Installation of the Packings and Seals [PW11]

TASK 70-24-00-910-808-A
Installation of the Packings and Seals

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

1. Reason for the Job
This procedure gives the necessary lubricant instructions and procedures for the installation of packings and seals.

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

2. Job Set-up Information
A. Consumable Materials

REFERENCE	DESIGNATION
(Material No.P03-001)	lubricant, aircraft turbine engine
(Material No.P06-002)	Petrolatum
(Material No.P06-053)	Sealing Ring Lubricant

3. Job Set-up
Subtask 70-24-00-860-057-A ** ON A/C NOT FOR ALL

A. Not Applicable

4. Procedure

NOTE: Preformed rubber O-ring packings are referred to as packings.

Subtask 70-24-00-911-052-A ** ON A/C NOT FOR ALL

A. Necessary Lubricant Instructions

CAUTION: PUT A THIN FILM OF LUBRICANT ON RUBBER PREFORMED PACKINGS BEFORE INSTALLATION. LUBRICATION, AND CORRECT ASSEMBLY, WILL PREVENT PREFORMED PACKING DAMAGE THAT CAN CAUSE AN ENGINE MALFUNCTION OR FAILURE.

CAUTION: DO NOT APPLY PETROLATUM TO PACKINGS USED IN FUEL OR OIL SYSTEMS. PETROLATUM DOES NOT DISSOLVE EASILY IN FUEL OR OIL AND CAN CAUSE BLOCKAGES IN SMALL PASSAGES AND CLOGGED FILTERS. CORRECT LUBRICATION AND ASSEMBLY WILL PREVENT DAMAGE TO THE PACKING THAT CAN CAUSE ENGINE DAMAGE OR A SHUTDOWN.

(1) Apply the correct lubricant to each packing before engine assembly as follows:
(a) Find the material specification of the packing. This is often shown on the package.
(b) Determine the type of system (fuel, oil or air) where the packing will be installed.
(c) Refer to Table 1 and select the necessary lubricant.
(d) Apply the necessary lubricant to each packing.

NOTE: Use only the lubricants specified for the packing material.

1 Table 1 - Packing Lubricant

Engine System	Packing Material	Material Specification	Lubrication Specification
Fuel	Fluorosilicone	AMS 7273	P03-001lubricant, aircraft turbine engine or Sealing Ring Lubricant (Material No.P06-053)
Oil or Fuel	Fluorocarbon	AMS 7276, AMS 7278, AMS 7280	P03-001lubricant, aircraft turbine engine or Sealing Ring Lubricant (Material No.P06-053)
Air or Water	Silicone	AMS 3301, AMS 3302, AMS 3303, AMS 3304, AMS 3305, AMS 3315, AMS 3320, AMS 3332, AMS 3334, AMS 3335, AMS 3336, AMS 3338, AMS 3345, AMS 3346, AMS 3356, AMS 3357, AMS 7267	Petrolatum (Material No.P06-002)

NOTE: Use only a small amount of White Petrolatum (Material No. P06-002) on silicone packings used in air systems. Hot air can move this lubricant into downstream components and cause contamination. Never use Engine Oil (PWA 521 P03-001) on silicone packings.

Subtask 70-24-00-910-057-A ** ON A/C NOT FOR ALL

B. Instructions for the Installation of Preformed Packings
(1) Always use new packings at each assembly.
(2) Check the package for a date unless otherwise specified (e.g. manufacture date). This date is called the shelf life.
(3) Do not use packings that have gone past the shelf life date.
(4) If there is no date on the package, there is no shelf life.
(5) Apply a layer of specified lubricant to the O-ring before assembly.

NOTE: Use only the lubricants specified for the O-ring preformed packing material and be sure that the O-ring has the lubricant material fully on it.

(6) Do a visual inspection of the O-ring mating surfaces and all other surfaces that the O-ring will touch during the installation. Be sure that there is no damage or sharp edges that could cause damage to the seal during the installation or that could cause a leak.
(7) Push or slide the packing into position. Do not twist or roll the packing when it is installed.
(8) Do not install packings on engine parts which are hot (hot parts will cause damage to a packing).

[Rev.10 from 2021] 2026.04.02 07:29:07 UTC