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621B TRACTOR 35V00001-UP (MACHINE) FRAME AND BODY Caterpillar SIS



WHEEL TRACTOR 621B WHEEL TRACTOR 35V
 621B TRACTOR 35V00001-UP (MACHINE) ZEBP0578 621B 35V   (1974)

Parts group 621B:

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FRAME AND BODY
BUMPER GP
BUMPER GP-FRONT
8D-7800 BUMPER GP-FRONT
8D7800 FRONT BUMPER
CASE & FRAME GP
CASE & FRAME GP
8D-8220 CASE & FRAME GP
8D8220 FRAME AND CASE GROUP -- Part 1 of 3 - Type 1
Serial No. 35V1 to 35V869
CASE & FRAME GP
8D-8220 CASE & FRAME GP
8D8220 FRAME AND CASE GROUP -- Part 2 of 3 - Type 1
Serial No. 35V1 to 35V869
CASE & FRAME GP
8D-8220 CASE & FRAME GP
8D8220 FRAME AND CASE GROUP -- Part 3 of 3 - Type 1
Serial No. 35V1 to 35V869
CASE & FRAME GP
8D-8220 CASE & FRAME GP
8D8220 FRAME AND CASE GROUP -- Part 1 of 3 - Type 2
Serial No. 35V1 to 35V869
CASE & FRAME GP
8D-8220 CASE & FRAME GP
8D8220 FRAME AND CASE GROUP -- Part 2 of 3 - Type 2
Serial No. 35V1 to 35V869
CASE & FRAME GP
8D-8220 CASE & FRAME GP
8D8220 FRAME AND CASE GROUP -- Part 3 of 3 - Type 2
Serial No. 35V1 to 35V869
CASE & FRAME GP
8D-8220 CASE & FRAME GP
8D8220 FRAME AND CASE GROUP--Part 1 of 3
Serial No. 35V870 to 35V881
CASE & FRAME GP
8D-8220 CASE & FRAME GP
8D8220 FRAME AND CASE GROUP--Part 2 of 3
Serial No. 35V870 to 35V881
CASE & FRAME GP
8D-8220 CASE & FRAME GP
8D8220 FRAME AND CASE GROUP--Part 3 of 3
Serial No. 35V870 to 35V881
CASE & FRAME GP
8D-8220 CASE & FRAME GP
8D8220 FRAME AND CASE GROUP--Part 1 of 3
Serial No. 35V882 to 35V989
CASE & FRAME GP
8D-8220 CASE & FRAME GP
8D8220 FRAME AND CASE GROUP--Part 2 of 3
Serial No. 35V882 to 35V989
CASE & FRAME GP
8D-8220 CASE & FRAME GP
8D8220 FRAME AND CASE GROUP--Part 3 of 3
Serial No. 35V882 to 35V989
CASE & FRAME GP
8D-8220 CASE & FRAME GP
8D8220 FRAME AND CASE GROUP--Part 1 of 3
Serial No. 35V990 to 35V1040
CASE & FRAME GP
8D-8220 CASE & FRAME GP
8D8220 FRAME AND CASE GROUP--Part 2 of 3
Serial No. 35V990 to 35V1040
CASE & FRAME GP
8D-8220 CASE & FRAME GP
8D8220 FRAME AND CASE GROUP--Part 3 of 3
Serial No. 35V990 to 35V1040
CASE & FRAME GP
8D-8220 CASE & FRAME GP
8D8220 FRAME AND CASE GROUP--Part 1 of 3
Serial No. 35V1041-Up
CASE & FRAME GP
8D-8220 CASE & FRAME GP
8D8220 FRAME AND CASE GROUP--Part 2 of 3
Serial No. 35V1041-Up
CASE & FRAME GP
8D-8220 CASE & FRAME GP
8D8220 FRAME AND CASE GROUP--Part 3 of 3
Serial No. 35V1041-Up
FENDER GP
FENDER GP
8D-6906 FENDER GP
8D6906 FENDERS GROUP
Serial No. 35V1 to 35V989
FENDER GP
8D-6906 FENDER GP
8D6906 FENDERS GROUP
Serial No. 35V1145-Up
FENDER GP
8D-6906 FENDER GP
8D6906 FENDERS GROUP
Serial No. 35V990 to 35V1144 inclusive
GUARD GP
RADIATOR GUARD GROUP
8D-7760 RADIATOR GUARD GROUP
8D7760 RADIATOR GUARD GROUP
Serial No. 35V1 to 35V691
RADIATOR GUARD GROUP
8D-7760 RADIATOR GUARD GROUP
8D7760 RADIATOR GUARD GROUP
Serial No. 35V692-Up
GUARD GP-CRANKCASE
8D-7170 GUARD GP-CRANKCASE
8D7170 CRANKCASE GUARD
Serial No. 35V1 to 35V930
GUARD GP-CRANKCASE
8D-7170 GUARD GP-CRANKCASE
8D7170 CRANKCASE GUARD GROUP
