Case 1121G Wheel Loader Service Parts Catalogue (531216112PC) (November 2025)

A 1121G wheel loader usually lives in gravel pits, quarries, and busy yards—dusty, tight on time, and hard on parts. This service parts catalogue helps you plan ahead so when something fails, you’ve already got the right bits on the shelf. Say you’re planning a brake job: you can trace the exploded view, match every seal and bushing, and order the whole kit once, instead of tearing it down, finding one odd O-ring, and parking the machine for days.

Applications & Use Cases

• Lay out a full job: trace the assemblies in the diagram, list every gasket, seal, and bearing, and have them ready before you crack a single line or cover.
• During teardown, check and verify part numbers against what you’re pulling off, so you don’t mix early and late-style parts that look the same.
• Isolate which hose, tube, or harness you actually need by following the routing in the illustration instead of guessing from a pile of similar pieces.
• When a supplier offers a “will-fit” part, inspect the drawing and suffix codes to see if it’ll actually align and bolt up on your specific machine.
• For seasonal overhauls, plan your initial stocking list so you can bleed, test, and return the loader to work without waiting on one missing seal.

FAQ

Q: Is this a searchable PDF or some locked-down viewer thing?

A: It’s generally a standard PDF, so you can search by part number or name, and jump around pretty quickly.

Q: Can I print pages to take out to the machine?

A: Yes, most folks print the sections they’re working on, stick them in a sleeve, and mark notes as they inspect and test parts during the job.

Safety Note

Always support the loader securely and relieve any stored pressure before you route, remove, or install hydraulic components referenced in the catalogue.

Case 1121G Wheel Loader Index:

05.100.AA [01] INITIAL STOCKING LIST (LIST A)
05.100.BB [01] INITIAL STOCKING LIST (LIST B)
10.202.AM AIR PRE-CLEANER ASSEMBLY; (Var) 424223001
10.216.AI [01] FUEL TANK; (Var) 734840011
10.216.AY FUEL LINE; (Var) 734840011
10.400.BE [01] COOLING SYSTEM LINE INSTALLATION; (Var) 734840011
10.400.BE [01] COOLING SYSTEM LINE INSTALLATION; (Var) 734840011
10.400.BE [02] COOLING SYSTEM LINE INSTALLATION; (Var) 734840011
10.400.BE [02] COOLING SYSTEM LINE INSTALLATION; (Var) 734840011
10.400.BE [04] INTAKE, RADIATOR, AND FLUID COOLERS; (Var) 482585103
10.500.AA DEF TANK; (Var) 734840011
10.500.AA [02] DEF TANK; (Var) 734840011
21.000.AA TRANSMISSION PL26 4SP EC4 A ; (Var) 424224203
21.105.AQ HOSE ASSY, OIL; (Var) 424224203
21.105.BC FILTER ASSY, REMOTE; (Var) 424224203
21.105.BK PUMP ASSY, TRANS CHARGE; (Var) 424224203
21.105.BM PIPE, OIL; (Var) 424224203
21.109.AE TRANSMISSION COOLER LINES WITH BY-PASS VALVE; (Var) 424224203
21.113.AA PLUG ASSY, HOUSING; (Var) 424224203
21.113.AD HOUSING, TRANSMISSION; (Var) 424224203
21.113.AF DIPSTICK, OIL; (Var) 424224203
21.113.AI HOUSING, TRANSMISSION BREATHER; (Var) 424224203
21.130.AZ CONTROLLER, EC4; (Var) 424224203
21.135.AL VALVE, CONTROL, TRANSMISSION; (Var) 424224203
21.135.AL [01] VALVE ASSY, GEAR SHIFT; (Var) 424224203
21.135.AX [01] SHAFT ASSY, PTO1; (Var) 424224203
21.135.AX [02] SHAFT ASSY, PTO2; (Var) 424224203
21.135.AX [03] SHAFT ASSY, ADAPTOR PLATE; (Var) 424224203
21.135.AX [03] SHAFT ASSY, ADAPTOR PLATE; (Var) 424224203
21.155.AN [01] SHAFT ASSY, KV/K1; (Var) 424224203
21.155.AN [02] SHAFT ASSY, KV/K1 END; (Var) 424224203
21.155.AN [03] SHAFT ASSY, KV/K1 GEAR; (Var) 424224203
21.155.AN [04] SHAFT ASSY, KR/K2; (Var) 424224203
21.155.AN [05] SHAFT ASSY, KR/K2 GEARS; (Var) 424224203
21.155.AN [06] SHAFT ASSY, KR/K2 END; (Var) 424224203
21.155.AN [07] SHAFT ASSY, K3/K4; (Var) 424224203
21.155.AN [08] SHAFT ASSY, GEARS K3/K4 GROUP; (Var) 424224203
21.155.AN [09] COUNTER SHAFT ASSY; (Var) 424224203
21.155.AY SHAFT ASSY, FLANGE YOKE; (Var) 424224203
21.155.AY [01] SHAFT ASSY, OUTPUT; (Var) 424224203
21.700.AA TORQUE CONVERTER; (Var) 424224203
21.700.AA [01] BELL HOUSING ASSY, TRANS; (Var) 424224203
21.700.AA [02] BELL HOUSING ASSY, COVER; (Var) 424224203
21.700.AA [03] PLATE, GROUP TRANS. FLEX; (Var) 424224203
25.100.AA FRONT AND REAR DIFFERENTIAL INSTALLATION, DIFF LOCK & REAR OPEN DIFF, HD;
(Var) 734156051
25.100.AA [02] FRONT AND REAR AXLE INSTALLATION; (Var) 734840011
25.100.AK [03] FRONT AND REAR AXLE MOUNTING LUBRICATION LINES; (Var) 734840011

