Machine models

Komatsu D31PLL-20 and D31PLL-20E specifications

Entries in this reference
Listing-entry count
2

Short answer

Komatsu D31PLL-20 and D31PLL-20E: crawler dozers.

Selected configuration figures
Configuration	Documented field and quantity
D31PLL-20	Net Power 70 hp Operating Weight 16,998 lb
D31PLL-20E	Gross Power 71 hp Operating Weight 16,976 lb

D31PLL-20 and D31PLL-20E specification matrix — Listing labels reported by the source
Publisher name	Source guide	Listing-entry count	Labels named by the source
Komatsu	D31PLL-20 and D31PLL-20E	2	D31PLL-20 and D31PLL-20E

Undercarriage
Specification	D31PLL-20	D31PLL-20E
Track Gauge	6.24 ft	6.24 ft
Standard Shoe Size	41.34 in	41.34 in
Number Of Track Rollers Per Side	8	8

Specification	D31PLL-20
Ground Contact Area	8,365 in2
Ground Pressure	1.85 psi
Number Of Shoes Per Side	46

Specification	D31PLL-20E
Number Of Carrier Rollers Per Side	2
Track Pitch	6.07 in

Engine
Specification	D31PLL-20	D31PLL-20E
Number Of Cylinders	4	4
Engine Model	S4D102E	S4D102E-1-A
Power Measured @	2,350 rpm	2,350 rpm
Displacement	238 cu in	239.3 cu in

Specification	D31PLL-20
Net Power	70 hp
Aspiration	turbocharged

Specification	D31PLL-20E
Gross Power	71 hp

Operational
Specification	D31PLL-20	D31PLL-20E
Operating Weight	16,998 lb	16,976 lb

Specification	D31PLL-20
Fuel Capacity	30.4 gal
Cooling System Fluid Capacity	5.9 gal
Engine Oil Capacity	3.7 gal
Powertrain Fluid Capacity	3.5 gal
Final Drives Fluid Capacity	4 gal

Transmission and speeds
Specification	D31PLL-20	D31PLL-20E
Transmission Type	Hydroshift	HS
Number Of Forward Gears	3	3
Number Of Reverse Gears	3	3

Specification	D31PLL-20
Max Speed - Forward	4.1 mph
Max Speed - Reverse	4.5 mph

Hydraulic System
Specification	D31PLL-20
Pump Type	gear type
Relief Valve Pressure	2,495 psi

Dimensions and weight
Specification	D31PLL-20E
Length W/ Blade	14.11 ft
Width Over Tracks	9.68 ft
Height To Top Of Cab	8.98 ft
Length Of Track On Ground	8.44 ft
Ground Clearance	1.25 ft
Length W/O Blade	11.19 ft

Standard Blade
Specification	D31PLL-20E
Blade width	11.3 ft
Blade height	21.5 in

Variants — Source comparison annotation
Source guide	Differing-field count reported
D31PLL-20 and D31PLL-20E	29

Ratios
Figure	D31PLL-20	D31PLL-20E
Engine horsepower per 1,000 lb of weight	4.1	4.2

Figure	D31PLL-20
Fuel tank per engine horsepower	0.43 gal

D31PLL-20 and D31PLL-20E: owner reports

Related account: “Steering clutches and transmission on project machines”: D31A-17, D31Q-17, and D31S-17.

D31PLL-20 and D31PLL-20E: forum references — Forum-title search
Forum index	Equipment class queried	Names in the search	Matching titles
Heavy Equipment Forums	crawler dozer	Komatsu and the D31 line that the D31PLL-20, D31PLL-20E belongs to (no title names the exact model)	66

Topics named by those titles
Title topic	Titles
transmission and drive	8
brakes and steering	6
electrical and sensors	4

Topic in the title	Threads	Share of matching threads
transmission and drive	8	12%
brakes and steering	6	9%
electrical and sensors	4	6%
emissions	2	3%
starting and cranking	2	3%

Any Information On A Komatsu Winch Coupled To A Komatsu D31 Dozer Any Informationat All (Heavy Equipment Forums, 2026-08-23)
I Have A D 31 P Komatsu Does This Dozer Have A Transmission Screen That Needs To Be Cleaned Ever So Often (Heavy Equipment Forums, 2025-01-10)
Komatsu D31 P Dozer Only Powers One Track (Heavy Equipment Forums, 2024-10-04)
Komatsu D31 Pl18 Problems (Heavy Equipment Forums, 2024-09-08)

Used market for the D31PLL-20 and D31PLL-20E — Dated first-page listing snapshot
Observation date	Listing source	Equipment search	Listings
2026-09-24	MachineryTrader	Komatsu crawler dozer	1