Serial No. 35V931-Up
HITCH GP
HITCH GP-CUSHION
8J-7680 HITCH GP-CUSHION
8J7680 CUSHION HITCH GROUP - Part 1
Serial No. 35V1 to 35V728
HITCH GP-CUSHION
8J-7680 HITCH GP-CUSHION
8J7680 CUSHION HITCH GROUP - Part 2
Serial No. 35V1 to 35V728
HITCH GP-CUSHION
8J-7680 HITCH GP-CUSHION
8J7680 CUSHION HITCH GROUP - Part 1
Serial No. 35V729 to 35V804
HITCH GP-CUSHION
8J-7680 HITCH GP-CUSHION
8J7680 CUSHION HITCH GROUP - Part 2
Serial No. 35V729 to 35V804
HITCH GP-CUSHION
8J-7680 HITCH GP-CUSHION
8J7680 CUSHION HITCH GROUP--Part 1 of 2
Serial No. 35V805 to 985
HITCH GP-CUSHION
8J-7680 HITCH GP-CUSHION
8J7680 CUSHION HITCH GROUP--Part 2 of 2
Serial No. 35V805 to 35V985
HITCH GP-CUSHION
8J-7680 HITCH GP-CUSHION
8J7680 CUSHION HITCH GROUP--Part 1 of 2
Serial No. 35V986 to 35V989
HITCH GP-CUSHION
8J-7680 HITCH GP-CUSHION
8J7680 CUSHION HITCH GROUP--Part 2 of 2
Serial No. 35V986 to 35V989
HITCH GP-CUSHION
8J-7680 HITCH GP-CUSHION
8J7680 CUSHION HITCH GROUP--Part 1 of 2
Serial No. 35V990 to 35V1329 inclusive
HITCH GP-CUSHION
8J-7680 HITCH GP-CUSHION
8J7680 CUSHION HITCH GROUP--Part 2
Serial No. 35V990 to 35V1329 inclusive
HITCH GP-CUSHION
8J-7680 HITCH GP-CUSHION
8J7680 CUSHION HITCH GROUP--Part 1
Serial No. 35V1330-Up
HITCH GP-CUSHION
8J-7680 HITCH GP-CUSHION
8J7680 CUSHION HITCH GROUP--Part 2
Serial No. 35V1330-Up
LINES GP-CUSHION HITCH
8J-7976 LINES GP-CUSHION HITCH
8J7976 CUSHION HITCH LINES GROUP--Part 1
Serial No. 35V775 to 35V989 inclusive
LINES GP-CUSHION HITCH
8J-7976 LINES GP-CUSHION HITCH
8J7976 CUSHION HITCH LINES GROUP--Part 2
Serial No. 35V775 to 35V989 inclusive
CUSHION HITCH LINES GROUP
9J-7976 CUSHION HITCH LINES GROUP
9J7976 CUSHION HITCH LINES GROUP--Part 1
Serial No. 35V990-Up
CUSHION HITCH LINES GROUP
9J-7976 CUSHION HITCH LINES GROUP
8J7976 CUSHION HITCH LINES GROUP--Part 2
Serial No. 35V990-Up
VALVE GP-CUSHION HITCH CONT
9J-5740 VALVE GP-CUSHION HITCH CONT
9J5740 CONTROL VALVE GROUP--Part 1--Type 1
Serial No. 35V684 to 35V1305 inclusive
9J5738 Valve parts are shown on Page 273
VALVE GP-CUSHION HITCH CONT
9J-5740 VALVE GP-CUSHION HITCH CONT
9J5740 CONTROL VALVE GROUP--Part 2--Type 1
Serial No. 35V684 to 35V1305 inclusive
VALVE GP-CUSHION HITCH CONT
9J-5740 VALVE GP-CUSHION HITCH CONT
9J5740 CONTROL VALVE GROUP--Part 1--Type 2
Serial No. 35V684 to 35V1305 inclusive
9J5738 Valve parts are shown on Pages 273
VALVE GP-CUSHION HITCH CONT
9J-5740 VALVE GP-CUSHION HITCH CONT
9J5740 CONTROL VALVE GROUP--Part 2--Type 2
Serial No. 35V684 to 35V1305 inclusive
HOOD GP
SHIELD GP-ENGINE
6G-3400 SHIELD GP-ENGINE
6G3400 ENGINE COMPARTMENT SHIELD GROUP
Serial No. 35V1330-Up
HOOD GP
8D-7780 HOOD GP
8D7780 HOOD GROUP
Serial No. 35V1 to 35V806
HOOD GP
8D-7780 HOOD GP
8D7780 HOOD GROUP
Serial No. 35V807 to 35V1329 inclusive
HOOD GP
6G-7890 HOOD GP
6G7890 HOOD GROUP
Serial No. 35V1330-Up
LINES GP
LINES GP-LUBRICATION
3G-6661 LINES GP-LUBRICATION
3G6661 CENTRAL LUBRICATION LINES GROUP
Serial No. 35V1 to 35V1150 inclusive
LINES GP-LUBRICATION
3G-6661 LINES GP-LUBRICATION
