Pistons and Connecting Rods

TM 9-2320-312-24-2

Truck Engine

Disassembly and Assembly Section

Guideline For Reusable Parts And Salvage

i01459773

Operations, SEBF8242, "Verification of Connecting

Pistons and Connecting Rods

Rod Eye Bushing Retention Using 5P-8639

- Install

Connecting Rod Bushing Press Group"

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SMCS Code: 1225-012

Operations, SEBF8274, "Using Rod Eye Bushing

Installation and Removal Tools"

Installation Procedure

Table 41

Required Tools

Part

Tool

Part Description

Qty

Number

173-5529

Piston Ring Compressor

NOTICE

Keep all parts clean from contaminants.

Contaminants may cause rapid wear and shortened

component life.

g00678193

Illustration 220

Note: For information on reusability of the pistons,

1. Install the bolts (5) and the upper half of

refer to the following list.

connecting rod bearing (4). Ensure that the

bearing tab engages with the slot in connecting

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rod (3).

Operations, SEBF8049, "Pistons"

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Operations, SEBF8290, "Visual Inspection of

Two-Piece Pistons"

Tool Operating Manual, NEHS0775, "Using the

186-0190 Piston Ring Gauge on Steel Crown,

Two-Piece Pistons used in 3126 and 3126B

Engines"

Note: For information on reusability of the connecting

rods, refer to the following list.

Guideline For Reusable Parts And Salvage

Operations, SEBF8063, "Visual Inspection of

g00678195

Illustration 221

Connecting Rods"

2. Install the lower half of connecting rod bearing

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(4). Ensure that the bearing tab engages with the

Operations, SEBF8064, "Salvage of Non-Serrated

slot in connecting rod cap (2).

Connecting Rods"

3. Place clean engine oil on the following items: the

Note: For information on reusability of the piston

pistons, the piston rings, the cylinder bore, the

pins, refer to the following list.

upper half of the connecting rod bearing, and

the lower half of the connecting rod bearing.

Guideline For Reusable Parts And Salvage

Operations, SEBF8051, "Piston Pins and Retaining

NOTICE

Rings"

Install short pieces of rubber hose over both connect-

ing rod bolts in order to protect the crankshaft from the

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threaded portion of the connecting rod bolts.

Operations, SEBF8303, "Procedure to Inspect

Piston Pins"

Note: For information on reusability of the rod eye

bushing, refer to the following list.