A.J.S. 16, Instruction Book

Page: 22 / 104

TO REMOVE A N D CLEAN CRANKCASE FILTER (TWINS)
The crankcase filter, as shown in illustration 7 is made up from a coarse wire frame
surrounded by a fine mesh metal gauze.
To remove the filter use a good fitting spanner and unscrew the non-return valve
(illustration 9).
If the valve is difficult to remove run the engine until the crankcase is heated or pre-
ferably after a run on the road.
W i t h the non-return valve released carefully extract the filter from the crankcase.
Clean the filter tunnel with fluff-free rag moistened with petrol, avoid leaving particles
of rag in the tunnel. Wash the filter in petrol, allow it to dry before re-fitting.
PRESSURE RELIEF VALVE
This valve, not shown in illustration 21, is located in the timing half crankcase below
dyno stud No. 9.
This valve must NOT be interfered with during normal maintenance.
TO REMOVE MAGNETIC FILTER—ALL MODELS
Incorporated with the crankcase sump plug is a powerful magnet, which does not require
frequent attention. For cleaning place a tray under the crankcase, unscrew the sump
plug, with the use of a good fitting ring spanner.
Metal particles adhering to the magnet can be removed by wiping with a grease coated
rag, the grease will collect metal particles on the rag. Keep the magnet away from
large pieces of steel or iron, as contact can impair the efficiency of the magnet.
Illustration 9
Location of oil non-return valve.
Remove the valve to gain access to oil filter.
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