Alfa Laval GJ 18, Инструкция по эксплуатации, Страница: 26 / 44

6 Maintenance
26
Read the instructions carefully. The items refer to the parts list and service kits section.
Drawing 7
Stem Assembly
Confirm that the Clutch O-Ring (pos. 23) is seated in the groove of the Stem (pos. 15.1).
If the unit is a pin drive machine, there will be a Bevel Gear Location Pin (pos. 15.2) in the corresponding hole in the Stem.
If the unit is a clutch machine, the pin hole will be left empty.
Note: If you are unsure whether the unit is intended to be a pin or clutch drive, contact Alfa Laval for
assistance.
The Output Shaft Lower Bearing (pos. 26) should be firmly pressed into the corresponding hole in the Stem.
Press the Tee Housing Bevel Gear (pos. 22) down over the Clutch O-Ring (pos. 23), aligning the Gear’s pin notch with the
Location Pin (pos. 15.2), if applicable.
Install the Labyrinth Bearing (pos. 25) down onto the Stem with the flange facing the Bevel Gear.
Drawing 19, 4
Tee Housing Assembly
Drawing 19: Confirm that the Tee Housing Cups (pos 24.2) are pressed securely into the Tee Housing (pos. 24.1).
Drawing 4: Orient the Stem Assembly (Drawing 7) with the Tee Housing Bevel Gear (pos. 22) facing upward. The lower
Labyrinth Bearing (pos. 25) should already be installed with the flange facing the Bevel Gear.
Lower the Tee Housing Assembly (Drawing 19) onto the Stem (pos. 15.1), with the six holes for the Tee Housing Base
Screws (pos. 28) facing upward. Install the second Labyrinth Bearing (pos. 25) so that it sits around the Stem (pos. 15.1).
Place the Stem Base (pos. 27) onto the end of the Stem (pos. 15.1). The indented side of the Stem Base should be up
against the Stem. Align the screw holes of the two parts, install the four Stem Base Cap Screws (pos. 28) with the
corresponding Lock Washers (pos. 29). Tighten the Screws using a ¼” Hex Key, proceeding in a star pattern to distribute
shear stresses.
Place the Tee Housing Base (pos. 30) on the top surface of the Stem (pos. 15.1) with the stepped region of the Base facing
up. Align the holes for the Tee Housing Base Cap Screws (pos. 28) and insert the Screws with their corresponding Lock
Washers (pos. 29). Tighten the Screws using a ¼ Hex Key, again proceeding in a star pattern to distribute shear stresses.
Drawing 18, 3
Nozzle Carrier Body Assembly and Installation
Drawing 18: Ensure that the Nozzle Housing Bevel Gear (pos. 31) is held firmly in place by the inner Nozzle Housing Cup
(pos. 32) and that the matching outer Cup is also pressed securely into the Nozzle Carrier (pos. 33.1).
Verify that the Stream Straighteners (pos. 37) are seated inside their respective Nozzles (pos. 36).
Thread the Nozzles into the Nozzle Carrier.
Drawing 3: Place one Labyrinth Bearing (pos. 25) with the flange facing inwards onto the nose of the Tee Housing (pos
24.1), followed by the Nozzle Carrier Assembly (Drawing 18) with the Bevel Gear (pos. 31) facing inwards.
Place the second Labyrinth Bearing (pos. 25) onto the nose of the Tee Housing (pos. 24.1) with the flange facing outwards.
Position the Nameplate (pos. 34) at the outer face of the Tee Housing nose. Secure the Nameplate with the Nameplate
Screws (pos. 35) and their corresponding Lock Washers (pos. 5) using a 7/16” socket wrench.