Servicing The Mower Blades - Allis-Chalmers AC-130 Series Operator's Manual

WARNING
For your personal safety, do not handle the sharp
mower blades with bare hands. Careless or
improper handling of blades may result in serious
injury.
WARNING
For your personal safety, blade mounting
capscrews must each be installed with two spring
washers or a hex washer and spring washer, then
securely tightened. Tighten blade mounting nut to
70-80 ft-lbs (95-108 Nm). Tighten blade mounting
capscrew to 45-55 ft-lbs (61-75 Nm).

Servicing the Mower Blades

Service Interval: Every 100 Hours or As Required
1. Remove mower deck (see "Mower Deck Removal").
2. To remove blade for sharpening, use a block of wood
to prevent blade rotation while loosening the cap-
screw (see Figure 19).
3. Remove the nut (C, Figure 20), or spring washers
(B), and blade. Or remove the capscrew (D, Figure
21), hex washer (B), spring washer (C), and blade.
4. Use a file to sharpen blade to a fine edge. If blade is
damaged, it must be replaced.
5. Balance the blade as shown in Figure 18. Center the
blade's hole on a nail lubricated with a drop of oil. A
balanced blade will remain level.
6. Reinstall the blade (Figure 21) with the tabs pointing
up toward the mower deck as shown.
7. Reinstall the spring washers (B, Figure 20) and nut
(C). Use a wooden block (A) to prevent blade rotation
while tightening the nut (C) to 70-80 ft-lbs (95-108
Nm). Or, reinstall the hex washer (B, Figure 21),
spring washer (C) and capscew (D). Use a wooden
block (A) to prevent blade rotation while tightening
the nut (D) to 45-55 ft-lbs (61-75 Nm).
Workbench
Figure 18. Balancing the Blade
Figure 19. Blade Removal
A
Figure 20. Blade Installation Mowers (42" Mowers)
A. 4x4 Wood Block
B. Spring Washers
C. Blade Nut
A
Figure 21. Blade Installation Mowers (46" Mowers)
A. 4x4 Wood Block
Nail
B. Hex Washer
C. Spring Washer
D. Blade Capscrew
23
Regular Maintenance
LOOSEN
C
B
C
B
D