EQ Systems Replacement Hydraulic Pump 3170KS | AJ/AM Single & Dual Leg Trailer Jack Systems

Replace the pump in your AJ or AM single-leg or dual-leg trailer jack system with the EQ Systems Hydraulic Pump Assembly 3170KS — a single-function pump used on AJ single leg, AJ dual leg, AM single leg and AM dual leg systems. Call EQ Systems at 800-846-9659 before ordering: this replacement pump may require additional items to be ordered. Available at The RV Surplus.

⭐ Read the Model Number Off Your Existing Pump BEFORE Ordering

The pump model number is on the sticker on the pump itself, and it is the same as the SKU here. That number is the only reliable way to order: the same-looking pump can carry a different reservoir, cover, motor and manifold depending on the system it was built for.

⭐ Application: AJ / AM Trailer Jack Systems (Single-Function)

The 3170KS is a single-function pump used on:

• AJ single leg
• AJ dual leg
• AM single leg
• AM dual leg

⭐ Matching Parts

• Reservoir: 4246K
• Manual override standard

⭐ Before You Replace a Pump — Check Power First

Most pump complaints turn out to be power, not pump. Depending on the pump and motor combination, up to 160 amperes at a minimum of 10.5 VDC can be required to run the motor, through minimum 4 gauge power and ground cables (larger on long runs). Some lithium batteries cannot deliver that running amperage.

• Check the ground to the pump stud for tightness and corrosion
• Check the positive cable to the motor solenoid for tightness and corrosion
• If the motor runs but nothing moves, look at the fluid level and trapped air before condemning the pump

Setting Up a New Pump

Mount the pump where the fill and breather cap can be reached for filling. Fill with Dexron III ATF to about one inch below the top of the reservoir with the jacks fully retracted (level rises as the jacks retract). Remove the flush shipping plug and fit the vented breather cap before running the system, or the jacks will operate erratically. Manual override is standard on every EQ Systems pump.

Documents

• Reservoir Replacement Chart (PDF)
• Cover Replacement Chart (PDF)
• Motor Replacement Chart (PDF)
• Motor and Solenoid Troubleshooting for EQ Hydraulic Pumps (PDF)
• Required Maintenance Items for EQ Hydraulic Jacks & Slide Systems (PDF)

Other Replacement Pumps

• Pump 3201KS — also for AJ/AM single/dual systems
• Pump 3200KS — for TJ single leg
• Pump 2542KS — for multi-function systems (leveling + slide)
• Pump 3195KS — for multi-function systems
• Pump 3218KS — for multi-function systems (3.7 MTE)

Related Systems (Use This Pump)

• AM 2/24 Dual Leg
• AM 1/24 Single Leg
• AJ 2/24 Dual Leg
• AJ 1/20 Single Leg

90-Day Warranty

Backed by EQ Systems' 90-day replacement part warranty. Check documentation for full terms.

Specifications

• Brand: EQ Systems
• Model: Hydraulic Pump Assembly 3170KS
• SKU: 3170KS
• Type: Single-function pump
• Applications: AJ single/dual leg, AM single/dual leg trailer jack systems
• Matching Reservoir: 4246K
• Manual Override: Standard
• Fluid: Dexron III ATF
• Power Requirement: Up to 160A at 10.5 VDC minimum
• Cable Requirement: 4 gauge minimum power and ground
• Warranty: 90-day replacement part warranty