S) in position to tell persons not to pressurize the hydraulic systems:

in the cockpit on the hydraulic section 40VU of the overhead panel.

(3) Make sure that the hydraulic systems are depressurized and put them in the maintenance configuration
(Ref. AMM TASK 29-00-00-864-001).
(4) Depressurize the reservoirs of the Green ,Yellow and Blue hydraulic systems (Ref. AMM TASK 29-14-00-614-001).
(5) Put the CONTAINER 5 L (1.32 USGAL) below the hydraulic connections to collect the hydraulic fluid.

4. Procedure
Subtask 29-16-42-020-050-A

A. Removal of the Hand Pump

CAUTION: USE A SECOND WRENCH TO APPLY COUNTERTORQUE TO THE UNION WHEN YOU DISCONNECT/CONNECT HYDRAULIC LINES ON UNIONS. IF YOU DO NOT USE THE SECOND WRENCH, THERE IS A RISK THAT YOU WILL LOOSEN OR TIGHTEN THE UNION TOO MUCH.

(1) Loosen the union nut (7) and remove the pipe from the adapter (8).
(2) Put a PLUG - BLANKING on the disconnected line end.
(3) Remove the bolts (15) and the washers (16) from the bracket (17).
(4) Remove the screws (4) and the washers (5).
(5) Remove the bracket (17) from the ground service panel (6).
(6) Hold the hand pump (3).
(7) Remove the bolts (20) and the washers (19) from the bracket (18).
(8) Pull the hand pump (3) out of the ground service panel (6).
(9) Remove the adapter (8) and the O-ring (11). Discard the O-ring.
(10) Remove the plug (9) and the O-ring (10). Discard the O-ring.
(11) Remove the fill valve (1) and the O-ring (2). Discard the O-ring.
(12) Put a CAP - BLANKING on the ports of the hand pump.

[Rev.10 from 2021] 2026.04.01 00:25:22 UTC