Machine models

Cat 931 to 931C Series II specifications

Entries in this reference
Listing-entry count
5

Short answer

Cat 931 to 931C Series II: track loaders.

Selected configuration figures
Configuration	Documented field and quantity
931	Net Power 62 hp Operating Weight 15,212 lb
931 LGP	Net Power 62 hp Operating Weight 17,141 lb
931B	Net Power 64.4 hp Operating Weight 15,331 lb
931B LGP	Net Power 64.4 hp Operating Weight 18,398 lb
931C Series II	Net Power 69.8 hp Operating Weight 17,741 lb

931 to 931C Series II specification matrix — Listing labels reported by the source
Publisher name	Source guide	Listing-entry count	Labels named by the source
Cat	931 to 931C Series II	5	931, 931 LGP, 931B, 931B LGP, and 931C Series II

Dimensions and weight
Specification	931	931 LGP	931B	931B LGP	931C Series II
Ground Clearance	1.04 ft	1.15 ft	1.04 ft	1.09 ft	1.02 ft
Width To Outside Of Tracks	5.84 ft	7.52 ft	5.88 ft	7.52 ft	5.84 ft
Height To Top Of Cab	8.92 ft	8.86 ft	8.75 ft	8.83 ft	8.79 ft
Clearance At Full Height And Dump	8.09 ft	8.44 ft	8.08 ft	8.26 ft	8.6 ft
Reach At Dump Height	2.58 ft	2.33 ft	2.59 ft	2.5 ft	2.72 ft

Specification	931 LGP	931B	931B LGP	931C Series II
Length With Bucket On Ground	12.41 ft	12.8 ft	12.59 ft	13.59 ft
Length To Front Of Track	9.09 ft	8.99 ft	9 ft	9.24 ft

Undercarriage
Specification	931	931 LGP	931B	931B LGP	931C Series II
Track Gauge	55.91 in	64.97 in	55.91 in	64.97 in	55.99 in
Length Of Track On Ground	5.99 ft	6.01 ft	5.99 ft	6.25 ft	6.24 ft
Number Of Track Rollers Per Side	5	5	5	5	5
Track Shoe Width	12.01 in	25 in	12.01 in	25 in	14 in
Ground Contact Area	1,736 in2	3,565 in2	1,721 in2	3,720 in2	2,093 in2

Specification	931 LGP	931B	931C Series II
Number Of Shoes Per Side	36	36	37

Specification	931 LGP	931B	931B LGP	931C Series II
Ground Pressure	4.2 psi	8.85 psi	4.65 psi	8.5 psi

Engine
Specification	931	931 LGP	931B	931B LGP	931C Series II
Net Power	62 hp	62 hp	64.4 hp	64.4 hp	69.8 hp
Displacement	317.4 cu in	317.4 cu in	317.4 cu in	317.4 cu in	317.4 cu in

Specification	931 LGP	931B	931B LGP	931C Series II
Number Of Cylinders	4	4	4	4
Power Measured @	2,400 rpm	2,400 rpm	2,400 rpm	2,400 rpm

Operational
Specification	931	931 LGP	931B	931B LGP	931C Series II
Operating Weight	15,212 lb	17,141 lb	15,331 lb	18,398 lb	17,741 lb
Fuel Capacity	30.3 gal	30.2 gal	30.7 gal	30.7 gal	30.7 gal
Hydraulic System Fluid Capacity	13 gal	13 gal	20.1 gal	22.2 gal	15.1 gal
Static Tipping Load	8,896 lb	10,157 lb	9,083 lb	11,455 lb	10,792 lb
Breakout Force - Std Bucket	10,700 lb	12,850 lb	11,560 lb	12,670 lb	14,270 lb
Bucket Capacity - Struck	0.9 yd3	0.9 yd3	0.9 yd3	0.9 yd3	0.9 yd3
Bucket Capacity - Heaped	1.1 yd3	1.1 yd3	1.1 yd3	1.1 yd3	1.1 yd3
Max Speed	6.9 mph	6.9 mph	7.1 mph	7.1 mph	7 mph

