DOC AIRBUS | AMM A320FSPOP 416 - Removal of the Broken Bolts or Studs [PW11]
TASK 70-24-00-910-804-A
SPOP 416 - Removal of the Broken Bolts or Studs
This procedure gives general instructions to remove the broken bolts or studs.
Use the Method 1 or Method 2 procedure to remove the broken bolts or studs. It is permitted to use the Method 2 procedure only if all of the fractured surface of the broken bolt or stud is above the mating surface of the part.
A. Fixtures, Tools, Test and Support Equipment
B. Consumable Materials
C. Work Zones and Access Panels
D. Referenced Information
3. Job Set-up
Subtask 70-24-00-860-055-A ** ON A/C NOT FOR ALL
Subtask 70-24-00-911-051-A ** ON A/C NOT FOR ALL
[Rev.10 from 2021]
2026.04.02 06:31:41 UTC
SPOP 416 - Removal of the Broken Bolts or Studs
WARNING:
BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.
ZONE: 400
1. Reason for the JobThis procedure gives general instructions to remove the broken bolts or studs.
Use the Method 1 or Method 2 procedure to remove the broken bolts or studs. It is permitted to use the Method 2 procedure only if all of the fractured surface of the broken bolt or stud is above the mating surface of the part.
NOTE: Always obey the specific procedures and limits in the Aircraft Maintenance Manual (AMM) maintenance task.
2. Job Set-up InformationA. Fixtures, Tools, Test and Support Equipment
| REFERENCE | QTY | DESIGNATION |
|---|---|---|
| No specific | 1 | BRUSH - WIRE |
| No specific | 1 | EXTRACTOR - SCREW |
| REFERENCE | DESIGNATION |
|---|---|
| (Material No.P03-001) | lubricant, aircraft turbine engine (synthetic base) |
| (Material No.PU1-0035) | Inconel welding wire |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| 400 | POWER PLANT, NACELLES AND PYLONS |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 70-24-00-910-801-A | SPOP 427 - Application of Penetrating Oils for Disassembly |
| TASK 70-24-00-910-818-A | Replacement of the Oversize Studs |
| TASK 70-27-00-910-804-A | SPOP 208 - Degreasing of Parts by Solvent Wiping |
Subtask 70-24-00-860-055-A ** ON A/C NOT FOR ALL
A. Not Applicable
4. ProcedureSubtask 70-24-00-911-051-A ** ON A/C NOT FOR ALL
A. Removal of the Broken Bolts or Studs
(1) Method 1 − Procedure:
(a) Remove broken bolts or studs by mechanical removal methods, unless specified differently by the AMM.
(b) Drill a hole into the end of the broken bolt or stud. Refer to the tool manufacturer’s instructions for the correct size of the drill.
(c) Apply SPOP 427 penetrating oil to the threads that are visible and permit to soak (Ref. AMM TASK 70-24-00-910-801).
(d) Put the EXTRACTOR - SCREW into the drilled hole and lock into position.
(e) Turn the EXTRACTOR - SCREW in a counterclockwise direction to remove the broken bolt.
(f) Tap the threads if necessary to clean or chase the threads.
1 It is permitted to useP03-001 lubricant, aircraft turbine engine (synthetic base)
(g) Examine the threads for damage or an oversize condition. If there is thread damage or an oversize condition, refer to (Ref. AMM TASK 70-24-00-910-818).
(2) Method 2 − Procedure:
(a) Get a non−silver−plated nut or bolt that is the correct size for the necessary removal application.
(b) Clean the mating surfaces or the non−silver−plated nut or bolt and the broken bolt or stud with a stainless steel BRUSH - WIRE and then a SPOP 208 solvent wipe (Ref. AMM TASK 70-27-00-910-804).
(d) Weld the non−silver−plated nut or bolt to the broken bolt or stud. If necessary, use Inconel welding wire (Material No.PU1-0035) or filler rod that is compatible with the broken bolt or stud and with the non−silver− plated nut or bolt. Use the minimum quantity of weld that is necessary to satisfactorily attach the non−silver−plated nut or bolt to the broken bolt or stud.
(e) Let the surfaces return to room temperature.
(f) Apply SPOP 427 penetrating oil to the threads that are visible and permit to soak (Ref. AMM TASK 70-24-00-910-801).
(g) Use an applicable wrench to remove the bolt or stud and discard the broken bolt or stud.
(h) Solvent wipe clean the hole by SPOP 208 (Ref. AMM TASK 70-27-00-910-804).
(i) Tap the threads if necessary to clean or chase the threads.
(j) It is permitted to useP03-001 lubricant, aircraft turbine engine (synthetic base)
(k) Examine the threads for damage or an oversize condition. If there is thread damage or an oversize condition, refer to (Ref. AMM TASK 70-24-00-910-818).
(1) Method 1 − Procedure:
(a) Remove broken bolts or studs by mechanical removal methods, unless specified differently by the AMM.
(b) Drill a hole into the end of the broken bolt or stud. Refer to the tool manufacturer’s instructions for the correct size of the drill.
(c) Apply SPOP 427 penetrating oil to the threads that are visible and permit to soak (Ref. AMM TASK 70-24-00-910-801).
(d) Put the EXTRACTOR - SCREW into the drilled hole and lock into position.
(e) Turn the EXTRACTOR - SCREW in a counterclockwise direction to remove the broken bolt.
(f) Tap the threads if necessary to clean or chase the threads.
1 It is permitted to use
(g) Examine the threads for damage or an oversize condition. If there is thread damage or an oversize condition, refer to (Ref. AMM TASK 70-24-00-910-818).
(2) Method 2 − Procedure:
(a) Get a non−silver−plated nut or bolt that is the correct size for the necessary removal application.
(b) Clean the mating surfaces or the non−silver−plated nut or bolt and the broken bolt or stud with a stainless steel BRUSH - WIRE and then a SPOP 208 solvent wipe (Ref. AMM TASK 70-27-00-910-804).
CAUTION:
PROTECT THE ADJACENT CASE OR HOUSING SURFACES FROM WELD SPATTER/SPARKS OR STRAY ELECTRICAL ARCS. IF YOU DO NOT OBEY THIS INSTRUCTION, DAMAGE TO PARTS CAN OCCUR.
(c) Protect the adjacent surfaces of the part from welding spatter/sparks and stray electrical arcs. (d) Weld the non−silver−plated nut or bolt to the broken bolt or stud. If necessary, use Inconel welding wire (Material No.PU1-0035) or filler rod that is compatible with the broken bolt or stud and with the non−silver− plated nut or bolt. Use the minimum quantity of weld that is necessary to satisfactorily attach the non−silver−plated nut or bolt to the broken bolt or stud.
(e) Let the surfaces return to room temperature.
(f) Apply SPOP 427 penetrating oil to the threads that are visible and permit to soak (Ref. AMM TASK 70-24-00-910-801).
(g) Use an applicable wrench to remove the bolt or stud and discard the broken bolt or stud.
(h) Solvent wipe clean the hole by SPOP 208 (Ref. AMM TASK 70-27-00-910-804).
(i) Tap the threads if necessary to clean or chase the threads.
(j) It is permitted to use
(k) Examine the threads for damage or an oversize condition. If there is thread damage or an oversize condition, refer to (Ref. AMM TASK 70-24-00-910-818).