Checking an air-cooled engine system

Basic Car Repair

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1.	Checking fanbelt tension
2.	Adjusting fanbelt tension
3.	Fitting a new fanbelt
4.	Draining the cooling system
5.	Flushing and cleaning the cooling
6.	Checking the thermostat
7.	Changing a hose
8.	Refilling/adding anti-freeze
9.	Checking a radiator pressure cap
10.	Replacing a water pump
11.	Checking an air-cooled engine system
12.	Shim-adjusted overhead camshaft
13.	Pushrod and rocker
14.	Overhead camshaft and fingers
15.	Checking externally-adjusted
16.	Renewing engine mountings
17.	Fitting new steady-bar rubber
18.	Changing an exhaust manifold
19.	Changing the oil
20.	Changing a cartridge filter
21.	Cleaning a bowl-type filter
22.	Cleaning a centrifugal filter

A fault in an air-cooled system is not as easy to trace as on a water-cooled layout because the engine is surrounded by ducting.

It is advisable that the follow spanners to fit drive belt ing areas be checked every adjuster; oil can 6,000 miles.

Step 1. If the fan is belt-driven, check the belt for cracking or fraying and renew it at the first sign of such deterioration. (See Project 3).

2. Ensure that the air intake at the fan housing is clear of obstructions. A mis-shapen air hose may have collapsed inter- nally—if you are suspicious, unclip it and check inside.

3. Support the car on ramps and check underneath for any looseness of fixings holding the ducting, or any damage to the ducting.

4. Lubricate and check the action of any flap valve linkages.