Replace valve stem seals - AR05.30-P-3510MCC
ENGINES 132.9 in MODEL 451.3/4
| Remove | |||
| 1 | Remove cylinder head | * Not for USA | AR01.30-P-5800MCC |
| * For USA only | AR01.30-P-5800MCU | ||
| 2 | Cut fuel hose with an inside diameter of 6 mm to a length of about 5 cm | ||
| 3 | Lay cylinder head on the wooden plate and lay the cut to length fuel hose in the combustion chamber under the valves | ||
| 4 | Screw in thread extension (1) and counter stay (2) in the area of the respective valves into a threaded hole on the cylinder head | Fig 3 | |
| Fig 6 | |||
| 5 | Attach lever handle and depressor (4) to the thrust fork (3) and hook into the counter stay (2) | Fig 3 | |
| Fig 5 | |||
| 6 | Position depressor (4) in the middle on the upper valve spring retainer (6) and press valve spring (7) together through pressing together the lever handle | Fig 3 | |
| Fig 5 | |||
| 7 | Remove valve collets (5) using suitable magnets and also remove thrust fork (3) using a depressor (4) and lever handle | Fig 3 | |
| Fig 5 | |||
| 8 | Remove valve spring retainer (6) and valve spring (7) | The valve spring retainer (8) can remain in the cylinder head. |
|
| 9 | Detach valve stem seal (9), using pliers out of the valves repair tool, from the valve guide | Fig 3 | |
| Install | |||
| 10 | Lubricate new valve shaft seal (11) with engine oil | ||
| 11 | Insert new valve stem seal (11) on the valve stem (10) and press on using drift (12). | Fig 4 | |
| 12 | Insert valve spring (7) and valve spring retainer (6) | ||
| 13 | Hook thrust fork (3) with depressor (4) and lever handle into the counter stay (2) | Fig 3 | |
| Fig 5 | |||
| 14 | Position depressor (4) in the middle on the valve spring retainer (6) and press together valve spring (7) through pressing down the lever handle, insert the valve conical pieces (5) on the valve stem (10) in the cutout and then relieve the valve spring retainer (6) | ||
| Fig 3 | |||
| Fig 5 | |||
| 15 | Remove thrust fork (3) with depressor (4) and lever handle | Fig 3 | |
| Fig 5 | |||
| 16 | Remove thread extension (1) and counter stays (2) on the cylinder head | Fig 3 | |
| Fig 6 | |||
| 17 | Repeat operation steps 3 to 16 until all valve stem seals (9) have been replaced by new valve stem seals (11) | ||
| 18 | Install cylinder head | * Not for USA | AR01.30-P-5800MCC |
| * For USA only | AR01.30-P-5800MCU |