Rear hydraulic remotes mounted on a compact tractor near the three-point hitch

Tractor Hydraulic Remotes (Rear Remotes / SCVs) Guide

Last updated: 2/2026

Hydraulic remotes are the quick-connect coupler sets on the rear of your tractor that let you power hydraulic cylinders and motors on rear-mounted implements. If you run a grapple, hydraulic top link, offset mower, angle blade, backhoe, or log splitter off the back of your machine, you are using rear remotes.

This guide covers what rear remotes are, how they compare to a third-function valve, how many you actually need, which implements require them, a high-level installation overview, pressure testing tools, leak prevention, and sealant best practices. No calculators or downloads, just clear reference material for compact and utility tractor owners.

What Are Tractor Hydraulic Remotes?

Tractor hydraulic remotes are also called rear remotes or SCVs (Selective Control Valves). They are quick-connect hydraulic coupler sets mounted at the rear of the tractor that provide pressure and return lines to operate hydraulic cylinders or motors on rear implements.

Each remote provides one hydraulic circuit with A and B ports (extend and retract)
Most tractors support 1 to 3 rear remote sets, some larger machines allow more
Typical flow per remote: 5 to 15 GPM depending on the tractor's hydraulic pump
Typical operating pressure: 2,000 to 3,000 PSI
Adding more valve sections does NOT increase pump output. Flow is split between active circuits.

Rear Remotes vs Third Function

Many tractor owners confuse rear remotes with a third-function valve. They serve different purposes and are located in different places on the machine.

Feature	Rear Remotes	Third Function
Location	Rear of tractor	Front loader
Typical Use	Top link, angle blades, backhoe	Grapples, front hydraulic tools
Controlled By	Rear levers or electric switches	Loader joystick button

Many tractors have both: a third function for front implements and rear remotes for 3-point hydraulic attachments. They are independent circuits that draw from the same pump.

How Many Rear Remotes Do I Need?

Match the number of remote sets to the number of independent hydraulic movements you want to control.

1 Set

Hydraulic top link
One angle blade cylinder
Single cylinder function

2 Sets

Top + tilt setup
Offset + tilt mower
Two-function implements

3+ Sets

Multi-cylinder implements
Complex rear hydraulic tools
Backhoe with independent boom, stick, and bucket circuits

Each remote set equals one independent hydraulic circuit. Adding more sets does not add more flow, it divides the existing pump output when multiple circuits run simultaneously.

What Implements Require Rear Hydraulic Remotes?

Material Handling

Rear log splitters
Hydraulic grapples (rear-mounted)

Land & Mowing

Offset/side-shift mowers
Hydraulic angle rear blades
Flail mowers with tilt/shift

Ground & Utility

Hydraulic top link
Top-and-tilt systems
Post drivers
Backhoe controls (varies by setup)

Related Guides

Installation Overview (High-Level)

This is an educational overview of what rear remote installation involves. Always follow the specific instructions from your valve kit manufacturer and your tractor's service manual.

Preparation

Park on level ground
Shut engine off
Relieve hydraulic pressure
Disconnect loader if required for access

Valve Assembly

Install valve bank per manufacturer instructions
Lubricate all O-rings before assembly
Install fittings to correct torque specifications

Mounting

Secure valve bracket near the 3-point hitch or loader valve area
Ensure the mounting location allows clear hose routing

Hose Routing

Connect Power Beyond (PB) pressure line from tractor to valve inlet
Connect tank/return line from valve to tractor reservoir
Route all hoses away from heat sources and pinch points

Controls

Install manual lever or electric solenoid controls
Add inline fuse for electric solenoid systems
Route wiring away from moving parts

Testing

Refill hydraulic fluid to proper level
Cycle each remote slowly through full range of travel
Check every fitting and connection for leaks

Safety Warning

Never check for hydraulic leaks with bare hands. Hydraulic fluid under pressure can penetrate skin and cause injection injuries that require immediate emergency medical treatment. Use cardboard or paper to detect leaks, not your fingers.

