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Caterpillar D7C

Production years: 1955–1958

Compare with other modelsValue machine
Engine horsepower
128 HP
—
Displacement
13.6 L
4-cylinder engine
Drive and chassis
Tracks (Crawler)
Gear (5F/4R)
Operating weight
11,779 kg
25,970 lbs

Sources and field evidence

Catalog Archive: Baseline specifications compiled from historical manufacturer archives and equipment registries. Laboratory test report verification in progress.

Caterpillar D7C
VLM Verified Authentic
Caterpillar D7C

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Engineering & Capability Benchmark

Specific output, tractive ratio, and segment percentile

Utility & Farmyard Workhorse
Global Tractor Fleet Power SpectrumTop 56% of all indexed machinery
Compact (20 HP)Utility (100 HP)Row-Crop (250 HP)Titans (600+ HP)
Specific Output
9.4 HP/L
Aspiration: Unknown
Traction Ratio
92.0 kg/HP
Heavy ballast for draft pull
PTO Efficiency
—
Mechanical driveline
Hydraulic Flow
Standard
Auxiliary implement ports

Engine and power specifications

Engine model
Caterpillar D339
Fuel type
Diesel
Rated horsepower
128 hp
Rated PTO Power
N/A (Caterpillar specification)
Drawbar Power @ Rated Engine Speed
103.65 hp (Nebraska OECD Test 2218)
Cylinders
4
Displacement
13.6 L (831 ci)
Bore / stroke
5.75x8.00 inches 146 x 203 mm
Rated RPM
1200 RPM
Crankcase oil capacity
22 qts (~20.8 L)
Coolant capacity
68 qts (~64.3 L)

Maintenance picks for the D7C

Oil capacity 22 qts — match the filter before you drain.

Transmission and chassis specifications

Transmission type
Gear (5F/4R)
Gears (forward / reverse)
5 forward / 4 reverse
Drive system
Tracks (Crawler)
Wheelbase
N/A
Front tire
N/A
Rear tire
N/A
Hydraulic flow
N/A
Rear hitch
N/A
ASABE EP496 Engineering Matcher

Implement Draft & Ballast Matcher

Simulate draft resistance, drawbar power transfer, and optimal axle weight distribution for Caterpillar D7C.

High Draft Working Zone(98%)
CAD DRAFT SCHEMATIC • Wide-Span Field Cultivator
SOIL: Medium Tilled LoamDEPTH: 4"SPEED: 7 MPH98% LOAD
SOIL SURFACE (0.0")SUB-SURFACE PLOW PAN (~14")128 HP◄ 5,563 LBS DRAFT4" DEPTH
DRAWBAR DEMAND: 103.8 HPWIDTH / SIZE: 32 ft Width
ASABE D497.7 Tillage Specific Resistance Formula
Implement Size (ft Width)32 ft Width
18 ft WidthDefault: 4270 ft Width
Tillage / Seeding Depth4 inches (10 cm)
2"Target: 4"6"
Target Operating Field Speed7.0 mph (11.3 km/h)
5 mphRated: 7 mph9 mph
Engine Power Demand vs Rated Output125.1 HP / 128 HP Rated
0%55% (Min Load)60-85% (Sweet Spot)100% (Cap)
Draft Force
5,563 lbs
Drawbar Power
103.8 HP
Target Slip
8% - 12%
Axle Ballast Balance (Twin Track Rubber Belt )Calibrated for Wide-Span Field Cultivator (100 lbs/HP standard)
Target: 12,800 lbs
Front Axle: 62%Rear Axle: 38%
3,600 kg (7,936 lbs)2,206 kg (4,864 lbs)
Ballast Adjustment vs Base:-13,170 lbs (-5,974 kg)
Hourly Diesel Burn
5.5 gal/h
20.8 L/hr (est. $21/h)
Hydraulic Fan Status
Standard Draw
No fan req

Optimal engine load (98%). Tractive efficiency is peaked within standard 8% - 12% slip window.

Tractor exceeds target ballast by 5974 kg. Consider removing wheel weights to reduce soil compaction.

Instant Used Market Valuation Projector

Algorithmic resale estimate for Caterpillar D7C (1955)

Full Appraisal Tool
Operating Meter Hours3,200 hrs
Mechanical & Physical Condition
Empirical model calibrated against dealer & auction lots
Estimated Fair Market Value
$5,769
Basis: 128 HP • 71 yrs old
Auction / Wholesale
$4,731 – $5,307
Dealer Retail Asking
$6,057 – $6,807
3-Year Projected Resale Curve~5% annual retention decay
Year 2027
$5,481
Year 2028
$5,207
Year 2029
$4,946

Direct Segment Rivals & Showdowns

Head-to-head match-ups calibrated by horsepower and era

Allis Chalmers+15 HP
HD19
143 HP
Wagner-8 HP
TR-9
120 HP
Steiger-10 HP
105
118 HP

Looking for a used Caterpillar D7C?

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Caterpillar

USA • 49 Models

Caterpillar Inc., commonly known as CAT, is a globally dominant American manufacturer of heavy machinery and industrial equipment. Founded in 1925 through the merger of Holt Manufacturing Company and C.L. Best Tractor Co., Caterpillar quickly established itself as a pioneer in tracked machinery and diesel engine technology. The company's early innovations in crawler tractors revolutionized construction and earthmoving industries, setting the stage for its future dominance. While Caterpillar's primary focus has been on construction, mining, and heavy industrial equipment, the company has also made significant contributions to agriculture. In 1987, Caterpillar re-entered the agricultural market with the introduction innovative Challenger line of rubber-tracked crawlers, which represented a major technological advancement in farm machinery. However, in 2002, Caterpillar made the strategic decision to sell its agricultural division, including the Challenger line, to AGCO, allowing it to concentrate on its core construction and mining equipment business. Today, Caterpillar is recognized as the world's leading manufacturer of construction and mining equipment, with a vast product portfolio that includes engines, industrial turbines, and heavy machinery. The company's commitment to innovation, quality, and global reach is supported by the largest dealer network in the industry, ensuring that Caterpillar equipment is available and supported worldwide. Despite its reduced presence in agriculture, Caterpillar's legacy in the farm equipment sector remains significant, particularly through the technological advancements introduced by the Challenger line.

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