GENERAL INFORMATION 7
MAIN DATA AND SPECIFICATIONS
1. MODELS 4LB1 AND 4LB1T
Item
Engine model(s)
4LB1 4LB1T
Type In-line water cooled 4-cycle type, OHV: diesel engine
Timing drive system Gear drive
Number of piston rings Compression rings 2, and oil ring 1
No. of cylinders - bore
×
stroke mm 4 – 77.4
×
79.7
Displacement cc (cid) 1499 (92)
Compression ratio 22 : 1
Type of combustion chamber Swirl chamber
Overall length
×
width
×
height mm * 554
×
436
×
579 554
×
466
×
611
Dry weight kg (lb) * 130 (287) 137 (302)
Fuel injection timing (BTDC) (when at stop) * 16°
Firing order 1 – 3 – 4 – 2
Fuel Highspeed diesel fuel (SAE No.2)
Idling speed r.p.m * 850
Compression pressure kg/cm
2
(psi/MPa) 31 (441/3) or more/250 r.p.m.
Valve clearance (cold)
Intake 0.4 (0.0157)
mm (in)
Exhaust 0.4 (0.0157)
Intake valve
Open (BTDC) 15°
Valve
Close (ABDC) 29°
operating
Exhaust valve
Open (BBDC) 40°
timing
Close (ATDC) 16°
Injection pump Bosch type
Governor Mechanical type
Nozzle Throttle type
Injection pressure kg/cm
2
(psi/MPa) * 135 (1920/13.2)
Oil pump Trochoid type
Oil filter Cartridge type
Lubricant capacity: In total lit (qts) * About 7.3 (7.7)
Generator output (V – A) * 12 – 20
Starter output (V – KW) * 12 – 1.0
(Note) These specifications may be subject to change without notice.
Figures in the column with an asterisk (*) are different for each machine. Refer to the specifica-
tions provided by machine manufacturers.
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