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MAINTENANCE
SE4 05/05 Maintenance Section 5-5
© 2005 Alamo Group Inc.
MAINTENANCE
SHEAR PIN YOKE LUBRICATION
Yoke is supplied with a grease fitting to lube betweeen gearbox
shaft and yoke. This allows yoke to spin freely on gearbox shaft
when pin shears. Failure to lube may cause yoke to gall and spin
weld to shaft. Small amount of grease added every 5 (approx.)
shear pins will greatly prolong life of yoke.
When attaching PTO yoke to tractor PTO shaft, it is important that spring-activated locking collar
slides freely and locking balls are seated in groove on PTO shaft. A loose shaft could slip off and
result in personal injury or damage to cutter.
BLADE SERVICING
Inspect blades before each use to determine that they are properly installed and in good condition. Replace
any blade that is bent, excessively nicked, worn, or has any other damage. Small nicks can be ground out
when sharpening.
Use only original equipment blades on this cutter. They are made of special heat-treated alloy
steel. Substitute blades may not meet specifications and may fail in a hazardous manner that
could cause injury.
Replace bent or broken blade with new blades. NEVER ATTEMPT TO STRAIGHTEN OR WELD
ON BLADES SINCE THIS WILL LIKELY CRACK OR OTHERWISE DAMAGE THE BLADE WITH
SUBSEQUENT FAILURE AND POSSIBLE SERIOUS INJURY FROM THROWN BLADES.
(SGM-10)
BLADE SHARPENING
IMPORTANT! When sharpening blades, grind each blade the same amount to maintain balance. Follow
original sharpening pattern as shown in Figure Mnt-R-0008. Always sharpen blades by grinding. Always
sharpen both blades at same time to maintain balance. The difference in blade weights should not exceed 1
ounce. Unbalanced blades will cause excessive vibration which can damage gear box bearings. Vibration
may also cause structural cracks in cutter housing. DO NOT heat and pound out edge. Do not sharpen blade
to a razor edge, but leave a 1/16" blunt edge. Do not sharpen back side of blade.
Avoid personal injury. Always block the cutter up to prevent if from falling when the blades and/ or
carrier are being serviced.