Routine maintenance

On the following pages, in the same general order as listed in the Maintenance Section of this book, will be found full instructions on how to carry out the maintenance and adjustments required on your Rover 2000.
Absolute cleanliness is essential when carrying out maintenance.

Engine oil level, all models-Every 750 miles (1.000 km)
Proceed as follows:
Stand the car on level ground and allow the oil to drain back into the sump. Withdraw the dipstick, wipe it clean, re-insert to its full depth and remove a second time to take the reading. Add oil as necessary; never fill above the H mark.

Engine oil changes and filter replacement, all models-Every 5,000 miles (8.000 km) or every four months, whichever comes first. To change the engine oil:
Run the engine to warm up the oil, switch off the ignition. Remove the drain plug in the right-hand side of the sum p. Allow oil to drain away completely and replace the plug.
To drain oil cooler, TC models only:
When the engine oil on TC models is changed the oil cooler must also be drained as follows:
1. Remove the drain plug which is located in the bottom of engine coolant radiator at the right-hand side.
2. Allow oil to drain away completely and then replace the plug.

To change filter:

Place oil tray under engine, then unscrew the filter anti-clockwise by hand.
Smear rubber washer on filter with a little engine oil. Screw on the filter clockwise by hand; do not overtighten.
Refill with oil of the correct grade through the filler at the right-hand front of the engine; the capacity is 9 Imperial pints, 1O.5 U.S. pints (5,0 litres). This includes 1 Imperial pint, 1.2 U.S. pints (0,5 litre) for the filter.

Run engine and check for oil leaks at filter and drain plug(s).

Use only the recommended oil filter AC No. 7965022, type SC.

Engine breather filter, all models-Every 10,000 miles (16.000 km)
Clean as follows:
Remove the filter and withdraw gauze; wash by swilling the gauze in a dish of petrol; re-wet by dipping in clean engine oil, shake off the surplus.

Crankcase emission control, diaphragm type (as applicable)- Every 10,000 miles (16.000 km)
Clean as follows:
1. Remove the spring clip retaining the cover, which can now be removed together with the diaphragm unit and spring.
2. Clean orifices of control body and cover in methylated spirits. Note: The diaphragm must not be cleaned.
3. Check all components for damage.

To re-assemble:
1. Replace the spring, locating it in the body.
2. Locate the diaphragm in the body and on to the spring.
3. Replace the cover and refit the spring clip.
Ensure diaphragm is seating properly and cover fits evenly to body.
4. Warm up engine and readjust carburetter(s) if necessary.

Crankcase emission control, flame trap type (as applicable)- Every 20,000 miles (32.000 km)

Clean as follows:

1. Detach the rubber hoses from each side of the flame trap.
2. Remove the nut retaining the flame trap bracket to the thermostat housing.
3. Withdraw flame trap, wash in clean petrol and allow to dry out completely.
4. Reverse removal procedure.
5. Warm up engine and re-adjust carburetter(s) if necessary.

Air cleaner, SC and automatic models-Every 10,000 miles (16,000 km)
Attention to the air cleaner is extremely important. Replace element more frequently under dusty conditions, as performance will be seriously affected if the car is run with an excessive amount of dust in the element.

Proceed as follows:

1. Slide extension tube rubber clear of air cleaner.
2. Disconnect air balance pipe between carburetter and rear of air cleaner.
3. Remove air cleaner from carburetter. Two nuts at carburetter air intake flange.
4. Unscrew wing nut and separate two halves of air cleaner and remove element.
5. Fit new element, ensuring rubber washers are correctly located in each half of the air cleaner body.
6. Reassemble unit and reverse removal procedure. Fit new gasket between air cleaner and carburetter if necessary.

Air cleaner, TC models-Every 5,000 miles (8.000 km)
Attention to the air cleaner is extremely important. Replace elements more frequently under dusty conditions, as performance will be seriously affected if the car is run with an excessive amount of dust in the elements.
Proceed as follows:
1. Remove the two brass bolts retaining the air cleaner to the carburetter adaptors.
2. Separate the two halves of the air cleaner by pulling the lid away from the case.
3. Remove the two paper-type elements.
4. Wipe clean the interior of the air cleaner.
5. Ensure the new elements are correctly located on the retaining ridges in the air cleaner case. Then refit the lid, clipping it into position.
6. Ensure that the two rubber sealing rings are in good condition and correctly located on the carburetter flanges.
7. Refit the air cleaner and secure with the two brass bolts.

Carburetter slow-running adjustment, TC models-Every 5,000 miles (8.000 km)

Carburetter adjustment should be carried out by a Rover Distributor or Dealer as special equipment is required.
The only adjustments provided at the carburetters are a mixture adjustment screw and a throttle adjusting screw.
Should the carburetters require adjustment for any reason, proceed as follows:
1. Run the engine until normal operating temperature is obtained. If necessary adjust the slow-run screw to give the correct idling speed. The screw on each carburetter should be moved an equal amount.
2. Using an approved carburetter throttle balancing device, turn the throttle adjusting screws until an identical reading is obtained on both carburetters.
3. When satisfactory throttle synchronisation has been obtained the mixture should be adjusted by screwing both mixture adjusting screws up or down by the same amount until the fastest idling speed is obtained consistent with even firing.
4. As the mixture is adjusted the engine will probably run faster arid it will be necessary therefore to re-adjust the idling speed by means of the throttle adjusting screws, an equal amount must be given to each screw, otherwise sychronisation will be impaired.
5. Lift the front carburetter piston approximately 0.03125- in. (1 mm) by means of the lift pin situated on the right of the carburetter body. There is approximately 0.1875 in. (4,5 mm) free movement of the lift pin before it contacts the piston.
6. If the engine speeds up immediately the mixture is too rich and the mixture adjustment screw must be turned anti-clockwise, thus weakening the mixture; if the engine speed decreases immediately the mixture is too weak and the mixture adjustment screw should be turned clockwise to enrich the mixture.
If the engine speed momentarily increases very slightly the
adjustment is correct.
7. Repeat items 1 to 6 on the rear carburetter.
8. Re-check the front carburetter, as the two carburetters are interdependent.

The fast-idle screws should not require adjustment.

Carburetter hydraulic damper, all models-Every 5,000 miles (8.000 km)
Unscrew the cap on top of the suction chamber, withdraw cap and hydraulic damper, replenish the damper reservoir as necessary with SAE 20 oil to within about in. (12 mm) from the top of the tube.

Then replace cap and hydraulic damper. This applies to both carburetters on twin carburetter models.