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INSTALLATION, OPERATING, MAINTENANCE—JCV 360
JCV MOTOR s.r.o. , Vikýřovice 562, 788 13, Šumperk, Czech Republic—Europe, www.vernermotor.com, [email protected]
4.
Items requiring periodic renewal
Some components require periodic renewal throughout the operational life of the engine
and these items must be replaced at the intervals specified. Because of a number of
operational variables, (atmospheric and weather conditions, frequency of operations,
individual preferences, etc.) close and frequent inspection is mandatory to assure that they
remain serviceable throughout the recommended replacement interval. Should anything
abnormal be noted before the item is due for replacement, it must be replaced without
delay. (The remote but realistic possibility of an impending premature failure of the drive
belt is an example of this, as discussed below.)
Note:
It is pointed out here that the recommended replacement/renewal periods represent only
the reasonably, EXPECTED and not the unconditionally WARRANTED service life of the
component in question. In all cases where a component has to be repeatedly replaced
sooner than in a specified time, the manufacturer must be notified to investigate the reason
and offer a solution for the recurring problem.
Reduction drive belt
The Heavy Duty reduction drive cog-belt requires no maintenance except regular tension
check-out and it is not subject to appreciable stretching during the recommended
replacement intervals.
The producer is using the belt of kind: type POLY-V 240J/610PJ – width 42mm (USA 240J/18)
Reduction drive belt is tensioned by reduction unit gear shaft. This shaft can be turned after
loosing 36S-06-03 and 36S-06-06 screws.
rotating against engine revolutions – reduction drive belt loose + changing
rotating by engine revolutions – reduction drive belt tightening
REDUCTION DRIVE BELT HAS TO BE TIGHTENED IN THE DIRECTION OF ENGINE ROTATION!
Tightening strength is about 20 Nm.
Tighten first 36S-06-03 screw for 20 Nm and than screw 36S-06-06 for 12 Nm after reduction
drive belt exchange.
Check reduction drive belt tension and visual condition before every flight. Exchange
reduction drive belt immediately (also independently of exchanging intervals) in case of any
defect.
Squeaking sound after quick acceleration or higher revolutions, than maximal RPM adjusted
on specific propeller – is caused by loosened reduction drive belt, which must be tightened
immediately.