Echo CH8670H Owners Manual v.5 - Manual (Page 23)

19 8 INCH TURNTABLE CHIPPER
ENGLIS
h
SERVICE & MAINTENANCE
BEFORE INSPECTINg OR SERVICINg ANy PART OF THIS MACHINE, SHuT OFF POWER SOuRCE,
DISENgAgE THE HyDRAulICS, OPEN SHIElD AND MAkE SuRE All MOVINg PARTS HAVE COME TO A COMPlETE STOP.
WaRNING
Figure 5.5 - Drive Belt
Alternately turn each of the belt tension bolts clockwise 13.
an equal number of turns until the belt deflection at the
center of the belt is 7/16” when a 20 lb load is placed
against the belt (Figure 5.6).
Check pulley alignment using a straight edge and
14.
adjust the appropriate belt tension screw if required.
Tighten the four engine mount bolts to the appropriate
15.
torque.
tighten the bolts securing the belt kickers to the engine.
16.
There should be .028” gap between the drive belt and
the kickers when the belt is engaged.
tighten the engine tie bolt 17.
using a wrench, pull the small idler pulley towards the 18.
center of the chipper
Install the hydraulic drive belt on the hydraulic pump
19.
(on outside of idler pulley) and on engine drive pulley
(Figure 5.5).
Release idler to apply tension on hydraulic pump drive
20.
belt.
lift the engagement handle, start engine and lower
21.
engagement handle to test units. Adjust pulleys and
belt tension as needed.
The tension bolts are pointed out in the drawing.
5.10.2 REpLacING hYdRauLIc dRIvE bELT
Check the condition of the drive belt annually or after ev-
ery 25 hours of operation, whichever comes first. If the
belt is cracked, frayed, worn or stretched, replace it. Fol-
low procedure below to replace the drive belt.
using a wrench, pull the small idler pulley away from 1.
the hydraulic belt to release the tension
Remove the hydraulic drive belt from the drive pulley 2.
on the engine and the hydraulic pump
using a wrench, pull the small idler pulley towards the 3.
center of the chipper
Install the hydraulic drive belt on the hydraulic pump, 4.
on outside of idler pulley and on engine drive pulley.
(figure 5.5)
Release idler to apply tension on hydraulic pump drive 5.
belt.
Figure 5.6 - Drive Belt Tension