Part of the Yanmar Parts Manuals.
All 42 pages of this Yanmar 4TNV88-QTBC Parts Catalog cover a single engine: the diesel unit fitted to the TB145 compact excavator. Inside, you get factory exploded views paired with full part numbers for every engine system, cylinder block through crankshaft, fuel injection pump, governor, injector, and complete gasket set. Each assembly is indexed and cross-referenced so you can identify the exact component before you pick up the phone. Need oversize piston rings? The catalog specifies the 0.25mm oversize dimension; the oil pressure switch is rated at exactly 0.5KG activation pressure. No more squinting at worn castings trying to guess what you need. Bookmarked and keyword-searchable, this PDF lets you jump straight to any assembly on your laptop, tablet, or phone and get the right Yanmar part number on the first call.
Other editions of this manual
What's Inside This Parts Manual
| System | Pages | Key Topics |
|---|---|---|
| Cylinder Block | 6-7 | Cylinder Block Assy, Camshaft Bush, Main Bearing Set Repair Part, Thrust Metal, Cylinder Head Gasket, Spacer, Main Metal Under-Sized Part, Thrust. Over-Sized Part Metal |
| Gear Housing | 8-9 | Gear Housing Assy, Oil Seal, Pump Cover Assy, Lub. Oil Pump Cover, Relief Valve, Spring, Gear Case Frange, Filler Cover |
| Flywheel Housing & Oil Sump | 10-11 | Flywheel Housing, Flywheel Cover Cap, Oil Sump Spacer, Lub. Oil Sump Assy, Oil Seal Case Assy, Oil Seal, Gasket.liquid Optional Part |
| Cylinder Head & Bonnet | 12-13 | Cylinder Hed Assy, Valve Repair Part Guide, Intake Valve, Exhaust Valve, Valve Spring, Spring Retainer, Valve Stem Seal, Valve Cap |
| Suction Manifold & Air Cleaner | 14-15 | Breather Pipe, Int Manifold, Int.manofold Gasket, Air Heater, Air Heater Gasket, Gasket, Bend, Intake Pipe |
| Exhaust Manifold & Silencer | 16-17 | Exhaust Manifold, Exhaust Manifold Gasket, Silencer Pipe, Silencer Gasket, Silencer |
| Camshaft & Driving Gear | 18-19 | Tappet, Push Rod, Camshaft Assy, Thrust Metal, Camshaft Gear, Idle Gear Shaft, Idle Gear Assy, Idle Gear Repair Part Bush |
| Crankshaft & Piston | 20-21 | Crankshaft Assy, Crankshaft Gear, Crankshaft V-Pulley, Flywheel Assy, Ring Gear, Piston Assy, Piston Ring Set, Connecting Rod Assy |
| Lub.Oil System | 22-23 | Lub. Oil Dipstick, Dipstick Guide, Gasket, Lub. Oil Pipe Assy, Lub. Oil Switch, Joint Bolt Assy, Joint PT1, Oil Cooler Assy |
| Cooling Water System | 24-25 | Water Pump Assy, Gasket, Plate, Joint, Thermo. Case Gasket, Cooling Water Pump V-Pulley, V-Belt, Cooling Fan |
| Fuel Injection Pump | 26-27 | Joint, Stopper, Dilevery Valve Assy, Spring, Delivery Holder, Cooling Water Joint, Lifter, Timer Set |
| Governor | 28-29 | Case Packing, Packing, Spring, Regulator Lever, Shaft Retainer, Stop Solenoid, Case Cover |
| Fuel Injection Valve | 30-31 | Fuel Injector, Nozzle Assy, Nozzle Holder Assy, Nozzle Spring, Nozzle Spring Seat, Stop Plate, Injection Pipe Retainer, Retainer |
| Fuel Line | 32-33 | Fuel Filter Bracket, Fuel Oil Filter, Fuel Oil Pipe Assy, Fuel Pipe, Fuel Pump, Separator Assy, Retaining Ring, Element |
| Starting Motor | 34-35 | Starter, Pinion Shaft, Armature Assy, Field Coil Assy, Brush, Rear Cover, Brash Holder Assy, Brush Spring |
| Generator | 36-37 | Belt Adjuster, Alternator, Rotor Assy, Bearing Cover, Drive Flame Assy, Plate, Rear Flame Assy, Pulley |
| Gasket Set | 38-42 | Gasket Set Optional Part, Cylinder Head Gasket, Valve Stem Seal, Nozzle Protector, Nozzle Seat, Cover Gasket, Gasket, Exhaust Manifold Gasket |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Hose dimensions (Cooling Water System) | 7mm x 225mm | p. 25 |
| Oil pressure switch activation pressure | 0.5KG | p. 23 |
| Piston ring oversized dimension | 0.25 | p. 21 |