3G6661 CENTRAL LUBRICATION LINES GROUP
Serial No. 35V1151-Up
LUBRICATION GP
LINES GP-LUBRICATION
3G-6661 LINES GP-LUBRICATION
3G6661 CENTRAL LUBRICATION LINES GROUP
Serial No. 35V1 to 35V1150 inclusive
LINES GP-LUBRICATION
3G-6661 LINES GP-LUBRICATION
3G6661 CENTRAL LUBRICATION LINES GROUP
Serial No. 35V1151-Up
TREAD GP-NON-SKID
TREAD GP-NON-SKID
8D-8180 TREAD GP-NON-SKID
8D8180 SAFETY TREAD GROUP

Information:

(For parts list, see above)

Special Instruction
Installation Of Replacement Axle Housings On Tractor-Scrapers{3260}
Installation Of Replacement Axle Housings On Tractor-Scrapers{3260}
Disassembly and Assembly
Axle Housing
621B & 623B TRACTORS POWER TRAIN
Axle Housings (621B Scraper)
621 B & 627B TRACTOR-SCRAPER VEHICLE SYSTEMS
Service Magazine
Conversion Of Earlier Axle Housings To New Stronger Design{3260,4002,4051,0665}
1982/08/23
Method To Put Lubricant On Brake Camshaft Bearing Changed{4269,4251,4261,4051,3260}
1978/12/18
New Axle Housing And Hub Used In Final Drive And Wheel Group{4051,4054}
1990/09/24
Special Instruction
Battery Ratings And Cross Reference Chart{1401}
Battery Ratings And Cross Reference Chart{1401}
Service Magazine
Maintenance Free Batteries{1401}
1986/03/10
Requirements For Shipping Wet Batteries In The U.S.{1401,7500}
1986/04/07
Heavy-Duty Line Of Batteries Available To U.S. Dealers{1400,1401}
1986/09/01
Safety Vent Caps For Caterpillar Batteries{1401}
1977/07/11
5P957 And 5P3514 Coolant And Battery Tester{0786,1395,1401}
1987/03/23
Alternator/Generator Output Test On The Engine{1401,1404,1405,1406}
1987/05/04
Testing The Starter On The Engine{1401,1450}
1987/05/04
Revised Instructions For Installation of New Maintenance Free Batteries{1401,1400}
1988/12/12
Voltage Regulator Can Cause Variable Ammeter Indications{1410,1401,1405,1406,7467}
1979/10/22
Two Plug Assemblies (Booster Cables) Are Available To Start Machines{1401,1453}
1979/11/05
Batteries Can Be Damaged If Too Much Vacuum Is Used During Electrolyte Fill{1401}
1979/11/26
High Performance Maintenance Free Battery Available{1401}
1989/01/16
Limitations On Engine Cranking Time{1453,1401}
1989/03/27
Preventive Maintenance For Batteries{1401}
1989/03/27
Causes And Effects Of Low Battery Voltage On Electric Starters{1401,1453,1467}
1989/04/24
Procedure For Replacing Batteries Or Battery Cables {1401,1402,1411}
1989/05/01
Procedure For Replacing Batteries, Battery Cables Or Disconnect Switches {1401,1402,1411}
1989/05/01
Procedure For Replacing Batteries, Battery Cables Or Disconnect Switches {1401,1402,1411}
1989/05/01
Special Instruction, "Battery Charging Rate And Time Tables," Available On Oil Resistant Paper{0374,1401}
1989/06/19
Torque Check Necessary For Front Support Bracket Bolts When Damper And Pulley Are Removed {1153}
1996/05/13
Specifications
Front Bumper
621B TRACTOR POWER TRAIN
Service Magazine
New Design Steps To Operator's Compartment And Engine Service Platform{7154,7254}
1977/11/28
Specifications
Case and Frame Group
621B TRACTOR POWER TRAIN
Service Magazine