Specification	931 LGP	931B	931B LGP	931C Series II
Cooling System Fluid Capacity	6.5 gal	5.3 gal	5.3 gal	5.3 gal
Engine Oil Capacity	3.1 gal	3.2 gal	3.2 gal	3.2 gal
Final Drive Fluid Capacity - Each	3.1 gal	2.2 gal	3.2 gal	2.2 gal
Operating Voltage	12 V	12 V	12 V	12 V
Alternator Supplied Amperage	40 amps	40 amps	40 amps	40 amps

Hydraulic
Specification	931	931 LGP	931B	931B LGP	931C Series II
Raise Time	6.1 sec	6.2 sec	6.1 sec	6.1 sec	6 sec
Dump Time	1.3 sec	1.3 sec	1.4 sec	1.4 sec	2.7 sec
Lower Time	3.5 sec	3.5 sec	3.5 sec	3.5 sec	3.1 sec

Specification	931 LGP	931B	931B LGP	931C Series II
Pump Type	Single-section gear pump	Single-section gear pump	Single-section gear pump	single-section gear
Pump Flow Capacity	22.2 gpm	23 gpm	22.2 gpm	22.7 gpm
Relief Valve Pressure	2,500 psi	2,500 psi	2,500 psi	2,500 psi

Variants — Source comparison annotation
Source guide	Differing-field count reported
931 to 931C Series II	33

Ratios
Figure	931	931 LGP	931B	931B LGP	931C Series II
Engine horsepower per 1,000 lb of weight	4.1	3.6	4.2	3.5	3.9
Fuel tank per engine horsepower	0.49 gal	0.49 gal	0.48 gal	0.48 gal	0.44 gal

Figure	931 LGP	931B	931B LGP	931C Series II
Pump flow per engine horsepower	0.36 gpm	0.36 gpm	0.34 gpm	0.33 gpm

Cat 931 to 931C Series II: track loader

Cat's listing for the 931 to 931C Series II matches a track loader; see the Cat model reference.

931 to 931C Series II: forum references — Forum-title search
Forum index	Equipment class queried	Names in the search	Matching titles
Heavy Equipment Forums	track loader	Cat and the 931, 931B, 931C line that the 931, 931 LGP, 931B, 931B LGP belongs to (no title names the exact model)	220

Topics named by those titles
Title topic	Titles
brakes and steering	38
transmission and drive	20
starting and cranking	11

Topic in the title	Threads	Share of matching threads
brakes and steering	38	17%
transmission and drive	20	9%
starting and cranking	11	5%
tracks and undercarriage	10	5%
hydraulics	9	4%

CAT 931c White Smoke No Start (Heavy Equipment Forums, 2026-09-15)
CAT 931b Lost Forward And Reverse Trans Fluid Is Filling Into Bevel Gear Any Thoughts (Heavy Equipment Forums, 2026-05-21)
CAT 931 Transmission Quit Transmitting Help (Heavy Equipment Forums, 2026-05-02)
CAT 931c Sn 2bj00191 (Heavy Equipment Forums, 2026-03-23)

Used market for the 931 to 931C Series II — Dated first-page listing snapshot
Observation date	Listing source	Equipment search	Listings
2026-09-24	MachineryTrader	Cat track loader	14

Model	Listed	Model years	Lowest asking	Highest asking	Median asking	Median hours
931	11	1974 to 1992	$6,832	$27,500	$18,000	2,785
931B	2	Not stated	$19,900	$19,900	$19,900	None shown
931B LGP	1	1980	None shown	None shown	None shown	None shown

931 to 931C Series II: recall reference — Dated CPSC search
Search date	Database	Names queried	Search result
2026-09-24	U.S. Consumer Product Safety Commission	Cat together with the track loader 931, 931 LGP, 931B, 931B LGP	No matching recall in this search

Sources for this page
Evidence class	Document, classification and recorded date
Reference site	Reference site: Cat 931 — RitchieSpecs. Observed 2026-09-24.
Reference site	Reference site: Cat 931 LGP — RitchieSpecs. Observed 2026-09-24.
Reference site	Reference site: Cat 931B — RitchieSpecs. Observed 2026-09-24.
Reference site	Reference site: Cat 931B LGP — RitchieSpecs. Observed 2026-09-24.
Reference site	Reference site: Cat 931C Series II — RitchieSpecs. Observed 2026-09-24.
Forum threads	Forum threads: Heavy Equipment Forums thread index for Cat 931 to 931C Series II — Heavy Equipment Forums. Observed 2026-09-24.
Used-market listings	Used-market listings: MachineryTrader listings for Cat 931 — MachineryTrader. Observed 2026-09-24.
Federal agency data	Federal agency data: Recall database search for Cat — U.S. Consumer Product Safety Commission. Observed 2026-09-24.

