Overhaul Criteria - Hino Motors J08E-VC Workshop Manual

ENGINE INTRODUCTION (J08E)

OVERHAUL CRITERIA

FACTORS TO DETERMINE THE ENGINE OVERHAUL
1.
(1)
(2)
SHTS011060100026
NOTICE
Do not operate the starter for more than 15 seconds.
NOTICE
Do not allow gas leakage from the seal face.
(3)
2.
(1)
SHTS011060100027
LOW COMPRESSION PRESSURE.
Before measurement
a. Charge the battery completely.
b. Set the valve clearance to the correct value.
c. Idle the engine (Coolant temperature at 80C {176F}).
d. Remove the air cleaner.
e. Remove all injectors.
Measurement
a. Insert the gauge adaptor into the nozzles.
SST:
Compression gauge adaptor (A) (S0955-21110)
Compression gauge adaptor (B) (S0955-21030)
Compression gauge adaptor (B) (S0955-21060)
b. Run the engine with the starter and measure the compression
pressure.
Standard
3.2-3.4 MPa
2
{33-35 kgf/cm ,
2
467-496 lbf/in }
Engine revolution 150r/min
c. Measure the compression pressure of each cylinder.
Reassemble the removed parts.
ENGINE OIL PRESSURE.
Check the oil pressure warning lamp when the oil and coolant temper-
ature is hot [about 80C {176F}].
a. If the warning lamp lightens, check the oil level.
b. Check oil deterioration.
If oil quality is poor, replace with a suitable grade oil.
c. Remove the oil pressure switch and install the oil pressure gauge.
Difference
Limit between each
cylinder
2.3 MPa 0.3 MPa
2
{24 kgf/cm , {3 kgf/cm
2
341 lbf/in } 43 lbf/in
EN01–19
EN0110601H300002
2
,
2
} or less