Alfa Laval LKH, Instruction Manual

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5 Maintenance
Read the instructions carefully. The items refer to the parts list and service kits section.
Lubricate the rubber seals before fitting them.
: Relates to the shaft seal.
Step 5
1. Fit impeller (27) on stub shaft (7).
2. Ensure that the clearance between the impeller and back plate
(25) is correct: 0.5 mm (0.02 inch) for LKH-10 to 60 and 1.0
mm (0.039 inch) for LKH-70 to -90.
3. Tighten screws (6) evenly until the stub shaft (7) cannot move
on the motor shaft.
LKH-10 to -60 = 0.5 mm (0.02 inch)
LKH-70 to -90 = 1.0 mm (0.039 inch)
Step 6
1. Remove impeller (27), back plate (25) and drive ring (52).
2. Tighten screws (6) evenly to 15 Nm (11 lbf-ft).
Counterhold with a screwdriver
15Nm
(11 lbf-ft)
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