Valve Rocker
Maintenance / Disassembly and reassembly
A5.05. 01.02.02.00
30000
M20
en / 29.05.2000 IB021075 2/3
01
Ĺ
3. Check the surfaces of the ball pin (Fig. 2/10) and adjusting screw (12) for wear and damage.
Renew parts if as necessary. Undercool and shrink in ball pin with fluid nitrogen to -195 °C.
Observe the marking (x) of the ball pin.
ĭ Safety note:
Observe safety regulations when handling fluid nitrogen.
4. Measure valve rocker bush (Fig. 2/13) and axle (Fig. 1/5) and renew bushes on attaining the
limit clearance.
New clearance Limit clearance
0,015 - 0.14 0,2
5. Replace bearing bushes.
5.1 Knock bush (Fig. 2/13) out from valve rocker with suitable brass drift.
5.2 Slightly oil the new bush and press in valve rocker.
Attention:
Observe the position of the oil holes (14) and parting joint (15) as well as the dimension
s = 0.2 mm (Fig. 2/Z) (projection of the valve lever to the bush) when pressing in the new
bushes. Do not damage plastic-laminated surface.
Fig. 2
15
12
13
14
14
10
XZ
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