Hitachi EX 3600-6 Operator's Manual page 239

Check Compressor Belt Tension
--- every 250 hours
Remove box-type cover (2), located on bed (1) under the
step, to gain access to the compressor belt.
Visually check belt for wear. Replace if necessary. Start
the engine and run for 10 minutes. Check belt tension by
depressing the midpoint between the hydraulic motor
and compressor pulleys with the thumb. Deflection must
be 13 to 14 mm (0.5 to 0.6 in) at a depressing force of
approximately 98 N (10 kgf, 22 lbf).
If tension is not within specifications, loosen the com-
pressor mounting bolts to adjust belt tension.
MAINTENANCE
1
7-100
M18M-07-053
2
1
M146-07-071
M146-07-001