No Braking of the Wheels during the Landing Gear Retraction

TASK 32-42-00-810-839-A
No Braking of the Wheels during the Landing Gear Retraction

1. Possible Causes

LEVER-L/G NORM CTL [6GA]
BSCU [10GG]
wiring from the L/G Normal control lever (6GA) to the BSCU (10GG)
wiring from the L/G Normal control lever (6GA) pin A/H to the ground terminal

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
AMM 32-31-11-000-001	Removal of the Landing Gear Normal Control lever
AMM 32-31-11-400-001	Installation of the Landing Gear Normal Control Lever
AMM 32-42-00-710-004	Operational Test of the Automatic Braking when the Landing Gear is retracted
ASM 324201
AMM 32-42-34-000-001	Removal of the Braking/Steering Control Unit (BSCU)
AMM 32-42-34-400-001	Installation of the Braking/Steering Control Unit (BSCU)

3. Fault Confirmation
Subtask 32-42-00-710-050-A

A. Test
(1) Do the operational test of the automatic braking when the landing gear is retracted AMM 32-42-00-710-004.
(2) Make sure that the brake unit pistons do not come out of their housings.

4. Fault Isolation
Subtask 32-42-00-810-096-A

A. If the test confirms the fault:

replace the LEVER-L/G NORM CTL [6GA] AMM 32-31-11-000-001 and AMM 32-31-11-400-001.

(1) If the fault continues:

replace the BSCU [10GG] AMM 32-42-34-000-001 and AMM 32-42-34-400-001.

(2) If the fault continues:

do a check for a ground signal at the L/G Normal control lever (6GA) pin A/H ASM 324201.

(a) If there is a ground signal:

do a check and repair the wiring from the L/G Normal control lever (6GA) to the BSCU (10GG) pin A/B to pin AA/12E.

(b) If there is no ground signal:

repair the wiring from the L/G Normal control lever (6GA) pin A/H to the ground terminal.

Subtask 32-42-00-710-051-A

B. Test
Do the test given in Para. 3.A.(1).

[Rev.8 from Aug 2018] 2026.04.04 04:40:16 UTC