PART TWO
ROUTINE MAINTENANCE AND ADJUSTMENTS

Lubrication and maintenance are necessary to keep any car in good mechanical condition. All items which require regular or occasional maintenance as detailed in the Maintenance Schedule
Book are shown on the following pages in terms of mileage hich would apply in a temperate climate under clean working onditions.
Climatic and operating conditions affect maintenance intervals to a large extent; in many cases, therefore, the determination of such intervals must be left to the good judgment of the owner, but the recommendations will serve as a firm basis for maintenance work.
In addition, the following notes concerning more frequent attention to certain important lubrication points should be read carefully.
Engine. Under adverse conditions, such as driving over dusty roads or where short runs are made in cold weather, the first must be earlier and subsequent oil changes must be more frequent.
Air cleaner. When the car is driven over dusty roads, attention must be more frequent.
Propeller shafts. Under tropical or severe conditions, particularly where sand is encountered, the sliding joint must be lubricated very frequently to prevent ingress of abrasive materials.
Use only Rover recommended lubricants. After exhaustive tests the recommended lubricants have been found pre-eminently suitable for Rover cars and should be used whenever possible in the grades specified. When ordering oil, the correct grade, as well as the make, should be clearly stated.

Recommended lubricants
The Rover Company attaches very great importance to the nature of the lubricants used in its products and therefore maintains tests of those which it recommends.
Because of the extensive nature of these tests they cannot be carried out upon more than a strictly limited number of different makes. Consequently The Rover Company currently confines its recommendations to those set out on opposite page.

Should for any reason such lubricants not be available in certain overseas territories, the Rover distributor or dealer for that territory will obtain specific guidance from The Rover Company, or owners may communicate with the company where they so wish.
The attention of owners is drawn to the fact that the use of lubricants other than those recommended could in certain circumstances affect the settlement of claims put forward under the terms of the Company's guarantee.
No lubricants of other makes, grades or types are currently recommended.
Multigrade oils produced by the makers of the lubricants listed below are also approved for the range of S.A,E. grades that they cover.

Oil additives
The oils selected for engine, gearbox and axle, etc., on the Rover Car are complete in themselves and afford every protection. A warning is necessary against the use of anti-friction additives or other products in these units, as in certain circumstances these might materially impair the character of the lubricant in use.

Recommended lubricants
These recommendations apply to temperate climates where operational temperatures may vary between 1O degrees F (-12 degrees C) and 90'degrees F (32 degrees C).
Information on recommended lubricants for use under extreme winter or tropical conditions can be obtained from The Rover co. Ltd., Technical Service Department, or your local Distributor or Dealer.

On the following pages, in the same general order as listed in the Maintenance Schedule Book, will be found all instructions on how to carry out the maintenance and adjustments periodically required.
Engine oil consumption
The Rover Company feels that there are many owners who may not be fully aware of certain changes which have come about in engine design and manufacturing technique, and the characteristics of modern engine lubricants.
The Rover Company, in common with other manufacturers, expects from a new engine a definite consumption of engine oil.
It is usually a characteristic that in the early life of an engine the consumption of oil will be higher than subsequently and it is quite normal for consumption figures to improve up to and even beyond 6,000 miles (9.600 km).
The reason for the heavier consumption when new is that as the piston rings bed-in so is the consumption reduced. This consumption of oil in the early stages of the engine's life is a desirable characteristic, aiding as it does the effective running-in of pistons, rings and cylinder bores, resulting in subsequent longevity.
It should also be realised that with the trend towards modern thinner lubricants, which is in itself a highly desirable feature, there may be some tendency for the consumption also to be slightly increased.
Owners when checking oil consumption should make quite sure that the check is made with the engine cold and the car standing on level ground, otherwise a false reading may result.
Over-filling an engine with lubricating oil has no advantages and can quite easily result in a loss of lubricant, giving a completely misleading impression.
It is also unnecessary to top-up oil in the sump for every half-pint (0,25 litre) that may be consumed, but topping-up should not be delayed after the oil level has or is likely to reach, in the course of current running, the low mark on the dipstick.

Engine oil level
Every 750 miles (1.000 km) check the oil level. Proceed as follows:
Stand the car on level ground and allow a few minutes for the oil to drain back into the suinp from the valve gear, etc. Withdraw the dipstick upwards, 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, as the engine may then require more frequent decarbonisation.

Oil additives
The oils selected are complete in themselves and afford every protection. A warning is necessary against the addition of any oils or other products, as in certain circumstances these might materially impair the character of the lubricant in use.

Engine oil changes
When the vehicle leaves the factory, engine oil of a grade suitable for a temperate climate is in use.
The first engine oil change should be made at 1,500 miles (2.400 km); thereafter the oil must
be changed every 3,000 miles (5.000 km).
To change the engine oil, proceed as follows:
Run the engine to warm up the oil, and switch off the ignition.
Remove the drain plug in the right hand side of the sump. Allow time for the oil to drain away completely and replace the plug.
Refill with oil of the correct grade through the filler at the left-hand front of the engine; the capacity is 15 Imperial pints (8,5 litres).

Engine oil filters
In addition to the gauze pump intake filter in the sump, the oil is cleaned by means of a full-flow pressure filter mounted externally on the engine.
The element of the full-flow filter must be renewed every 6,000 miles (10.000 km). This should be done at a routine oil change.
To remove the full-flow filter element, located on the right-hand side of the engine: Place oil tray under filter.
Unscrew the bolt in the top of the filter adaptor and remove the container complete with the filter element.
Remove and discard the used filter element and large rubber washer. Wash the container in petrol. Place the new filter element in the container and reassemble the unit, using the new large rubber washer supplied with the element, Ensure that all the sealing washers are in position and intact and that the container is correctly located in the top cover.
Refill with correct grade of engine oil and run engine for five minutes, then check for leaks. Check oil level and replenish if necessary.

