Pistons and Connecting Rods

TM 9-2320-312-24-2

Truck Engine

Disassembly and Assembly Section

Guideline For Reusable Parts And Salvage

Operations, SEBF8303, "Procedure to Inspect

Piston Pins"

Note: For information on reusability of the rod eye

bushing, refer to the following list.

Guideline For Reusable Parts And Salvage

Operations, SEBF8242, "Verification of Connecting

Rod Eye Bushing Retention Using 5P-8639

Connecting Rod Bushing Press Group"

Guideline For Reusable Parts And Salvage

Operations, SEBF8274, "Using Rod Eye Bushing

Installation and Removal Tools"

g00610272

Illustration 213

3. Remove the lower half of bearing (4) from

connecting rod cap (2).

4. Push the piston and connecting rod away

from the crankshaft. Remove the upper half of

connecting rod bearing (4) from connecting rod

(3).

5. Remove the piston and connecting rod (3) from

the cylinder block.

6. Repeat Steps 1 through 5 for the remaining

pistons and connecting rods.

g00610269

Illustration 212

i01336888

1. Inspect the connecting rod and connecting

Pistons and Connecting Rods

rod cap (2) for the proper identification mark.

The connecting rod and connecting rod cap

- Disassemble

(2) should have an etched number on the side

that is toward the right side of the engine. The

SMCS Code: 1225-015

number should match the cylinder number. Mark

the connecting rod and connecting rod cap (2),

if necessary.

Disassembly Procedure

2. Remove connecting rod cap nuts (1), bolts (5),

Table 39

and connecting rod cap (2).

Required Tools

Part

NOTICE

Tool

Part Description

Qty

Number

Install short pieces of rubber hose over both connect-

ing rod bolts in order to protect the crankshaft from the

1U-6683

Piston Ring Expander

threaded portion of the connecting rod bolts.

1P-1861

Retaining Ring Pliers

Start By:

a. Remove the pistons and the connecting rods.

Refer to Disassembly and Assembly, "Pistons

and Connecting Rods - Remove".