Changing Hydraulic Transmission Filter; Checking And Adjusting Engine Valve Clearance - Komatsu WB140-2N Operation & Maintenance Manual

MAINTENANCE

CHANGING HYDRAULIC TRANSMISSION FILTER

• After operating machine, the transmission unit becomes
very hot and may cause burns. Let the machine cool
down before changing the filter.
• Oil that may be spilled during replacement of the filter
may cause the floor to become slippery: use anti-social
shoes and immediately remove any trace of oil from the
floor and transmission unit.
• Oils, filters, coolant, and the battery are considered spe-
cial waste and must be collected and disposed of
according to all anti-pollution regulations in force.
Change the filter every time transmission oil is changed.
Proceed as follows:
1. Raise the front mat and remove cover (1), using a 13 mm wrench.
2. Unscrew and remove filter (2) with the special wrench provided.
3. Clean contact surface between the gasket and filter support (3).
4. Lubricate the gasket, fit it in its seat and screw filter on thoroughly
until it touches the gasket.
5. Give it another half turn by hand.
6. Start engine, let it idle and let the oil warm up until it reaches oper-
ating temperature.
7. Add oil until it reaches the MAX. mark on dipstick (4). (See
"CHECKING HYDRAULIC TRANSMISSION OIL LEVEL" on
page 3-39). Always top off with suitable oil. (See "FUEL, COOL-
ANT, AND LUBRICANTS" on page 3-7).
8. Reinstall cover (1).

CHECKING AND ADJUSTING ENGINE VALVE CLEARANCE

Since the check and adjustment of the engine valve clearance requires use of special tools, have these operations per-
formed by your Komatsu Dealer.
3-50 WB140-2N, WB150-2N