8
O-ring
17
O-ring
9
O-ring
18
O-ring
Remove gas ballast valve
Required tool
● Open-end wrench, 17 WAF
● Screwdriver
● Allen key, 4 mm
● Allen key, 5 mm
● Torque wrench
1. Unscrew the hose nozzle from the flange.
– Be careful with the O-ring.
2. Remove the circlip.
3. Rotate the dosing screw out of the flange.
– Be careful with the O-rings.
4. Unscrew both screws from flange.
5. Remove the flange.
– Be careful with the O-rings.
6. Unscrew the rear screw from the flange and remove the washer and plate spring.
7. Unscrew the silencer screw from the valve housing.
– Be careful with the O-ring.
8. Unscrew the screws from the valve housing.
– Be careful with the O-rings.
9. Clean all parts and replace wearing parts in accordance with maintenance kit.
Install gas ballast valve
1. Install the gas ballast valve in reverse order.
2. Note the screw torques:
● Screw (1) – torque:
3 Nm
.
● Screw (10) – torque:
3 Nm
.
● Screw (15) – torque:
6 Nm
.
7.5.3 Adjusting the gas ballast valve silencer
C-Version
C version
3
4
1
2
1
2
Fig. 26:
Adjusting the silencer
1
Silencer screw
3
Gas ballast knob (standard version)
2
O-ring
4
Dosing screw (C version)
The silencer is a screw in the gas ballast housing used to reduce air intake. This silences the knocking
sound of the oil. If the silencer becomes dirty, it must be cleaned and readjusted.
Silencer
► Dismantle and clean the gas ballast valve parts
(see chapter “Gas ballast valve – standard ver-
Adjusting the silencer
1. Screw the silencer screw in fully.
Maintenance
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