Graco 308652Y Manuel d'utilisateur télécharger pdf (Page 14)

14 308652

Service

Replacing Check Valves

Replace each pair of check valves as follows. See

Fig. 7.

1. Relieve the pressure, and disconnect the air line

from the pump.

WARNING

To reduce the risk of serious injury whenever you

are instructed to relieve pressure, always follow the

Pressure Relief Procedure on page 8.

2. Remove the eight screws (58) that hold the fluid

cover/center housing assembly on the man-

ifold (52), and lift the manifold covers/center hous-

ing assembly off of the manifold (52).

3. Remove and replace the check valves (20), being

careful to orient each check valve exactly like

the one it is replacing. Make sure the check

valve/seat area is clean.

4. Remove and replace the sealing o-rings (21).

Once compressed, o-rings may not be reused.

Make sure the check valve/seat area is clean.

5. Reinstall the fluid covers/center housing assembly

on the manifold (52), install the screws (58) that

fasten the fluid covers/center housing assembly to

the manifold, and torque to 42–47 in-lb (4.5–5.0

NSm). See Torque Sequence on page 18.

6. Reconnect the pump.

Fig. 7

ti10665a

1 2 ... 9 10 11 12 13 14 15 16 17 18 19 ... 23 24

Pas de commentaire

Graco 308652Y Manuel d'utilisateur Page 14