Testing Compression Pressure - Komatsu ecot3 PC300LC-8 Shop Manual

SEN02625-06

Testing compression pressure

a Testing tools for compression pressure
Symbol Part number
1 795-799-6700 Puller
2 795-502-1590 Compression gauge
D
3 795-790-6110 Adapter
4 6754-11-3130 Gasket
k
Care must be exercised in measuring the
compression pressure in order to avoid burn
injury from touching the exhaust manifold or
muffler, or pinching by rotating part.
a Measuring the compression pressure under the
following condition.
(Engine oil temperature: 40 - 60
1. Open the engine hood.
2. Remove air intake connector (1).
3. Disconnect harness (2) and remove bracket (3)
and air heater (4).
4. Disconnect wiring harness connectors (5), (6)
and (7).
14
Part name
)
°C
5. Move fuel filter and corrosion resistor assembly
(8) to the control valve side along with the hose
being connected to it.
6. Remove bracket (9).
7. Disconnect air intake connector (10) and wiring
harness connectors (11) and (12).
8. Remove blow-by hose (13) and breather hose
(14) to remove cylinder head cover (15).
30 Testing and adjusting
PC300, 350-8