What This Pump Does
This 24V DC electric grease pump provides on-board automatic lubrication for trucks, trailers, and mobile machinery. Mounted on the frame and plumbed to the chassis lube points, it delivers metered doses on a programmable timer while the vehicle works, replacing manual greasing rounds. For architecture comparisons, see the automatic grease pump systems page; this pump sits in the wider automatic lubrication family.
Technical Specifications
| Parameter | Specification |
|---|---|
| Nominal voltage | 24V DC |
| Operating voltage range | 18-32V DC |
| Grease grade | NLGI #000 to #2 |
| Timer ON | Adjustable 2-30 minutes |
| Timer OFF | Adjustable 1-15 hours |
| Low-level alert | Sensor with signal output for dash lamp, buzzer, or remote monitoring |
| Electrical protection | Fuse-protected supply circuit; fuse and relay required on direct battery feeds |
| Enclosure | Sealed housing suitable for pressure washing; resistant to UV, chemicals, and impact |
| Outlet port | SAE or metric, application dependent |
| Mounting | Frame-rail or bracket mount |
Electrical Installation
The 18-32V DC input window absorbs charging spikes and cold-cranking dips on heavy-vehicle systems. Ignition-switched wiring is recommended, so the timer only runs while the machine works. A direct battery feed must go through a fuse and a relay; without them a parked machine keeps cycling and drains the battery.
This pump is built for 24V systems. On 12V vehicles, specify a 12V-rated model instead; running a 24V pump from a step-up converter adds failure points and may not hold current under load.
Timer Settings and Commissioning
ON and OFF times adjust independently, so delivery can match the duty cycle. For a moderate-duty truck chassis, a common starting point is typically 6 minutes ON and 4 hours OFF, then corrected against the bearing manufacturer’s grease volumes and observed purge at the fittings. Over-greasing damages seals, so adjust in small steps.
Before commissioning, prime every distribution line to purge air; a line holding air delivers nothing even when the pump cycles. Verify grease at the furthest point before returning the machine to work.
Grease and Divider Block Choices
The pump accepts NLGI #000 through #2, from semi-fluid greases for cold starts and long lines up to standard multipurpose grades. In cold weather, typically below roughly -10 to -20 °C, NLGI 2 stiffens and flow through long lines drops; move to a softer grade rather than forcing the pump harder.
Divider choice affects fault visibility: on a progressive divider, one blocked point stalls the whole circuit and is easy to detect; on a parallel divider, other points keep feeding but the blocked point quietly goes dry. The excavator configuration guide shows a worked progressive layout, and the central lubrication system overview explains where dividers sit.
For vehicle selection help or a formal quotation, send your machine and point list through the quote request page.
Frequently Asked Questions
What vehicles and equipment is this 24V pump suited to?
Trucks, trailers, and mobile machinery with 24V electrical systems are the core fit. Stationary plant is usually better served by AC-powered or pneumatic systems, and a machine with only a few points may not justify automation over a grease gun.
Can I run this pump on a 12V vehicle?
No. The pump is rated for 18-32V DC input; a 12V-to-24V step-up converter adds failure points and may not hold current under load. For 12V systems, choose a 12V-rated pump.
How should the pump be wired?
Ignition-switched wiring is recommended, so the timer only runs while the machine operates. A direct battery feed must go through a fuse and a relay, or a parked machine keeps cycling and drains the battery.
What timer setting should I start with?
A common starting point for a moderate-duty truck chassis is typically 6 minutes ON and 4 hours OFF. Verify it against the bearing manufacturer’s grease volume per interval and your point count, then adjust in small steps.
Where does the low-level alert signal go?
The sensor output can drive a dashboard warning lamp, a buzzer, or a remote monitoring input. The pump keeps running until the reservoir is empty, so treat the alert as a refill instruction, not a shutdown.
Which grease grades can I use?
Anything from semi-fluid NLGI #000 up to standard NLGI #2. In cold weather, typically below roughly -10 to -20 °C, NLGI 2 stiffens and flow falls off; switch to a softer grade instead of pushing the pump harder.
Should I pair it with a progressive or a parallel divider block?
Progressive dividers make faults visible: one blocked point stalls the entire circuit. Parallel dividers keep feeding the remaining points when one blocks, but that point goes dry without an obvious signal. Pick progressive when detection matters more than continuity.
Can the pump handle pressure washing?
The housing is a sealed enclosure suitable for pressure washing and resists UV, chemicals, and impact, so permanent outdoor mounting on working vehicles is expected. Keep connectors sealed and inspect them during routine service.
What must be done before first use?
Prime every distribution line to purge air, then confirm grease arrives at the furthest lube point. Skipping the prime leaves air pockets that block delivery even though the pump cycles normally.
Who supplies this pump and how do I order?
IsoHiTech Lubrication Systems was founded in 2023, engineering since 2006. Send your vehicle type and point count to inquiry@isohitech.com or through our contact page, and we will confirm fit and quote the pump with dividers and line hardware.