New Differential Thrust Pin Can Be Adjusted From Outside The Case{3258,3280,4051,4059,7051}
1982/11/08
Polarity Connections And Use Of Service Meter Films When Service Meter Kits Are Installed{7480,7000}
1987/02/16
Disassembly and Assembly
Hood
3406 VEHICULAR ENGINE FOR 621B & 623B TRACTORS
Service Magazine
Proper Maintenance Improves Performance of Lock Cylinders {0645, 7273, 7308}
Proper Maintenance Improves Performance of Lock Cylinders {0645, 7273, 7308}
Specifications
Draft Frame
621B & 627B SCRAPERS HYDRAULIC SYSTEM
Reuse And Salvage Guidelines
Rebuilding Wheel Tractor-Scraper Hitches, Brackets, and Scraper Kingbolt Housings{6207, 6245, 7051, 7107}
Rebuilding Wheel Tractor-Scraper Hitches, Brackets, and Scraper Kingbolt Housings{6207, 6245, 7051, 7107}
Disassembly and Assembly
Tractor And Scraper
621 B & 627B TRACTOR-SCRAPER VEHICLE SYSTEMS
Draft Frame And Cushion Hitch Assembly Vertical Bearings
621 B & 627B TRACTOR-SCRAPER VEHICLE SYSTEMS
Service Magazine
New Differential Thrust Pin Can Be Adjusted From Outside The Case{3258,3280,4051,4059,7051}
1982/11/08
New Engine Mount Keeps Forces Caused From Engine Side-To-Side Movement Away From The Frame Of The Vehicle{1152}
1977/03/21
2G2827 Block Assembly Gives Support To Hitch During Tractor-Scraper Separation{0640,0643,3258,4059,7100}
1977/11/07
Cushion Hitch Rebuild Kits for Wheel Tractor-Scrapers are Available in the Service Information System (SIS) {6207, 6245, 7051, 7100, 7107}
Cushion Hitch Rebuild Kits for Wheel Tractor-Scrapers are Available in the Service Information System (SIS) {6207, 6245, 7051, 7100, 7107}
Specifications
Crankcase Guards
621B TRACTOR POWER TRAIN
Disassembly and Assembly
Crankcase Guards
3406 VEHICULAR ENGINE FOR 621B & 623B TRACTORS
Special Instruction
Replacing the 8D3483 Hitch Bracket{3283}
Replacing the 8D3483 Hitch Bracket{3283}
Installation Of Cushion Hitch Bracket And Hitch Bearings{7107}
Installation Of Cushion Hitch Bracket And Hitch Bearings{7107}
Specifications
Hitch
621, 623 & 627 TRACTORS CUSHION-HITCH
Reuse And Salvage Guidelines
Rebuilding Wheel Tractor-Scraper Hitches, Brackets, and Scraper Kingbolt Housings{6207, 6245, 7051, 7107}
Rebuilding Wheel Tractor-Scraper Hitches, Brackets, and Scraper Kingbolt Housings{6207, 6245, 7051, 7107}
Disassembly and Assembly
Cushion Hitch Hydraulic Pump
621B & 623B TRACTORS POWER TRAIN
Cushion Hitch And Push-Pull Hydraulic Oil Pump
621 B & 627B TRACTOR-SCRAPER VEHICLE SYSTEMS
Cushion Hitch Selector Valve
621 B & 627B TRACTOR-SCRAPER VEHICLE SYSTEMS
Cushion Hitch Control Valve
621 B & 627B TRACTOR-SCRAPER VEHICLE SYSTEMS
Cushion Hitch Load Cylinder
621 B & 627B TRACTOR-SCRAPER VEHICLE SYSTEMS
Accumulator (Cushion Hitch)
621 B & 627B TRACTOR-SCRAPER VEHICLE SYSTEMS
Tractor And Scraper
621 B & 627B TRACTOR-SCRAPER VEHICLE SYSTEMS
Draft Frame And Cushion Hitch Assembly Vertical Bearings
621 B & 627B TRACTOR-SCRAPER VEHICLE SYSTEMS
Cushion Hitch
621 B & 627B TRACTOR-SCRAPER VEHICLE SYSTEMS
Horizontal Cushion Hitch Bearings
