Komatsu AX20 Operation & Maintenance Manual page 132

31. MAINTENANCE
31.1.2 ENGINE
n CHANGE OIL IN ENGINE OIL PAN AND REPLACE ENGINE OIL FILTER CARTRIDGE
When carrying out engine maintenance, stop the engine and wait for it to fully cool down
Gas & LP Engines
CHANGE ENGINE OIL (See illustration)
1. Remove the drain plug, drain the oil, then reinstall and tighten
the drain plug.
2. Add the specified amount of genuine Komatsu Forklift engine
oil.
3. Check the oil level with the dipstick.
Oil refill amount: 1.0 US gal (3.8 L) (0.84 UK gal)
REPLACE ENGINE OIL FILTER (See illustration)
1. Using a filter wrench, remove the oil filter cartridge.
2. Clean the filter holder on the engine.
3. Coat the threads on the holder and the seal on the new filter
with clean engine oil.
4. Install the new filter.
NOTICE
After installing the new oil filter cartridge, start the engine and check for oil leakage around the oil filter
seal and at the oil pan drain plug.
Diesel Engine
CHANGE ENGINE OIL (See illustration)
1. Remove the drain plug, drain the oil, then reinstall and tighten
the drain plug.
2. Remove the dipstick.
3. Add the specified amount of engine oil. Use care to prevent oil
overflow.
4. Check the oil level with the dipstick.
Oil refill amount: 1.98 US gal (7.5 L) (1.65 UK gal)
REPLACE ENGINE OIL FILTER (See illustration)
1. Using a filter wrench, remove the oil filter cartridge.
2. Clean the oil filter holder.
3. Coat the threads of the holder and the new filter seal with clean
engine oil.
4. Install the new oil filter cartridge.
NOTICE
After installing the new oil filter, start the engine and check for oil
leakage at the filter seal and the oil pan drain plug.
n CHECK, ADJUST ENGINE VALVE CLEARANCE
n TIGHTEN (RETORQUE) ENGINE CYLINDER HEAD BOLTS
4-16