Cat 931 to 931C Series II: Configuration records

931

Specification	Source figure
Dimensions and weight
Height To Top Of Cab	8.92 ft
Ground Clearance	1.04 ft
Width To Outside Of Tracks	5.84 ft
Clearance At Full Height And Dump	8.09 ft
Reach At Dump Height	2.58 ft
Undercarriage
Track Gauge	55.91 in
Ground Contact Area	1,736 in2
Number Of Track Rollers Per Side	5
Track Shoe Width	12.01 in
Engine
Net Power	62 hp
Displacement	317.4 cu in
Operational
Operating Weight	15,212 lb
Fuel Capacity	30.3 gal
Hydraulic System Fluid Capacity	13 gal
Static Tipping Load	8,896 lb
Breakout Force - Std Bucket	10,700 lb
Bucket Capacity - Struck	0.9 yd3
Bucket Capacity - Heaped	1.1 yd3
Max Speed	6.9 mph
Hydraulic
Raise Time	6.1 sec
Dump Time	1.3 sec
Lower Time	3.5 sec
Additional specifications
Length Of Track On Ground	5.99 ft
Machine Class — OEM classification of the base loader family. LGP configuration figures remain in their separately identified historical records; this citation does not certify every option or replacement part.	Track loader [source]

Source

931 LGP

Specification	Source figure
Dimensions and weight
Height To Top Of Cab	8.86 ft
Ground Clearance	1.15 ft
Width To Outside Of Tracks	7.52 ft
Clearance At Full Height And Dump	8.44 ft
Reach At Dump Height	2.33 ft
Length With Bucket On Ground	12.41 ft
Length To Front Of Track	9.09 ft
Undercarriage
Track Gauge	64.97 in
Number Of Shoes Per Side	36
Ground Contact Area	3,565 in2
Number Of Track Rollers Per Side	5
Track Shoe Width	25 in
Ground Pressure	4.2 psi
Engine
Number Of Cylinders	4
Net Power	62 hp
Displacement	317.4 cu in
Power Measured @	2,400 rpm
Operational
Operating Weight	17,141 lb
Fuel Capacity	30.2 gal
Cooling System Fluid Capacity	6.5 gal
Engine Oil Capacity	3.1 gal
Hydraulic System Fluid Capacity	13 gal
Static Tipping Load	10,157 lb
Breakout Force - Std Bucket	12,850 lb
Bucket Capacity - Struck	0.9 yd3
Bucket Capacity - Heaped	1.1 yd3
Max Speed	6.9 mph
Final Drive Fluid Capacity - Each	3.1 gal
Operating Voltage	12 V
Alternator Supplied Amperage	40 amps
Hydraulic
Raise Time	6.2 sec
Dump Time	1.3 sec
Lower Time	3.5 sec
Additional specifications
Length Of Track On Ground	6.01 ft
Pump Type	Single-section gear pump
Pump Flow Capacity	22.2 gpm
Relief Valve Pressure	2,500 psi
Machine Class — OEM classification of the base loader family. LGP configuration figures remain in their separately identified historical records; this citation does not certify every option or replacement part.	Track loader [source]

