Step-by-Step Guide: How we rebuild and Test Hydraulic Pumps like Real Experts
- excellenthydraulic
- Aug 1
- 3 min read
Updated: Aug 13
Here, we will guide you through the process of how we rebuild your pump to get rid of issues. Therefore, every pump doesn’t need replacing, but the question here arises -
When your hydraulic pump fails, your whole operation stops working? right? The truth is, most pumps don’t need a new one. They need a proper rebuild. But not the kind of repair where someone just changes seals and sends it back. We’re talking about a comprehensive, inside and outside rebuild, including testing, observation, and performance checks.
That’s what we do every day at our excellent hydraulic works. We have 100000+ trustworthy customers.
Let’s walk you through how we do it, step by step.
Step 1: We Don’t Guess the fault— we Diagnose and fix it
Before opening the pump, we inspect the pump and want to know exactly what's wrong.
So we test it on our hydraulic bench:
How’s the pressure?
Is it building flow properly?
Any signs of internal leakage?
Is it overheating or making noise?
We simulate how the pump runs under real-world load.Because without understanding the cause, there's no point for fixing the result.
Step 2: Clean Disassembly — With Eyes Wide Open
We don’t tear things apart blindly. When we open your pump, we:
Keep every part labeled and organized
Look for wear patterns and metal scoring
Check seals, pistons, valve plates, everything
Here’s a secret:Often, the damage tells us how the pump was used (or misused).That helps us not only repair it—but make sure it doesn’t fail again.
Step 3: Deep Cleaning pump Because Dirt Destroys Pumps
Even a tiny bit of contamination can kill a rebuilt pump.So we go all-in on cleaning:
Ultrasonic tanks for internal parts
High-pressure flushing for passages
Special degreasers for stubborn sludge
Air-drying in a dust-free zone
This isn’t just cleaning. This is resetting the pump to zero.
Read this article for more information - How to Identify Early Signs for Hydraulic Pump Need Repair
Step 4: Measurement — Microns Matter
This is where a lot of local repair shops cut corners.Not us. We are just telling you marketing process-
We measure:
Shaft straightness
Valve plate flatness
Piston-to-bore clearance
Bearing wear
Using tools like:
Micrometers
Dial indicators
Surface testers
If any part is off by even 0.01 mm, it’s either replaced or resurfaced.
Because precision = performance.
Step 5: Replace what’s damaged with the Right Stuff
Here’s where trust comes in.
We don’t throw in cheap spares just to get the job done.We use if it good in condition:
OEM parts such as Danfoss, Sauer, Rexroth, etc.
Such high-grade compatible components from trusted suppliers
High-pressure seals, correct materials (NBR, Viton, PTFE)
The idea is simple:If it won’t survive under full load, it doesn’t go worth it spending your money. we built trust among customers with the right work.
Step 6: Assembly, which is done with care, not in a hurry -
Rebuilding is not about speed. It’s about getting it right.
During reassembly:
We follow the proper process with the right material.
Lubricate parts with the correct grade of oil/grease
Use alignment tools to prevent uneven wear
Wear gloves and work clean
This is where all the earlier precision comes together.
Step 7: Test It like It’s Going to Work Tomorrow
No rebuilt pump leaves us untested.
We put it back on the bench and run:
Full pressure & flow test
Internal leak check
RPM vs flow performance
Temperature and noise check
Only if the pump matches or exceeds OEM performance, we call it done.
And yes, you get a full test report with real numbers.
Step 8: Final Touch — Pack It like a New Machine
Before delivery, we:
Apply rust protection
Label the pump with test details
Pack it safely (shock and leak proof)
Include test results for your records
So when you install it, it’s ready to perform.
Why Clients Choose Us (And Stick with Us)
We’re not in the seal-changing business. We rebuild.
We test like OEMs do — no shortcuts.
We treat every pump like it’s going into our machine.
We serve across Delhi NCR — with pickup & delivery support.
Whether you use Danfoss hydraulic pump, Sauer, Rexroth, Eaton, or anything else — we’ve rebuilt them all.
📞 Want Your Hydraulic Pump Done Right?
No delay. No guessing. Tested by a professional for rebuilding.
📲 Call Now to Book or enquire- +91- 9953500755
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