Komatsu AX20 - Service Data; AX Models Service Data

28. SERVICE DATA
4-6
28. SERVICE DATA
28.1 AX SERVICE DATA – ALL MODELS
* Pneumatic tire lift trucks only
Component Inspection item Unit
FG15H(C)/18H-17
FG15S/18S-17
Engine
Engine
Engine model – NISSAN K21 (4-cyl)
Idling speed rpm 750
Maximum speed rpm 2,950
Compression psi/rpm
Gasoline/Dual-fuel: 178/350
LPG: 185/1,250
Lubricating oil
cooling system
Fan belt deflection in.(mm)
0.43 - 0.51 (11 - 13)
finger pressure: 98 N (10 kgf)
Fuel system
Injection timing
BTDC
deg.
ECU control
Injection order – 1-3-4-2
Injection rail pressure psi 50
LPG maximum tank pressure psi 250
LPG dry gas pressure psi 4.6
Intake/exhaust
system
Valve clearance
Intake
in.(mm) 0.015 (0.38) Warm
Exhaust
Electric system
Electronic ignition air gap in. (mm) 0.0138 - 0.0177 (0.35 - 0.45)
Spark plug gap in.(mm) 0.031 - 0.035 (0.8 - 0.9)
Spark plug type – NGK: FR2A-D
Ignition timing (gasoline)
Ignition timing (LPG)
BTDC
deg.
ECU control
Firing order – 1 - 3 - 4 - 2
Travel system
Tires Tire inflation pressure
Front wheels
psi (MPa)
100 (0.69) (7.0 kgf/cm
2
)*
Rear wheels
Lug (hub) nuts Tightening torque
Front wheels
ft/ibs (Nm)
114 - 180 (154 - 245)
(16 - 25 kgfm)
Rear wheels
61 - 108 ft/lb
83 - 147 Nm (8.5 - 15 kgfm)*
Rim mating nuts Tightening torque
Front wheels
65 - 91 (88 - 123)
(9.0 - 12.5 kgfm)*
Rear wheels 44 - 55 (59 - 74) (6.0 - 7.5 kgfm)*
Steering, braking system
Steering wheel Play
in. (mm)
1.2 - 2.4 (30 - 60)
Clutch pedal Play 0.12 - 0.20 in. (3 - 5 mm)
Inching pedal
Play 0.08 - 0.12 (2 - 3)
Interconnected travel 1.85 - 2.09 (47 - 53)
Brake pedal
Play
in. (mm)
0.51 - 0.67 (13 - 17)
Pedal height when pedal is depressed 3.54 - 3.94 (90 -100)
Brake
Parking brake operating force
ft/lb (Nm)
55 (245) (25 kgf)
Tightening torque for back plate
mounting bolts
108 - 146 (147 - 198)
(15 - 20 kgfm)
Loading equipment
Forks Fork thickness (at base of forks)
in. (mm)
1.5 ton truck: Min. 1.26 (32)
1.8 ton truck: Min. 1.34 (34)
Chain Length over 17 links Max. 10.8 (275.5)
Hydraulic system Relief pressure psi (MPa)
2,611 (18) (185 kgf/cm
2
)