Thrust Reverser Deac va on Procedure

General

1. This task is used to prevent the accidental opera on of the thrust reversers on an

applicable engine when persons or equipment are in the area.

2. To isolate the thrust reverser hydraulic system from the airplane hydraulic system, a

lockpin is installed in the manual shutoff valve handle and into the control valve

module.

3. The two lockpins, which are in a co on storage bag, are part of the fly‐away kit.

4. Use this task for ground maintenance only. Do not use this task for deac va on for

flight dispatch.

Procedure

1. Make sure that the applicable thrust lever is in the idle posi on.

a. A ach a DO‐NOT‐OPERATE tag.

2. Make sure that the applicable reverse thrust lever is forward and down in the retract

(stow) posi on.

a. A ach a DO‐NOT‐OPERATE tag.

3. For Engine 1, open this circuit breaker and install safety tag:

a. CAPT Electrical System Panel, P18‐2

4. For Engine 2, open this circuit breaker and install safety tag:

a. F/O Electrical System Panel, P6‐2

5. Do these steps to install the lockpin, SPL‐2418 kit:

NOTE:

The, C78004‐2, thrust reverser lockpins are contained in the C78004‐1 lockpin

kit. The C78004‐1 lockpin kit is contained in the 012A8102 fly‐away kit. The

fly‐away kit bag is marked 737NG GROUND SUPPORT EQUIPMENT.

For Engine 1, the control valve module is on the le side of the keel beam in

the main gear wheel well.

For Engine 2, the control valve module is on the right side of the keel beam in

the main gear wheel well.

a. Turn the manual shutoff valve handle clockwise to align the lockpin holes in the

manual shutoff valve handle and the control valve module.

b. Install the lockpin C78004‐2.

1. Make sure that the lockpin is pushed fully in and engages the control

valve module.