Cat Pistons, Rings,
Liners, and Rods
®
Built to meet your engine’s demands
Caterpillar. The difference counts.™
Pistons, rings, liners, and rods form the heart of your engine, controlling the combustion
process and transferring mechanical energy to the crankshaft. To protect your engine from
harsh conditions, Cat® Pistons, Rings, Liners, and Rods are:
Cat® Dealers define world-class product
• designed to work and wear as a system in your Cat engine for smooth, efficient operation
and long life.
support. We offer you the right parts
and service solutions, when and where
you need them.
• manufactured and tested to close tolerances to ensure top engine performance.
The Cat Dealer network of highly
• heat treated to deliver strength and durability during engine operation.
trained experts keeps your entire fleet
Quality materials and controlled manufacturing processes also means Cat Piston crowns and
connecting rods can be remanufactured for a second life. Cat Reman Cylinder Packs offer
same-as-new performance, long life, and quick turnaround—all at fraction-of-new prices.
up and running to maximize your
equipment investment.
Cat Pistons, Rings, Liners, and Rods
Quality materials and controlled processes ensure top performance and long life
New Caterpillar ® Pistons, Rings, Liners, and Rods are designed and
manufactured using quality materials and controlled processes for
maximum performance and durability.
One Piece Pistons • Improved structural capability of the
single piece forged steel piston
simplifies assembly and eliminates
the number of parts.
Cat Rings
• Proper surface finish provides smooth
operation and long wear life.
• New oil jet with higher oil velocity
provides more concentrated cooling.
• Barrel-faced top ring maintains the proper
oil film thickness on the cylinder liner for
reduced liner damage and oil consumption.
• Reduces thermal expansion and
allows piston fit to be tighter for a
reduction in cavitation.
• Durable heat-treated ductile iron construction
resists breaking and impact loading.
• Reduction in surface area provides
less friction and helps improve fuel
consumption.
Two Piece Piston
Cat Liners
• Precise plasma or chrome plating guarantees
exceptionally long wear life.
• Precise fit with grooves ensures proper oil
control and sealing between the crankcase and
combustion chamber for efficient operation,
long wear life and reduced blow-by.
• Two piece “articulted” design for
reduced piston slap, better combustion
and reduced emissions due to rings
located closer to the top of the piston.
• Steel crown for heat resistance, and
higher cylinder pressure.
• Aluminum skirt for weight reduction.
Chrome
Ceramic Ring
• Coating of several layers of hard chromium
for higher scuffing resistance.
• A network of tiny micro-cracks on each layer
for better thermal fatique properties.
• Ceramic particles embedded into each layer
of chrome improves consistancy properties
over the entire coating depth.
• Normal chromium wear exposes new ceramic particles resulting in less surface cracking/ring flaking, reduced wear of both ring
and cylinder bore, significant life improvement, and better spalling resistance.
• Inside surfaces feature a uniform cross hatch
pattern for faster ring seating, proper ring
seal, uniform oil distribution, and long life.
Fractured Rod
• Perfectly matched joint surfaces allow rods to
accept higher loads.
• Fractured uneven surface helps locate rod end
and cap, eliminating the need for locating
dowel.
• Automatic bolt insertion and fastening
equipment ensures cap and rod stay together,
eliminating possibility of mismatched cap and
rod during material handling.
• Flanges are roll burnished in the radius for
increased strength and resistance to cracking.
• Heat-treated high-grade gray iron construction
provides exceptional strength and long life.
• Controlled flange head thickness guarantees a
precise match with the block and head.
• Precise manufacturing tolerances ensure
perfectly round bores for efficient oil control
and proper fit in Cat engine blocks.
Cat® Pistons, Rings, and Liners
vs. Competitive Parts
Caterpillar randomly tests competitive
parts to determine quality differences.
These comparisons consistently reveal
the following shortcomings about
competitive pistons, rings, and liners.
Competitive pistons
• Imprecise fit can cause liner scuffing
and piston seizure.
Reman Cylinder Packs reduce downtime and costs
Remanufacturing transforms used Cat
components to new parts standards. When you
need repairs, Cat Reman Cylinder Packs will get
you back to work quickly, reliably, and
affordably. Completely remanufactured to
include all critical engineering updates and
design improvements, Cat Reman Cylinder
Packs provide same-as-new performance and
long life.
Strict remanufacturing processes
• Partially disbonded ring bands and
out-of-spec ring grooves can cause
blowby and cylinder damage.
• New articulated piston bushings are installed
using correct installation methods to ensure
retention of bushing in bore.
Competitive rings
• New liners and rings are installed for exact
fit and smooth operation.
• Thin chrome plating can reduce
wear life.
• Soft, gray iron construction can
reduce durability and lead to failure.
Competitive liners
• Lack of heat treating and roll
burnishing can lead to flange cracks
and breaks.
• Random cross hatch pattern can result
in poor oil control and increased oil
consumption.
Cat liners
plateau bored for proper mating
of piston rings and liner, better
oil control and long life
Competitive liners
non-plateau bored requires
breaking in producng wear and
delays proper oil control
• All components are extensively tested
and inspected for conformance to factory
specifications.
Fast, easy installation
Cat Reman Cylinder Packs contain the cylinder
liner, piston, rings, pin, retainers, connecting
rod, and all necessary seals. They come
preassembled and ready for installation as a
unit, reducing your turn-around time.
Plus, our special tooling and repair technique
can save up to an hour per cylinder during
installation, so it’s possible to complete an
entire in-frame overhaul in one day. No other
engine manufacturer offers this kind of service.
Fully warranted, low-cost repair
options
Cat Reman Cylinder Packs are priced at 45-50%
of the cost of new parts and offer the same
factory-fresh performance. To prove it,
Caterpillar backs Reman Cylinder Packs
with a same-as-new parts warranty.
Strict remanufacturing processes ensure
Cat Reman Cylinder Packs deliver same-as-new
performance and long life.
Cat Pistons, Rings, Liners, and Rods
Comprehensive service and support
When your engine needs service, our professional technicians have the training and tools to get
you back to work quickly. We provide off-the-shelf component
availability backed by Caterpillar’s worldwide parts network.
Give us a call or drop by our parts counter. We’ll show you how we can help lower your costs
with the highest quality engine parts, a wide range of Cat Reman components, and the most
comprehensive service and support available.
Quality materials and controlled
manufacturing processes ensure Cat
Pistons, Rings, Liners, Rods, and
Reman Cylinder Packs deliver top
performance and long life.
For more information,
see us today.
PEHP7039-02
www.cat.com
Printed in USA
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