R4A51 Transmission parts, repair guidelines, problems, manuals
Transmission general data
| Number of gears | Transmission Type | Drive | ATF (full capacity) L | ATF (change) L | ATF type |
|---|---|---|---|---|---|
| 4 | AT | RWD | 9,6 | 4 | SP III |
The 4-speed automatic transmission R4A51 (V4A51) was used since 1997 for RWD Montero models with engine capacity from 3-liters. In a couple of years, the new 5-speed R5A51 (2000-2006) and AWD V5A51 versions were launched. This family of automatic transmissions competed with RWD AW30-40LE by Aisin.
What are you looking for?
Overhaul Kit | Friction Kit | Friction | Steel Plate | Steel Kit | Band | Solenoid Kit | Solenoid EPC | Solenoid TCC | Pump | Shaft | Drum | Valve body | Torque converter | Hub | Piston | Piston Kit | Planetary Gear | Filter | Gasket | Bushing | Seal | Bearing | Pressure Plate | Stator | Differential | Retainer | Inhibitor Switch | Instruction manual | TOOLS & ACCESORIES | Sensor
Which cars run with this gearbox?
| Brand | Model | Year | Type | Engine |
|---|---|---|---|---|
| Mitsubishi | MONTERO XLS/MONTERO SPORT | 01-04 | 4 SP R/4WD | V6 3.0L 3.5L |
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- Oils, NS2, NS-2, ATF, Oil
- Bands, Brake band, Lining
- Bearings, brg, Mainbearing
- Cover Bolt, Cover Bolts, Mounting Bolt, Mounting Bolts, Pan Bolt, Pan Bolts, stud, studs, Split Pin
- Casing, casings, cases
- Circlips, Clip, Detent Cable Clip, Line Clip, Linkage Clip, Retainer Clip, Snap Ring, Snap Rings, Retaining Ring, Cover Retaining Ring, Retaining Ring, Circlip Kit, Kit Circlips, Kit Snap Ring, Kit Snap Ring,
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- Electrics, Electric, Electronic, Electronic Shift, Electronics, Pin Wiring, Relay Control Switch, Neutral Relay, Main Relay
- Filters, Filter Cartridges, Filter Cartridge, Oil Pan Filter, Inlet, Filter Kit
- Friction Discs, Frictions, fric, Friction Disc, Friction, Friction Plate, Friction Ring, fric., Clutch Plate, Friction Lining
- Friction kits, friction pack, friction set, High Energy Clutch Friction Module, Friction clutch
- Gaskets, gsk, gskt, , Cover Gasket, Cover Gaskets, Case Gasket, Case Gaskets, Filter Gasket,Filter Gaskets
- Gasket Pan, Pan Gaskets, Pan gasket, Filter Gasket,Filter Gaskets
- Hubs, Hub Insert
- manuals, Technical manual, Repair manual, service manual, Manual, VIDEO & AUDIO, tapes
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- Pans, Crankcase, Oil Pan
- Pinions, Pinion Gear, Pinion Pin, Pinion Gear Shaft,
- Pipes, Modulator Pipe, Inlet Pipe, feed Pipe, oil pipe
- Planetary Gears, Planetary Gear Set, Planetary Gear Sets, Planet, Planetary Assembly, Planetary Component, Reaction Carrier, Planet
- Pumps, Rotor, Vane, Vanes, Kit Pump Vane/Ring
- Retainers, Spring Retainer, Plug Retainer, Bearing Retainer
- Seals, Metal clad seal, Lip Seals, Connector Hole Seal, Lip Seal, Main Seal, Radial Lip Seal, Main Seal, Manual Seal, Oil Feed Seal, Side Cover Seal, Seal Cooler, Seal Oil Cooler, Case Seal
- Sensors
- Shells
- solenoid, Shift Solenoid, Kickdown Solenoid, Control Solenoid Support, Solenoid Retainer, Interlock Solenoid, Solenoid Switch
- EPC, Pressure Solenoid, Pressure Control Solenoid, Pressure Solenoid, PWM solenoid, Pressure Regulator Solenoid
- spragg, Sprags, Mechanical Diode, Sprag Assembly, Sprag Cartridge, One Way Clutches, One Way Clutch, Roller Clutches, Roller Clutch, Low/Rev Diode, Retaining Plates, Retaining Plate, Accordion Spring, OWC
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- Steel Plates, steel, Steels, steel disk
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- Manifolds, Switch Manifold, Switch Manifolds, Pressure Switch Manifold, Pressure Switch Manifolds, Switch, Manifold
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- Tool kits, Alignments, Alignment, Reamers, Reamer, Tool kit, Tool, Pressure Gauge, Clutch Aligning Tool, Clutch Removal Tool, Clutch Tool Supplement, Kit Installer, Air Test Plate, ADJUSTMENT TOOL, Thread Tap, Remover
- Throttle Valve, Timing Valve, Operating, Relief Valve, Safety Valve, Control Valve, AFL Valve, Limit Valve, Actuator Feed Limit Valve, AFL Valve
- VB plate, Valve body plates, Valve body plate, ValveBody, V/Body, valve-body, v body, v-body, v/b, Orifice, Hydraulic control unit, HCU
- Overlap Control Valve Kit, Pressure Regulator Valve, Switch Valve Plug, Actuator Feed Limit
Technical issues and repair guidelines
Commonly, planned overhaul of these transmissions consists in cleaning of the valve body, repair of the torque converter and ATF change. These measures are assumed to be enough for another 2-3 years of proper operation, if gaskets are intact and the oil pressure in packages conforms to requirements.The reassembly of this transmission usually includes not only the repair kit of gaskets and seals, but also the kit of frictions and the kit of steel discs. A rather long-lived clutch of the torque converter lock-up may be exposed to wearout. In some cases, it may operate until 200 thousand kilometers. The untimely replacement of the friction component results in beatings, damage of the pump seal, and later breakdown of the pump bushing.
Typical problems of R4A51 (V4A51)
Filters are clogged with wear-out products and there are two modifications of filters for transmissions applied in RWD cars. The planetary gear (O.D.) rapidly gets out of order under the condition of extreme and frequent loads close to the torque limit. In the process of reassembly, the valve body is washed and may operate properly till the end of the car lifespan. During the first overhaul, specialists replace some solenoids that operate very intensively, namely EPC solenoid and the solenoid of the clutch lock of the V5A51 torque converter operating in the dirtiest and hottest fluid. Input shaft sensors get out of order because of old age, oil contamination by steel shavings, and overheating It is recommended to replace all frictions and the brake band in case of a long-term operation with burnt fluid.
Instruction manuals and useful links Suggest your link
| Link type | Source | Description |
|---|---|---|
| www.at-manuals.com | Repair manual R4A51 | |
| www | www.at-manuals.com | Scheme R4A51 |
| drive.google.com | Repair manual R4A51, V4A51, V5A51 | |
| Sonnax | Valve Body Layout V5A51 |