MU 40146X-AM Replacement Pump for Multiton TM, M, J Pallet Jack
SKU: MU 40146X-AM
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Product Description
MU 40146X-AM is a direct-fit hydraulic pump for Multiton TM, M, and J series pallet jacks. It restores lifting performance by replacing the jack’s central hydraulic unit. This aftermarket pump is built to OEM specs for fit and durability.
It comes as a complete hydraulic unit – including the pump piston, cylinder, seals, and internal valving.
If your jack is no longer lifting loads, has a leaking cylinder, or is sagging under load, this brand-new pump will solve the problem.
Cross References
This hydraulic pump is also listed under the following part numbers:
Technical Specifications
Warranty
A 1-year manufacturer’s warranty covers this replacement pump against defects in materials or artistry. If you experience any leakage or failure of the hydraulic unit during normal use within one year of purchase, we will repair or replace the pump under the terms of our warranty.
Key Features
New aftermarket hydraulic pump for Multiton TM, M, and J series pallet jacks.
Replaces the main hydraulic unit to restore proper lifting and lowering function.
Precision-machined pump components ensure smooth and efficient lifting action.
Built to OEM specifications for reliable performance and proper fit in the jack.
Direct replacement design fits into the existing hydraulic housing without modifications.
Rugged metal construction handles heavy loads and frequent jack use.
Pre-assembled pump unit for straightforward installation and minimal downtime.
Helps eliminate leaks and lifting issues caused by a worn or damaged pump.
Stock Availability
In stock and ready to ship.
Not Sure Will This Part Fit Your Equipment?
Not sure if this is the right pump for your Multiton jack? Contact us to confirm compatibility. Our team is here to help identify the correct part. Call 832-239-5393 or 1-800-210-8170, email info@palletjackson.com, or use our Live Chat (Monday–Friday, 9 am to 6 pm EST) for guidance. We’ll ensure you get the part that fits your model.
Frequently Asked Questions
Q: Does the pump come filled with hydraulic oil?
Answer: No, the pump is shipped dry (without oil) due to shipping regulations and to prevent spillage. After installing the new pump, you will need to fill the reservoir with hydraulic jack oil (typically ISO VG32 or similar). Open the fill plug on the pump and add oil until it reaches the proper level. Always use clean hydraulic oil and keep contaminants out during the filling process.
Q: How do I bleed or remove air from the new pump after it has been installed?
Answer: Bleeding the new pump is simple. Once you’ve filled it with oil, operate the jack with no load a few times to let air escape. Pump the handle up and down repeatedly, then release (lower the jack) to expel any trapped air. Do this cycle a couple of times. Any air that is pushed back into the reservoir will be expelled from the system. There is no separate bleed screw; the system self-bleeds through regular use.
Q: What parts are included with this pump assembly?
Answer: It includes the entire hydraulic cylinder and pump mechanism, pre-assembled with all internal valves and seals. It does not include the handle or the handle yoke/lever components – those external pieces are reused from your old jack. Essentially, you are getting the complete hydraulic power unit, which is the part that holds pressure and lifts the forks. Any small mounting pins or clips should be reused from your jack or replaced if you have new ones on hand.
Q: Is this pump pre-assembled?
Answer: Yes, it comes as a complete unit ready for installation.
Q: Does this aftermarket pump perform the same as the original?
Answer: Yes. It is designed to meet or exceed the specifications of the OEM Multiton pump. Many customers report that after installation, their pallet jack lifts and holds loads just as it did when new. The materials and build quality are of a high standard. We stand behind its performance with a one-year warranty.
Frequently Bought Together
Customers who buy the MU40146X-AM replacement pump may also be interested in these products:
Explore our complete Multiton parts catalog for more options compatible with your equipment.
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