The Caterpillar 225B hydraulic excavator was introduced in the USA in 1986. Production began in Belgium a year later. It replaced the Caterpillar 225.

[edit] Features

Like its predecessor, the 225B has two different engine configurations: the American unit has a Cat 3208 engine while the Belgian unit has a 3304 engine. Both produce 145 flywheel horsepower (FWHP).

The 225B was manufactured in the USA, with a 2ZD serial number prefix, and in Belgium, with a 3YD prefix.

The 3YD has increased implement, travel, and heavy lift pressures, larger boom cylinders, a reinforced boom stick, new track links and shoes, and larger shoe bolts and track roller bolts.

[edit] Modifications

In 1986 Caterpillar added a new sound-suppressed cab, beginning with 2ZD00338.

In 1987 Cat added larger boom cylinders, a heavier counterweight, new rack lines shoes, a reinforced boom and stick, and increased travel, implement, and heavy lift pressure on the American unit, beginning with 2ZD00550.

In 1988 a better sealing for the travel pilot valve was added, beginning with 2ZD01140. Hydraulic pressure was increased, beginning with 2ZD01152.

Production of 225B ended in 1989; it was replace by the Caterpillar 225D.

Based on data from the sales database of Ritchie Bros. Auctioneers, it is estimated that more than 4,000 Caterpillar 225B hydraulic excavators have been produced.

Highest Serial #

Belgium
3YD	02113
USA
2ZD	01915
Total = 4,028