27.100.AK FRONT AND REAR DIFFERENTIAL INSTALLATION, DIFF LOCK & REAR OPEN DIFF, HD;
(Var) 734156051
33.110.AM BRAKE, PARKING; (Var) 424224203
33.110.AX BRAKE, PARKING; (Var) 424224203
33.202.CT [11] BRAKE PUMP AND PLUMBING, PL23/26_part 1; (Var) 424224203
33.202.CT [12] BRAKE PUMP AND PLUMBING, PL23/26_part 2; (Var) 424224203
33.202.CT [13] BRAKE PUMP AND PLUMBING, PL23/26_part 3; (Var) 424224203
35.300.AB TRANSMISSION HYDRAULIC OIL AND FUEL COOLER; (Var) 482585103
35.300.BC [01] HYDRAULIC SYSTEM TANK; (Var) 734840011
35.357.AA [01] CONTROL VALVE LINE – 3 FUNCTION, EH; (Var) 734054313
35.359.AE [01] HOSE INSTALLATION, 3 SPOOL / 3 LEVER; (Var) 734054313
35.701.AX [01] 3-SPL, HYDRAULIC COUPLER BRACKET; (Var) 402011011
35.701.AX [02] LIFT CYLINDER LINES AND FITTINGS; (Var) 734840011
35.723.AB [01] LINES, CYLINDER, TILT CYLINDER LINES AND FITTINGS; (Var) 734840011
35.733.AA [03] AXLE COOLER; (Var) 734156051
35.733.AC AXLE COOLER BYPASS; (Var) 734156051
35.820.AJ [01] FAN REVERSING VALVE INSTALLATION; (Var) 482585103
35.820.AJ [02] FAN REVERSING VALVE INSTALLATION; (Var) 482585103
35.820.AJ [03] FAN RELIEF VALVE WITH REVERSER; (Var) 482585103
39.100.AH COOLING FRAME; (Var) 734840011
39.100.AH COOLING FRAME FAN; (Var) 734840011
39.100.AH REMOTE DRAIN COVER; (Var) 782897043
39.100.AH [01] SIDE PANEL COVER W/O AXLE COOLERS; (Var) 734156051
39.100.AN ARTICULATION JOINT INSTALLATION; (Var) 734840011
39.140.AH [01] COUNTERWEIGHT, MOUNTING; (Var) 782895103
39.140.AM COUNTERWEIGHT, HEAVY DUTY INSTALLATION; (Var) 782895103
39.140.AM RETRIEVAL HITCH PIN; (Var) 482307011
41.101.AJ STEERING COLUMN COVER INSTALLATION; (Var) 734064111
50.100.AC CAB HEATER HOSES; (Var) 782440183
50.100.AP VAR – 782440 – HEATER INSTALLATION W/ A/C; (Var) 782440183
50.100.AP [01] VAR – 782440, HEATER, COMPONENTS; (Var) 782440183
50.104.AO AIR DUCT ASSEMBLY; (Var) 734064111
50.200.AK AIR CONDITIONING, CONDENSER; (Var) 782440183
55.024.AA HARNESS, WIRE TRANSMISSION; (Var) 424224203
55.024.AA [01] TRANSMISSION FILTER MOUNT & LINES; (Var) 424224203
55.047.AB STEERING COLUMN PEDESTAL; (Var) 734064111
55.075.AH [01] WEIGHT LOAD – PL23/26; (Var) 734066003
55.100.BZ [02] ENGINE, REAR, CHASSIS, HARNESS – PG – 2; (Var) 734840011
55.201.AE STARTER MOTOR; (Var) 734840011
55.202.AA [01] GRID HEATER; (Var) 482322301
55.301.AA VAR – 782440 – ALTERNATOR INSTALLATION W/ AIR CONDITIONING; (Var) 782440183
55.302.AH [01] BATTERY COVER; (Var) 734840011; (SN Break) After NKF253002
55.302.AV [02] BATTERY CABLES; (Var) 726013111
55.404.AC ROTATING BEACON; (Var) 782108003
55.404.AQ FRONT LIGHT INSTALLATION, LED; (Var) 734133063
55.404.BA [02] LICENSE PLATE HOLDER, LIGHT; (Var) 482140001
55.404.BM [02] REAR LIGHTS, CASE, EU; (Var) 734133063
55.404.BS [01] LED WORK LIGHT, CAB, 4 FRONT, 2 REAR; (Var) 734133063,782440183
55.510.AH [01] CAB ROOF HARNESS INSTALLATION; (Var) 734064111
