wsm RTV-X1120D Workshop Manual page 129

RTV-X900, RTV-X1120D, WSM
Compression Pressure
CAUTION
• Work by two people when you measure pressure.
1. Run the engine until it is warmed up.
2. Stop the engine.
3. Remove the muffler covers (1).
4. Remove the air cleaner hose (3), the muffler (2) and all glow
plugs.
5. Disconnect the accelerator wire.
6. Engage the parking brake.
7. Set a compression tester (Code No. 07909-30208) with the
adaptor (Adaptor L, code No. 07909-31301) to the glow plug
hole.
8. After making sure that the stop lever is set at the stop position
(non-injection), run the engine with the starter and measure the
compression pressure.
9. Repeat steps 6 and 7 for each cylinder.
10. If the measurement is below the allowable limit, apply a small
amount of oil to the cylinder wall through the glow plug hole and
measure the compression pressure again.
11. If the compression pressure is still less than the allowable limit,
check the top clearance, valve clearance and cylinder head.
12. 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 %.
[RTV-X900 (D902)]
Factory specification
Compression pressure
Allowable limit
[RTV-X1120D (D1105)]
Factory specification
Compression pressure
Allowable limit
(Condition)
• Coolant temperature:
80 to 90 °C (176 to 194 °F)
(1) Muffler Cover
(3) Muffler
1-S20
ENGINE
3.53 to 4.02 MPa
2
36.0 to 41.0 kgf/cm
512 to 583 psi
2.55 MPa
2
26.0 kgf/cm
370 psi
3.73 to 4.11 MPa
2
38.0 to 42.0 kgf/cm
541 to 597 psi
2.26 MPa
2
23.0 kgf/cm
327 psi
(3) Air Cleaner Hose
9Y1210946ENS0007US0
KiSC issued 01, 2014 A