The Utile Engineering Co. Ltd.
27/11/03
Irthlingborough, Northamptonshire. England
Tel: +44 (0) 1933 650216
Fax: +44 (0) 1933 652738
13
IC162
Fig 9
5.3
Inspect the bearing, renew if it shows any signs of wear or pitting.
5.4
Examine the shaft seals (17) and renew if the wiping lip is worn or damaged.
With the rear end coverplate (2) already removed complete with rotor as described in 4 for cylinder renewal.
Do not mix the different ends components together, as internal clearances will be affected.
5.5
Undo four screws (24) and remove end cap (3) together with the shaft seals (17).
5.6
Remove the circlip (19) from its groove, then slip off the bearing retaining washer (7).
5.7
Undo six screws (25), shakeproof washers, then using a two-leg pulley drawer pull the coverplate (2)
complete with ball bearing (16) from the rotor/shaft assembly.
5.8
The ball bearing (16) can be pressed out of the coverplate for inspection.
5.9
Inspect the bearing, renew if it shows any signs of wear or pitting.
5.10
Push the shaft seals (17) out of the end cap (3).
5.11
Examine the shaft seal (17) and renew if the wiping lip is worn or damaged.
6.
Reassembly Procedure
This section only applies when using original bore size or replacement cylinder. Before commencing reassembly
ensure that all components are perfectly clean and oilways are clear. Lightly smear the shaft with oil to assist
assembly.
The correct clearances for these machines are: -
LW700
Drive End Coverplate / Rotor 0.
3
8mm / 0.44mm
Rear End Coverplate / Rotor
0.10mm / 0.13mm
Rotor / Cylinder
0.10mm / 0.13mm
Reassembly should start with the preparing of the rotor and shaft assembly by the fitting of the replacement
spacing rings (6) (if required) and the inner races of the roller bearing (15).
6.1
The spacing rings (6) are retained on the clean shaft using LOCTITE 648 adhesive or equivalent, and
should be pushed hard against the rotor face with the slot away from the rotor face. It is essential that the
width of the seal sleeve is identical to the one it is replacing or internal clearances may be effected causing
serious machine damage.
6.2
The drive end roller bearing inner race (15) can now be pressed onto the shaft.
Starting at the drive end
6.3
Press the ball bearing (16) into position in the coverplate (2).
6.4
Ease coverplate assembly (2) onto the rotor/shaft (4), secure in place with any shims, the bearing retaining
washer (7) and circlip (19). Set clearance.
6.5
Assemble the shaft seals (17) into the end cap (3) as fig 9.
6.6
The end cap (3) can now be fitted onto the coverplate assembly complete with the
gasket (55) and any shims taking care not to damage the seal lips on the shaft.
6.7
Fit new o-ring (18) into the coverplate groove. If coverplate gasket (54) has been
replaced, it is essential that they are the same thickness as the originals,
otherwise internal clearances will be affected and could cause serious damage.
Lightly smear the gasket with oil before positioning onto cylinder (1).
6.8
With the cylinder (1) upside down on its flanges for ease of assembly (tape up or
remove non return valve (51) to save damage), lay the rotor/shaft assembly
on the bottom of the cylinder.
6.9
Push coverplate assembly onto cylinder (1) with coverplate gasket in position via
location dowels. Replace the six shakeproof washers and screws (25).
6.10
Check rotor / cylinder clearance.
6.11
Tighten fan (20) in position on the shaft, with the set screw. Refit fancowl assembly (21) onto supports with
screws (38).
Reassemble drive end
6.12
Refit sliding blades (5) in their slots after lightly smearing with oil and removing any high spots with fine
emery cloth. Ensure the blades are orientated correctly in their slots.
