Buhnen HB 720 R/S, Translation Of The Original Operating Manual

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Servicing/Maintenance
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6.3.3 Replacing the swirl nozzle, pressure spring & ball (HB 720 Spray)
Tools needed • 1 hook spanner
• 1 open-end spanner size 11
1. Disconnect the compressed-air supply.
2. Without using force, twist off the retainer ring (B1) with the hook spanner in a warm
condition.
3. Remove the protection cap (B6) and air cap (B2).
4. Loosen the swirl nozzle (B3) with the open-end spanner size 11.
5. Remove the pressure spring (B4) behind the swirl nozzle and the ball (B5).
6. Fit the new components in reverse order.
6.4 Adjusting the cover pressure
Tools needed • 1 Allen wrench 2 mm
• 1 Allen wrench 2.5 mm
• 2 Allen wrench 4 mm
Fig. 6.4/1: Pull off grip and carrier
1. Rotate the lever (C3) clockwise and swivel the cover until fully open.
2. Loosen the lever fixing screw (C4) with the Allen wrench.
Withdraw the screw.
3. Loosen the clamping screw (C1) with the Allen wrench (approx. 1.5 turns).
4. Insert the Allen wrench 2.5 mm into the adjusting screw through the lever screw-hole.
Turn the adjusting screw clockwise initially by approx. 90°.
5. Close and lock the cover.
If the cover will not close, keep turning the adjusting screw back (clockwise) by ap-
prox. 15° until the cover closes easily.
6. Actuate the trigger.
• If the cover now closes correctly, proceed at step 7.
• If the cover still does not close correctly, repeat the adjustment from section 4.
7. Open the cover again.
8. Tighten the clamping screw (C1).
9. Fit the lever fixing screw (C4).
GB
H2200XM_DE-EN_200720.indd 29 26.07.21 08:55