24. SERVICE PROCEDURE 24.2.11 REPLACE AIR CONDITIONER BELT 1. Loosen 4 bolts 1 and jack bolt 2 , then move compressor 3 to the side. 2. Replace the V-belt. REMARK When adjusting the V-belt, do not push the compressor directly with a bar. Use jack bolt 2 . 3. Tighten jack bolt 2 and bolts 1 , and apply tension to the V-belt. The standard deflection for the V-belt is approx. 15 – 18 mm (0.6 – 0.7 in) when the belt is pushed by thumb (approx. 6 kg (13.2 lb)) at a point midway between the air compressor pulley and fan pulley.
24.2.12 CHECK UNDERCARRIAGE OIL Stop the machine on level ground, and check for any reduction in the oil at the idler (portion P), track roller (portion Q), bogie shaft (portion S), and carrier roller (portion R). 1. Loosen seal bolt 1 slowly and check if oil oozes out from the thread. If oil oozes out, the oil level has not gone down, so tighten the bolt. 2. If no oil comes out even when seal bolt 1 is removed, the oil level is low, so please contact your Komatsu distributor for repair. REMARK There is one bogie shaft seal bolt 1 each on the inside and outside. 3-36