Model	Listed	Model years	Lowest asking	Highest asking	Median asking	Median hours
D31PLL-20E	1	1997	$18,998	$18,998	$18,998	None shown

D31PLL-20 and D31PLL-20E: recall reference — Dated CPSC search
Search date	Database	Names queried	Search result
2026-09-24	U.S. Consumer Product Safety Commission	Komatsu together with the crawler dozer D31PLL-20, D31PLL-20E	No matching recall in this search

Sources for this page
Evidence class	Document, classification and recorded date
Reference site	Reference site: Komatsu D31PLL-20 — RitchieSpecs. Observed 2026-09-24.
Reference site	Reference site: Komatsu D31PLL-20E — RitchieSpecs. Observed 2026-09-24.
Forum threads	Forum threads: Heavy Equipment Forums thread index for Komatsu D31PLL-20 and D31PLL-20E — Heavy Equipment Forums. Observed 2026-09-24.
Used-market listings	Used-market listings: MachineryTrader listings for Komatsu D31PLL-20E — MachineryTrader. Observed 2026-09-24.
Federal agency data	Federal agency data: Recall database search for Komatsu — U.S. Consumer Product Safety Commission. Observed 2026-09-24.

Komatsu D31PLL-20 and D31PLL-20E: Configuration records

D31PLL-20

Specification	Source figure
Undercarriage
Track Gauge	6.24 ft
Standard Shoe Size	41.34 in
Number Of Track Rollers Per Side	8
Number Of Shoes Per Side	46
Ground Contact Area	8,365 in2
Ground Pressure	1.85 psi
Engine
Number Of Cylinders	4
Engine Model	S4D102E
Power Measured @	2,350 rpm
Displacement	238 cu in
Net Power	70 hp
Aspiration	turbocharged
Operational
Operating Weight	16,998 lb
Fuel Capacity	30.4 gal
Cooling System Fluid Capacity	5.9 gal
Engine Oil Capacity	3.7 gal
Powertrain Fluid Capacity	3.5 gal
Final Drives Fluid Capacity	4 gal
Transmission and speeds
Transmission Type	Hydroshift
Number Of Forward Gears	3
Number Of Reverse Gears	3
Max Speed - Forward	4.1 mph
Max Speed - Reverse	4.5 mph
Hydraulic System
Pump Type	gear type
Relief Valve Pressure	2,495 psi

Source

D31PLL-20E

Specification	Source figure
Dimensions and weight
Length W/ Blade	14.11 ft
Width Over Tracks	9.68 ft
Height To Top Of Cab	8.98 ft
Length Of Track On Ground	8.44 ft
Ground Clearance	1.25 ft
Length W/O Blade	11.19 ft
Undercarriage
Track Gauge	6.24 ft
Standard Shoe Size	41.34 in
Number Of Track Rollers Per Side	8
Track Pitch	6.07 in
Number Of Carrier Rollers Per Side	2
Engine
Number Of Cylinders	4
Engine Model	S4D102E-1-A
Gross Power	71 hp
Power Measured @	2,350 rpm
Displacement	239.3 cu in
Operational
Operating Weight	16,976 lb
Transmission and speeds
Transmission Type	HS
Number Of Forward Gears	3
Number Of Reverse Gears	3
Standard Blade
Blade width	11.3 ft
Blade height	21.5 in

Source

Compare Komatsu D31PLL-20, D31PLL-20E

Undercarriage
Specification	D31PLL-20	D31PLL-20E
Track Gauge	6.24 ft	6.24 ft
Standard Shoe Size	41.34 in	41.34 in
Number Of Track Rollers Per Side	8	8

Engine
Specification	D31PLL-20	D31PLL-20E
Number Of Cylinders	4	4
Engine Model	S4D102E	S4D102E-1-A
Power Measured @	2,350 rpm	2,350 rpm
Displacement	238 cu in	239.3 cu in

Operational
Specification	D31PLL-20	D31PLL-20E
Operating Weight	16,998 lb	16,976 lb

Transmission and speeds
Specification	D31PLL-20	D31PLL-20E
Transmission Type	Hydroshift	HS
Number Of Forward Gears	3	3
Number Of Reverse Gears	3	3

More in Komatsu: D32E-1/D32P-1, D31 variants: engine/blade/control identification, D31EX-21 KOMSTAT II–D39PXI-23 specs.

Komatsu D31PLL-20 and D31PLL-20E specifications

D31PLL-20 and D31PLL-20E: owner reports

Sources for this page

Komatsu D31PLL-20 and D31PLL-20E: Configuration records