If you cannot locate any manual, consider hiring a professional transmission shop to scan their internal TMP documentation — many will share a copy for a small fee.
The TMP hydraulic gearbox is a robust, high-pressure epicyclic unit frequently paired with marine engines like the and 4.108 . It is known for its high operating pressure—typically around 80 psi —which makes it effective but also prone to oil leaks if seals degrade. tmp gearbox workshop manual top
…I can give you a (e.g., safety precautions, disassembly steps, torque specs, or top cover removal). If you cannot locate any manual, consider hiring
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 …I can give you a (e
Despite being "quirky old things," TMP gearboxes are still supported by Thamesway Marine Products in the UK, which continues to provide spares and advice for those determined to keep these maritime workhorses running rather than swapping them for modern, lighter ZF Hurth or PRM units.
: The manufacturer provides specific technical notes on their website covering: