PWA 316 - Cotter Pin Installation [PW11]

TASK 70-24-00-910-809-A
PWA 316 - Cotter Pin Installation

WARNING: BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.

NOTE: Always obey the specific procedures and limits in the specific maintenance manual maintenance tasks.

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

REFERENCE	DESIGNATION
Cotter Pins

3. Job Set-up
Subtask 70-24-00-860-050-A ** ON A/C NOT FOR ALL

A. Not Applicable

4. Procedure
Subtask 70-24-00-910-050-A ** ON A/C NOT FOR ALL

A. Installation of the Cotter Pin
(1) Use cotter pins only one time. Use a new cotter pin for each installation.
(2) Use the correct cotter pin as specified by the AMM task.
(3) Procedure
(a) Install a cotter pin to safety a nut as follows:
1 Torque the fastener to the minimum torque limit as specified by the maintenance manual task.
2 If the cotter pin hole does not align with the slot, continue to torque the fastener to the maximum torque as specified by the maintenance manual task but only enough for alignment.
3 If you cannot get the alignment with the fastener torqued within the specified limits, replace the fastener with a different one.
4 Continue to torque the fastener to the torque specified by the maintenance manual task for alignment.
5 Make sure that more than 50 percent of the pin hole is below the top edge of the nut.
6 Install the cotter pin as follows:
a Install and align the cotter pin so that you can bend the prongs up and over the bolt and down over the nut.
b While you hold the head tight to the hole, bend the prongs so that the upper prong is tight on the end of the bolt and the bottom prong is tight on the side of the nut.

NOTE: Do not bend the cotter pin head.

c If necessary, cut off the end of the upper prong to be level with the end of the bolt.
d If necessary, cut off the end of the lower prong for a tight fit on the nut.
(b) Install a cotter pin to safety a pin, rod or collar as follows:
1 Install the cotter pin as follows:
a Install and align the cotter pin so that you can bend the prongs around the outside diameter of the pin, rod or collar.
b While you hold the head tight to the hole, bend the prongs against the outside diameter of the pin, rod or collar.

NOTE: Do not bend the cotter pin head.

c If necessary, cut off the end of the prongs to get the correct length.
(c) Examine the installed cotter pin as follows:
1 Make sure that a new cotter pin was installed.
2 Make sure that the prongs are bent as previously specified.
3 Make sure that the prongs are bent so that the cotter pin and fastener cannot move or turn to loosen.
4 Scoring, gouging and smearing of the cotter pin or adjacent parts are not permitted.
5 Small tool marks from usual forming and bending procedures are permitted.

[Rev.10 from 2021] 2026.04.02 06:31:42 UTC