IAI America RCS2W - Manual (Page 83)

4. Maintenance Inspection
75
4.5.3 Adjusting the Belt Tension (RA4R Type)
Remove the pulley case cover and loosen the four motor-unit affixing bolts.
Pass a looped string (or long tie-band) around the motor unit, and pull the string to the specified tension using a
tension gauge. In this condition, uniformly tighten the motor-unit affixing bolts.
[Recommended tightening torque of adjustment bolts]
162 N•cm (16.5 kgf•cm)
Tension: 2.5 kgf
Motor-unit affixing bolts
(Use an Allen wrench of 2.5 mm across flats.)
Motor-unit affixing bolts
(Use an Allen wrench of 2.5 mm across flats.)