MAINTENANCE PRIOR TO START HEATER / AIR CONDITIONING: CHECKING RATE OF AIR FLOW If the filter fleece is too dirty it must be replaced. 1. Turn start switch to position "1". 2. Switch blower on. 3. Check if air flow at the air-outlet nozzles (1) and (2) to the right and left of the steering column is strong enough. Attention: The circulating air jets (arrow) must be open. 4. If insufficient air is coming out of the jets, either the filter fleece in the heating/air conditioning unit is dirty and will have to be cleaned or replaced or the condenser in the air conditioning system is dirty and will have to be cleaned; see "Maintenance Every 500 Operating Hours".
1 2 75_293 OTHER MAINTENANCE MEASURES PRIOR TO START Check that the brake oil level reaches up to the marking. Check that the contacts at the float of the brake oil container are tightened correctly. Check that the lighting equipment operates correctly; check it for dirt and damage. Check the measuring instruments. Check both the horn and the reversing warning horn. Check both clearance and operation of the steering wheel. 75_238 Check the function of the rear-view mirror; check it for dirt and damage. 7-29