Norton Commando Workshop Manual

## Routine Maintenance

# K

inside the main tubes the oil will be slow to run down. Cover the top of the tube with the hand and "pump" the fork up and down to assist filling.
Expose the springs again and before refitting the filler plugs to the damper rods ensure that their locknuts are screwed down to the bottom end of the thread on the rod. Lock the filler plugs and locknuts together then screw in and tighten the filler plugs.

### SECTION K12

### CHECKING HYDRAULIC BRAKE FLUID LEVEL (Optional disc brake)

The disc brake is hydraulically operated. Before taking the motorcycle on the road from new or after attention to the disc brake, ensure that the master cylinder reservoir contains the correct amount of fluid.
The master cylinder contains a flexible bellows seal ' which fits into the reservoir over the fluid. DO NOT FILL THIS. Lift the bellows out (see Fig. K8) and lay 5 on the upturned cap so that dirt does not adhere. Check that the fluid is to a level of 1/2 in. (12 9 mm) | from the top of the reservoir and if necessary, correct the level using the recommended hydraulic fluid. Replace the bellows scal closed end downwards then refit the cap tightly.

Hydraulic brake fluid absorbs moisture and it is most important to keep the cap on tight and also to store the fluid only in sealed containers. The breather hole in the cap must be kept clear and no dirt or foreign matter must be allowed to enter the system.
Important : Hydraulic brake fluid must be handied with care as it will attack paintwork and certain types of rubber and plastic.

### SECTION K13

### CHECKING BATTERY ELECTROLYTE LEVEL

For access to the battery remove the L.H. accessory cover by turning the ring above the ignition switch to remove the Dzus fastener. The pane is then lifted out at the front and clear of the rear pegs. To remove the battery lift the metal loop of the rubber strap clear of the battery retaining bar. Disconnect the red ground lead from terminal "+" and the blue/brown lead from terminal "-" on the battery. Slide the vent pipe clear. Lift the battery clear, taking care not to spill acid. The electroIyte level is embossed on the battery case, visible on the left side of the battery casing (see Fig. K9). At two weeks intervals, more frequently in hot climates, the level of the electrolyte should be checked. If necessary, add

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