Source

931B

Specification	Source figure
Dimensions and weight
Height To Top Of Cab	8.75 ft
Ground Clearance	1.04 ft
Width To Outside Of Tracks	5.88 ft
Clearance At Full Height And Dump	8.08 ft
Reach At Dump Height	2.59 ft
Length With Bucket On Ground	12.8 ft
Length To Front Of Track	8.99 ft
Undercarriage
Track Gauge	55.91 in
Number Of Shoes Per Side	36
Ground Contact Area	1,721 in2
Number Of Track Rollers Per Side	5
Track Shoe Width	12.01 in
Ground Pressure	8.85 psi
Engine
Number Of Cylinders	4
Net Power	64.4 hp
Displacement	317.4 cu in
Power Measured @	2,400 rpm
Operational
Operating Weight	15,331 lb
Fuel Capacity	30.7 gal
Cooling System Fluid Capacity	5.3 gal
Engine Oil Capacity	3.2 gal
Hydraulic System Fluid Capacity	20.1 gal
Static Tipping Load	9,083 lb
Breakout Force - Std Bucket	11,560 lb
Bucket Capacity - Struck	0.9 yd3
Bucket Capacity - Heaped	1.1 yd3
Max Speed	7.1 mph
Final Drive Fluid Capacity - Each	2.2 gal
Operating Voltage	12 V
Alternator Supplied Amperage	40 amps
Hydraulic
Raise Time	6.1 sec
Dump Time	1.4 sec
Lower Time	3.5 sec
Additional specifications
Length Of Track On Ground	5.99 ft
Pump Type	Single-section gear pump
Pump Flow Capacity	23 gpm
Relief Valve Pressure	2,500 psi
Machine Class — OEM classification of the base loader family. LGP configuration figures remain in their separately identified historical records; this citation does not certify every option or replacement part.	Track loader [source]

Source

931B LGP

Specification	Source figure
Dimensions and weight
Height To Top Of Cab	8.83 ft
Ground Clearance	1.09 ft
Width To Outside Of Tracks	7.52 ft
Clearance At Full Height And Dump	8.26 ft
Reach At Dump Height	2.5 ft
Length With Bucket On Ground	12.59 ft
Length To Front Of Track	9 ft
Undercarriage
Track Gauge	64.97 in
Ground Contact Area	3,720 in2
Number Of Track Rollers Per Side	5
Track Shoe Width	25 in
Ground Pressure	4.65 psi
Engine
Number Of Cylinders	4
Net Power	64.4 hp
Displacement	317.4 cu in
Power Measured @	2,400 rpm
Operational
Operating Weight	18,398 lb
Fuel Capacity	30.7 gal
Cooling System Fluid Capacity	5.3 gal
Engine Oil Capacity	3.2 gal
Hydraulic System Fluid Capacity	22.2 gal
Static Tipping Load	11,455 lb
Breakout Force - Std Bucket	12,670 lb
Bucket Capacity - Struck	0.9 yd3
Bucket Capacity - Heaped	1.1 yd3
Max Speed	7.1 mph
Final Drive Fluid Capacity - Each	3.2 gal
Operating Voltage	12 V
Alternator Supplied Amperage	40 amps
Hydraulic
Raise Time	6.1 sec
Dump Time	1.4 sec
Lower Time	3.5 sec
Additional specifications
Length Of Track On Ground	6.25 ft
Pump Type	Single-section gear pump
Pump Flow Capacity	22.2 gpm
Relief Valve Pressure	2,500 psi
Machine Class — OEM classification of the base loader family. LGP configuration figures remain in their separately identified historical records; this citation does not certify every option or replacement part.	Track loader [source]

Source

931C Series II

Specification	Source figure
Dimensions and weight
Height To Top Of Cab	8.79 ft
Ground Clearance	1.02 ft
Width To Outside Of Tracks	5.84 ft
Clearance At Full Height And Dump	8.6 ft
Reach At Dump Height	2.72 ft
Length With Bucket On Ground	13.59 ft
Length To Front Of Track	9.24 ft
Undercarriage
Track Gauge	55.99 in
Number Of Shoes Per Side	37
Ground Contact Area	2,093 in2
Number Of Track Rollers Per Side	5
Track Shoe Width	14 in
Ground Pressure	8.5 psi
Engine
Number Of Cylinders	4
Net Power	69.8 hp
Displacement	317.4 cu in
Power Measured @	2,400 rpm
Operational
Operating Weight	17,741 lb
Fuel Capacity	30.7 gal
Cooling System Fluid Capacity	5.3 gal
Engine Oil Capacity	3.2 gal
Hydraulic System Fluid Capacity	15.1 gal
Static Tipping Load	10,792 lb
Breakout Force - Std Bucket	14,270 lb
Bucket Capacity - Struck	0.9 yd3
Bucket Capacity - Heaped	1.1 yd3
Max Speed	7 mph
Final Drive Fluid Capacity - Each	2.2 gal
Operating Voltage	12 V
Alternator Supplied Amperage	40 amps
Hydraulic
Raise Time	6 sec
Dump Time	2.7 sec
Lower Time	3.1 sec
Additional specifications
Length Of Track On Ground	6.24 ft
Pump Type	single-section gear
Pump Flow Capacity	22.7 gpm
Relief Valve Pressure	2,500 psi
Machine Class — OEM classification of the base loader family. LGP configuration figures remain in their separately identified historical records; this citation does not certify every option or replacement part.	Track loader [source]

