Unit Injector - Install

TM 9-2320-312-24-2

Truck Engine

Disassembly and Assembly Section

2. Twist the 9U-6862 Tapered Brush with the

4C-5027 Tap Wrench against the lower surface

of the sleeve bore.

3. The surface should be cleaned until the surface

is smooth and shiny. The entire sleeve bore

should be cleaned in order to remove any loose

carbon particles.

Note: A 4C-6774 Vacuum Gun Kit is available in

order to clean the loose material from the sleeve

bore.

Evacuation Of Fuel And Oil From The

Cylinder

Evacuate as much fuel and oil as possible from

the cylinder before installation of the injector. Use

the 1U-5718 Vacuum Pump, 1U-5814 Bottle

Assembly, and the 4C-4057 Tube to evacuate the

fuel. Several evacuations may be necessary.

g00777907

Illustration 24

1. Install oil drain plugs (8).

i01501732

Unit Injector - Install

SMCS Code: 1290-012

Installation Procedure

Table 5

Required Tools

Part

Tool

Part Description

Qty

Number

149-2955

Seal Protector

149-2956

Seal Installer

g00779451

Illustration 25

152-1057

Fuel Injector Installer

2. Install Injection Actuation Pressure Sensor (9).

NOTICE

Keep all parts clean from contaminants.

Contaminants may cause rapid wear and shortened

component life.

NOTICE

The correct procedures and tooling specifications

must always be used. Failure to follow any of the

procedures may result in damage, malfunction, or

possible engine failure.