Service Repair Manual
Model
235 EXCAVATOR
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Product: EXCAVATOR
Model: 235 EXCAVATOR 64R
Configuration: 235 EXCAVATOR 64R01258-UP (MACHINE) POWERED BY 3306 ENGINE
Disassembly and Assembly
3304B and 3306B Engines for Caterpillar Built Machines
Media Number -SENR5598-09
Publication Date -01/01/2013
Date Updated -25/01/2013
i00977166
Pistons and Connecting Rods - Disassemble
SMCS - 1225-015
Disassembly Procedure
Table 1
Required Tools
Tool
Part Number
Part Description
Qty
A
7S-9470
Piston Ring Expander
1
B
5P-8639
Press Group
1
5P-8645
Adapter
1
6V-3029
Spacer
1
6V-2049
Adapter
1
1U-5230
Hand Hydraulic Pump
1
8F-0024
Hose
1
1P-2375
Connecting Coupler
1
1P-2376
Connecting Coupler
1
Start By:
A. Remove the pistons and connecting rods. Refer to Disassembly and Assembly, "Pistons and
Connecting Rods - Remove".
NOTICE
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Keep all parts clean from contaminants.
Contaminants may cause rapid wear and shortened component life.
Illustration 1
g00484932
1. Remove the piston rings from the pistons with Tool (A) .
Illustration 2
g00484980
2. Remove retaining ring (3), piston pin (1) and connecting rod (2) .
3. Remove the connecting rod bearing.
4. Heat the connecting rod in an oven to a temperature of 176 to 260 °C (350 to 500 °F). Do
not use a direct flame to heat a connecting rod.
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Illustration 3
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Hot oil and hot components can cause personal injury. Do not allow hot
oil or hot components to contact the skin.
5. Put 6V-3029 Spacer (11) into the base plate. Put the connecting rod on the base plate of
Tool (B) .
6. Put the connecting rod piston pin bearing end in the center of the po