Montabert
DOWN CYLINDER 86334299 — Montabert Compatible
DOWN CYLINDER is a high-strength aftermarket spare part fully compatible with Montabert hydraulic drifters and rock drills. Precision CNC-machined to original-part tolerances. Contact us for stock and delivery on OEM number 86334299.
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DOWN CYLINDER — OEM 86334299
- OEM Number
- 86334299
- Compatible Brand
- Montabert
- Part Type
- Drifter
What the DOWN CYLINDER does
Cylinders provide the linear force in the drifter and its feed system, holding the bit against the rock at the thrust the ground calls for. Feed force is what keeps percussion energy going into the rock rather than back into the machine, so a weak cylinder shows up as a drilling problem, not just a hydraulic one.
Signs it needs replacing
- Drift or creep under load — the rod will not hold position
- Slow or uneven extension
- Oil weeping past the rod seal or the gland
- Scoring, pitting or plating damage on the rod
Before you fit it
Inspect the rod surface before fitting a seal kit. A scored or corroded rod cuts new seals immediately, which is why a rebuilt cylinder often leaks again within days — the seal was replaced but the surface that destroyed it was not.
General guidance for this class of component. Always work to the torque figures, clearances and service intervals in your machine's own manual.
About This Part
Which machines does DOWN CYLINDER (OEM 86334299) fit?
It is used on Montabert hydraulic rock drills and drifters. Models we already carry parts for: HC 25 ROCK DRILL (DRIFTER). If yours is not listed, send us the OEM number and we will confirm the fit.
Is this an original Montabert part?
No. This is an aftermarket part manufactured by KY Rock Drill and CNC-machined to original-part tolerances. We are not affiliated with or an authorised dealer for Montabert; the OEM number is quoted only to identify compatibility.