621 B & 627B TRACTOR-SCRAPER VEHICLE SYSTEMS
Steering Link Assemblies
621 B & 627B TRACTOR-SCRAPER VEHICLE SYSTEMS
Cushion Hitch "H" Links And Bearings
621 B & 627B TRACTOR-SCRAPER VEHICLE SYSTEMS
Service Magazine
New Clamps And Spacers Used On Cushion Hitch To Prevent Restriction In Air Lines{5057,4257,4304}
1980/06/16
Change Made To Cushion Hitch Lines Groups{5313,7107}
1980/06/23
Bracket And Hardware Added To Prevent Movement Of Accumulator Hose{5077,5057,7107}
1980/08/25
Different Wrenches Are Necessary For Removal And Installation Of Nut On Horizontal Hitch Pins{0612,7107,7116}
1980/10/20
Improved Clamp Bars Hold Scraper Hydraulic Lines On Cushion Hitch{5057,5300}
1980/11/03
New Bleeder Tube Assembly For Cushion Hitch Accumulator{5077,7107}
1981/04/06
Remove Block Assemblies Used For Shipment{7505,7100,4059,3250}
1981/04/27
Larger Retainer Bolts Used To Hold Horizontal Pivot Pins In Cushion Hitch{7107,7110,7117}
1981/06/08
Hose Locations Changed To Prevent Contact With Hitch Components{4304,5057}
1982/02/22
Correct Installation Of 1U317 Control Valve Group For Cushion Hitch{5313,7107}
1982/05/24
Larger Bolts Used In Hitch Control Group To Hold Accumulator Assembly For Cushion Hitch{5077,7107}
1977/01/17
New Socket For Installation And Removal Of Rear Hitch Pin{0612,7117}
1977/05/30
New Hose And Elbows Used In Cushion Hitch Lines Group{5057,7107}
1977/08/22
Bearing Puller Adapter Is Available For Removal And Installation Of Cushion Hitch Bearings{0621,0623,7107}
1977/09/12
2G2827 Block Assembly Gives Support To Hitch During Tractor-Scraper Separation{0640,0643,3258,4059,7100}
1977/11/07
Central Lubrication System Now Used For Lower Cushion Hitch Pins And Horizontal Pivot Pins{7107,7116}
1978/03/20
Stronger Hose Assembly For Cushion Hitch Control Group{5057,7107}
1978/05/08
New Bolts (Self-Locking) And Hardened Washers Now Used In Cushion Hitch Group{7107}
1978/07/10
Special Oversize (Larger Than Standard Size) Replacement Bearings Available For Cushion Hitch Repair{7107}
1978/09/04
If Loose Bolts Are A Problem, A Modification Can Be Made To The Plate Used To Hold The Leveling Valve For The Cushion Hitch{5313,7107}
1979/04/30
Two New Elbows And Nipples Are Used In The Central Lubrication Lines For Cushion Hitches{7107,1300}
1979/05/14
New Locknut And Thread Lock Compound Used On Control Rod For Cushion Hitch Valve{5313,7107,5057}
1979/06/04
Change Made To Cushion Hitch Leveling Valve Group{5313}
1979/08/20
Oversize Seals Available For Cushion-Hitch Repair{7107,7109,7110}
1989/02/27
Correction to Service Magazine , "Inspection Procedure for Pin and Bushing Wear in Hitch Components and Steering Linkage for Wheel Tractor-Scrapers" {4305, 7106, 7107, 7108, 7109}
2012/04/27
Correction to the Service Magazine, "Oversize Bearings and Seals are Available for the Cushion Hitch Links Allow Rework of the Steering Links Without Welding" {7051, 7106, 7107}
2001/07/09
Oversize Bearings and Seals are Available for the Steering Links {7106, 7107}
2001/08/13
