M-PP193ws.doc
Issue 3226-Sep 01
Issue 3285 Oct 02
Issue 3415 Sept o4
Issue 3436 Jan 05
Issue 3523 Dec 05
7
Remove the four bolts (15) and nuts which hold the clutch assembly together. Warm
the front cover bearing housing (14) and tap the back of the vee belt pulley to
withdraw the pulley and front cover. The clutch shoes and inside face of the pulley
can now be inspected. If no further work is required, reassemble in reverse order.
To further dismantle remove the outer bearing (6) and spacer (13) using a suitable
extractor.
To remove the clutch, release the locking tab from the taper lock nut (17) and remove
the nut and lock washer. Use a suitable extractor to pull the clutch off the taper lock
sleeve. If both the clutch and taper lock sleeve move together, continue to pull until
they have moved about 3mm along the shaft adaptor. Now remove pulley extractor
and screw on taper lock nut for about 3 turns. Place a short length of tube over the
end of the shaft so that the end of the tube bears against the taper lock nut. Give the
tube a sharp tap with a hammer to release the taper lock. The taper lock and clutch
can now be easily withdrawn.
Lever out key (1), unscrew the countersunk screw (4) and withdraw the shaft
adaptor. If the shaft adaptor is screwed onto a threaded shaft, grip the large
diameter with "Mole" grips and unscrew (right hand thread).
Replacement
Re-assemble in reverse order. To position the pulley assembly and clutch correctly,
fit the distance ring (7) against the shoulder on the shaft adaptor with the recessed
side facing outwards. The taper sleeve butts up against the distance ring.
8.2. B TYPE CLUTCH
Removal
To remove the clutch from an engine with a 3/4" keywayed shaft unscrew screw (33),
withdraw spacer (29) and pull clutch assembly off shaft.
To remove clutch from an engine with a 5/8" unf shaft unscrew nut (34), remove
washer (35) and withdraw clutch assembly. It is possible that when nut (34) is
unscrewed shaft adaptor (37) will unscrew from the engine shaft rather than the nut
unscrewing from the adaptor. If this happens remove entire assembly, grip the
shoulder end of the adaptor in a vice suitably supported internally with a short length
of 5/8" bar inserted into the end of the adaptor and unscrew nut (34) as above.
To dismantle the clutch remove circlips (27) and (28) and press out hub(24) complete
with shoes and springs.
If it is necessary to remove the shoes and springs note first the orientation of the
shoes in the hub and which notch is located on the hub. Care also should be taken
when removing the springs.
