News & technical guides
Service guides and product know-how from the people who build the tools — published on the MHOT blog, and summarised here so you can find them from the product pages.
September 21, 2026 · Service guide
How to Vacuum-Fill a Cooling System Without Airlocks
Air trapped in a cooling system is the cause of comebacks no workshop wants — the customer drives off, the temperature gauge creeps up and the phone rings. Here is the sequence that avoids i…
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September 21, 2026 · Technical
Removing a Seized Wheel Hub: Tools That Actually Work
Every technician knows the sound of a hub that rings like a bell after twenty hammer blows and will not budge. Rust has welded the hub bore — and hammering is the wrong answer.…
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September 21, 2026 · Product know-how
R134a Quick Coupler Adapters: What Fits What
Ask an A/C technician about their most-used tool and it is rarely the manifold gauge set — it is the adapters that let the gauge set connect at all. A short guide to ports and threads.…
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