Shims Available To Compensate for Wear In Oscillating Hitch for Certain Wheel Tractor-Scrapers {7106, 7107}
2011/03/18
Cushion Hitch Rebuild Kits for Wheel Tractor-Scrapers are Available in the Service Information System (SIS) {6207, 6245, 7051, 7100, 7107}
Cushion Hitch Rebuild Kits for Wheel Tractor-Scrapers are Available in the Service Information System (SIS) {6207, 6245, 7051, 7100, 7107}
Disassembly and Assembly
Hood
3406 VEHICULAR ENGINE FOR 621B & 623B TRACTORS
Service Magazine
Increased Clearance Between The Turbocharger Heat Shield And Turbocharger Oil Line Prevents Possible Contact Damage{1073,1307}
1978/09/18
Special Instruction
Installation Of Cable Access Steps{7254}
Installation Of Cable Access Steps{7254}
Service Magazine
New Design Steps To Operator's Compartment And Engine Service Platform{7154,7254}
1977/11/28
Two New Elbows And Nipples Are Used In The Central Lubrication Lines For Cushion Hitches{7107,1300}
1979/05/14
New Valve Lifter Assembly Provides Improved Lubrication Of Lifter Roller And Camshaft Lobes{1209,1210}
1994/06/20
Special Instruction
Replacing the 8D3483 Hitch Bracket{3283}
Replacing the 8D3483 Hitch Bracket{3283}
Installation Of 2G4553 Thrust Plate{4201, 4209}
Installation Of 2G4553 Thrust Plate{4201, 4209}
Installation Of Replacement Axle Housings On Tractor-Scrapers{3260}
Installation Of Replacement Axle Housings On Tractor-Scrapers{3260}
Installation Of Cable Access Steps{7254}
Installation Of Cable Access Steps{7254}
Disassembly and Assembly
Cushion Hitch And Push-Pull Hydraulic Oil Pump
621 B & 627B TRACTOR-SCRAPER VEHICLE SYSTEMS
Cushion Hitch Selector Valve
621 B & 627B TRACTOR-SCRAPER VEHICLE SYSTEMS
Cushion Hitch Control Valve
621 B & 627B TRACTOR-SCRAPER VEHICLE SYSTEMS
Cushion Hitch Load Cylinder
621 B & 627B TRACTOR-SCRAPER VEHICLE SYSTEMS
Accumulator (Cushion Hitch)
621 B & 627B TRACTOR-SCRAPER VEHICLE SYSTEMS
Tractor And Scraper
621 B & 627B TRACTOR-SCRAPER VEHICLE SYSTEMS
Draft Frame And Cushion Hitch Assembly Vertical Bearings
621 B & 627B TRACTOR-SCRAPER VEHICLE SYSTEMS
Cushion Hitch
621 B & 627B TRACTOR-SCRAPER VEHICLE SYSTEMS
Horizontal Cushion Hitch Bearings
621 B & 627B TRACTOR-SCRAPER VEHICLE SYSTEMS
Steering Link Assemblies
621 B & 627B TRACTOR-SCRAPER VEHICLE SYSTEMS
Cushion Hitch "H" Links And Bearings
621 B & 627B TRACTOR-SCRAPER VEHICLE SYSTEMS
Wheel Assembly (621B Scraper)
621 B & 627B TRACTOR-SCRAPER VEHICLE SYSTEMS
Tires And Wheels, Wheel Bearings And Duo-Cone Seals (621 Scraper)
621 B & 627B TRACTOR-SCRAPER VEHICLE SYSTEMS
Axle Housings (621B Scraper)
621 B & 627B TRACTOR-SCRAPER VEHICLE SYSTEMS
Service Magazine
Change Made To Cushion Hitch Lines Groups{5313,7107}
1980/06/23
Different Wrenches Are Necessary For Removal And Installation Of Nut On Horizontal Hitch Pins{0612,7107,7116}
1980/10/20
Remove Block Assemblies Used For Shipment{7505,7100,4059,3250}
1981/04/27
Larger Retainer Bolts Used To Hold Horizontal Pivot Pins In Cushion Hitch{7107,7110,7117}
1981/06/08
Hose Locations Changed To Prevent Contact With Hitch Components{4304,5057}
