Kubota GL9000D-AU-B User Manual

ENGINE
GL6000A-AU-B, GL6000D-AU-B,GL9000A-AU-B, GL9000D-AU-B, WSM
1-S12
4. CHECKING, DISASSEMBLING AND SERVICING
[1] CHECKING AND ADJUSTING
(1) Engine Body
Compression Pressure
1. After warming up the engine, stop it and remove the air cleaner,
the muffler and all nozzle holders.
2. Install a compression tester for diesel engines to nozzle holder
hole.
3. After making sure that the speed control lever is set at the stop
position (Non-injection), run the engine at 200 to 300 min
-1
(rpm)
with the starter.
4. Read the maximum pressure. Measure the pressure more than
twice.
5. If the measurement is below the allowable limit, check the
cylinder, piston ring, top clearance, valve and cylinder head.
6. If the measurement is below the allowable limit, apply a small
amount of oil to the cylinder wall through the nozzle hole and
measure the compression pressure again.
7. If the compression pressure is still less than the allowable limit,
check the top clearance, valve clearance and cylinder head.
8. If the compression pressure increases after applying oil, check
the cylinder wall and piston rings.
NOTE
• Check the compression pressure with the specified valve
clearance.
• Always use a fully charged battery for performing this test.
• Variances in cylinder compression values should be under
10 %.
9Y1211607ENS0008US0
Compression pressure
Factory specification
2.85 to 3.23 MPa
29.0 to 33.0 kgf/cm
2
413 to 469 psi
Allowable limit
2.26 MPa
23.0 kgf/cm
2
327 psi
KiSC issued 06, 2016 A

Kubota GL9000D-AU-B Specifications

General

Brand	Kubota
Model	GL9000D-AU-B
Category	Portable Generator
Language	English