Shanghai Sinpar Scientific Instrument Co.,Ltd.
Combo RON MON Octane Engine V-Belts Inspections

Combo RON MON Octane Engine V-Belts Inspections

SINPAR combo RON MON octane engine FTC-M2 providing both research and motor test methods, uses one set of flywheel and V-belts. Two “B” size V-belts connect the combo octane engine flywheel to the motor pulley. The belts shall be tightened, so that with the engine stopped, a 2.25 kg (5 lb) weight suspended from one belt halfway between the flywheel and motor pulley shall depress the belt approximately 12.5 mm (0.5 in.).

The V-belts are to be inspected at the time of every octane engine top overhaul. A check of the belt tension during these inspections is advised. Any evidence of belt deterioration, such as fraying of the surfaces, requires belt replacement as a set.

Combo RON MON Octane Engine V-belts Replacement:

  • Remove the flywheel guard.
  • Remove rear guard of the control instrument panel.
  • Screw the power absorption motor rail-base adjusting screw to loosen.
  • Remove both V-belts from the flywheel and then slip them off the motor pulley.
  • Install new, matched pair, V-belts by first slipping them over the motor pulley and then mounting them over the flywheel and into the respective grooves.
  • Position the Multi-Speed induction motor using the rail- base adjusting screw so that the proper V-belt tension is approximated.
  • Measure and adjust the V-belt tension as specified in the next section “V-Belts Tension Adjustments”.
  • Install the flywheel guard and the rear guard of the control instrument panel.

Combo RON MON Engine V-Belts Tension Adjustment

V-belts connecting the combo octane engine flywheel to the motor shall be set to the proper tension.

  • Suspend a 2.25 kg (5 lb.) weight from one belt, half-way between the flywheel and the motor pulley.
  • Measure the depression of the belt and, if necessary, adjust the position of the power absorption motor on its rail-base by using the adjusting screw. Proper belt depression is approximately 12.5 mm.
Combo RON MON Octane Engine V-Belts Tension
Combo RON MON Octane Engine V-Belts Tension Measurement

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