1982/02/22
New Differential Thrust Pin Can Be Adjusted From Outside The Case{3258,3280,4051,4059,7051}
1982/11/08
New Engine Mount Keeps Forces Caused From Engine Side-To-Side Movement Away From The Frame Of The Vehicle{1152}
1977/03/21
New Socket For Installation And Removal Of Rear Hitch Pin{0612,7117}
1977/05/30
Bearing Puller Adapter Is Available For Removal And Installation Of Cushion Hitch Bearings{0621,0623,7107}
1977/09/12
2G2827 Block Assembly Gives Support To Hitch During Tractor-Scraper Separation{0640,0643,3258,4059,7100}
1977/11/07
New Design Steps To Operator's Compartment And Engine Service Platform{7154,7254}
1977/11/28
Bolt Torque Increased For Correct Wheel Bearing Adjustment{4208}
1987/01/19
Central Lubrication System Now Used For Lower Cushion Hitch Pins And Horizontal Pivot Pins{7107,7116}
1978/03/20
New Bolts (Self-Locking) And Hardened Washers Now Used In Cushion Hitch Group{7107}
1978/07/10
Special Oversize (Larger Than Standard Size) Replacement Bearings Available For Cushion Hitch Repair{7107}
1978/09/04
Two Air Vents Added To Operator's Compartment{7301,7253}
1978/09/11
Two New Elbows And Nipples Are Used In The Central Lubrication Lines For Cushion Hitches{7107,1300}
1979/05/14
New Locknut And Thread Lock Compound Used On Control Rod For Cushion Hitch Valve{5313,7107,5057}
1979/06/04
Change Made To Cushion Hitch Leveling Valve Group{5313}
1979/08/20
Coolant Now Used In Wheels To Prevent Burned Tire Beads And Possible Tire Explosion{4201}
1979/12/17
Oversize Seals Available For Cushion-Hitch Repair{7107,7109,7110}
1989/02/27
New Axle Housing And Hub Used In Final Drive And Wheel Group{4051,4054}
1990/09/24
New Valve Lifter Assembly Provides Improved Lubrication Of Lifter Roller And Camshaft Lobes{1209,1210}
1994/06/20
Reuse And Salvage Guidelines
Rebuilding Wheel Tractor-Scraper Hitches, Brackets, and Scraper Kingbolt Housings{6207, 6245, 7051, 7107}
Rebuilding Wheel Tractor-Scraper Hitches, Brackets, and Scraper Kingbolt Housings{6207, 6245, 7051, 7107}
Service Magazine
Cushion Hitch Rebuild Kits for Wheel Tractor-Scrapers are Available in the Service Information System (SIS) {6207, 6245, 7051, 7100, 7107}
Cushion Hitch Rebuild Kits for Wheel Tractor-Scrapers are Available in the Service Information System (SIS) {6207, 6245, 7051, 7100, 7107}
Reuse And Salvage Guidelines
Specifications and Reusability for Hydraulic Gear Pumps and Motors (Groups 1, 2, and 3) {5061, 5073}
Specifications and Reusability for Hydraulic Gear Pumps and Motors (Groups 1, 2, and 3) {5061, 5073}
Rebuilding Wheel Tractor-Scraper Hitches, Brackets, and Scraper Kingbolt Housings{6207, 6245, 7051, 7107}
Rebuilding Wheel Tractor-Scraper Hitches, Brackets, and Scraper Kingbolt Housings{6207, 6245, 7051, 7107}
Service Magazine
Cushion Hitch Rebuild Kits for Wheel Tractor-Scrapers are Available in the Service Information System (SIS) {6207, 6245, 7051, 7100, 7107}
Cushion Hitch Rebuild Kits for Wheel Tractor-Scrapers are Available in the Service Information System (SIS) {6207, 6245, 7051, 7100, 7107}