Engine breather filter
The oil-wetted gauze filter fitted to the engine top rocker cover breather outlet should be cleaned every 6,000 miles (10.000 km) in the following manner:
Remove the filter and wash the gauze by swilling the unit in a dish of petrol; re-wet the gauze by dipping in clean engine oil and shake off the surplus. The filter should be replaced with the slot facing to the rear.

Engine oil filler and breather filter, 110 model illustrated
A-Oil filler cap
B-Engine breather filter

Air cleaner
Attention to the air cleaner is extremely important, especially under dusty conditions, as engine wear generally will be seriously affected if the car is run with an excessive amount of sludge in
the oil bath or paper element.
95 models
Under clean road conditions, the oil bath should be cleaned and refilled every 3,000 miles (5.000 km). In cases where the car is operated under dusty conditions, attention must be more frequent.
Proceed as follows:
1. Slacken the hose clips securing the air cleaner top cover to the silencer duct; unscrew the knurled nut securing the top cover and remove the air cleaner complete.
2. Lift off the top cover and remove the filter element from the oil bath.
3. Unscrew the container from the stud on the support bracket and clean out all dirty oil and sludge. Replace container and refill with fresh engine oil to the indicated level; the capacity is approximately 1 pint (0,5 litre).
4. Rinse the filter element in paraffin and shake off the surplus.
5. Ensure that the sealing washers are in position and intact and reassemble the unit.

110 models
Under clean road conditions the element should be changed every 18,000 miles (30,000 km). In cases where the car is operated under dusty conditions attention must be more frequent.
Proceed as follows:
1. Remove bolts securing the air cleaner and lift out the complete unit.
2. Uncip end cover and withdraw element with frame.
3. Release wing nut on frame and remove end cap and sealing washer.
4. Discard old element and replace with new unit.
5. Ensure that the sealing washers are in position and intact, and reassemble the unit. Refit to engine.

Sparking plugs
The sparking plugs are fitted with plastic covers, To gain access to the plugs for cleaning and gap-setting, pull up the plug covers without detaching them from the high tension leads.
Every 6,000 miles (10.000 km) check or replace the sparking plugs, if the plugs are still in good condition clean and re-set the electrode gaps to .029 to .032 in. (0,75 to 0,80 mm).

Tappet adjustment
Every 6,000 miles (10.000 km) check tappet clearance and adjust if necessary,
It is most important that tappet clearances be maintained at the correct setting. If anything less than the correct clearance is used, a fall in power output will follow, with possible damage to valves and seats, while greater clearance will mean noisy tappets.
The correct clearance is .006 in. (0,15 mm) for the inlet and .010 in. (0,25 mm) for the exhaust with the engine at running temperature.
The cylinder firing order is 1, 5, 3, 6, 2, 4.

To carry out tappet adjustment, proceed as follows:
1. Rotate the engine in the running direction until the valve receiving attention is fully open and then move the engine one complete turn, to bring the tappet on to the back of the cam.
2. Check the tappet clearance with a feeler gauge. If adjustment is required, slacken the locknut and rotate the tappet adjusting screw until the clearance is correct; retighten the locknut, taldng care to ensure that this operation does not upset the clearance.
3. Repeat for the other valves in turn.

Flywheel markings
Ignition and valve timing is based on markings on the engine flywheel, which are visible, adjacent to a pointer, under the inspection cover on the right-hand side of the flywheel housing.
The markings and their meanings are as follows
1. The line against which the letters T.D.C. are stamped when brought opposite the pointer, indicates that No. 1 (front) piston is at top dead centre, i.e. at the top of its stroke.
2. The line against which the figure is stamped, as detailed below, when set opposite the pointer, indicates the firing-point of No. 1 cylinder, i.e. the position at which the distributor points should be just opening, with the rotor in the firing position for No, 1 or No. 6 cylinder.
95 and 110 models-6 degree mark using premium fuel.
3 The line against which the letters E.P. are stamped, when set opposite the pointer, indicates the point at which No. 1 exhaust valve should be at the peak of its lift (fully open). It is 104 degrees before T.D.C. on the 95 and the 110 models,

Carburetter
The horizontal dust-proof carburetter is carefully adjusted on assembly, and, apart from the few items of routine maintenance indicated below, normally requires no further attention.
Carburetter slow-running adjustment
The only adjustments provided at the carburetter are a let adjustment screw and a slow-run valve.
Check carburetter slow running every 3,000 miles (5.000 km).
Should the carburetter require tuning for any reason proceed as follows:
1. Run the engine until normal operating temperature is obtained. If necessary adjust slow run valve to give the correct idling speed.
2. Lift the earburetter 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.

If the engine speeds up immediately the mixture is too rich and the jet adjustment screw must be turned anti-clockwise, thus weakening the mixture; if the engine stops immediately, the mixture is too weak and the jet adjustment screw should be turned clockwise to enrich the mixture.
If the engine just falters and continues to run unevenly the adjustment is correct.
Finally adjust the Slow-run valve to get a smooth idling speed. The fast idle screw should not require adjustment.

Carburetter maintenance
Every 12,000 miles (18.000 km) unscrew the brass cap on top of the suction chamber, withdraw cap and hydraulic damper, replenish the damper reservoir as necessary with SAE 20 oil and replace.