Tennant 365, Руководство оператора

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MAINTENANCE
3-29
365 MM173 (3---90)
ENGINE IGNITION TIMING (For machines serial
number 007000 and above)
The ignition system does not require any mechanical
external adjustments, however the spark plug high
tension leads must be inserted correctly, if ever
removed, at each numbered coil position to the
corresponding spark plug number in the cylinder
(front to rear #1, 2, 3, and 4).
The ESC module controls the timing position in the
start mode at 10
_
BTDC until the rpm reaches
250 rpm, thereafter the sensors are processed and
timing is set to be compatible with engine speed,
crankshaft position, engine load, engine coolant
temperature and overspeed by the module.
CYLINDER HEAD
CYLINDER HEAD
A three-stage torque procedure should be used
when reassembling the cylinder head. The cylinder
head bolts must be tightened after the first
50 hours of operation, for machines below serial
number 007000, and seasonally thereafter for all
machines.
Snug down cylinder head bolts in the proper
sequence; first to 20 to 30 ft lb (27 to 41 Nm), then to
50 to 55 ft lb (68 to 75 Nm), and then to 65 to 70 ft lb
(88 to 95 Nm).
Tighten the intake manifold bolts to 15 to 18 ft lb (20
to 24 Nm) after every 800 hours of operation.
00697
CYLINDER HEAD BOLT TIGHTENING SEQUENCE
The cylinder head bolts must be retorqued after the
engine is put into operation and brought up to
proper operating temperatures. To retorque head
bolts, follow the correct sequence. Loosen one head
bolt at a time one-quarter turn, 90 degrees; then
retorque it to the correct value.
NOTE: Power wrench torque limit must be held at
least 10 ft lb (14 Nm) below hand torque
specification; then hand torque to the specifications.