Echo CH8993H Owners Manual v.6 - Manual (Page 24)

20 8 INCH TURNTABLE CHIPPER
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
13. Alternately turn each of the belt tension bolts clockwise
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).
14. Check pulley alignment using a straight edge and adjust
the appropriate belt tension screw if required.
15. Tighten the four engine mount bolts to the appropriate
torque.
16. tighten the bolts securing the belt kickers to the engine.
there should be .028” gap between the drive belt and
the kickers when the belt is engaged.
17. tighten the engine tie bolt
18. using a wrench, pull the small idler pulley towards the
center of the chipper
19. Install the hydraulic drive belt on the hydraulic pump
(on outside of idler pulley) and on engine drive pulley
(Figure 5.5).
20. Release idler to apply tension on hydraulic pump drive
belt.
21. lift the engagement handle, start engine and lower
engagement handle to test units. Adjust pulleys and
belt tension as needed.
Figure 5.5, 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.
1. using a wrench, pull the small idler pulley away from
the hydraulic belt to release the tension
2. Remove the hydraulic drive belt from the drive pulley
on the engine and the hydraulic pump
3. using a wrench, pull the small idler pulley towards the
center of the chipper
4. Install the hydraulic drive belt on the hydraulic pump,
on outside of idler pulley and on engine drive pulley.
(figure 5.5)
5. Release idler to apply tension on hydraulic pump drive
belt.
SPAN LENGTH
FORCE
20 LBS
7/16" DEFLECTION