Hunting down replacement components for your wheel loader is simple with the official Yanmar V4-5D, V5-D, 4TNV88-NKAH parts catalog pdf. This 103-page factory reference (OEM #0CK20-M41900EN) breaks down the entire 2006-2017 machine into clear, exploded views. You get detailed wiring diagrams and complete parts lists for everything from the hydrostatic pump to the main lift cylinders. Open to any assembly and find exact part numbers, quantities, and interchangeability marks for every single bolt and bracket. Verify your air cleaner system takes the 1AP16.0 O-ring, and confirm you need M10X 25 bolts for the silencer bracket before calling the dealer. Ordering the wrong component wastes days of shop time. Download this bookmarked file straight to your phone, match the exploded view to your machine, and get the right part the first time.
What's Inside This Yanmar V4-5D Parts Manual
| System | Pages | Key Topics |
|---|---|---|
| Reference Materials | 2-6 | Ref. No., Lev. (Level), Interchangeability Mark, Effective Machine No., Remarks Mark, Parts No. Index |
| Label | 9 | Assy, Model, Caution, Battery, Fuel, Tag Assy |
| Safety Label | 10 | Label, Tag Assy, Caution, Loading, Battery |
| Back Mirror | 11 | Stay, Mirror, Mirror Comp., Washer, Nut, Bolt |
| Silencer | 12 | Pipe, Tail, Assy, Cover, Bracket Assy, Silen, Gasket |
| Air Cleaner & Engine Drain | 13 | Cleaner Assy, Air, Air Hose, Element, Valve, Unloader, Hose, L.O.DRAIN |
| Foot Accelerator | 14 | Lever, Pedal Assy, Throttle, Rod Assy, Link, Spring, Return, Ball Link |
| Engine Mount | 15 | Bracket, Engine, Absorber, Shock, Stopper, Washer, Bolt |
| Radiator | 16-17 | - |
| Fuel Tank | 18 | - |
| Battery | 19 | - |
| Wiring | 20 | - |
| Electric Part | 21-22 | - |
| Electric Part(Auto Lebeller) | 23 | - |
| Clutch Housing & Drive Shaft | 24 | - |
| Transfer Case | 25 | - |
| Spiral Bevel Gear | 26 | - |
| Differential Gear | 27 | - |
| Axle Shaft | 28 | - |
| Final Gear | 29 | - |
| Axle Case | 30 | - |
| Axle Holder | 31 | - |
| Center Brake | 32 | - |
| Tire & Diske | 33 | - |
| Snow Tire(Optional) | 34 | Washer, Tire Assy, Disk, Valve, Tire, Tire Kit |
| Tire(Plated)(Optional) | 35 | Washer, Assy, Valve, Disk, Kit |
| Inching Pedal | 36 | Pedal Assy, Pad, Rod Assy, Link Rod, Boot, Ball Link |
| Braket Pedal | 37 | Pedal, Cam Assy, Link Rod, Shaft, Spring, Bush |
| Park Brake Lever | 38 | Lever, Cam, Boot, Bush, Grip, Plate |
| Hyd.Oil Control Lever | 39 | Lever Assy, Bush, Pin, Knob Assy, Cable, Collar |
| Rd Valve Control | 40 | Lever Assy, Cable, Pin, Knob, Washer, Bolt |
| Steering Wheel & Column | 41 | Handle Assy, Column Assy, Shaft, Bearing, Holder, Cap |
| Control Cover | 42 | Stay Assy, Lever, Boot, Rubber, Bush, Grommet |
| Control Cover(3Rd) | 43 | Stay Assy, Lever, Boot, Rubber, Grommet, Bush |
| Front Frame | 44 | Bolt F Set, Washer, Nut, Pin, Collar, Frame Assy, Front |
| Rear Frame | 45 | Frame Assy, Rear, Bush, Base, Nipple, Bolt, Washer |
| Operation Frame & Cover | 46 | Frame Assy, Operator, Cover, F |
| Seat & Bonnet | 47 | - |
| Bonnet Soundproof Material | 48 | - |
| Frame Soundproof Material | 49 | - |
| Canopy | 50 | Mirror Assy, Assy, Roof Assy, Frame Assy, Prop Assy, Seal |
| Cabin | 51-52 | Mirror Assy, Assy, Glass, Trim, Handle, Cushion, Seal |
| Cabin Door | 53-54 | Door Assy, Key Set, Cylinder, Body, Door, Glass, Handle, Latch L |
| Electric Part & Wiper(Cabin) | 55 | Electric Parts Assy, Harness, Wire Cabin, Switch, Wiper, Wiper Assy, Motor |
| Heater(Cabin) | 56 | Assy, Elbow, Connector, Hose, Duct, Valve Assy |
| Lift Cylinder | 57 | Cylinder Assy, Lift, Seal Set, Head, Tube Assy, Piston, Rod Assy |
| Dump Cylinder | 58 | Cylinder Assy, Dump, Seal Set, Head, Piston, Rod Assy, Tube Assy |
