Chapter 3: Truck-Mounted Boom Pumps — What Matters¶

Anatomy of a Boom Pump Rig¶

A truck-mounted boom pump is two machines in one:

The chassis (truck) — drives the rig to the job site
The pump + boom assembly — the revenue-generating equipment mounted on the chassis

Both matter. A great pump on a broken truck makes zero dollars.

The Chassis: Why the Kenworth T880 Matters¶

The Kenworth T880 is a vocational workhorse — purpose-built for heavy-duty applications like concrete pumping.

Feature	T880 Specification	Why It Matters
Class	Class 8 heavy-duty	Built for the weight of a boom pump assembly (20,000–40,000 lbs)
Engine	PACCAR MX-13 (typically 455–510 HP)	Reliable power for highway transit and PTO-driven pump hydraulics
Frame	Heavy-gauge steel rails	Handles the torsional stress of boom deployment
Cab	Set-back axle, day cab	Optimized for vocational mounting, good visibility
GVWR	Up to 92,000 lbs	Accommodates full pump assembly + outriggers
Reputation	Industry standard for pump trucks	Operators and mechanics know it — fewer surprises

Kenworth T880 vs Competitors

The T880 competes with the Peterbilt 567, Mack Granite, and Western Star 4700. All are capable, but the T880 is arguably the most common chassis under boom pumps in North America. Customers will recognize it immediately.

The Pump: Key Specifications That Win or Lose Deals¶

Output (Cubic Yards per Hour)¶

Typical boom pump output: 80–200 cubic yards/hour
Higher output = faster pours = more revenue per shift
Ask: "What's your typical pour size?" — this tells you if the pump matches their work

Concrete Pressure (PSI)¶

Range: 800–1,500 PSI depending on model
Higher pressure needed for: long horizontal distances, high vertical lifts, stiff mixes
Decorative concrete and shotcrete require different pressure profiles

Boom Length and Configuration¶

Boom Class	Reach	Typical Use
28m–33m	Short	Residential, small commercial
36m–42m	Mid-range	Most commercial work, sweet spot
47m–52m	Long	Multi-story, infrastructure
56m+	Extra-long	High-rise, specialty

Boom configuration matters too:

Z-fold — compact folding, good for tight job sites
Roll-fold (RZ) — combines reach with compact storage
Multi-section — 4 or 5 sections for maximum flexibility

Hopper Size¶

The hopper receives concrete from the ready-mix truck
Larger hoppers (typically 0.5–1.0 cubic yard) = less waiting between trucks
Grate design matters — keeps rocks and debris out of the pump

Outriggers¶

Stabilize the truck during boom operation
Front and rear outrigger spread determines the footprint needed on-site
Customers care about: setup time, reach at partial deployment, ground pressure

Wear Parts: The Ongoing Cost Story¶

These parts wear out regularly and represent the biggest maintenance cost:

Wear Part	Replacement Interval	Approximate Cost
Wear plates	Every 10,000–20,000 cubic yards	$200–$600
Cutting ring	Every 10,000–20,000 cubic yards	$300–$800
S-tube or S-valve	Every 20,000–40,000 cubic yards	$1,500–$4,000
Delivery pipe/hose	Varies by abrasion	$50–$300 per section
Piston cups	Every 15,000–30,000 cubic yards	$200–$500

Key Selling Point

When a customer asks about total cost of ownership, wear parts are the conversation. Concord's simpler design and North American parts availability can mean 20–30% lower wear part costs vs. European manufacturers.

What to Inspect on a Used Boom Pump¶

If a customer asks about the condition of your 2017 rig, know these inspection points:

Boom pins and bushings — worn pins = sloppy boom movement = safety concern
Hydraulic cylinders — check for leaks, scoring on rods
Pump cylinders — bore wear, piston condition
Outrigger pads and cylinders — cracks, leaks, wear
Pipeline and clamps — wall thickness, clamp condition
Hopper and agitator — wear on paddles, hopper walls
Hour meter — pumping hours tell the real story (not odometer miles)
Chassis — standard CDL truck inspection points