Goulds-pumps 3298 - IOM Manuel d'utilisateur télécharger pdf (Page 80)

Maintenance

Location Dry threads torque in ft-lbs (Nm)

Cover-to-frame – 370C 30 (40)

Drain screws – 426A XS and S 14 (19)

Drain screws – 426A M and L 18 (25)

Impeller trimming guidelines

Precautions

• Do not chuck the impeller assembly.

• Do not make cuts that are larger than 0.050 in. (0.127 cm)

• Do not over-tighten the arbor screw because this can crack the carbon bearings.

Required tools

Group Sizes Arbor tool

XS 1 x 1

-5 A06785A01

S 1 x 1

-6 A06785A02

1 x 1

-8

2 x 3-6

M and L 2 x 3-8 A06785A03

3 x 4-7

1 x 2-10

3 x 4-10

4 x 6-10

You can use nylon impeller arbor sleeves in place of bearings:

• XS group–B04674A01

• S group–B04676A02

• M group–B04676A03

• L group–B04676A04

1. Small radius 0.005 to 0.002

2. 45° rake angle

Figure 72: Recommended cutting tool

Tool features:

• 200 to 300 RPM

• 300 to 500 ft./min

• High-speed steel tool

• Light hand feed

Trimming guidelines

• Make sure that the arbor runs within 0.002 TIR.

78 3298 Family Installation, Operation, and Maintenance Manual

1 2 ... 75 76 77 78 79 80 81 82 83 84 85 ... 119 120

Pas de commentaire

Goulds-pumps 3298 - IOM Manuel d'utilisateur Page 80