| Power Steering Cylinder | 59 | Cylinder Assy, Seal Set, Head, Piston, Tube Assy, Steering, Rod Assy |
| Hyd.Oil Pump | 60 | Pump Assy, HST, Washer, Spring, Bolt |
| 67.(48A)Hyd.Oil Pump(Component Part) | 61-62 | Piston Pump Assy, Rotary Group, Control, Hydraulic, Relief Valve, Solenoid |
| Hyd.Oil Motor | 63 | Motor Assy, HST, Gasket, Motor, Bolt |
| 68.(49A)Hyd.Oil Motor(Component Part) | 64-65 | Housing Assy, Rotary Group, Cylinder Block Assy, Control, Piston, Solenoid |
| Steering Unit | 66 | Steering Assy, Roll Assy, Orbital, Gerotor, Parts Set, Control, Valve Compl. |
| Control Valve(2-Way) | 67 | Valve, Control, F Block Assy, Ed Block Assy, L Block Assy, Seal Set |
| Control Valve(3-Way) | 68 | Valve 3-Way, F Block Assy, Ed Block Assy, L Block Assy, Valve, O.L.R., Seal Set |
| Hyd.Oil Tank | 69 | Tank Assy, Reservoir, Gauge, Oil Level, Filter, Suction, Flange Assy |
| Filter & Pipe Fitting | 70 | Filter, Oil, Element, Line, Elbow, Joint Assy, Connector |
| Hyd.Oil Piping(Hst) | 71-72 | Cooler Assy, Oil, Connector Assy, Pipe, Suction, Main |
| Hyd.Oil Piping(Loader) | 73 | Pipe Assy, Lift, Plate, Hose, Rubber, Clamp, Collar |
| Hyd.Oil Piping(3Rd) | 74 | Cap, O-Ring, Connector, Pipe Assy, 3RD, Hose, Rubber |
| Lift Arm | 75 | Arm Assy, Lift, Seal, Dust, Bush, Pin, Nipple, Grease |
| Loader Link | 76 | Plate, Pin Lock, Pin, Link Assy, Seal, Dust, Bush, Bell Crank Assy |
| Bucket | 77 | Assy, Craw, Bolt, Washer, Spring, Nut |
| 69.(60A)Bucket(0.5) | 78 | Bucket Kit, Bucket Assy, Craw, Bolt, Washer, Spring, Nut |
| 70.(60B)Bucket(0.6) | 79 | Bucket Kit, Bucket Assy, Craw, Bolt M14X 35 Plated, Washer, Spring 14, Nut |
| Attach Holder(Attachment) | 80 | Holder, Attachment, Pin, Spring, Bush, Nipple, Grease R1/8 |
| Bucket&Mania Fork(Attachment) | 81 | Bucket Assy, Fork Assy, Manure, Washer, Spring 20, Nut, Tine |
| Pallet Fork(Attachment) | 82 | Fork Assy, Pallet, Plate, Side, Lever, Pin, Fork, Spring |
| Window Washer(Optional) | 83 | Tank, Washer, Hose, Nozzle, Bracket, Harness, Wire |
| Tool(Optional) | 84 | Assy, Wrench Assy, Driver, Screw, Bag, Spanner, Gun, Grease |
| Unique Tire(Optional) | 85 | Washer, Tire, Unique, Bolt, M20X 40 Plated, Tire Kit, No-Punc |
| Bucket(0.8)Kit(Optional) | 86 | Kit, Label, Assy, Craw, Bolt M14X 35 Plated, Washer, Spring 14 |
| Bucket(0.9) Kit(Optional) | 87 | Kit, Label, Craw, Bolt M14X 35 Plated, Assy, Nut, M14 |
| Bucket(0.8)(Plating) Kit(Optional) | 88 | Kit, Label, Assy, Edge 1690, Bolt, M14X35, Nut, 14 |
| Bucket(0.9)(Plating) Kit(Optional) | 89 | Kit, Label, Assy, Craw, Bolt M14X 35 Plated, Nut, M14 |
| Bucket(0.5)(Quick Holder)Kit(Optional) | 90 | Bucket Kit 0.5m3, Quick-Holder Mount, Bolt M14X35, Claw Edge, Label, Nut M14 |
| Bucket(0.6)(Quick Holder) Kit(Optional) | 91 | Bucket Kit 0.6m3, Quick-Holder Mount, Bolt M14X35, Claw Edge, Label, Nut M14 |
| Bucket(0.8)(Quick Holder) Kit(Optional) | 92 | Bucket Kit 0.8m3, Quick-Holder Mount, Bolt M14X35, Claw Edge, Label, Nut 14 |
| Bucket(0.9)(Quick Holder) Kit(Optional) | 93 | Bucket Kit 0.9m3, Quick-Holder Mount, Bolt M14X35, Claw Edge, Label, Nut 14 |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Fuse Rating | 15A | p. 20 |
| Bulb Rating | 12V 55W | p. 21 |
| Bolt Dimension | M10X 25 | p. 12 |
| O-Ring Size | 1AP16.0 | p. 13 |
| Pipe Dimension | 7X 130 | p. 16 |
| Hose Clamp Size | 41 | p. 16 |
| Bushing Dimension | 25X15 | p. 14 |
| Gear Spec | Z=26T | p. 25 |
| Washer Dimension | 11X40.5X9 | p. 25 |
| Bearing Model | 6009 | p. 25 |
Yanmar V4-5D Common Problems This Manual Covers
Yanmar V4-5D wheel loader total loss of gears and hydraulics after shifting attempt p. 25
