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Komatsu D31A-17, D31Q-17, and D31S-17 specifications

Entries in this reference
Listing-entry count
3
Short answer

Komatsu D31A-17, D31Q-17, and D31S-17: crawler dozers.

Selected configuration figures
ConfigurationDocumented field and quantity
D31A-17
Gross Power
66 hp
Operating Weight
11,290 lb
D31Q-17
Net Power
66 hp
Operating Weight
15,430 lb
D31S-17
Net Power
66 hp
Operating Weight
14,771 lb
D31A-17, D31Q-17, and D31S-17 specification matrix — Listing labels reported by the source
Publisher nameSource guideListing-entry countLabels named by the source
KomatsuD31A-17, D31Q-17, and D31S-173D31A-17, D31Q-17, and D31S-17
Dimensions and weight
SpecificationD31A-17
Width Over Tracks6.07 ft
Length Of Track On Ground6.17 ft
Length W/O Blade9.31 ft
SpecificationD31A-17D31Q-17D31S-17
Height To Top Of Cab8.81 ft8.88 ft8.72 ft
SpecificationD31Q-17D31S-17
Length With Bucket On Ground13.28 ft13.6 ft
Width To Outside Of Tracks7.39 ft5.88 ft
Clearance At Full Height And Dump8.67 ft8.34 ft
Reach At Dump Height2.47 ft2.73 ft
Undercarriage
SpecificationD31A-17D31Q-17D31S-17
Track Gauge4.76 ft64.97 in57.09 in
Number Of Track Rollers Per Side555
Ground Pressure5.83 psi4.41 psi7.68 psi
SpecificationD31A-17
Standard Shoe Size13 in
SpecificationD31Q-17D31S-17
Length Of Track On Ground6.17 ft6.17 ft
Track Shoe Width23.63 in13 in
Engine
SpecificationD31A-17D31Q-17D31S-17
Engine Model4D105-54D105-54D105-5
Displacement264 cu in264 cu in264 cu in
SpecificationD31A-17
Gross Power66 hp
SpecificationD31Q-17D31S-17
Net Power66 hp66 hp
Operational
SpecificationD31A-17D31Q-17D31S-17
Operating Weight11,290 lb15,430 lb14,771 lb
Fuel Capacity30.4 gal30.4 gal30.4 gal
Cooling System Fluid Capacity5.9 gal5.9 gal5.9 gal
SpecificationD31Q-17D31S-17
Static Tipping Load9,770 lb9,390 lb
Breakout Force - Std Bucket14,990 lb14,110 lb
Bucket Capacity - Heaped1.1 yd31.1 yd3
Max Speed4.1 mph4.1 mph
Transmission and speeds
SpecificationD31A-17
Transmission Typeplanetary gear
Number Of Forward Gears3
Number Of Reverse Gears3
Max Speed - Forward4.1 mph
Max Speed - Reverse4.5 mph
Standard Blade
SpecificationD31A-17
Blade width8 ft
Blade height29.4 in
Cutting Depth14.6 in
Variants — Source comparison annotation
Source guideDiffering-field count reported
D31A-17, D31Q-17, and D31S-1728
Ratios
FigureD31A-17D31Q-17D31S-17
Engine horsepower per 1,000 lb of weight5.84.34.5
Fuel tank per engine horsepower0.46 gal0.46 gal0.46 gal

D31A-17, D31Q-17, and D31S-17: owner reports

Sources: 3 forum discussions about the Komatsu D31 dozers (D31A, D31P); heavyequipmentforums.com.
D31A-17, D31Q-17, and D31S-17: forum references — Forum-title search
Forum indexEquipment class queriedNames in the searchMatching titles
Heavy Equipment Forumscrawler dozerKomatsu and the D31Q line that the D31A-17, D31Q-17, D31S-17 belongs to (no title names the exact model)18
Topics named by those titles
Title topicTitles
transmission and drive3
brakes and steering3
Topic in the titleThreadsShare of matching threads
transmission and drive317%
brakes and steering317%
Used market for the D31A-17, D31Q-17, and D31S-17 — Dated first-page listing snapshot
Observation dateListing sourceEquipment searchListings
2026-09-24MachineryTraderKomatsu crawler dozer1
ModelListedModel yearsLowest askingHighest askingMedian askingMedian hours
D31A-1711984$13,500$13,500$13,500None shown
D31A-17, D31Q-17, and D31S-17: recall reference — Dated CPSC search
Search dateDatabaseNames queriedSearch result
2026-09-24U.S. Consumer Product Safety CommissionKomatsu together with the crawler dozer D31A-17, D31Q-17, D31S-17No matching recall in this search