Special Instruction
Assembly and Installation of Inverted Duo-Cone Seals{7561}
Assembly and Installation of Inverted Duo-Cone Seals{7561}
Service Magazine
Determining The Cause Of Glow Plug Tip Failures{1053,1105,1412}
1986/06/02
Tool Operating Manual
NEHS1214: 455-0126 Nitrogen Booster Pump Group {0374, 0599, 0647, 0756, 4263, 4331, 5077, 7200}
NEHS1214: 455-0126 Nitrogen Booster Pump Group {0374, 0599, 0647, 0756, 4263, 4331, 5077, 7200}
NEHS1259: 469-7632 Swing Gearbox Lifting Tool for 6015-6090 Hydraulic Mining Shovel {0629, 7000}
NEHS1259: 469-7632 Swing Gearbox Lifting Tool for 6015-6090 Hydraulic Mining Shovel {0629, 7000}
Service Magazine
2G2827 Block Assembly Gives Support To Hitch During Tractor-Scraper Separation{0640,0643,3258,4059,7100}
1977/11/07
Special Instruction
Installation Of 2G4553 Thrust Plate{4201, 4209}
Installation Of 2G4553 Thrust Plate{4201, 4209}
Specifications
Adjustment of the Wheel Bearings
621B TRACTOR POWER TRAIN
Disassembly and Assembly
Wheels
621B & 623B TRACTORS POWER TRAIN
Wheel Bearings And Seals
621B & 623B TRACTORS POWER TRAIN
Wheel Assembly (621B Scraper)
621 B & 627B TRACTOR-SCRAPER VEHICLE SYSTEMS
Tires And Wheels, Wheel Bearings And Duo-Cone Seals (621 Scraper)
621 B & 627B TRACTOR-SCRAPER VEHICLE SYSTEMS
Service Magazine
Bolt Torque Increased For Correct Wheel Bearing Adjustment{4208}
1987/01/19
Coolant Now Used In Wheels To Prevent Burned Tire Beads And Possible Tire Explosion{4201}
1979/12/17
Tool Operating Manual
Assembly of 175-5507 and 361-3889 Nitrogen Charging Groups and 175-7410 Auxiliary Fitting Group{0647, 7200}
Assembly of 175-5507 and 361-3889 Nitrogen Charging Groups and 175-7410 Auxiliary Fitting Group{0647, 7200}
NEHS1214: 455-0126 Nitrogen Booster Pump Group {0374, 0599, 0647, 0756, 4263, 4331, 5077, 7200}
NEHS1214: 455-0126 Nitrogen Booster Pump Group {0374, 0599, 0647, 0756, 4263, 4331, 5077, 7200}
Service Magazine
Cushion Hitch Rebuild Kits for Wheel Tractor-Scrapers are Available in the Service Information System (SIS) {6207, 6245, 7051, 7100, 7107}
Cushion Hitch Rebuild Kits for Wheel Tractor-Scrapers are Available in the Service Information System (SIS) {6207, 6245, 7051, 7100, 7107}

Truck sale:

Caterpillar 621B
 
Caterpillar 621B
- Road Scraper
MACALLISTER MACHINERY CO., INC
Caterpillar 621B
 
Caterpillar 621B
- Road Scraper
MACALLISTER MACHINERY CO., INC
Caterpillar 621B
 
Caterpillar 621B
- Road Scraper
FINNING CANADA
Caterpillar 621B, Road Scraper, Construction
46,500 
Caterpillar 621B, Road Scraper, Construction
- Road Scraper
QUINN COMPANY
Caterpillar 621B, Road Scraper, Construction
46,500 
Caterpillar 621B, Road Scraper, Construction
- Road Scraper
QUINN COMPANY
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AVSpare.com is in no way associated with any of the manufacturers we have listed. All manufacturer's names and descriptions are for reference only. Cat® and Caterpillar® are registered trademarks of Caterpillar, Inc.