Inspect the transfer case exploded view on page 25 to locate the shift mechanism components. Identify the exact part number for the Z=26T gear and the 11X40.5X9 washer. Cross-reference the 6009 bearing model to order the correct replacement internals for your serial number.
Manual Section: Transfer CaseHard cold starts with fuel present but no heating from the glow plug circuit p. 20
Check the wiring diagram on page 20 to trace the glow plug circuit components. Locate the main harness and verify the part number for the 15A fuse block. Order the exact replacement glow plugs listed in the electrical components breakdown to fix the starting issue.
Manual Section: WiringNeed the exact replacement o-ring part number for a leaking engine air cleaner drain p. 13
Check the air cleaner assembly drawing on page 13. Find the reference number for the unloader valve and locate the matching 1AP16.0 size O-ring in the parts list. Verify the interchangeability mark before ordering the replacement seal for your specific machine serial number.
Manual Section: Air Cleaner & Engine DrainMissing mounting hardware on the exhaust silencer bracket and excessive exhaust rattle noise p. 12
Review the silencer bracket assembly on page 12 to identify the missing fasteners. Locate the specific part number for the M10X 25 bolt and its corresponding exhaust gasket. Order the exact factory hardware to secure the tail pipe correctly and eliminate the noise.
Manual Section: SilencerBlown exterior work lights and inability to find the correct replacement bulb specification p. 21
Inspect the electric part diagrams on page 21 to find the work light assembly. Match the reference number to the parts list to confirm the 12V 55W bulb requirement. Order the designated bulb part number along with any required mounting brackets to restore illumination.
Manual Section: Electric PartFrequently Asked Questions
How do you fix V4-5D wheel loader total loss of gears and hydraulics after shifting attempt?
Inspect the transfer case exploded view on page 25 to locate the shift mechanism components. Identify the exact part number for the Z=26T gear and the 11X40.5X9 washer. Cross-reference the 6009 bearing model to order the correct replacement internals for your serial number.
How do you fix hard cold starts with fuel present but no heating from the glow plug circuit?
Check the wiring diagram on page 20 to trace the glow plug circuit components. Locate the main harness and verify the part number for the 15A fuse block. Order the exact replacement glow plugs listed in the electrical components breakdown to fix the starting issue.
How do you source the correct O-ring for the V4-5D air cleaner unloader valve?
Check the air cleaner assembly drawing on page 13. Find the reference number for the unloader valve and locate the matching 1AP16.0 size O-ring in the parts list. Verify the interchangeability mark before ordering the replacement seal to restore proper air cleaner function and prevent engine damage from debris ingestion.
How do you identify the correct seal kit for a leaking V4-5D lift cylinder?
Open the lift cylinder section on page 57. Locate the Seal Set part number for the lift cylinder head and piston. Order the exact seal kit listed under your serial number range — the Seal Set covers both head and piston seals to stop oil weeping from the lift cylinder and restore bucket lifting force.
How do you identify HST pump parts for a V4-5D wheel loader with no drive?
Turn to the HST pump section on page 60. Find the HST Pump Assy part number and verify the spring and washer specifications listed in the component table. Cross-reference the solenoid part number on pages 61-62 if the transmission is not engaging correctly before ordering pump internals.












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