Évaluations - 3, GPA: 3.7 ( )

Fabricant : Graco Taille : 353.49 kb Nom Fichier : Langue d'enseignement:

4. Install the new valve. Install the o-ring and hex plug; torque to 75 ft-lb (103 Nm). NOTE: Retorque the plug after 5 hours of operation. Pumping Section 1. Remove the eight capscrews and lockwashers from the manifold using a 13 mm wrench. 2. Carefully separate the manifold from the crankcase. NOTE: You might have to tap the manifold lightly with a soft mallet to loosen it. CAUTION To avoid damage to the plunger or seals, keep the manifold properly aligned with the ceramic plungers when you remove it. 3. Carefully examine each plunger for any scoring or cracking, and replace as necessary. Servicing the Plungers NOTE: Plunger repair kit 801474 is available to replace retainers, o-rings, washers, and backup rings for three cylinders. 1. Loosen the plunger retaining screw five to six turns using a 10 mm wrench. Push the plunger towards the crankcase to separate the plunger and retaining screw. 2. Remove the screw from the plunger, and examine the o-ring, backup ring, and copper bearing/gasket washer. Replace these parts, if necessary. 3. Remove the plunger and flinger from the plunger shaft. Clean, examine, and replace parts as necessary. 4. Inspect the plunger shaft for oil leakage from the crankcase. If leaking is obvious, replace the oil seals. Otherwise, DO NOT remove these seals because they cannot be reused. Oil Seal Kit 801473 is available for replacing the seals. 5. Lightly grease the flinger (and the oil seal if it is being replaced), and replace on the plunger shaft. Then install the plunger. 8 308524 Pump Service 6. Lightly grease the retaining screw and the outer end of the plunger. Place the washer, o-ring, and backup ring around the screw, and install the screw through the plunger. Torque to 14.4 ft-lb (19.5 Nm). NOTE: If you plan to replace the packings, See Servicing the V-Packings at right. 7. Lubricate the outside of each plunger. Slide the manifold onto the crankcase, being careful not to damage the seals. 8. Install the capscrews and washers finger tight. Torque the screws to 21.7 ft-lb (29 Nm) following the tightening pattern in Fig. 3. Uneven tightening can cause the manifold to bind or jam. 51 47 238 6 Fig. 3 Servicing the V-Packings NOTE: There are two types of packing kits: 801486 contains packings only. 801487 contains packings, rings, and retainers. 1. Remove the manifold as outlined in Pumping Section on page 8. 2. Carefully pull the packing retainer (43) from the manifold. Examine the o-ring (42), and replace if cut or damaged. 3. Remove intermediate ring (46). Pull out restop v-packing (47). Remove the second V-packing (44) and ring head (45). 4. Inspect all parts, and replace as necessary. 5. Thoroughly clean the packing cavities, and examine for debris or damage. 6. Lightly grease packing cavities, and replace packings in following order: ring head (45), V-packing (44), restop packing (47), intermediate ring (46). Install o-ring (42) in retainer groove and then install retainer ring (43) with low pressure seal (57)....

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