Source

Compare Cat 931, 931 LGP, 931B, 931B LGP, 931C Series II

Dimensions and weight
Specification	931	931 LGP	931B	931B LGP	931C Series II
Ground Clearance	1.04 ft	1.15 ft	1.04 ft	1.09 ft	1.02 ft
Width To Outside Of Tracks	5.84 ft	7.52 ft	5.88 ft	7.52 ft	5.84 ft
Height To Top Of Cab	8.92 ft	8.86 ft	8.75 ft	8.83 ft	8.79 ft
Clearance At Full Height And Dump	8.09 ft	8.44 ft	8.08 ft	8.26 ft	8.6 ft
Reach At Dump Height	2.58 ft	2.33 ft	2.59 ft	2.5 ft	2.72 ft

Undercarriage
Specification	931	931 LGP	931B	931B LGP	931C Series II
Track Gauge	55.91 in	64.97 in	55.91 in	64.97 in	55.99 in
Length Of Track On Ground	5.99 ft	6.01 ft	5.99 ft	6.25 ft	6.24 ft
Number Of Track Rollers Per Side	5	5	5	5	5
Track Shoe Width	12.01 in	25 in	12.01 in	25 in	14 in
Ground Contact Area	1,736 in2	3,565 in2	1,721 in2	3,720 in2	2,093 in2

Engine
Specification	931	931 LGP	931B	931B LGP	931C Series II
Net Power	62 hp	62 hp	64.4 hp	64.4 hp	69.8 hp
Displacement	317.4 cu in	317.4 cu in	317.4 cu in	317.4 cu in	317.4 cu in

Operational
Specification	931	931 LGP	931B	931B LGP	931C Series II
Operating Weight	15,212 lb	17,141 lb	15,331 lb	18,398 lb	17,741 lb
Fuel Capacity	30.3 gal	30.2 gal	30.7 gal	30.7 gal	30.7 gal
Hydraulic System Fluid Capacity	13 gal	13 gal	20.1 gal	22.2 gal	15.1 gal
Static Tipping Load	8,896 lb	10,157 lb	9,083 lb	11,455 lb	10,792 lb
Breakout Force - Std Bucket	10,700 lb	12,850 lb	11,560 lb	12,670 lb	14,270 lb
Bucket Capacity - Struck	0.9 yd3	0.9 yd3	0.9 yd3	0.9 yd3	0.9 yd3
Bucket Capacity - Heaped	1.1 yd3	1.1 yd3	1.1 yd3	1.1 yd3	1.1 yd3
Max Speed	6.9 mph	6.9 mph	7.1 mph	7.1 mph	7 mph

Hydraulic
Specification	931	931 LGP	931B	931B LGP	931C Series II
Raise Time	6.1 sec	6.2 sec	6.1 sec	6.1 sec	6 sec
Dump Time	1.3 sec	1.3 sec	1.4 sec	1.4 sec	2.7 sec
Lower Time	3.5 sec	3.5 sec	3.5 sec	3.5 sec	3.1 sec

More in Cat: D3B–D4C Series II: prefixes/transmissions/track equipment, Cat D4, 931C Series II LGP/2 related models specs.

Cat 931 to 931C Series II specifications

Cat 931 to 931C Series II: track loader

Sources for this page

Cat 931 to 931C Series II: Configuration records