Sources for this page

Evidence classDocument, classification and recorded date
Reference site
Reference site
Reference site
Forum threads
Forum threads
Used-market listings
Federal agency data

Komatsu D31A-17, D31Q-17, and D31S-17: Configuration records

D31A-17
SpecificationSource figure
Dimensions and weight
Width Over Tracks6.07 ft
Length W/O Blade9.31 ft
Height To Top Of Cab8.81 ft
Undercarriage
Track Gauge4.76 ft
Standard Shoe Size13 in
Number Of Track Rollers Per Side5
Ground Pressure5.83 psi
Engine
Engine Model4D105-5
Gross Power66 hp
Displacement264 cu in
Operational
Operating Weight11,290 lb
Fuel Capacity30.4 gal
Cooling System Fluid Capacity5.9 gal
Transmission and speeds
Transmission Typeplanetary gear
Number Of Forward Gears3
Number Of Reverse Gears3
Max Speed - Forward4.1 mph
Max Speed - Reverse4.5 mph
Standard Blade
Blade width8 ft
Blade height29.4 in
Cutting Depth14.6 in
Additional specifications
Length Of Track On Ground6.17 ft

Source

D31Q-17
SpecificationSource figure
Dimensions and weight
Height To Top Of Cab8.88 ft
Length With Bucket On Ground13.28 ft
Width To Outside Of Tracks7.39 ft
Clearance At Full Height And Dump8.67 ft
Reach At Dump Height2.47 ft
Undercarriage
Track Gauge64.97 in
Number Of Track Rollers Per Side5
Ground Pressure4.41 psi
Track Shoe Width23.63 in
Engine
Engine Model4D105-5
Displacement264 cu in
Net Power66 hp
Operational
Operating Weight15,430 lb
Fuel Capacity30.4 gal
Cooling System Fluid Capacity5.9 gal
Static Tipping Load9,770 lb
Breakout Force - Std Bucket14,990 lb
Bucket Capacity - Heaped1.1 yd3
Max Speed4.1 mph
Additional specifications
Length Of Track On Ground6.17 ft

Source

D31S-17
SpecificationSource figure
Dimensions and weight
Height To Top Of Cab8.72 ft
Length With Bucket On Ground13.6 ft
Width To Outside Of Tracks5.88 ft
Clearance At Full Height And Dump8.34 ft
Reach At Dump Height2.73 ft
Undercarriage
Track Gauge57.09 in
Number Of Track Rollers Per Side5
Ground Pressure7.68 psi
Track Shoe Width13 in
Engine
Engine Model4D105-5
Displacement264 cu in
Net Power66 hp
Operational
Operating Weight14,771 lb
Fuel Capacity30.4 gal
Cooling System Fluid Capacity5.9 gal
Static Tipping Load9,390 lb
Breakout Force - Std Bucket14,110 lb
Bucket Capacity - Heaped1.1 yd3
Max Speed4.1 mph
Additional specifications
Length Of Track On Ground6.17 ft

Source

Compare Komatsu D31A-17, D31Q-17, D31S-17
Dimensions and weight
SpecificationD31A-17D31Q-17D31S-17
Height To Top Of Cab8.81 ft8.88 ft8.72 ft
Undercarriage
SpecificationD31A-17D31Q-17D31S-17
Track Gauge4.76 ft64.97 in57.09 in
Number Of Track Rollers Per Side555
Ground Pressure5.83 psi4.41 psi7.68 psi
Engine
SpecificationD31A-17D31Q-17D31S-17
Engine Model4D105-54D105-54D105-5
Displacement264 cu in264 cu in264 cu in
Operational
SpecificationD31A-17D31Q-17D31S-17
Operating Weight11,290 lb15,430 lb14,771 lb
Fuel Capacity30.4 gal30.4 gal30.4 gal
Cooling System Fluid Capacity5.9 gal5.9 gal5.9 gal

More in Komatsu: D31E/S/Q-20: blade/shovel/serial differences, D31A-16–D37P-5, D31 variants: engine/blade/control identification.