TABLE OF CONTENTS
55.510.AH [02] CAB ROOF HARNESS ASSEMBLY; (Var) 734064111
55.510.BB CAB BOTTOM HARNESS INSTALLATION; (Var) 734064111
55.512.AA RADIO INSTALLATION; (Var) 782114003
55.518.AI REAR WINDSHIELD WIPER INSTALLATION; (Var) 734064111
55.518.AT VAR – 734064 – 734065 – WINDSHIELD WASHER RESERVOIR; (Var) 734064111
55.518.AT [01] WASHER BOTTLE COVER INSTALLATION; (Var) 782897043
55.530.AA REAR VIEW CAMERA; (Var) 424234053
55.642.AA [01] EVOLUTION CONTROL MONITOR, DISPLAY; (Var) 734064111
55.642.AA [02] TIRE PRESSURE MONITOR – TPMS; (Var) 734137003
55.991.AD [01] NO TELEMATICS; (Var) 734138003
55.991.AD [01] TELEMATIC SYSTEM; (Var) 469825011
55.991.AD [02] TELEMATIC SYSTEM; (Var) 734138003
71.460.AP AUTOMATIC LUBRICATION SYSTEM; (Var) 782386123
82.300.AZ [01] BUCKET MOUNTING; (Var) 782537231
88.100.39 [07] DIA KIT, WINDSHIELD GUARD, ZBAR,XR
88.100.90 [01] CAB ROOF, KIT
88.100.AC FRONT LICENSE PLATE SUPPORT; (Var) 482140001
88.130.010 FIRE EXTINGUISHER
88.130.30 [01] BACKUP ALARM; (Var) 734840011
90.100.AC HOOD PANELS; (Var) 734840011
90.100.AC HOOD PANELS; (Var) 734840011
90.100.AC HOOD PANELS; (Var) 734840011
90.100.AC [02] HOOD INSTALLATION, RIGHT HAND PANEL; (Var) 734840011
90.100.AC [03] HOOD INSTALLATION, LEFT HAND PANEL; (Var) 734840011
90.100.BB [01] HOOD INSTALLATION; (Var) 734840011
90.100.BB [04] HOOD INSTALLATION; (Var) 734840011
90.100.BB [05] HOOD INSTALLATION; (Var) 734840011
90.116.AA COOLING FRAME SEALS; (Var) 734840011
90.116.AA [02] SIDE PANEL COVER W/ AXLE COOLERS; (Var) 782897043
90.116.AC [03] REAR FENDER, STANDARD; (Var) 782511063
90.116.BE VAR – 782559 – AXLE COOLER SOUND PANEL; (Var) 782559043
90.118.AX CAB GRAB RAIL; (Var) 734064111
90.118.BB STEPS, LEFT SIDE; (Var) 782511063
90.118.BB STEPS, RIGHT SIDE; (Var) 782511063
90.118.BM [02] HEATED GLASS MIRRORS; (Var) 734005003
90.120.AD SEAT, AIR SUSPENSION; (Var) 734085003
90.120.AM [02] SEAT, PREMIUM HEATED AIR SUSPENSION; (Var) 734085003
90.120.AM [03] SEAT, PREMIUM HEATED AIR SUSPENSION; (Var) 734085003
90.120.BB [01] SEAT, PREMIUM HEATED AIR SUSPENSION; (Var) 734085003
90.150.AE CAB MOUNTING PARTS; (Var) 734064111,782777003
90.150.BG CAB ROOF; (Var) 734064111
90.150.BG [01] CAB ROOF, KIT; (Var) 734064111
90.150.BJ AIR CONDITIONING, HEATER COVER ASSEMBLY; (Var) 734064111,782559043
90.150.BJ CAB SKIRTING; (Var) 734840011
90.151.AE CAB CONVINIENCE PACKAGE; (Var) 782777003
90.151.AE SUN CURTAIN INSTALLATION; (Var) 734064111
90.151.AK REAR VIEW MIRROR, INTERNAL; (Var) 734064111
90.154.AA LEFT DOOR INSTALLATION; (Var) 734064111
90.154.AA [01] LEFT DOOR ASSEMBLY; (Var) 734064111

90.156.AL FRONT WINDSHIELD MOUNTING; (Var) 734064111
90.156.AZ RIGHT SIDE WINDOW INSTALLATION; (Var) 734064111
90.156.AZ [01] RIGHT SIDE WINDOW ASSEMBLY; (Var) 734064111
90.160.AR CAB FLOOR BARRIER; (Var) 734064111
90.160.CD FRONT CONSOLE COVER; (Var) 734064111

CNH