PERIODIC MAINTENANCE
63
EPA/ARB Installation Requirements
USA Only
The following are the installation requirements for
the EPA/ARB. Unless these requirements are met,
the exhaust gas emissions will not be within the
limits specified by the EPA and ARB.
Therefore, periodically perform the maintenance
and cleaning of air cleaner and muffler.
Maximum Exhaust Gas Restriction shall be:
Maximum air intake restriction shall be 0.90 PSI
(6.23 kPa; 635 mmAq) or less. Clean or replace the
air cleaner element if the air intake restriction
exceeds the above mentioned value.
Note: EGR-equipped engines have a range of
allowable intake and exhaust restrictions; a
minimum and a maximum value.
Tightening Fasteners
Use the correct amount of torque when you tighten
fasteners on the machine. Applying excessive
torque may damage the fastener or component and
not enough torque may cause a leak or component
failure.
NOTICE
The tightening torque in the Standard Torque Chart
in the Periodic Maintenance Section of this manual
should be applied only to the bolts with a “7” head.
(JIS strength classification: 7T)
• Apply 60 % torque to bolts that are
not listed.
• Apply 80 % torque when tightened to
aluminum alloy.
STANDARD TORQUE CHART
Note: Torque values shown in this manual are for clean, non-lubricated fasteners unless otherwise
specified.
• 3CH1, 3CJ1: 1.71 PSI (11.8 kPa;
1200 mm Aq) or less
• 3CE1: 2.22 PSI (15.3 kPa, 1560
mm
Aq) or less
Thread Size × Pitch mm
M6 × 1.0
M8 × 1.25
M10 × 1.5
M12 × 1.75
M14 × 1.5
M16 × 1.5
Tightening torque
in.-lb
96.0 ± 9.0
–
–
–
–
–
ft-lb
–
19.0 ± 2.0
36.0 ± 4.0
65.0 ± 7.0
101.0 ± 7.0
167.0 ± 7.0
N·m
10.8 ± 1.0
25.5 ± 2.9
49.0 ± 4.9
88.3 ± 9.8
137.0 ± 9.8
226.0 ± 9.8
kgf/m
1.1 ± 0.1
2.6 ± 0.3
5.0 ± 0.5
9.0 ± 1.0
14.0 ± 1.5
23.0 ± 2.0
TNV_OperationManual_T4(under 19kW).book Page 63 Wednesday, June 17, 2015 11:23 AM