Tools to Test Hydraulic Remote Pressure

Tool	Purpose	Typical Cost
Pressure Gauge Kit (0-5,000 PSI)	Measure system pressure at the coupler	$50 - $150
Tee Adapter	Dual-port testing without disconnecting lines	$20 - $40
Flow Meter (optional)	Measure GPM through the circuit	$200+

Basic Pressure Test Steps

1Attach pressure gauge to one of the rear remote coupler ports
2Warm the tractor to normal operating temperature
3Test at low RPM first, then increase to rated RPM
4Compare the reading to the manufacturer specification in your service manual

Preventing Hydraulic Remote Leaks

Post-Repair Best Practices

Always use new O-rings during reassembly
Lubricate O-rings with clean hydraulic oil before installation
Do not over-torque fittings (follow the torque spec for each fitting type)
Depressurize the system before reconnecting any lines
Clean couplers thoroughly before connecting

Routine Maintenance

Inspect hoses weekly for abrasion, cracking, or bulging
Replace any cracked or damaged lines immediately
Change hydraulic fluid and filters per the manufacturer schedule
Cap unused coupler ports to keep out dirt and moisture

Usage Habits

Cycle remotes slowly during initial tests after any service
Avoid shock loads that spike pressure beyond system rating
Disconnect and store implements overnight to relieve standing pressure on seals

Best Sealants for Hydraulic Fittings

Fitting Type	Recommended Sealant
NPT threads	Anaerobic hydraulic sealant or PTFE paste
JIC flare fittings	Anaerobic sealant only
O-ring boss (ORB)	No sealant (lubricate O-ring only)

Application Tips

Apply sealant to male threads only
Start two threads back from the end to prevent sealant from entering the hydraulic circuit
Allow proper cure time before pressurizing the system
Avoid Teflon tape on JIC flare fittings and O-ring boss fittings (it can shred and contaminate the system)

Frequently Asked Questions

What are tractor hydraulic remotes?

Hydraulic remotes (also called rear remotes or SCVs) are quick-connect hydraulic coupler sets mounted at the rear of a tractor. Each set provides a pressure port and a return port that let you control a hydraulic cylinder or motor on a rear-mounted implement independently from the tractor's main hydraulic functions.

How many rear remotes do I need?

One set handles a single hydraulic function like a hydraulic top link or an angle blade cylinder. Two sets cover implements that need two independent movements such as a top-and-tilt system. Three or more sets are for complex multi-cylinder implements. Match the number of remotes to the number of independent hydraulic movements you need to control.

What is the difference between rear remotes and third function?

Rear remotes are hydraulic coupler sets at the rear of the tractor controlled by rear-mounted levers or electric switches. A third function is a hydraulic circuit routed to the front loader and typically controlled by a button on the loader joystick. Many tractors have both: third function for front grapples and hydraulic tools, and rear remotes for 3-point hydraulic attachments.

Can I add rear remotes to any tractor?

Most compact and utility tractors can accept aftermarket rear remote kits as long as the tractor has a hydraulic pump with enough flow and a Power Beyond (PB) port or open-center circuit to tap into. Check your tractor's hydraulic capacity and available ports before purchasing a kit. Some tractors require an adapter plate or different valve configuration.

What pressure should my rear remotes produce?

Most compact and utility tractor hydraulic systems operate between 2,000 and 3,000 PSI. The exact pressure depends on your tractor model and pump specifications. Always compare your gauge reading to the manufacturer's spec listed in your operator's manual. Low pressure usually indicates a pump issue, relief valve setting, or internal leak.

Why are my hydraulic remotes leaking down?

Leaking down (cylinders slowly retracting or extending on their own) is usually caused by a worn spool seal in the control valve, a leaking cylinder seal, or a coupler that is not fully seated. Check each component individually by isolating the circuit. A faulty check valve in the remote valve assembly is another common cause.

Do I need power beyond to install rear remotes?

Power Beyond (PB) is the most common way to supply pressurized hydraulic oil to an add-on remote valve. If your tractor does not have a PB port, you may be able to tee into the loader circuit or use a tandem pump setup, but this requires careful planning to avoid starving the existing circuits of flow. Consult your tractor's hydraulic schematic first.

Can I run multiple hydraulic cylinders at once?

You can operate multiple remotes simultaneously, but total flow is limited by the tractor's hydraulic pump output. Running two or more circuits at the same time splits the available GPM between them, which slows each function. For demanding multi-circuit work, confirm your pump's rated GPM can support the combined flow requirements.