Essential for routine maintenance on ROTAX 915iS and 916iS engines to check the pop-off valve, refer to the respective Line Maintenance Manual (MML) that can be downloaded on www.FlyRotax.com for detailed instructions.

This tool is also useful to check the sealing of the float needle valve in the carburetors on 912 and 914 engines, instructions are included in the Line and Heavy Maintenance Manuals (MML & MMH) for the respective engine models.

iRMT training with a minimum Service Level rating is recommended. Information about iRMT training is available on https://shop.cometaviationsupplies.co.za/shop/engines-engine-parts/rotax-aircraft-engines/irmt-training-rotax-aircraft-engines/rotax-irmt-training

Key Features

Dual‑Function Pressure & Vacuum Operation
Easily switch between generating vacuum or positive pressure—ideal for testing mechanical cockpit gauges, pitot‑static instruments (where appropriate), and a variety of pneumatic actuators.
Integrated Vacuum Gauge
The built‑in analog gauge provides real‑time feedback, allowing AMEs and technicians to perform precise calibration checks and controlled system pressurization during routine maintenance.
Manual, Field‑Ready Design
With no need for electrical power or shop air, this handheld pump is perfect for flight‑line diagnostics, mobile AMO operations, and remote airfield support.
Durable Construction
Designed to withstand aviation‑environment handling, the rugged body and ergonomic grip ensure reliable operation in hangars, on ramps, or during away‑base maintenance.
Multi‑Application Capability

Suitable for tasks such as:

Verifying vacuum‑driven gyro systems (in legacy aircraft)
Testing diaphragm‑based pressure switches and sensors
Checking vacuum reservoirs, actuators, and environmental control components
Simulating pressure changes for instrument calibration workflows

Why Aviation Technicians Prefer This Tool

This pump brings together portability, accuracy, and versatility—critical for technicians who need dependable, repeatable results when evaluating sensitive aircraft systems. Whether you’re troubleshooting a stubborn gauge or performing scheduled inspections, this tool delivers the confidence required in regulated aviation maintenance environments.