Tmp Gearbox: Workshop Manual Top
, is a specialized hydraulic transmission widely used in marine applications. While professional workshop manuals are often sourced directly from the manufacturer, the following technical summary serves as a detailed reference for operation, maintenance, and repair based on official technical data and user experience. 1. Technical Specifications
: The difference between "Fill" and "Full" is tiny. Overfilling can lead to leaks because the unit runs at high hydraulic pressure (roughly 80 psi ).
The TMP Gearbox Workshop Manual Top is available in various formats, including:
The TMP gearbox is a high-pressure hydraulic unit, often compared to the old overdrive units found in vintage cars like MGs and Triumphs. It is famously heavy and requires serious patience to maintain. In fact, seasoned boaters often warn that DIY repairs are due to the precision required to handle its internal conical clutch plates. 2. The Rust Battle & the "2-Inch Hole" Solution tmp gearbox workshop manual top
: Never clear old mating gaskets using steel scrapers on aluminum housings. Use fine brass wire brushes to prevent gouges that lead to chronic oil leaks. Resolving Seized Flywheel Studs and Castings
Avoid overfilling at all costs. High operating pressures inside the epicyclic casing will forcefully push excess oil past aging gaskets and input/output seals. 2. Essential Tools and Reassembly Parts
When searching, use the exact syntax: "TMP-xxx" workshop manual top filetype:PDF (replace xxx with your model, e.g., TMP-870H). , is a specialized hydraulic transmission widely used
Units with a serial number starting with "21" (often found on Ruston Hornsby or Coventry engines) utilize an inverted oil pump running the opposite way. These pumps are not interchangeable .
Replace the oil every 100-200 hours, or annually.
A rearward movement of approximately 2.0 inches is usually required to clear the input shaft. For Mercedes-based installations, this may increase to 6.0 inches. Technical Specifications : The difference between "Fill" and
“Separation can require lots of heat, patience, and care to avoid damage to the faces of the castings.” Thamesway Marine Products
: Check cooling water connections for corrosion. If the gearbox overheats, inspect the oil cooler and its sacrificial anodes. 3. Workshop & D.I.Y. Repair Procedures
To obtain the correct top manual, locate the (typically on the top cover or side casing). Common TMP gearbox series examples:
. Multi-grade oils (like 15W40) should be avoided as they can negatively impact the friction coefficient, causing the clutch to slip. Operating Pressure : The hydraulic system should typically operate at around to hold the conical clutch plates together. Routine Maintenance
