The workshop manual notes that most hydraulic failures stem directly from improper oil management. Unlike modern transmissions that specify automatic transmission fluid (ATF), the classic TMP box relies on standard .
If the propeller continues to spin rapidly when the selector valve is set to neutral, the (Part No. TM 12016) is likely worn out or the control cable alignment is dragging the valve slightly out of its detent. Slipping in Ahead Drive This is typically caused by two issues: tmp gearbox workshop manual top
Separating a TMP gearbox from an engine (frequently mated to Perkins 4.108 or Mercedes powerplants) can be highly challenging due to physical corrosion. The Separation Challenge The workshop manual notes that most hydraulic failures
: Pits Lane, Chedgrave, Norfolk, NR14 6NQ, United Kingdom. TM 12016) is likely worn out or the
Never reuse old seals, gaskets, or O-rings during rebuilds. Use the official parts codes below to prepare your rebuild kit. Required Replacement Parts Component Target Area Part Code Identification (Direct Drive) Part Code Identification (Reduction Box) TM 12020 × 1 TM 12436 × 1 Transfer Shaft Seal TM 12436 × 1 Output Shaft Seal TM 12470 × 1 TM 12470 × 1 Full Gasket / O-Ring Set TM 12016 × 1 TM 12016 × 1 Neutral Brake Pad TM 12090 × 1 TM 12090 × 1 Oil Filter (MK II / MK IV) TM 12009 / TM 12773 TM 12009 / TM 12773 5. Troubleshooting Pressure and Alignment Faults